import decimal import json import math import typing from collections.abc import Mapping, Sequence from typing import cast import pytest from pandas import DataFrame import reflex as rx from reflex.base import Base from reflex.config import PerformanceMode from reflex.constants.base import REFLEX_VAR_CLOSING_TAG, REFLEX_VAR_OPENING_TAG from reflex.state import BaseState from reflex.utils.exceptions import ( PrimitiveUnserializableToJSONError, UntypedComputedVarError, ) from reflex.utils.imports import ImportVar from reflex.vars import VarData from reflex.vars.base import ( ComputedVar, LiteralVar, Var, computed_var, var_operation, var_operation_return, ) from reflex.vars.function import ( ArgsFunctionOperation, DestructuredArg, FunctionStringVar, ) from reflex.vars.number import LiteralBooleanVar, LiteralNumberVar, NumberVar from reflex.vars.object import LiteralObjectVar, ObjectVar from reflex.vars.sequence import ( ArrayVar, ConcatVarOperation, LiteralArrayVar, LiteralStringVar, ) test_vars = [ Var(_js_expr="prop1", _var_type=int), Var(_js_expr="key", _var_type=str), Var(_js_expr="value", _var_type=str)._var_set_state("state"), Var(_js_expr="local", _var_type=str)._var_set_state("state"), Var(_js_expr="local2", _var_type=str), ] class ATestState(BaseState): """Test state.""" value: str dict_val: dict[str, list] = {} @pytest.fixture def TestObj(): class TestObj(Base): foo: int bar: str return TestObj @pytest.fixture def ParentState(TestObj): class ParentState(BaseState): foo: int bar: int @computed_var def var_without_annotation(self): return TestObj return ParentState @pytest.fixture def ChildState(ParentState, TestObj): class ChildState(ParentState): @computed_var def var_without_annotation(self): """This shadows ParentState.var_without_annotation. Returns: TestObj: Test object. """ return TestObj return ChildState @pytest.fixture def GrandChildState(ChildState, TestObj): class GrandChildState(ChildState): @computed_var def var_without_annotation(self): """This shadows ChildState.var_without_annotation. Returns: TestObj: Test object. """ return TestObj return GrandChildState @pytest.fixture def StateWithAnyVar(TestObj): class StateWithAnyVar(BaseState): @computed_var def var_without_annotation(self) -> typing.Any: return TestObj return StateWithAnyVar @pytest.fixture def StateWithCorrectVarAnnotation(): class StateWithCorrectVarAnnotation(BaseState): @computed_var def var_with_annotation(self) -> str: return "Correct annotation" return StateWithCorrectVarAnnotation @pytest.fixture def StateWithWrongVarAnnotation(TestObj): class StateWithWrongVarAnnotation(BaseState): @computed_var def var_with_annotation(self) -> str: return TestObj return StateWithWrongVarAnnotation @pytest.fixture def StateWithInitialComputedVar(): class StateWithInitialComputedVar(BaseState): @computed_var(initial_value="Initial value") def var_with_initial_value(self) -> str: return "Runtime value" return StateWithInitialComputedVar @pytest.fixture def ChildWithInitialComputedVar(StateWithInitialComputedVar): class ChildWithInitialComputedVar(StateWithInitialComputedVar): @computed_var(initial_value="Initial value") def var_with_initial_value_child(self) -> str: return "Runtime value" return ChildWithInitialComputedVar @pytest.fixture def StateWithRuntimeOnlyVar(): class StateWithRuntimeOnlyVar(BaseState): @computed_var(initial_value=None) def var_raises_at_runtime(self) -> str: raise ValueError("So nicht, mein Freund") return StateWithRuntimeOnlyVar @pytest.fixture def ChildWithRuntimeOnlyVar(StateWithRuntimeOnlyVar): class ChildWithRuntimeOnlyVar(StateWithRuntimeOnlyVar): @computed_var(initial_value="Initial value") def var_raises_at_runtime_child(self) -> str: raise ValueError("So nicht, mein Freund") return ChildWithRuntimeOnlyVar @pytest.mark.parametrize( "prop,expected", zip( test_vars, [ "prop1", "key", "state.value", "state.local", "local2", ], strict=True, ), ) def test_full_name(prop, expected): """Test that the full name of a var is correct. Args: prop: The var to test. expected: The expected full name. """ assert str(prop) == expected @pytest.mark.parametrize( "prop,expected", zip( test_vars, ["prop1", "key", "state.value", "state.local", "local2"], strict=True, ), ) def test_str(prop, expected): """Test that the string representation of a var is correct. Args: prop: The var to test. expected: The expected string representation. """ assert str(prop) == expected @pytest.mark.parametrize( ("prop", "expected"), [ (Var(_js_expr="p", _var_type=int), 0), (Var(_js_expr="p", _var_type=float), 