taipy/tests/core/scenario/test_scenario.py

# Copyright 2021-2024 Avaiga Private Limited
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
# an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.
import typing
from datetime import datetime, timedelta
from typing import Set
from unittest import mock

import pytest

from taipy.config import Frequency
from taipy.config.common.scope import Scope
from taipy.config.exceptions.exceptions import InvalidConfigurationId
from taipy.core.common._utils import _Subscriber
from taipy.core.cycle._cycle_manager_factory import _CycleManagerFactory
from taipy.core.cycle.cycle import Cycle, CycleId
from taipy.core.data._data_manager_factory import _DataManagerFactory
from taipy.core.data.in_memory import DataNode, InMemoryDataNode
from taipy.core.data.pickle import PickleDataNode
from taipy.core.exceptions.exceptions import SequenceTaskDoesNotExistInScenario, SequenceAlreadyExists
from taipy.core.scenario._scenario_manager_factory import _ScenarioManagerFactory
from taipy.core.scenario.scenario import Scenario
from taipy.core.scenario.scenario_id import ScenarioId
from taipy.core.sequence.sequence import Sequence
from taipy.core.sequence.sequence_id import SequenceId
from taipy.core.task._task_manager_factory import _TaskManagerFactory
from taipy.core.task.task import Task, TaskId


def test_create_primary_scenario(cycle):
    scenario = Scenario("foo", set(), {"key": "value"}, is_primary=True, cycle=cycle)
    assert scenario.id is not None
    assert scenario.config_id == "foo"
    assert scenario.tasks == {}
    assert scenario.additional_data_nodes == {}
    assert scenario.data_nodes == {}
    assert scenario.sequences == {}
    assert scenario.properties == {"key": "value"}
    assert scenario.key == "value"
    assert scenario.creation_date is not None
    assert scenario.is_primary
    assert scenario.cycle == cycle
    assert scenario.tags == set()
    assert scenario.get_simple_label() == scenario.config_id

    with mock.patch("taipy.core.get") as get_mck:

        class MockOwner:
            label = "owner_label"

            def get_label(self):
                return self.label

        get_mck.return_value = MockOwner()
        assert scenario.get_label() == "owner_label > " + scenario.config_id


def test_create_scenario_at_time(current_datetime):
    scenario = Scenario("bar", set(), {}, set(), ScenarioId("baz"), creation_date=current_datetime)
    assert scenario.id == "baz"
    assert scenario.config_id == "bar"
    assert scenario.tasks == {}
    assert scenario.additional_data_nodes == {}
    assert scenario.data_nodes == {}
    assert scenario.sequences == {}
    assert scenario.properties == {}
    assert scenario.creation_date == current_datetime
    assert not scenario.is_primary
    assert scenario.cycle is None
    assert scenario.tags == set()
    assert scenario.get_simple_label() == scenario.config_id
    assert scenario.get_label() == scenario.config_id


def test_create_scenario_with_task_and_additional_dn_and_sequence():
    dn_1 = PickleDataNode("xyz", Scope.SCENARIO)
    dn_2 = PickleDataNode("abc", Scope.SCENARIO)
    task = Task("qux", {}, print, [dn_1])

    scenario = Scenario("quux", {task}, {}, {dn_2}, sequences={"acb": {"tasks": [task]}})
    sequence = scenario.sequences["acb"]
    assert scenario.id is not None
    assert scenario.config_id == "quux"
    assert len(scenario.tasks) == 1
    assert len(scenario.additional_data_nodes) == 1
    assert len(scenario.data_nodes) == 2
    assert len(scenario.sequences) == 1
    assert scenario.qux == task
    assert scenario.xyz == dn_1
    assert scenario.abc == dn_2
    assert scenario.acb == sequence
    assert scenario.properties == {}
    assert scenario.tags == set()


def test_create_scenario_invalid_config_id():
    with pytest.raises(InvalidConfigurationId):
        Scenario("foo bar", set(), {})


def test_create_scenario_and_add_sequences():
    input_1 = PickleDataNode("input_1", Scope.SCENARIO)
    output_1 = PickleDataNode("output_1", Scope.SCENARIO)
    output_2 = PickleDataNode("output_2", Scope.SCENARIO)
    additional_dn_1 = PickleDataNode("additional_1", Scope.SCENARIO)
    additional_dn_2 = PickleDataNode("additional_2", Scope.SCENARIO)
    task_1 = Task("task_1", {}, print, [input_1], [output_1], TaskId("task_id_1"))
    task_2 = Task("task_2", {}, print, [output_1], [output_2], TaskId("task_id_2"))

    data_manager = _DataManagerFactory._build_manager()
    task_manager = _TaskManagerFactory._build_manager()
    data_manager._set(input_1)
    data_manager._set(output_1)
    data_manager._set(output_2)
    data_manager._set(additional_dn_1)
    data_manager._set(additional_dn_2)
    task_manager._set(task_1)
    task_manager._set(task_2)

    scenario = Scenario("scenario", {task_1}, {})
    scenario.sequences = {"sequence_1": {"tasks": [task_1]}, "sequence_2": {"tasks": []}}
    assert scenario.id is not None
    assert scenario.config_id == "scenario"
    assert len(scenario.tasks) == 1
    assert scenario.tasks.keys() == {task_1.config_id}
    assert len(scenario.additional_data_nodes) == 0
    assert scenario.additional_data_nodes == {}
    assert len(scenario.data_nodes) == 2
    assert scenario.data_nodes == {
        input_1.config_id: input_1,
        output_1.config_id: output_1,
    }
    assert len(scenario.sequences) == 2
    assert scenario.sequence_1 == scenario.sequences["sequence_1"]
    assert scenario.sequence_2 == scenario.sequences["sequence_2"]
    assert scenario.sequences == {"sequence_1": scenario.sequence_1, "sequence_2": scenario.sequence_2}


def test_create_scenario_overlapping_sequences():
    input_1 = PickleDataNode("input_1", Scope.SCENARIO)
    output_1 = PickleDataNode("output_1", Scope.SCENARIO)
    output_2 = PickleDataNode("output_2", Scope.SCENARIO)
    additional_dn_1 = PickleDataNode("additional_1", Scope.SCENARIO)
    additional_dn_2 = PickleDataNode("additional_2", Scope.SCENARIO)
    task_1 = Task("task_1", {}, print, [input_1], [output_1], TaskId("task_id_1"))
    task_2 = Task("task_2", {}, print, [output_1], [output_2], TaskId("task_id_2"))
    data_manager = _DataManagerFactory._build_manager()
    task_manager = _TaskManagerFactory._build_manager()
    data_manager._set(input_1)
    data_manager._set(output_1)
    data_manager._set(output_2)
    data_manager._set(additional_dn_1)
    data_manager._set(additional_dn_2)
    task_manager._set(task_1)
    task_manager._set(task_2)

    scenario = Scenario("scenario", {task_1, task_2}, {})
    scenario.add_sequence("sequence_1", [task_1])
    scenario.add_sequence("sequence_2", [task_1, task_2])
    assert scenario.id is not None
    assert scenario.config_id == "scenario"
    assert len(scenario.tasks) == 2
    assert scenario.tasks.keys() == {task_1.config_id, task_2.config_id}
    assert len(scenario.additional_data_nodes) == 0
    assert scenario.additional_data_nodes == {}
    assert len(scenario.data_nodes) == 3
    assert scenario.data_nodes == {
        input_1.config_id: input_1,
        output_1.config_id: output_1,
        output_2.config_id: output_2,
    }
    sequence_1 = scenario.sequences["sequence_1"]
    sequence_2 = scenario.sequences["sequence_2"]
    assert scenario.sequences == {"sequence_1": sequence_1, "sequence_2": sequence_2}
    scenario.remove_sequences(["sequence_2"])
    assert scenario.sequences == {"sequence_1": sequence_1}
    scenario.remove_sequences(["sequence_1"])
    assert scenario.sequences == {}