0.0), (Var(_js_expr="p", _var_type=str), ""), (Var(_js_expr="p", _var_type=bool), False), (Var(_js_expr="p", _var_type=list), []), (Var(_js_expr="p", _var_type=dict), {}), (Var(_js_expr="p", _var_type=tuple), ()), (Var(_js_expr="p", _var_type=set), set()), ], ) def test_default_value(prop: Var, expected): """Test that the default value of a var is correct. Args: prop: The var to test. expected: The expected default value. """ assert prop._get_default_value() == expected @pytest.mark.parametrize( "prop,expected", zip( test_vars, [ "set_prop1", "set_key", "state.set_value", "state.set_local", "set_local2", ], strict=True, ), ) def test_get_setter(prop: Var, expected): """Test that the name of the setter function of a var is correct. Args: prop: The var to test. expected: The expected name of the setter function. """ assert prop._get_setter_name() == expected @pytest.mark.parametrize( "value,expected", [ (None, Var(_js_expr="null", _var_type=None)), (1, Var(_js_expr="1", _var_type=int)), ("key", Var(_js_expr='"key"', _var_type=str)), (3.14, Var(_js_expr="3.14", _var_type=float)), ([1, 2, 3], Var(_js_expr="[1, 2, 3]", _var_type=Sequence[int])), ( {"a": 1, "b": 2}, Var(_js_expr='({ ["a"] : 1, ["b"] : 2 })', _var_type=Mapping[str, int]), ), ], ) def test_create(value, expected): """Test the var create function. Args: value: The value to create a var from. expected: The expected name of the setter function. """ prop = LiteralVar.create(value) assert prop.equals(expected) def test_create_type_error(): """Test the var create function when inputs type error.""" class ErrorType: pass value = ErrorType() with pytest.raises(TypeError): LiteralVar.create(value) def v(value) -> Var: return LiteralVar.create(value) def test_basic_operations(TestObj): """Test the var operations. Args: TestObj: The test object. """ assert str(v(1) == v(2)) == "(1 === 2)" assert str(v(1) != v(2)) == "(1 !== 2)" assert str(LiteralNumberVar.create(1) < 2) == "(1 < 2)" assert str(LiteralNumberVar.create(1) <= 2) == "(1 <= 2)" assert str(LiteralNumberVar.create(1) > 2) == "(1 > 2)" assert str(LiteralNumberVar.create(1) >= 2) == "(1 >= 2)" assert str(LiteralNumberVar.create(1) + 2) == "(1 + 2)" assert str(LiteralNumberVar.create(1) - 2) == "(1 - 2)" assert str(LiteralNumberVar.create(1) * 2) == "(1 * 2)" assert str(LiteralNumberVar.create(1) / 2) == "(1 / 2)" assert str(LiteralNumberVar.create(1) // 2) == "Math.floor(1 / 2)" assert str(LiteralNumberVar.create(1) % 2) == "(1 % 2)" assert str(LiteralNumberVar.create(1) ** 2) == "(1 ** 2)" assert str(LiteralNumberVar.create(1) & v(2)) == "(1 && 2)" assert str(LiteralNumberVar.create(1) | v(2)) == "(1 || 2)" assert str(LiteralArrayVar.create([1, 2, 3])[0]) == "[1, 2, 3].at(0)" assert ( str(LiteralObjectVar.create({"a": 1, "b": 2})["a"]) == '({ ["a"] : 1, ["b"] : 2 })["a"]' ) assert str(v("foo") == v("bar")) == '("foo" === "bar")' assert str(Var(_js_expr="foo") == Var(_js_expr="bar")) == "(foo === bar)" assert ( str(LiteralVar.create("foo") == LiteralVar.create("bar")) == '("foo" === "bar")' ) print(Var(_js_expr="foo").to(ObjectVar, TestObj)._var_set_state("state")) assert ( str( Var(_js_expr="foo").to(ObjectVar, TestObj)._var_set_state("state").bar == LiteralVar.create("bar") ) == '(state.foo["bar"] === "bar")' ) assert ( str(Var(_js_expr="foo").to(ObjectVar, TestObj)._var_set_state("state").bar) == 'state.foo["bar"]' ) assert str(abs(LiteralNumberVar.create(1))) == "Math.abs(1)" assert str(LiteralArrayVar.create([1, 2, 3]).length()) == "[1, 2, 3].length" assert ( str(LiteralArrayVar.create([1, 2]) + LiteralArrayVar.create([3, 4])) == "[...[1, 2], ...[3, 4]]" ) # Tests for reverse operation assert ( str(LiteralArrayVar.create([1, 2, 3]).reverse()) == "[1, 2, 3].slice().reverse()" ) assert ( str(LiteralArrayVar.create(["1", "2", "3"]).reverse()) == '["1", "2", "3"].slice().reverse()' ) assert ( str(Var(_js_expr="foo")._var_set_state("state").to(list).reverse()) == "state.foo.slice().reverse()" ) assert str(Var(_js_expr="foo").to(list).reverse()) == "foo.slice().reverse()" assert str(Var(_js_expr="foo", _var_type=str).js_type()) == "(typeof(foo))" @pytest.mark.parametrize( "var, expected", [ (v([1, 2, 3]), "[1, 2, 3]"), (v({1, 2, 3}), "[1, 2, 3]"), (v(["1", "2", "3"]), '["1", "2", "3"]'), ( Var(_js_expr="foo")._var_set_state("state").to(list), "state.foo", ), (Var(_js_expr="foo").to(list), "foo"), (v((1, 2, 3)), "[1, 2, 3]"), (v(("1", "2", "3")), '["1", "2", "3"]'), ( Var(_js_expr="foo")._var_set_state("state").to(tuple), "state.foo", ), (Var(_js_expr="foo").to(tuple), "foo"), ], ) def test_list_tuple_contains(var, expected): assert str(var.contains(1)) == f"{expected}.includes(1)" assert str(var.contains("1")) == f'{expected}.includes("1")' assert str(var.contains(v(1))) == f"{expected}.includes(1)" assert