def test_create_scenario_one_additional_dn():
    input_1 = PickleDataNode("input_1", Scope.SCENARIO)
    input_2 = PickleDataNode("input_2", Scope.SCENARIO)
    output_1 = PickleDataNode("output_1", Scope.SCENARIO)
    output_2 = PickleDataNode("output_2", Scope.SCENARIO)
    additional_dn_1 = PickleDataNode("additional_1", Scope.SCENARIO)
    additional_dn_2 = PickleDataNode("additional_2", Scope.SCENARIO)
    task_1 = Task("task_1", {}, print, [input_1], [output_1], TaskId("task_id_1"))
    task_2 = Task("task_2", {}, print, [input_2], [output_2], TaskId("task_id_2"))
    data_manager = _DataManagerFactory._build_manager()
    task_manager = _TaskManagerFactory._build_manager()
    data_manager._set(input_1)
    data_manager._set(output_1)
    data_manager._set(input_2)
    data_manager._set(output_2)
    data_manager._set(additional_dn_1)
    data_manager._set(additional_dn_2)
    task_manager._set(task_1)
    task_manager._set(task_2)

    scenario = Scenario("scenario", set(), {}, {additional_dn_1})
    assert scenario.id is not None
    assert scenario.config_id == "scenario"
    assert len(scenario.tasks) == 0
    assert len(scenario.additional_data_nodes) == 1
    assert len(scenario.data_nodes) == 1
    assert scenario.tasks == {}
    assert scenario.additional_data_nodes == {additional_dn_1.config_id: additional_dn_1}
    assert scenario.data_nodes == {additional_dn_1.config_id: additional_dn_1}


def test_create_scenario_wth_additional_dns():
    input_1 = PickleDataNode("input_1", Scope.SCENARIO)
    input_2 = PickleDataNode("input_2", Scope.SCENARIO)
    output_1 = PickleDataNode("output_1", Scope.SCENARIO)
    output_2 = PickleDataNode("output_2", Scope.SCENARIO)
    additional_dn_1 = PickleDataNode("additional_1", Scope.SCENARIO)
    additional_dn_2 = PickleDataNode("additional_2", Scope.SCENARIO)
    task_1 = Task("task_1", {}, print, [input_1], [output_1], TaskId("task_id_1"))
    task_2 = Task("task_2", {}, print, [input_2], [output_2], TaskId("task_id_2"))
    data_manager = _DataManagerFactory._build_manager()
    task_manager = _TaskManagerFactory._build_manager()
    data_manager._set(input_1)
    data_manager._set(output_1)
    data_manager._set(input_2)
    data_manager._set(output_2)
    data_manager._set(additional_dn_1)
    data_manager._set(additional_dn_2)
    task_manager._set(task_1)
    task_manager._set(task_2)

    scenario = Scenario("scenario", set(), {}, {additional_dn_1, additional_dn_2})
    assert scenario.id is not None
    assert scenario.config_id == "scenario"
    assert len(scenario.tasks) == 0
    assert len(scenario.additional_data_nodes) == 2
    assert len(scenario.data_nodes) == 2
    assert scenario.tasks == {}
    assert scenario.additional_data_nodes == {
        additional_dn_1.config_id: additional_dn_1,
        additional_dn_2.config_id: additional_dn_2,
    }
    assert scenario.data_nodes == {
        additional_dn_1.config_id: additional_dn_1,
        additional_dn_2.config_id: additional_dn_2,
    }

    scenario_1 = Scenario("scenario_1", {task_1}, {}, {additional_dn_1})
    assert scenario_1.id is not None
    assert scenario_1.config_id == "scenario_1"
    assert len(scenario_1.tasks) == 1
    assert len(scenario_1.additional_data_nodes) == 1
    assert len(scenario_1.data_nodes) == 3
    assert scenario_1.tasks.keys() == {task_1.config_id}
    assert scenario_1.additional_data_nodes == {
        additional_dn_1.config_id: additional_dn_1,
    }
    assert scenario_1.data_nodes == {
        input_1.config_id: input_1,
        output_1.config_id: output_1,
        additional_dn_1.config_id: additional_dn_1,
    }

    scenario_2 = Scenario("scenario_2", {task_1, task_2}, {}, {additional_dn_1, additional_dn_2})
    assert scenario_2.id is not None
    assert scenario_2.config_id == "scenario_2"
    assert len(scenario_2.tasks) == 2
    assert len(scenario_2.additional_data_nodes) == 2
    assert len(scenario_2.data_nodes) == 6
    assert scenario_2.tasks.keys() == {task_1.config_id, task_2.config_id}
    assert scenario_2.additional_data_nodes == {
        additional_dn_1.config_id: additional_dn_1,
        additional_dn_2.config_id: additional_dn_2,
    }
    assert {dn_config_id: dn.id for dn_config_id, dn in scenario_2.data_nodes.items()} == {
        input_1.config_id: input_1.id,
        output_1.config_id: output_1.id,
        input_2.config_id: input_2.id,
        output_2.config_id: output_2.id,
        additional_dn_1.config_id: additional_dn_1.id,
        additional_dn_2.config_id: additional_dn_2.id,
    }


def test_raise_sequence_tasks_not_in_scenario(data_node):
    task_1 = Task("task_1", {}, print, output=[data_node])
    task_2 = Task("task_2", {}, print, input=[data_node])

    with pytest.raises(SequenceTaskDoesNotExistInScenario) as err:
        Scenario("scenario", set(), {}, sequences={"sequence": {"tasks": [task_1]}}, scenario_id="SCENARIO_scenario")
    assert err.value.args == ([task_1.id], "sequence", "SCENARIO_scenario")

    with pytest.raises(SequenceTaskDoesNotExistInScenario) as err:
        Scenario(
            "scenario",
            [task_1],
            {},
            sequences={"sequence": {"tasks": [task_1, task_2]}},
            scenario_id="SCENARIO_scenario",
        )
    assert err.value.args == ([task_2.id], "sequence", "SCENARIO_scenario")

    Scenario("scenario", {task_1}, {}, sequences={"sequence": {"tasks": [task_1]}})
    Scenario(
        "scenario",
        [task_1, task_2],
        {},
        sequences={"sequence_1": {"tasks": [task_1]}, "sequence_2": {"tasks": [task_1, task_2]}},
    )


def test_adding_sequence_raises_tasks_not_in_scenario(data_node):
    task_1 = Task("task_1", {}, print, output=[data_node])
    task_2 = Task("task_2", {}, print, input=[data_node])
    scenario = Scenario("scenario", [task_1], {})
    scenario_manager = _ScenarioManagerFactory._build_manager()
    task_manager = _TaskManagerFactory._build_manager()
    scenario_manager._set(scenario)
    task_manager._set(task_1)
    task_manager._set(task_2)

    scenario.add_sequences({"sequence_1": {}})

    with pytest.raises(SequenceTaskDoesNotExistInScenario) as err:
        scenario.add_sequence("sequence_2", [task_2])
    assert err.value.args == ([task_2.id], "sequence_2", scenario.id)

    scenario.add_sequence("sequence_3", [task_1])

    with pytest.raises(SequenceTaskDoesNotExistInScenario) as err:
        scenario.add_sequences({"sequence_4": [task_2]})
    assert err.value.args == ([task_2.id], "sequence_4", scenario.id)

    with pytest.raises(SequenceTaskDoesNotExistInScenario) as err:
        scenario.add_sequences({"sequence_5": [task_1, task_2]})
    assert err.value.args == ([task_2.id], "sequence_5", scenario.id)

    scenario.tasks = [task_1, task_2]
    scenario.add_sequence("sequence_6", [task_1, task_2])


def test_adding_existing_sequence_raises_exception(data_node):
    task_1 = Task("task_1", {}, print, output=[data_node])
    _TaskManagerFactory._build_manager()._set(task_1)
    task_2 = Task("task_2", {}, print, input=[data_node])
    _TaskManagerFactory._build_manager()._set(task_2)
    scenario = Scenario("scenario", tasks={task_1, task_2}, properties={})
    _ScenarioManagerFactory._build_manager()._set(scenario)

    scenario.add_sequence("sequence_1", [task_1])
    with pytest.raises(SequenceAlreadyExists):
        scenario.add_sequence("sequence_1", [task_2])


def test_renaming_existing_sequence_raises_exception(data_node):
    task_1 = Task("task_1", {}, print, output=[data_node])
    _TaskManagerFactory._build_manager()._set(task_1)
    task_2 = Task("task_2", {}, print, input=[data_node])
    _TaskManagerFactory._build_manager()._set(task_2)
    scenario = Scenario("scenario", {task_1, task_2}, {})
    _ScenarioManagerFactory._build_manager()._set(scenario)

    scenario.add_sequence("sequence_1", [task_1])
    scenario.add_sequence("sequence_2", [task_2])
    with pytest.raises(SequenceAlreadyExists) as err:
        scenario.rename_sequence("sequence_1", "sequence_2")


def test_add_rename_and_remove_sequences():
    data_node_1 = InMemoryDataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = InMemoryDataNode("bar", Scope.SCENARIO, "s2")
    data_node_3 = InMemoryDataNode("qux", Scope.SCENARIO, "s3")
    data_node_4 = InMemoryDataNode("quux", Scope.SCENARIO, "s4")
    data_node_5 = InMemoryDataNode("quuz", Scope.SCENARIO, "s5")
    task_1 = Task("grault",{}, print,[data_node_1, data_node_2],[data_node_3], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_3], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_3], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_3], [data_node_4], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_5], [data_node_3], TaskId("t5"))
    scenario = Scenario("quest", {task_1, task_2, task_3, task_4, task_5}, {}, [], scenario_id=ScenarioId("s1"))

    sequence_1 = Sequence({"name": "seq_1"}, [task_1], SequenceId(f"SEQUENCE_seq_1_{scenario.id}"))
    sequence_2 = Sequence({"name": "seq_2"}, [task_1, task_2], SequenceId(f"SEQUENCE_seq_2_{scenario.id}"))
    new_seq_2 = Sequence({"name": "seq_2"}, [task_1, task_2], SequenceId(f"SEQUENCE_new_seq_2_{scenario.id}"))
    sequence_3 = Sequence({"name": "seq_3"}, [task_1, task_5, task_3], SequenceId(f"SEQUENCE_seq_3_{scenario.id}"))

    task_manager = _TaskManagerFactory._build_manager()
    data_manager = _DataManagerFactory._build_manager()
    scenario_manager = _ScenarioManagerFactory._build_manager()
    for dn in [data_node_1, data_node_2, data_node_3, data_node_4, data_node_5]:
        data_manager._set(dn)
    for t in [task_1, task_2, task_3, task_4, task_5]:
        task_manager._set(t)
    scenario_manager._set(scenario)

    assert scenario.get_inputs() == {data_node_1, data_node_2, data_node_5}
    assert scenario._get_set_of_tasks() == {task_1, task_2, task_3, task_4, task_5}
    assert len(scenario.sequences) == 0

    scenario.sequences = {"seq_1": {"tasks": [task_1]}}
    assert scenario.sequences == {"seq_1": sequence_1}

    scenario.add_sequences({"seq_2": [task_1, task_2]})
    assert scenario.sequences == {"seq_1": sequence_1, "seq_2": sequence_2}

    scenario.remove_sequences(["seq_1"])
    assert scenario.sequences == {"seq_2": sequence_2}

    scenario.add_sequences({"seq_1": [task_1], "seq 3": [task_1, task_5, task_3]})
    assert scenario.sequences == {"seq_2": sequence_2, "seq_1": sequence_1, "seq 3": sequence_3}

    scenario.remove_sequences(["seq_2", "seq 3"])
    assert scenario.sequences == {"seq_1": sequence_1}

    scenario.add_sequence("seq_2", [task_1, task_2])
    assert scenario.sequences == {"seq_1": sequence_1, "seq_2": sequence_2}

    scenario.add_sequence("seq 3", [task_1.id, task_5.id, task_3.id])
    assert scenario.sequences == {"seq_1": sequence_1, "seq_2": sequence_2, "seq 3": sequence_3}

    scenario.remove_sequence("seq_1")
    assert scenario.sequences == {"seq_2": sequence_2, "seq 3": sequence_3}

    scenario.rename_sequence("seq_2", "new_seq_2")
    assert scenario.sequences == {"new_seq_2": new_seq_2, "seq 3": sequence_3}


def test_update_sequence(data_node):
    task_1 = Task("foo",{}, print,[data_node],[], TaskId("t1"))
    task_2 = Task("bar", {}, print, [], [data_node], id=TaskId("t2"))
    scenario = Scenario("baz", {task_1, task_2}, {})
    scenario.add_sequence("seq_1", [task_1])

    assert len(scenario.sequences) == 1
    assert scenario.sequences["seq_1"].tasks == {"foo": task_1}
    assert scenario.sequences["seq_1"].name == "seq_1"
    scenario.update_sequence("seq_1", [task_2], {"new_key": "new_value"}, [])
    assert len(scenario.sequences) == 1
    assert scenario.sequences["seq_1"].tasks == {"bar": task_2}
    assert scenario.sequences["seq_1"].name == "seq_1"
    assert scenario.sequences["seq_1"].properties["new_key"] == "new_value"


def test_add_property_to_scenario():
    scenario = Scenario("foo", set(), {"key": "value"})
    assert scenario.properties == {"key": "value"}
    assert scenario.key == "value"

    scenario.properties["new_key"] = "new_value"

    assert scenario.properties == {"key": "value", "new_key": "new_value"}
    assert scenario.key == "value"
    assert scenario.new_key == "new_value"


def test_add_cycle_to_scenario(cycle):
    scenario = Scenario("foo", set(), {})
    assert scenario.cycle is None
    _CycleManagerFactory._build_manager()._set(cycle)
    scenario.cycle = cycle

    assert scenario.cycle == cycle


def test_add_and_remove_subscriber():
    scenario = Scenario("foo", set(), {})

    scenario._add_subscriber(print)
    assert len(scenario.subscribers) == 1

    scenario._remove_subscriber(print)
    assert len(scenario.subscribers) == 0


def test_add_and_remove_tag():
    scenario = Scenario("foo", set(), {})

    assert len(scenario.tags) == 0
    scenario._add_tag("tag")
    assert len(scenario.tags) == 1

    scenario._remove_tag("tag")
    assert len(scenario.tags) == 0


def test_auto_set_and_reload(cycle, current_datetime, task, data_node):
    scenario_1 = Scenario(
        "foo",
        set(),
        {"name": "bar"},
        set(),
        creation_date=current_datetime,
        is_primary=True,
        cycle=None,
    )
    additional_dn = InMemoryDataNode("additional_dn", Scope.SCENARIO)
    example_date = datetime.fromisoformat("2021-11-11T11:11:01.000001")
    tmp_cycle = Cycle(
        Frequency.WEEKLY,
        {},
        creation_date=example_date,
        start_date=example_date,
        end_date=example_date,
        name="cc",
        id=CycleId("tmp_cc_id"),
    )

    sequence_1_name = "sequence_1"
    sequence_1 = Sequence({}, [], SequenceId(f"SEQUENCE_{sequence_1_name}_{scenario_1.id}"))

    tmp_sequence_name = "tmp_sequence"
    tmp_sequence = Sequence(
        {},
        [],
        SequenceId(f"SEQUENCE_{tmp_sequence_name}_{scenario_1.id}"),
    )