str(var.contains(v("1"))) == f'{expected}.includes("1")' other_state_var = Var(_js_expr="other", _var_type=str)._var_set_state("state") other_var = Var(_js_expr="other", _var_type=str) assert str(var.contains(other_state_var)) == f"{expected}.includes(state.other)" assert str(var.contains(other_var)) == f"{expected}.includes(other)" class Foo(rx.Base): """Foo class.""" bar: int baz: str class Bar(rx.Base): """Bar class.""" bar: str baz: str foo: int @pytest.mark.parametrize( ("var", "var_type"), [ (Var(_js_expr="").to(Foo | Bar), Foo | Bar), (Var(_js_expr="").to(Foo | Bar).bar, int | str), (Var(_js_expr="").to(Foo | Bar), Foo | Bar), (Var(_js_expr="").to(Foo | Bar).baz, str), ( Var(_js_expr="").to(Foo | Bar).foo, int | None, ), ], ) def test_var_types(var, var_type): assert var._var_type == var_type @pytest.mark.parametrize( "var, expected", [ (v("123"), json.dumps("123")), (Var(_js_expr="foo")._var_set_state("state").to(str), "state.foo"), (Var(_js_expr="foo").to(str), "foo"), ], ) def test_str_contains(var, expected): assert str(var.contains("1")) == f'{expected}.includes("1")' assert str(var.contains(v("1"))) == f'{expected}.includes("1")' other_state_var = Var(_js_expr="other")._var_set_state("state").to(str) other_var = Var(_js_expr="other").to(str) assert str(var.contains(other_state_var)) == f"{expected}.includes(state.other)" assert str(var.contains(other_var)) == f"{expected}.includes(other)" assert ( str(var.contains("1", "hello")) == f'{expected}.some(obj => obj["hello"] === "1")' ) @pytest.mark.parametrize( "var, expected", [ (v({"a": 1, "b": 2}), '({ ["a"] : 1, ["b"] : 2 })'), (Var(_js_expr="foo")._var_set_state("state").to(dict), "state.foo"), (Var(_js_expr="foo").to(dict), "foo"), ], ) def test_dict_contains(var, expected): assert str(var.contains(1)) == f"{expected}.hasOwnProperty(1)" assert str(var.contains("1")) == f'{expected}.hasOwnProperty("1")' assert str(var.contains(v(1))) == f"{expected}.hasOwnProperty(1)" assert str(var.contains(v("1"))) == f'{expected}.hasOwnProperty("1")' other_state_var = Var(_js_expr="other")._var_set_state("state").to(str) other_var = Var(_js_expr="other").to(str) assert ( str(var.contains(other_state_var)) == f"{expected}.hasOwnProperty(state.other)" ) assert str(var.contains(other_var)) == f"{expected}.hasOwnProperty(other)" @pytest.mark.parametrize( "var", [ Var(_js_expr="list", _var_type=list[int]).guess_type(), Var(_js_expr="tuple", _var_type=tuple[int, int]).guess_type(), Var(_js_expr="str", _var_type=str).guess_type(), ], ) def test_var_indexing_lists(var): """Test that we can index into str, list or tuple vars. Args: var : The str, list or tuple base var. """ # Test basic indexing. assert str(var[0]) == f"{var._js_expr}.at(0)" assert str(var[1]) == f"{var._js_expr}.at(1)" # Test negative indexing. assert str(var[-1]) == f"{var._js_expr}.at(-1)" @pytest.mark.parametrize( "var, type_", [ (Var(_js_expr="list", _var_type=list[int]).guess_type(), [int, int]), ( Var(_js_expr="tuple", _var_type=tuple[int, str]).guess_type(), [int, str], ), (Var.create((1, 2)), [int, int]), ], ) def test_var_indexing_types(var, type_): """Test that indexing returns valid types. Args: var : The list, tuple base var. type_ : The type on indexed object. """ assert var[0]._var_type == type_[0] assert var[1]._var_type == type_[1] def test_var_indexing_str(): """Test that we can index into str vars.""" str_var = Var(_js_expr="str").to(str) # Test that indexing gives a type of Var[str]. assert isinstance(str_var[0], Var) assert str_var[0]._var_type is str # Test basic indexing. assert str(str_var[0]) == "str.at(0)" assert str(str_var[1]) == "str.at(1)" # Test negative indexing. assert str(str_var[-1]) == "str.at(-1)" @pytest.mark.parametrize( "var", [ (Var(_js_expr="foo", _var_type=int).guess_type()), (Var(_js_expr="bar", _var_type=float).guess_type()), ], ) def test_var_replace_with_invalid_kwargs(var): with pytest.raises(TypeError) as excinfo: var._replace(_this_should_fail=True) assert "unexpected keyword argument" in str(excinfo.value) def test_computed_var_replace_with_invalid_kwargs(): @computed_var(initial_value=1) def test_var(state) -> int: return 1 with pytest.raises(TypeError) as excinfo: test_var._replace(_random_kwarg=True) assert "Unexpected keyword argument" in str(excinfo.value) @pytest.mark.parametrize( "var, index", [ (Var(_js_expr="lst", _var_type=list[int]).guess_type(), [1, 2]), ( Var(_js_expr="lst", _var_type=list[int]).guess_type(), {"name": "dict"}, ), (Var(_js_expr="lst", _var_type=list[int]).guess_type(), {"set"}), ( Var(_js_expr="lst", _var_type=list[int]).guess_type(), ( 1, 2, ), ), (Var(_js_expr="lst", _var_type=list[int]).guess_type(), 