    _TaskManagerFactory._build_manager()._set(task)
    _DataManagerFactory._build_manager()._set(data_node)
    _DataManagerFactory._build_manager()._set(additional_dn)
    _CycleManagerFactory._build_manager()._set(cycle)
    scenario_manager = _ScenarioManagerFactory._build_manager()
    cycle_manager = _CycleManagerFactory._build_manager()
    cycle_manager._set(cycle)
    cycle_manager._set(tmp_cycle)
    scenario_manager._set(scenario_1)

    scenario_2 = scenario_manager._get(scenario_1)
    assert scenario_1.config_id == "foo"
    assert scenario_2.config_id == "foo"

    # auto set & reload on name attribute
    assert scenario_1.name == "bar"
    assert scenario_2.name == "bar"
    scenario_1.name = "zab"
    assert scenario_1.name == "zab"
    assert scenario_2.name == "zab"
    scenario_2.name = "baz"
    assert scenario_1.name == "baz"
    assert scenario_2.name == "baz"

    # auto set & reload on sequences attribute
    assert len(scenario_1.sequences) == 0
    assert len(scenario_2.sequences) == 0
    scenario_1.sequences = {tmp_sequence_name: {}}
    assert len(scenario_1.sequences) == 1
    assert scenario_1.sequences[tmp_sequence_name] == tmp_sequence
    assert len(scenario_2.sequences) == 1
    assert scenario_2.sequences[tmp_sequence_name] == tmp_sequence
    scenario_2.add_sequences({sequence_1_name: []})
    assert len(scenario_1.sequences) == 2
    assert scenario_1.sequences == {sequence_1_name: sequence_1, tmp_sequence_name: tmp_sequence}
    assert len(scenario_2.sequences) == 2
    assert scenario_2.sequences == {sequence_1_name: sequence_1, tmp_sequence_name: tmp_sequence}
    scenario_2.remove_sequences([tmp_sequence_name])
    assert len(scenario_1.sequences) == 1
    assert scenario_1.sequences == {sequence_1_name: sequence_1}
    assert len(scenario_2.sequences) == 1
    assert scenario_2.sequences == {sequence_1_name: sequence_1}

    assert len(scenario_1.tasks) == 0
    assert len(scenario_1.data_nodes) == 0
    scenario_1.tasks = {task}
    assert len(scenario_1.tasks) == 1
    assert scenario_1.tasks[task.config_id] == task
    assert len(scenario_1.data_nodes) == 2
    assert len(scenario_2.tasks) == 1
    assert scenario_2.tasks[task.config_id] == task
    assert len(scenario_2.data_nodes) == 2

    assert len(scenario_1.additional_data_nodes) == 0
    scenario_1.additional_data_nodes = {additional_dn}
    assert len(scenario_1.additional_data_nodes) == 1
    assert scenario_1.additional_data_nodes[additional_dn.config_id] == additional_dn
    assert len(scenario_1.data_nodes) == 3
    assert len(scenario_2.additional_data_nodes) == 1
    assert scenario_2.additional_data_nodes[additional_dn.config_id] == additional_dn
    assert len(scenario_2.data_nodes) == 3

    new_datetime = current_datetime + timedelta(1)
    new_datetime_1 = current_datetime + timedelta(2)

    # auto set & reload on name attribute
    assert scenario_1.creation_date == current_datetime
    assert scenario_2.creation_date == current_datetime
    scenario_1.creation_date = new_datetime_1
    assert scenario_1.creation_date == new_datetime_1
    assert scenario_2.creation_date == new_datetime_1
    scenario_2.creation_date = new_datetime
    assert scenario_1.creation_date == new_datetime
    assert scenario_2.creation_date == new_datetime

    # auto set & reload on cycle attribute
    assert scenario_1.cycle is None
    assert scenario_2.cycle is None
    scenario_1.cycle = tmp_cycle
    assert scenario_1.cycle == tmp_cycle
    assert scenario_2.cycle == tmp_cycle
    scenario_2.cycle = cycle
    assert scenario_1.cycle == cycle
    assert scenario_2.cycle == cycle

    # auto set & reload on is_primary attribute
    assert scenario_1.is_primary
    assert scenario_2.is_primary
    scenario_1.is_primary = False
    assert not scenario_1.is_primary
    assert not scenario_2.is_primary
    scenario_2.is_primary = True
    assert scenario_1.is_primary
    assert scenario_2.is_primary

    # auto set & reload on subscribers attribute
    assert len(scenario_1.subscribers) == 0
    assert len(scenario_2.subscribers) == 0
    scenario_1.subscribers.append(_Subscriber(print, []))
    assert len(scenario_1.subscribers) == 1
    assert len(scenario_2.subscribers) == 1
    scenario_2.subscribers.append(_Subscriber(print, []))
    assert len(scenario_1.subscribers) == 2
    assert len(scenario_2.subscribers) == 2

    scenario_1.subscribers.clear()
    assert len(scenario_1.subscribers) == 0
    assert len(scenario_2.subscribers) == 0

    scenario_1.subscribers.extend([_Subscriber(print, []), _Subscriber(map, [])])
    assert len(scenario_1.subscribers) == 2
    assert len(scenario_2.subscribers) == 2

    scenario_1.subscribers.remove(_Subscriber(print, []))
    assert len(scenario_1.subscribers) == 1
    assert len(scenario_2.subscribers) == 1

    scenario_1.subscribers + print + len
    assert len(scenario_1.subscribers) == 3
    assert len(scenario_2.subscribers) == 3

    scenario_1.subscribers = []
    assert len(scenario_1.subscribers) == 0
    assert len(scenario_2.subscribers) == 0

    assert len(scenario_1.tags) == 0
    scenario_1.tags = {"hi"}
    assert len(scenario_1.tags) == 1
    assert len(scenario_2.tags) == 1

    with scenario_1 as scenario:
        assert scenario.config_id == "foo"
        assert len(scenario.tasks) == 1
        assert len(scenario.sequences) == 1
        assert scenario.sequences["sequence_1"] == sequence_1
        assert scenario.tasks[task.config_id] == task
        assert len(scenario.additional_data_nodes) == 1
        assert scenario.additional_data_nodes[additional_dn.config_id] == additional_dn
        assert scenario.creation_date == new_datetime
        assert scenario.cycle == cycle
        assert scenario.is_primary
        assert len(scenario.subscribers) == 0
        assert len(scenario.tags) == 1
        assert scenario._is_in_context
        assert scenario.name == "baz"

        new_datetime_2 = new_datetime + timedelta(5)
        scenario._config_id = "foo"
        scenario.tasks = set()
        scenario.additional_data_nodes = set()
        scenario.remove_sequences([sequence_1_name])
        scenario.creation_date = new_datetime_2
        scenario.cycle = None
        scenario.is_primary = False
        scenario.subscribers = [print]
        scenario.tags = None
        scenario.name = "qux"

        assert scenario.config_id == "foo"
        assert len(scenario.sequences) == 1
        assert scenario.sequences[sequence_1_name] == sequence_1
        assert len(scenario.tasks) == 1
        assert scenario.tasks[task.config_id] == task
        assert len(scenario.additional_data_nodes) == 1
        assert scenario.additional_data_nodes[additional_dn.config_id] == additional_dn
        assert scenario.creation_date == new_datetime
        assert scenario.cycle == cycle
        assert scenario.is_primary
        assert len(scenario.subscribers) == 0
        assert len(scenario.tags) == 1
        assert scenario._is_in_context
        assert scenario.name == "baz"

    assert scenario_1.config_id == "foo"
    assert len(scenario_1.sequences) == 0
    assert len(scenario_1.tasks) == 0
    assert len(scenario_1.additional_data_nodes) == 0
    assert scenario_1.tasks == {}
    assert scenario_1.additional_data_nodes == {}
    assert scenario_1.creation_date == new_datetime_2
    assert scenario_1.cycle is None
    assert not scenario_1.is_primary
    assert len(scenario_1.subscribers) == 1
    assert len(scenario_1.tags) == 0
    assert not scenario_1._is_in_context


def test_auto_set_and_reload_properties():
    scenario_1 = Scenario(
        "foo",
        set(),
        {"name": "baz"},
    )

    scenario_manager = _ScenarioManagerFactory._build_manager()
    scenario_manager._set(scenario_1)

    scenario_2 = scenario_manager._get(scenario_1)

    # auto set & reload on properties attribute
    assert scenario_1.properties == {"name": "baz"}
    assert scenario_2.properties == {"name": "baz"}
    scenario_1._properties["qux"] = 4
    assert scenario_1.properties["qux"] == 4
    assert scenario_2.properties["qux"] == 4

    assert scenario_1.properties == {"name": "baz", "qux": 4}
    assert scenario_2.properties == {"name": "baz", "qux": 4}
    scenario_2._properties["qux"] = 5
    assert scenario_1.properties["qux"] == 5
    assert scenario_2.properties["qux"] == 5

    scenario_1.properties["temp_key_1"] = "temp_value_1"
    scenario_1.properties["temp_key_2"] = "temp_value_2"
    assert scenario_1.properties == {
        "name": "baz",
        "qux": 5,
        "temp_key_1": "temp_value_1",
        "temp_key_2": "temp_value_2",
    }
    assert scenario_2.properties == {
        "name": "baz",
        "qux": 5,
        "temp_key_1": "temp_value_1",
        "temp_key_2": "temp_value_2",
    }
    scenario_1.properties.pop("temp_key_1")
    assert "temp_key_1" not in scenario_1.properties.keys()
    assert "temp_key_1" not in scenario_1.properties.keys()
    assert scenario_1.properties == {
        "name": "baz",
        "qux": 5,
        "temp_key_2": "temp_value_2",
    }
    assert scenario_2.properties == {
        "name": "baz",
        "qux": 5,
        "temp_key_2": "temp_value_2",
    }
    scenario_2.properties.pop("temp_key_2")
    assert scenario_1.properties == {"name": "baz", "qux": 5}
    assert scenario_2.properties == {"name": "baz", "qux": 5}
    assert "temp_key_2" not in scenario_1.properties.keys()
    assert "temp_key_2" not in scenario_2.properties.keys()

    scenario_1.properties["temp_key_3"] = 0
    assert scenario_1.properties == {"name": "baz", "qux": 5, "temp_key_3": 0}
    assert scenario_2.properties == {"name": "baz", "qux": 5, "temp_key_3": 0}
    scenario_1.properties.update({"temp_key_3": 1})
    assert scenario_1.properties == {"name": "baz", "qux": 5, "temp_key_3": 1}
    assert scenario_2.properties == {"name": "baz", "qux": 5, "temp_key_3": 1}
    scenario_1.properties.update(dict())
    assert scenario_1.properties == {"name": "baz", "qux": 5, "temp_key_3": 1}
    assert scenario_2.properties == {"name": "baz", "qux": 5, "temp_key_3": 1}
    scenario_1.properties["temp_key_4"] = 0
    scenario_1.properties["temp_key_5"] = 0

    with scenario_1 as scenario:
        assert scenario.properties["qux"] == 5
        assert scenario.properties["temp_key_3"] == 1
        assert scenario.properties["temp_key_4"] == 0
        assert scenario.properties["temp_key_5"] == 0

        scenario.properties["qux"] = 9
        scenario.properties.pop("temp_key_3")
        scenario.properties.pop("temp_key_4")
        scenario.properties.update({"temp_key_4": 1})
        scenario.properties.update({"temp_key_5": 2})
        scenario.properties.pop("temp_key_5")
        scenario.properties.update(dict())

        assert scenario._is_in_context
        assert scenario.properties["qux"] == 5
        assert scenario.properties["temp_key_3"] == 1
        assert scenario.properties["temp_key_4"] == 0
        assert scenario.properties["temp_key_5"] == 0

    assert not scenario_1._is_in_context
    assert scenario_1.properties["qux"] == 9
    assert "temp_key_3" not in scenario_1.properties.keys()
    assert scenario_1.properties["temp_key_4"] == 1
    assert "temp_key_5" not in scenario_1.properties.keys()


def test_is_deletable():
    with mock.patch("taipy.core.scenario._scenario_manager._ScenarioManager._is_deletable") as mock_submit:
        scenario = Scenario("foo", set(), {})
        scenario.is_deletable()
        mock_submit.assert_called_once_with(scenario)


def test_submit_scenario():
    with mock.patch("taipy.core.scenario._scenario_manager._ScenarioManager._submit") as mock_submit:
        scenario = Scenario("foo", set(), {})
        scenario.submit(force=False)
        mock_submit.assert_called_once_with(scenario, None, False, False, None)


def test_subscribe_scenario():
    with mock.patch("taipy.core.subscribe_scenario") as mock_subscribe:
        scenario = Scenario("foo", set(), {})
        scenario.subscribe(None)
        mock_subscribe.assert_called_once_with(None, None, scenario)


def test_unsubscribe_scenario():
    with mock.patch("taipy.core.unsubscribe_scenario") as mock_unsubscribe:
        scenario = Scenario("foo", set(), {})
        scenario.unsubscribe(None)
        mock_unsubscribe.assert_called_once_with(None, None, scenario)


def test_add_tag_scenario():
    with mock.patch("taipy.core.tag") as mock_add_tag:
        scenario = Scenario("foo", set(), {})
        scenario.add_tag("tag")
        mock_add_tag.assert_called_once_with(scenario, "tag")


def test_remove_tag_scenario():
    with mock.patch("taipy.core.untag") as mock_remove_tag:
        scenario = Scenario("foo", set(), {})
        scenario.remove_tag("tag")
        mock_remove_tag.assert_called_once_with(scenario, "tag")


def test_get_inputs_outputs_intermediate_data_nodes():
    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_3 = DataNode("baz", Scope.SCENARIO, "s3")
    data_node_4 = DataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = DataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = DataNode("corge", Scope.SCENARIO, "s7")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_3, data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_3], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], [data_node_6], TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario = Scenario("scenario", {task_1, task_2, task_3, task_4}, {}, set(), ScenarioId("s1"))
    # s1 ---             ---> s3 ---> t2 ---> s5 ----
    #       |           |                           |
    #       |---> t1 ---|      -------------------------> t3 ---> s6
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    assert scenario.get_inputs() == {data_node_1, data_node_2}
    assert scenario.get_outputs() == {data_node_6, data_node_7}
    assert scenario.get_intermediate() == {data_node_3, data_node_4, data_node_5}

    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = DataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = DataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = DataNode("corge", Scope.SCENARIO, "s7")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, None, [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], [data_node_6], TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario = Scenario("scenario", {task_1, task_2, task_3, task_4}, {}, set(), ScenarioId("s1"))
    # s1 ---      t2 ---> s5 ------
    #       |                     |
    #       |---> t1 ---|      -----> t3 ---> s6
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    assert scenario.get_inputs() == {data_node_1, data_node_2}
    assert scenario.get_outputs() == {data_node_6, data_node_7}
    assert scenario.get_intermediate() == {data_node_4, data_node_5}