1.5), (Var(_js_expr="lst", _var_type=list[int]).guess_type(), "str"), ( Var(_js_expr="lst", _var_type=list[int]).guess_type(), Var(_js_expr="string_var", _var_type=str).guess_type(), ), ( Var(_js_expr="lst", _var_type=list[int]).guess_type(), Var(_js_expr="float_var", _var_type=float).guess_type(), ), ( Var(_js_expr="lst", _var_type=list[int]).guess_type(), Var(_js_expr="list_var", _var_type=list[int]).guess_type(), ), ( Var(_js_expr="lst", _var_type=list[int]).guess_type(), Var(_js_expr="set_var", _var_type=set[str]).guess_type(), ), ( Var(_js_expr="lst", _var_type=list[int]).guess_type(), Var(_js_expr="dict_var", _var_type=dict[str, str]).guess_type(), ), (Var(_js_expr="str", _var_type=str).guess_type(), [1, 2]), (Var(_js_expr="lst", _var_type=str).guess_type(), {"name": "dict"}), (Var(_js_expr="lst", _var_type=str).guess_type(), {"set"}), ( Var(_js_expr="lst", _var_type=str).guess_type(), Var(_js_expr="string_var", _var_type=str).guess_type(), ), ( Var(_js_expr="lst", _var_type=str).guess_type(), Var(_js_expr="float_var", _var_type=float).guess_type(), ), (Var(_js_expr="str", _var_type=tuple[str]).guess_type(), [1, 2]), ( Var(_js_expr="lst", _var_type=tuple[str]).guess_type(), {"name": "dict"}, ), (Var(_js_expr="lst", _var_type=tuple[str]).guess_type(), {"set"}), ( Var(_js_expr="lst", _var_type=tuple[str]).guess_type(), Var(_js_expr="string_var", _var_type=str).guess_type(), ), ( Var(_js_expr="lst", _var_type=tuple[str]).guess_type(), Var(_js_expr="float_var", _var_type=float).guess_type(), ), ], ) def test_var_unsupported_indexing_lists(var, index): """Test unsupported indexing throws a type error. Args: var: The base var. index: The base var index. """ with pytest.raises(TypeError): var[index] @pytest.mark.parametrize( "var", [ Var(_js_expr="lst", _var_type=list[int]).guess_type(), Var(_js_expr="tuple", _var_type=tuple[int, int]).guess_type(), ], ) def test_var_list_slicing(var): """Test that we can slice into str, list or tuple vars. Args: var : The str, list or tuple base var. """ assert str(var[:1]) == f"{var._js_expr}.slice(undefined, 1)" assert str(var[1:]) == f"{var._js_expr}.slice(1, undefined)" assert str(var[:]) == f"{var._js_expr}.slice(undefined, undefined)" def test_str_var_slicing(): """Test that we can slice into str vars.""" str_var = Var(_js_expr="str").to(str) # Test that slicing gives a type of Var[str]. assert isinstance(str_var[:1], Var) assert str_var[:1]._var_type is str # Test basic slicing. assert str(str_var[:1]) == 'str.split("").slice(undefined, 1).join("")' assert str(str_var[1:]) == 'str.split("").slice(1, undefined).join("")' assert str(str_var[:]) == 'str.split("").slice(undefined, undefined).join("")' assert str(str_var[1:2]) == 'str.split("").slice(1, 2).join("")' # Test negative slicing. assert str(str_var[:-1]) == 'str.split("").slice(undefined, -1).join("")' assert str(str_var[-1:]) == 'str.split("").slice(-1, undefined).join("")' assert str(str_var[:-2]) == 'str.split("").slice(undefined, -2).join("")' assert str(str_var[-2:]) == 'str.split("").slice(-2, undefined).join("")' def test_dict_indexing(): """Test that we can index into dict vars.""" dct = Var(_js_expr="dct").to(ObjectVar, dict[str, str]) # Check correct indexing. assert str(dct["a"]) == 'dct["a"]' assert str(dct["asdf"]) == 'dct["asdf"]' @pytest.mark.parametrize( "var, index", [ ( Var(_js_expr="dict", _var_type=dict[str, str]).guess_type(), [1, 2], ), ( Var(_js_expr="dict", _var_type=dict[str, str]).guess_type(), {"name": "dict"}, ), ( Var(_js_expr="dict", _var_type=dict[str, str]).guess_type(), {"set"}, ), ( Var(_js_expr="dict", _var_type=dict[str, str]).guess_type(), ( 1, 2, ), ), ( Var(_js_expr="lst", _var_type=dict[str, str]).guess_type(), Var(_js_expr="list_var", _var_type=list[int]).guess_type(), ), ( Var(_js_expr="lst", _var_type=dict[str, str]).guess_type(), Var(_js_expr="set_var", _var_type=set[str]).guess_type(), ), ( Var(_js_expr="lst", _var_type=dict[str, str]).guess_type(), Var(_js_expr="dict_var", _var_type=dict[str, str]).guess_type(), ), ( Var(_js_expr="df", _var_type=DataFrame).guess_type(), [1, 2], ), ( Var(_js_expr="df", _var_type=DataFrame).guess_type(), {"name": "dict"}, ), ( Var(_js_expr="df", _var_type=DataFrame).guess_type(), {"set"}, ), ( Var(_js_expr="df", _var_type=DataFrame).guess_type(), ( 1, 2, ), ), ( Var(_js_expr="df", _var_type=DataFrame).guess_type(), Var(_js_expr="list_var", _var_type=list[int]).guess_type(), ), ( Var(_js_expr="df", _var_type=DataFrame).guess_type(), Var(_js_expr="set_var", _var_type=set[str]).guess_type(), ), ( Var(_js_expr="df", _var_type=DataFrame).guess_type(), Var(_js_expr="dict_var", _var_type=dict[str, str]).guess_type(), ), ], ) def