    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = DataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = DataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = DataNode("corge", Scope.SCENARIO, "s7")
    data_node_8 = DataNode("d8", Scope.SCENARIO, "s8")
    data_node_9 = DataNode("d9", Scope.SCENARIO, "s9")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_6], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    task_5 = Task("t5", {}, print, [data_node_8], [data_node_9], TaskId("t5"))
    task_6 = Task("t6", {}, print, [data_node_7, data_node_9], id=TaskId("t6"))
    scenario = Scenario("scenario", {task_1, task_2, task_3, task_4, task_5, task_6}, {}, set(), ScenarioId("s1"))
    # s1 ---      s6 ---> t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7 ---> t6
    #                                              |
    # s8 -------> t5 -------> s9 ------------------
    assert scenario.get_inputs() == {data_node_1, data_node_2, data_node_6, data_node_8}
    assert scenario.get_outputs() == set()
    assert scenario.get_intermediate() == {data_node_5, data_node_4, data_node_7, data_node_9}

    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = DataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = DataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = DataNode("corge", Scope.SCENARIO, "s7")
    data_node_8 = DataNode("hugh", Scope.SCENARIO, "s8")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, output=[data_node_5], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_4], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4, data_node_6], [data_node_7], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_8], None, TaskId("t5"))
    scenario = Scenario("scenario", {task_1, task_2, task_3, task_4, task_5}, {}, set(), ScenarioId("sc1"))
    # s1 ---
    #       |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    # t2 ---> s5                   |
    # s8 ---> t5              s6 --|
    assert scenario.get_inputs() == {data_node_1, data_node_2, data_node_8, data_node_6}
    assert scenario.get_outputs() == {data_node_5, data_node_7}
    assert scenario.get_intermediate() == {data_node_4}


def test_is_ready_to_run():
    data_node_1 = PickleDataNode("foo", Scope.SCENARIO, "s1", properties={"default_data": 1})
    data_node_2 = PickleDataNode("bar", Scope.SCENARIO, "s2", properties={"default_data": 2})
    data_node_4 = PickleDataNode("qux", Scope.SCENARIO, "s4", properties={"default_data": 4})
    data_node_5 = PickleDataNode("quux", Scope.SCENARIO, "s5", properties={"default_data": 5})
    data_node_6 = PickleDataNode("quuz", Scope.SCENARIO, "s6", properties={"default_data": 6})
    data_node_7 = PickleDataNode("corge", Scope.SCENARIO, "s7", properties={"default_data": 7})
    data_node_8 = PickleDataNode("d8", Scope.SCENARIO, "s8", properties={"default_data": 8})
    data_node_9 = PickleDataNode("d9", Scope.SCENARIO, "s9", properties={"default_data": 9})
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_6], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    task_5 = Task("t5", {}, print, [data_node_8], [data_node_9], TaskId("t5"))
    task_6 = Task("t6", {}, print, [data_node_7, data_node_9], id=TaskId("t6"))
    scenario = Scenario("scenario", {task_1, task_2, task_3, task_4, task_5, task_6}, {}, set(), ScenarioId("s1"))
    # s1 ---      s6 ---> t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7 ---> t6
    #                                              |
    # s8 -------> t5 -------> s9 ------------------
    assert scenario.get_inputs() == {data_node_1, data_node_2, data_node_6, data_node_8}

    data_manager = _DataManagerFactory._build_manager()
    data_manager._delete_all()
    for dn in [data_node_1, data_node_2, data_node_4, data_node_5, data_node_6, data_node_7, data_node_8, data_node_9]:
        data_manager._set(dn)

    assert scenario.is_ready_to_run()

    data_node_1.edit_in_progress = True
    assert not scenario.is_ready_to_run()

    data_node_2.edit_in_progress = True
    assert not scenario.is_ready_to_run()

    data_node_6.edit_in_progress = True
    data_node_8.edit_in_progress = True
    assert not scenario.is_ready_to_run()

    data_node_1.edit_in_progress = False
    data_node_2.edit_in_progress = False
    data_node_6.edit_in_progress = False
    data_node_8.edit_in_progress = False
    assert scenario.is_ready_to_run()


def test_data_nodes_being_edited():
    data_node_1 = PickleDataNode("foo", Scope.SCENARIO, "s1", properties={"default_data": 1})
    data_node_2 = PickleDataNode("bar", Scope.SCENARIO, "s2", properties={"default_data": 2})
    data_node_4 = PickleDataNode("qux", Scope.SCENARIO, "s4", properties={"default_data": 4})
    data_node_5 = PickleDataNode("quux", Scope.SCENARIO, "s5", properties={"default_data": 5})
    data_node_6 = PickleDataNode("quuz", Scope.SCENARIO, "s6", properties={"default_data": 6})
    data_node_7 = PickleDataNode("corge", Scope.SCENARIO, "s7", properties={"default_data": 7})
    data_node_8 = PickleDataNode("d8", Scope.SCENARIO, "s8", properties={"default_data": 8})
    data_node_9 = PickleDataNode("d9", Scope.SCENARIO, "s9", properties={"default_data": 9})
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_6], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    task_5 = Task("t5", {}, print, [data_node_8], [data_node_9], TaskId("t5"))
    task_6 = Task("t6", {}, print, [data_node_7, data_node_9], id=TaskId("t6"))
    scenario = Scenario("scenario", {task_1, task_2, task_3, task_4, task_5, task_6}, {}, set(), ScenarioId("s1"))
    # s1 ---      s6 ---> t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7 ---> t6
    #                                              |
    # s8 -------> t5 -------> s9 ------------------

    data_manager = _DataManagerFactory._build_manager()
    for dn in [data_node_1, data_node_2, data_node_4, data_node_5, data_node_6, data_node_7, data_node_8, data_node_9]:
        data_manager._set(dn)

    assert len(scenario.data_nodes_being_edited()) == 0
    assert scenario.data_nodes_being_edited() == set()

    data_node_1.edit_in_progress = True
    assert len(scenario.data_nodes_being_edited()) == 1
    assert scenario.data_nodes_being_edited() == {data_node_1}

    data_node_2.edit_in_progress = True
    data_node_6.edit_in_progress = True
    data_node_8.edit_in_progress = True
    assert len(scenario.data_nodes_being_edited()) == 4
    assert scenario.data_nodes_being_edited() == {data_node_1, data_node_2, data_node_6, data_node_8}

    data_node_4.edit_in_progress = True
    data_node_5.edit_in_progress = True
    data_node_9.edit_in_progress = True
    assert len(scenario.data_nodes_being_edited()) == 7
    assert scenario.data_nodes_being_edited() == {
        data_node_1,
        data_node_2,
        data_node_4,
        data_node_5,
        data_node_6,
        data_node_8,
        data_node_9,
    }

    data_node_1.edit_in_progress = False
    data_node_2.edit_in_progress = False
    data_node_6.edit_in_progress = False
    data_node_8.edit_in_progress = False
    assert len(scenario.data_nodes_being_edited()) == 3
    assert scenario.data_nodes_being_edited() == {data_node_4, data_node_5, data_node_9}

    data_node_4.edit_in_progress = False
    data_node_5.edit_in_progress = False
    data_node_7.edit_in_progress = True
    assert len(scenario.data_nodes_being_edited()) == 2
    assert scenario.data_nodes_being_edited() == {data_node_7, data_node_9}

    data_node_7.edit_in_progress = False
    data_node_9.edit_in_progress = False
    assert len(scenario.data_nodes_being_edited()) == 0
    assert scenario.data_nodes_being_edited() == set()


def test_get_tasks():
    task_1 = Task("grault", {}, print, id=TaskId("t1"))
    task_2 = Task("garply", {}, print, id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, id=TaskId("t4"))
    scenario_1 = Scenario("scenario_1", {task_1, task_2, task_3, task_4}, {}, set(), ScenarioId("s1"))
    assert scenario_1.tasks == {"grault": task_1, "garply": task_2, "waldo": task_3, "fred": task_4}