test_var_unsupported_indexing_dicts(var, index): """Test unsupported indexing throws a type error. Args: var: The base var. index: The base var index. """ with pytest.raises(TypeError): var[index] @pytest.mark.parametrize( "fixture", [ "ParentState", "StateWithAnyVar", ], ) def test_computed_var_without_annotation_error(request, fixture): """Test that a type error is thrown when an attribute of a computed var is accessed without annotating the computed var. Args: request: Fixture Request. fixture: The state fixture. """ with pytest.raises(TypeError) as err: state = request.getfixturevalue(fixture) state.var_without_annotation.foo full_name = state.var_without_annotation._var_full_name assert ( err.value.args[0] == f"You must provide an annotation for the state var `{full_name}`. Annotation cannot be `typing.Any`" ) @pytest.mark.parametrize( "fixture", [ "ChildState", "GrandChildState", ], ) def test_shadow_computed_var_error(request: pytest.FixtureRequest, fixture: str): """Test that a name error is thrown when an attribute of a computed var is shadowed by another attribute. Args: request: Fixture Request. fixture: The state fixture. """ with pytest.raises(UntypedComputedVarError): state = request.getfixturevalue(fixture) state.var_without_annotation.foo @pytest.mark.parametrize( "fixture", [ "StateWithCorrectVarAnnotation", "StateWithWrongVarAnnotation", ], ) def test_computed_var_with_annotation_error(request, fixture): """Test that an Attribute error is thrown when a non-existent attribute of an annotated computed var is accessed or when the wrong annotation is provided to a computed var. Args: request: Fixture Request. fixture: The state fixture. """ with pytest.raises(AttributeError) as err: state = request.getfixturevalue(fixture) state.var_with_annotation.foo full_name = state.var_with_annotation._var_full_name assert ( err.value.args[0] == f"The State var `{full_name}` has no attribute 'foo' or may have been annotated wrongly." ) @pytest.mark.parametrize( "fixture,var_name,expected_initial,expected_runtime,raises_at_runtime", [ ( "StateWithInitialComputedVar", "var_with_initial_value", "Initial value", "Runtime value", False, ), ( "ChildWithInitialComputedVar", "var_with_initial_value_child", "Initial value", "Runtime value", False, ), ( "StateWithRuntimeOnlyVar", "var_raises_at_runtime", None, None, True, ), ( "ChildWithRuntimeOnlyVar", "var_raises_at_runtime_child", "Initial value", None, True, ), ], ) def test_state_with_initial_computed_var( request, fixture, var_name, expected_initial, expected_runtime, raises_at_runtime ): """Test that the initial and runtime values of a computed var are correct. Args: request: Fixture Request. fixture: The state fixture. var_name: The name of the computed var. expected_initial: The expected initial value of the computed var. expected_runtime: The expected runtime value of the computed var. raises_at_runtime: Whether the computed var is runtime only. """ state = request.getfixturevalue(fixture)() state_name = state.get_full_name() initial_dict = state.dict(initial=True)[state_name] assert initial_dict[var_name] == expected_initial if raises_at_runtime: with pytest.raises(ValueError): state.dict()[state_name][var_name] else: runtime_dict = state.dict()[state_name] assert runtime_dict[var_name] == expected_runtime def test_literal_var(): complicated_var = LiteralVar.create( [ {"a": 1, "b": 2, "c": {"d": 3, "e": 4}}, [1, 2, 3, 4], 9, "string", True, False, None, {1, 2, 3}, ] ) assert ( str(complicated_var) == '[({ ["a"] : 1, ["b"] : 2, ["c"] : ({ ["d"] : 3, ["e"] : 4 }) }), [1, 2, 3, 4], 9, "string", true, false, null, [1, 2, 3]]' ) def test_function_var(): addition_func = FunctionStringVar.create("((a, b) => a + b)") assert str(addition_func.call(1, 2)) == "(((a, b) => a + b)(1, 2))" manual_addition_func = ArgsFunctionOperation.create( ("a", "b"), { "args": [Var(_js_expr="a"), Var(_js_expr="b")], "result": Var(_js_expr="a + b"), }, ) assert ( str(manual_addition_func.call(1, 2)) == '(((a, b) => ({ ["args"] : [a, b], ["result"] : a + b }))(1, 2))' ) increment_func = addition_func.partial(1) assert ( str(increment_func.call(2)) == "(((...args) => (((a, b) => a + b)(1, ...args)))(2))" ) create_hello_statement = ArgsFunctionOperation.create( ("name",), f"Hello, {Var(_js_expr='name')}!" ) first_name = LiteralStringVar.create("Steven") last_name = LiteralStringVar.create("Universe") assert ( str(create_hello_statement.call(f"{first_name} {last_name}")) == '(((name) => ("Hello, "+name+"!"))