    task_5 = Task("wallo", {}, print, id=TaskId("t5"))
    scenario_2 = Scenario("scenario_2", {task_1, task_2, task_3, task_4, task_5}, {}, set(), ScenarioId("s2"))
    assert scenario_2.tasks == {"grault": task_1, "garply": task_2, "waldo": task_3, "fred": task_4, "wallo": task_5}


def test_get_set_of_tasks():
    task_1 = Task("grault", {}, print, id=TaskId("t1"))
    task_2 = Task("garply", {}, print, id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, id=TaskId("t4"))
    scenario_1 = Scenario("scenario_1", {task_1, task_2, task_3, task_4}, {}, set(), ScenarioId("s1"))
    assert scenario_1._get_set_of_tasks() == {task_1, task_2, task_3, task_4}

    task_5 = Task("wallo", {}, print, id=TaskId("t5"))
    scenario_2 = Scenario("scenario_2", {task_1, task_2, task_3, task_4, task_5}, {}, set(), ScenarioId("s2"))
    assert scenario_2._get_set_of_tasks() == {task_1, task_2, task_3, task_4, task_5}


def test_get_sorted_tasks():
    def _assert_equal(tasks_a, tasks_b) -> bool:
        if len(tasks_a) != len(tasks_b):
            return False
        for i in range(len(tasks_a)):
            task_a, task_b = tasks_a[i], tasks_b[i]
            if isinstance(task_a, list) and isinstance(task_b, list):
                if not _assert_equal(task_a, task_b):
                    return False
            elif isinstance(task_a, list) or isinstance(task_b, list):
                return False
            else:
                index_task_b = tasks_b.index(task_a)
                if any(isinstance(task_b, list) for task_b in tasks_b[i : index_task_b + 1]):
                    return False
        return True

    # s1 ---             ---> s3 ---> t2 ---> s5 ----
    #       |           |                           |
    #       |---> t1 ---|      -------------------------> t3 ---> s6
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7

    data_node_1 = InMemoryDataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = InMemoryDataNode("bar", Scope.SCENARIO, "s2")
    data_node_3 = InMemoryDataNode("baz", Scope.SCENARIO, "s3")
    data_node_4 = InMemoryDataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = InMemoryDataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = InMemoryDataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = InMemoryDataNode("corge", Scope.SCENARIO, "s7")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_3, data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_3], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], [data_node_6], TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario_1 = Scenario("scenario_1", {task_1, task_2, task_3, task_4}, {}, [], ScenarioId("s1"))

    assert scenario_1.get_inputs() == {data_node_1, data_node_2}
    assert scenario_1._get_set_of_tasks() == {task_1, task_2, task_3, task_4}
    _assert_equal(scenario_1._get_sorted_tasks(), [[task_1], [task_2, task_4], [task_3]])

    # s1 ---              t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3 ---> s6
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7

    data_node_1 = InMemoryDataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = InMemoryDataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = InMemoryDataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = InMemoryDataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = InMemoryDataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = InMemoryDataNode("corge", Scope.SCENARIO, "s7")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, None, [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], [data_node_6], TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario_2 = Scenario("scenario_2", {task_1, task_2, task_3, task_4}, {}, [], ScenarioId("s2"))

    assert scenario_2.get_inputs() == {data_node_1, data_node_2}
    assert scenario_2._get_set_of_tasks() == {task_1, task_2, task_3, task_4}
    _assert_equal(scenario_2._get_sorted_tasks(), [[task_1, task_2], [task_3, task_4]])

    # s1 ---      s6 ---> t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7

    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = DataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = DataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = DataNode("corge", Scope.SCENARIO, "s7")
    task_1 = Task(
        "grault",
        {},
        print,
        [data_node_1, data_node_2],
        [data_node_4],
        TaskId("t1"),
    )
    task_2 = Task("garply", {}, print, [data_node_6], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario_3 = Scenario("quest", [task_4, task_2, task_1, task_3], {}, [], scenario_id=ScenarioId("s3"))

    assert scenario_3.get_inputs() == {data_node_1, data_node_2, data_node_6}
    assert scenario_3._get_set_of_tasks() == {task_1, task_2, task_3, task_4}
    assert _assert_equal(scenario_3._get_sorted_tasks(), [[task_2, task_1], [task_4, task_3]])

    # s1 ---      s6 ---> t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7 ---> t6
    #                                              |
    # s8 -------> t5 -------> s9 ------------------

    data_node_1 = InMemoryDataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = InMemoryDataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = InMemoryDataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = InMemoryDataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = InMemoryDataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = InMemoryDataNode("corge", Scope.SCENARIO, "s7")
    data_node_8 = InMemoryDataNode("d8", Scope.SCENARIO, "s8")
    data_node_9 = InMemoryDataNode("d9", Scope.SCENARIO, "s9")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_6], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    task_5 = Task("t5", {}, print, [data_node_8], [data_node_9], TaskId("t5"))
    task_6 = Task("t6", {}, print, [data_node_7, data_node_9], id=TaskId("t6"))
    scenario_4 = Scenario("scenario_3", [task_1, task_2, task_3, task_4, task_5, task_6], {}, [], ScenarioId("s4"))

    assert scenario_4.get_inputs() == {data_node_1, data_node_2, data_node_6, data_node_8}
    assert scenario_4._get_set_of_tasks() == {task_1, task_2, task_3, task_4, task_5, task_6}
    _assert_equal(scenario_4._get_sorted_tasks(), [[task_1, task_2, task_5], [task_3, task_4], [task_6]])

    # s1 ---
    #       |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    # t2 ---> s5                      |
    # s8 ---> t5                 s6 --|

    data_node_1 = InMemoryDataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = InMemoryDataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = InMemoryDataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = InMemoryDataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = InMemoryDataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = InMemoryDataNode("corge", Scope.SCENARIO, "s7")
    data_node_8 = InMemoryDataNode("hugh", Scope.SCENARIO, "s8")
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, output=[data_node_5], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_4], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4, data_node_6], [data_node_7], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_8], None, TaskId("t5"))
    scenario_5 = Scenario("scenario_4", [task_1, task_2, task_3, task_4, task_5], {}, [], ScenarioId("s5"))

    assert scenario_5.get_inputs() == {data_node_1, data_node_2, data_node_8, data_node_6}
    assert scenario_5._get_set_of_tasks() == {task_1, task_2, task_3, task_4, task_5}
    _assert_equal(scenario_5._get_sorted_tasks(), [[task_1, task_2, task_5], [task_3, task_4]])

    #  p1  s1 ---
    #            |
    #            |---> t1 ---|      -----> t3
    #            |           |      |
    #      s2 ---             ---> s4 ---> t4 ---> s5
    #  p2  t2 ---> s4 ---> t3
    #  p3  s6 ---> t5

    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = DataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = DataNode("quuz", Scope.SCENARIO, "s6")
    task_1 = Task(
        "grault",
        {},
        print,
        [data_node_1, data_node_2],
        [data_node_4],
        TaskId("t1"),
    )
    task_2 = Task("garply", {}, print, output=[data_node_4], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_4], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_5], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_6], None, TaskId("t5"))
    scenario_6 = Scenario("quest", [task_1, task_2, task_3, task_4, task_5], {}, [], ScenarioId("s6"))

    assert scenario_6.get_inputs() == {data_node_1, data_node_2, data_node_6}
    assert scenario_6._get_set_of_tasks() == {task_1, task_2, task_3, task_4, task_5}
    _assert_equal(scenario_6._get_sorted_tasks(), [[task_5, task_2, task_1], [task_4, task_3]])

    #  p1  s1 ---
    #            |
    #            |---> t1 ---|      -----> t3
    #            |           |      |
    #      s2 ---             ---> s4 ---> t4 ---> s5
    #  p2  t2 ---> s4 ---> t3
    #  p3  s6 ---> t5 ---> s4 ---> t4 ---> s5

    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_4 = DataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = DataNode("quuz", Scope.SCENARIO, "s6")
    task_1 = Task(
        "grault",
        {},
        print,
        [data_node_1, data_node_2],
        [data_node_4],
        TaskId("t1"),
    )
    task_2 = Task("garply", {}, print, output=[data_node_4], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_4], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_5], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_6], [data_node_4], None, TaskId("t5"))
    scenario_7 = Scenario("quest", [task_4, task_1, task_2, task_3, task_5], {}, [], scenario_id=ScenarioId("s7"))

    assert scenario_7.get_inputs() == {data_node_1, data_node_2, data_node_6}
    assert scenario_7._get_set_of_tasks() == {task_1, task_2, task_3, task_4, task_5}
    _assert_equal(scenario_7._get_sorted_tasks(), [[task_5, task_2, task_1], [task_4, task_3]])

    #  p1  s1 ---
    #            |
    #            |---> t1 ---|      -----> t3
    #            |           |      |
    #      s2 ---             ---> s3 ---> t4 ---> s4
    #  p2  t2 ---> s3 ---> t3
    #  p3  s5 ---> t5 ---> s3 ---> t4 ---> s4
    #  p4  s3 ---> t4 ---> s4

    data_node_1 = DataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = DataNode("bar", Scope.SCENARIO, "s2")
    data_node_3 = DataNode("qux", Scope.SCENARIO, "s3")
    data_node_4 = DataNode("quux", Scope.SCENARIO, "s4")
    data_node_5 = DataNode("quuz", Scope.SCENARIO, "s5")
    task_1 = Task(
        "grault",
        {},
        print,
        [data_node_1, data_node_2],
        [data_node_3],
        TaskId("t1"),
    )
    task_2 = Task("garply", {}, print, output=[data_node_3], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_3], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_3], [data_node_4], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_5], [data_node_3], TaskId("t5"))
    scenario_8 = Scenario("quest", [task_1, task_2, task_3, task_4, task_5], {}, [], scenario_id=ScenarioId("s8"))

    assert scenario_8.get_inputs() == {data_node_1, data_node_2, data_node_5}
    assert scenario_8._get_set_of_tasks() == {task_1, task_2, task_3, task_4, task_5}
    _assert_equal(scenario_8._get_sorted_tasks(), [[task_5, task_2, task_1], [task_3, task_4]])


def test_check_consistency():
    data_node_1 = InMemoryDataNode("foo", Scope.SCENARIO, "s1")
    data_node_2 = InMemoryDataNode("bar", Scope.SCENARIO, "s2")
    data_node_3 = InMemoryDataNode("bar", Scope.SCENARIO, "s3")
    data_node_4 = InMemoryDataNode("qux", Scope.SCENARIO, "s4")
    data_node_5 = InMemoryDataNode("quux", Scope.SCENARIO, "s5")
    data_node_6 = InMemoryDataNode("quuz", Scope.SCENARIO, "s6")
    data_node_7 = InMemoryDataNode("corge", Scope.SCENARIO, "s7")
    data_node_8 = InMemoryDataNode("d8", Scope.SCENARIO, "s8")
    data_node_9 = InMemoryDataNode("d9", Scope.SCENARIO, "s9")

    scenario_0 = Scenario("scenario_0", [], {})
    assert scenario_0._is_consistent()

    task_1 = Task("foo", {}, print, [data_node_1], [data_node_2], TaskId("t1"))
    scenario_1 = Scenario("scenario_1", [task_1], {})
    assert scenario_1._is_consistent()

    # s1 ---             ---> s3 ---> t2 ---> s5 ----
    #       |           |                           |
    #       |---> t1 ---|      -------------------------> t3 ---> s6
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_3, data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_3], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], [data_node_6], TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario_2 = Scenario("scenario_2", {task_1, task_2, task_3, task_4}, {}, [], ScenarioId("s1"))
    assert scenario_2._is_consistent()

    # s1 ---              t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3 ---> s6
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, None, [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], [data_node_6], TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario_3 = Scenario("scenario_3", {task_1, task_2, task_3, task_4}, {}, [], ScenarioId("s2"))
    assert scenario_3._is_consistent()

    # s1 ---      s6 ---> t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_6], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    scenario_4 = Scenario("scenario_4", [task_4, task_2, task_1, task_3], {}, [], scenario_id=ScenarioId("s3"))
    assert scenario_4._is_consistent()

    # s1 ---      s6 ---> t2 ---> s5
    #       |                     |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7 ---> t6
    #                                              |
    # s8 -------> t5 -------> s9 ------------------
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, [data_node_6], [data_node_5], TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_5, data_node_4], id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_7], TaskId("t4"))
    task_5 = Task("t5", {}, print, [data_node_8], [data_node_9], TaskId("t5"))
    task_6 = Task("t6", {}, print, [data_node_7, data_node_9], id=TaskId("t6"))
    scenario_5 = Scenario("scenario_5", [task_1, task_2, task_3, task_4, task_5, task_6], {}, [], ScenarioId("s4"))
    assert scenario_5._is_consistent()

    # s1 ---
    #       |
    #       |---> t1 ---|      -----> t3
    #       |           |      |
    # s2 ---             ---> s4 ---> t4 ---> s7
    # t2 ---> s5                      |
    # s8 ---> t5                 s6 --|
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, output=[data_node_5], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_4], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4, data_node_6], [data_node_7], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_8], None, TaskId("t5"))
    scenario_6 = Scenario("scenario_6", [task_1, task_2, task_3, task_4, task_5], {}, [], ScenarioId("s5"))
    assert scenario_6._is_consistent()

    #  p1  s1 ---
    #            |
    #            |---> t1 ---|      -----> t3
    #            |           |      |
    #      s2 ---             ---> s4 ---> t4 ---> s5
    #  p2  t2 ---> s4 ---> t3
    #  p3  s6 ---> t5
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, output=[data_node_4], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_4], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_5], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_6], None, TaskId("t5"))
    scenario_7 = Scenario("scenario_7", [task_1, task_2, task_3, task_4, task_5], {}, [], ScenarioId("s6"))
    assert scenario_7._is_consistent()

    #  p1  s1 ---
    #            |
    #            |---> t1 ---|      -----> t3
    #            |           |      |
    #      s2 ---             ---> s4 ---> t4 ---> s5
    #  p2  t2 ---> s4 ---> t3
    #  p3  s6 ---> t5 ---> s4 ---> t4 ---> s5
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_4], TaskId("t1"))
    task_2 = Task("garply", {}, print, output=[data_node_4], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_4], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_4], [data_node_5], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_6], [data_node_4], None, TaskId("t5"))
    scenario_8 = Scenario("scenario_8", [task_4, task_1, task_2, task_3, task_5], {}, [], scenario_id=ScenarioId("s7"))
    assert scenario_8._is_consistent()

    #  p1  s1 ---
    #            |
    #            |---> t1 ---|      -----> t3
    #            |           |      |
    #      s2 ---             ---> s3 ---> t4 ---> s4
    #  p2  t2 ---> s3 ---> t3
    #  p3  s5 ---> t5 ---> s3 ---> t4 ---> s4
    #  p4  s3 ---> t4 ---> s4
    task_1 = Task("grault", {}, print, [data_node_1, data_node_2], [data_node_3], TaskId("t1"))
    task_2 = Task("garply", {}, print, output=[data_node_3], id=TaskId("t2"))
    task_3 = Task("waldo", {}, print, [data_node_3], None, id=TaskId("t3"))
    task_4 = Task("fred", {}, print, [data_node_3], [data_node_4], TaskId("t4"))
    task_5 = Task("bob", {}, print, [data_node_5], [data_node_3], TaskId("t5"))
    scenario_9 = Scenario("scenario_9", [task_1, task_2, task_3, task_4, task_5], {}, [], scenario_id=ScenarioId("s8"))
    assert scenario_9._is_consistent()