("Steven Universe"))' ) # Test with destructured arguments destructured_func = ArgsFunctionOperation.create( (DestructuredArg(fields=("a", "b")),), Var(_js_expr="a + b"), ) assert ( str(destructured_func.call({"a": 1, "b": 2})) == '((({a, b}) => a + b)(({ ["a"] : 1, ["b"] : 2 })))' ) # Test with explicit return explicit_return_func = ArgsFunctionOperation.create( ("a", "b"), Var(_js_expr="return a + b"), explicit_return=True ) assert str(explicit_return_func.call(1, 2)) == "(((a, b) => {return a + b})(1, 2))" def test_var_operation(): @var_operation def add(a: NumberVar | int, b: NumberVar | int): return var_operation_return(js_expression=f"({a} + {b})", var_type=int) assert str(add(1, 2)) == "(1 + 2)" assert str(add(a=4, b=-9)) == "(4 + -9)" five = LiteralNumberVar.create(5) seven = add(2, five) assert isinstance(seven, NumberVar) def test_string_operations(): basic_string = LiteralStringVar.create("Hello, World!") assert str(basic_string.length()) == '"Hello, World!".split("").length' assert str(basic_string.lower()) == '"Hello, World!".toLowerCase()' assert str(basic_string.upper()) == '"Hello, World!".toUpperCase()' assert str(basic_string.strip()) == '"Hello, World!".trim()' assert str(basic_string.contains("World")) == '"Hello, World!".includes("World")' assert ( str(basic_string.split(" ").join(",")) == '"Hello, World!".split(" ").join(",")' ) def test_all_number_operations(): starting_number = LiteralNumberVar.create(-5.4) complicated_number = (((-(starting_number + 1)) * 2 / 3) // 2 % 3) ** 2 assert ( str(complicated_number) == "((Math.floor(((-((-5.4 + 1)) * 2) / 3) / 2) % 3) ** 2)" ) even_more_complicated_number = ~( abs(math.floor(complicated_number)) | 2 & 3 & round(complicated_number) ) assert ( str(even_more_complicated_number) == "!(isTrue((Math.abs(Math.floor(((Math.floor(((-((-5.4 + 1)) * 2) / 3) / 2) % 3) ** 2))) || (2 && Math.round(((Math.floor(((-((-5.4 + 1)) * 2) / 3) / 2) % 3) ** 2))))))" ) assert str(LiteralNumberVar.create(5) > False) == "(5 > 0)" assert str(LiteralBooleanVar.create(False) < 5) == "(Number(false) < 5)" assert ( str(LiteralBooleanVar.create(False) < LiteralBooleanVar.create(True)) == "(Number(false) < Number(true))" ) @pytest.mark.parametrize( ("var", "expected"), [ (Var.create(False), "false"), (Var.create(True), "true"), (Var.create("false"), 'isTrue("false")'), (Var.create([1, 2, 3]), "isTrue([1, 2, 3])"), (Var.create({"a": 1, "b": 2}), 'isTrue(({ ["a"] : 1, ["b"] : 2 }))'), (Var("mysterious_var"), "isTrue(mysterious_var)"), ], ) def test_boolify_operations(var, expected): assert str(var.bool()) == expected def test_index_operation(): array_var = LiteralArrayVar.create([1, 2, 3, 4, 5]) assert str(array_var[0]) == "[1, 2, 3, 4, 5].at(0)" assert str(array_var[1:2]) == "[1, 2, 3, 4, 5].slice(1, 2)" assert ( str(array_var[1:4:2]) == "[1, 2, 3, 4, 5].slice(1, 4).filter((_, i) => i % 2 === 0)" ) assert ( str(array_var[::-1]) == "[1, 2, 3, 4, 5].slice(0, [1, 2, 3, 4, 5].length).slice().reverse().slice(undefined, undefined).filter((_, i) => i % 1 === 0)" ) assert str(array_var.reverse()) == "[1, 2, 3, 4, 5].slice().reverse()" assert str(array_var[0].to(NumberVar) + 9) == "([1, 2, 3, 4, 5].at(0) + 9)" @pytest.mark.parametrize( "var, expected_js", [ (Var.create(float("inf")), "Infinity"), (Var.create(-float("inf")), "-Infinity"), (Var.create(float("nan")), "NaN"), ], ) def test_inf_and_nan(var, expected_js): assert str(var) == expected_js assert isinstance(var, NumberVar) assert isinstance(var, LiteralVar) with pytest.raises(PrimitiveUnserializableToJSONError): var.json() def test_array_operations(): array_var = LiteralArrayVar.create([1, 2, 3, 4, 5]) assert str(array_var.length()) == "[1, 2, 3, 4, 5].length" assert str(array_var.contains(3)) == "[1, 2, 3, 4, 5].includes(3)" assert str(array_var.reverse()) == "[1, 2, 3, 4, 5].slice().reverse()" assert ( str(ArrayVar.range(10)) == "Array.from({ length: Math.ceil((10 - 0) / 1) }, (_, i) => 0 + i * 1)" ) assert ( str(ArrayVar.range(1, 10)) == "Array.from({ length: Math.ceil((10 - 1) / 1) }, (_, i) => 1 + i * 1)" ) assert ( str(ArrayVar.range(1, 10, 2)) == "Array.from({ length: Math.ceil((10 - 1) / 2) }, (_, i) => 1 + i * 2)" ) assert ( str(ArrayVar.range(1, 10, -1)) == "Array.from({ length: Math.ceil((10 - 1) / -1) }, (_, i) => 1 + i * -1)" ) def test_object_operations(): object_var = LiteralObjectVar.create({"a": 1, "b": 2, "c": 3}) assert ( str(object_var.keys()) == 'Object.keys(({ ["a"] : 1, ["b"] : 2, ["c"] : 3 }))' ) assert ( str(object_var.values()) == 'Object.values(({ ["a"] : 1, ["b"] : 2, ["c"] : 3 }))' ) assert ( str(object_var.entries()) == 'Object.entries(({ ["a"] : 1, ["b"] : 2, ["c"] : 3 }))' ) assert str(object_var.a) == '({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })["a"]' assert str(object_var["a"]) == '({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })["a"]' assert ( str(object_var.merge(LiteralObjectVar.create({"c": 4, "d": 5}))) == '({...({ ["a"] : 1, ["b"] : 2, ["c"] : 3 }), ...({ ["c"] : 4, ["d"] : 5 })})' ) def test_var_component(): class ComponentVarState(rx.State): field_var: rx.Field[rx.Component] = rx.field(rx.text("I am a field var")) @rx.var def computed_var(self) -> rx.Component: return rx.text("I am a computed var") def has_eval_react_component(var: Var): var_data = var._get_all_var_data() assert var_data is not None assert any( any( imported_object.name == "evalReactComponent" for imported_object in imported_objects ) for _, imported_objects in var_data.imports ) has_eval_react_component(ComponentVarState.field_var) has_eval_react_component(ComponentVarState.computed_var) def test_type_chains(): object_var = LiteralObjectVar.create({"a": 1, "b": 2, "c": 3}) assert (object_var._key_type(), object_var._value_type()) == (str, int) assert (object_var.keys()._var_type, object_var.values()._var_type) == ( list[str], list[int], ) assert ( str(object_var.keys()[0].upper()) == 'Object.keys(({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })).at(0).toUpperCase()' ) assert ( str(object_var.entries()[1][1] - 1) == '(Object.entries(({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })).at(1).at(1) - 1)' ) assert ( str(object_var["c"] + object_var["b"]) # pyright: ignore [reportCallIssue, reportOperatorIssue] == '(({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })["c"] + ({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })["b"])' ) def test_nested_dict(): arr = LiteralArrayVar.create([{"bar": ["foo", "bar"]}], list[dict[str, list[str]]]) assert ( str(arr[0]["bar"][0]) == '[({ ["bar"] : ["foo", "bar"] })].at(0)["bar"].at(0)' # pyright: ignore [reportIndexIssue] ) def nested_base(): class Boo(Base): foo: str bar: int class Foo(Base): bar: Boo baz: int parent_obj = LiteralObjectVar.create( Foo(bar=Boo(foo="bar", bar=5), baz=5).dict(), Foo ) assert ( str(parent_obj.bar.foo) == '({ ["bar"] : ({ ["foo"] : "bar", ["bar"] : 5 }), ["baz"] : 5 })["bar"]["foo"]' ) def test_retrival(): var_without_data = Var(_js_expr="test") assert var_without_data is not None original_var_data = VarData( state="Test", imports={"react": [ImportVar(tag="useRef")]}, hooks={"const state = useContext(StateContexts.state)": None}, ) var_with_data = var_without_data._replace(merge_var_data=original_var_data) f_string = f"foo{var_with_data}bar" assert REFLEX_VAR_OPENING_TAG in f_string assert REFLEX_VAR_CLOSING_TAG in f_string result_var_data = LiteralVar.create(f_string)._get_all_var_data() result_immutable_var_data = Var(_js_expr=f_string)._var_data assert result_var_data is not None and result_immutable_var_data is not None assert ( result_var_data.state == result_immutable_var_data.state == original_var_data.state ) assert ( result_var_data.imports == result_immutable_var_data.imports == original_var_data.imports ) assert ( tuple(result_var_data.hooks) == tuple(result_immutable_var_data.hooks) == tuple(original_var_data.hooks) ) def test_fstring_concat(): original_var_with_data = LiteralVar.create( "imagination", _var_data=VarData(state="fear") ) immutable_var_with_data = Var( _js_expr="consequences", _var_data=VarData( imports={ "react": [ImportVar(tag="useRef")], "utils": [ImportVar(tag="useEffect")], } ), ) f_string = f"foo{original_var_with_data}bar{immutable_var_with_data}baz" string_concat = LiteralStringVar.create( f_string, _var_data=VarData( hooks={"const state = useContext(StateContexts.state)": None} ), ) assert str(string_concat) == '("fooimaginationbar"+consequences+"baz")' assert isinstance(string_concat, ConcatVarOperation) assert string_concat._get_all_var_data() == VarData( state="fear", imports={ "react": [ImportVar(tag="useRef")], "utils": [ImportVar(tag="useEffect")], }, hooks={"const state = useContext(StateContexts.state)": None}, ) var = Var(_js_expr="var", _var_type=str) myvar = Var(_js_expr="myvar", _var_type=int)._var_set_state("state") x = Var(_js_expr="x", _var_type=str) @pytest.mark.parametrize( "out, expected", [ (f"{var}", f"{hash(var)}var"), ( f"testing f-string with {myvar}", f"testing f-string with {hash(myvar)}state.myvar", ), ( f"testing local f-string {x}", f"testing local f-string {hash(x)}x", ), ], ) def test_fstrings(out, expected): assert out == expected @pytest.mark.parametrize( ("value", "expect_state"), [ ([1], ""), ({"a": 1}, ""), ([LiteralVar.create(1)._var_set_state("foo")], "foo"), ({"a": LiteralVar.create(1)._var_set_state("foo")}, "foo"), ], ) def test_extract_state_from_container(value, expect_state): """Test that _var_state is extracted from containers containing BaseVar. Args: value: The value to create a var from. expect_state: The expected state. """ var_data = LiteralVar.create(value)._get_all_var_data() var_state = var_data.state if var_data else "" assert var_state == expect_state @pytest.mark.parametrize( "value", [ "var", "\nvar", ], ) def test_fstring_roundtrip(value): """Test that f-string roundtrip carries state. Args: value: The value to create a Var from. """ var = Var(_js_expr=value)._var_set_state("state") rt_var = LiteralVar.create(f"{var}") assert var._var_state == rt_var._var_state assert str(rt_var) == str(var) @pytest.mark.parametrize( "var", [ Var(_js_expr="var", _var_type=int).guess_type(), Var(_js_expr="var", _var_type=float).guess_type(), Var(_js_expr="var", _var_type=str).guess_type(), Var(_js_expr="var", _var_type=bool).guess_type(), Var(_js_expr="var", _var_type=None).guess_type(), ], ) def test_unsupported_types_for_reverse(var): """Test that unsupported types for reverse throw a type error. Args: var: The base var. """ with pytest.raises(TypeError) as err: var.reverse() assert err.value.args[0] == "Cannot reverse non-list var." @pytest.mark.parametrize( "var", [ Var(_js_expr="var", _var_type=int).guess_type(), Var(_js_expr="var", _var_type=float).guess_type(), Var(_js_expr="var", _var_type=bool).guess_type(), Var(_js_expr="var", _var_type=type(None)).guess_type(), ], ) def test_unsupported_types_for_contains(var: Var): """Test that unsupported types for contains throw a type error. Args: var: The base var. """ with pytest.raises(TypeError) as err: assert var.contains(1) # pyright: ignore [reportAttributeAccessIssue] assert ( err.value.args[0] == f"Var of type {var._var_type} does not support contains check." ) @pytest.mark.parametrize( "other", [ Var(_js_expr="other", _var_type=int).guess_type(), Var(_js_expr="other", _var_type=float).guess_type(), Var(_js_expr="other", _var_type=bool).guess_type(), Var(_js_expr="other", _var_type=list).guess_type(), Var(_js_expr="other", _var_type=dict).guess_type(), Var(_js_expr="other", _var_type=tuple).guess_type(), Var(_js_expr="other", _var_type=set).guess_type(), ], ) def test_unsupported_types_for_string_contains(other): with pytest.raises(TypeError) as err: assert Var(_js_expr="var").to(str).contains(other) assert ( err.value.args[0] == f"Unsupported Operand type(s) for contains: StringCastedVar, {type(other).__name__}" ) def test_unsupported_default_contains(): with pytest.raises(TypeError) as err: assert 1 in Var(_js_expr="var", _var_type=str).guess_type() # pyright: ignore [reportOperatorIssue] assert ( err.value.args[0] == "'in' operator not supported for Var types, use Var.contains() instead." ) @pytest.mark.parametrize( "operand1_var,operand2_var,operators", [ ( LiteralVar.create(10), LiteralVar.create(5), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "|", "&", ], ), ( LiteralVar.create(10.5), LiteralVar.create(5), ["+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">="], ), ( LiteralVar.create(5), LiteralVar.create(True), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "|", "&", ], ), ( LiteralVar.create(10.5), LiteralVar.create(5.5), ["+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">="], ), ( LiteralVar.create(10.5), LiteralVar.create(True), ["+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">="], ), (LiteralVar.create("10"), LiteralVar.create("5"), ["+", ">", "<", "<=", ">="]), ( LiteralVar.create([10, 20]), LiteralVar.create([5, 6]), ["+", ">", "<", "<=", ">="], ), (LiteralVar.create([10, 20]), LiteralVar.create(5), ["*"]), (LiteralVar.create([10, 20]), LiteralVar.create(True), ["*"]), ( LiteralVar.create(True), LiteralVar.create(True), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "|", "&", ], ), ], ) def test_valid_var_operations(operand1_var: Var, operand2_var, operators: list[str]): """Test that operations do not raise a TypeError. Args: operand1_var: left operand. operand2_var: right operand. operators: list of supported operators. """ for operator in operators: print( "testing", operator, "on", operand1_var, operand2_var, " of types", type(operand1_var), type(operand2_var), ) eval(f"operand1_var {operator} operand2_var") eval(f"operand2_var {operator} operand1_var") @pytest.mark.parametrize( "operand1_var,operand2_var,operators", [ ( LiteralVar.create(10), LiteralVar.create(5), [ "^", "<<", ">>", ], ), ( LiteralVar.create(10.5), LiteralVar.create(5), [ "^", "<<", ">>", ], ), ( LiteralVar.create(10.5), LiteralVar.create(True), [ "^", "<<", ">>", ], ), ( LiteralVar.create(10.5), LiteralVar.create(5.5), [ "^", "<<", ">>", ], ), ( LiteralVar.create("10"), LiteralVar.create("5"), [ "-", "/", "//", "*", "%", "**", "^", "<<", ">>", ], ), ( LiteralVar.create([10, 20]), LiteralVar.create([5, 6]), [ "-", "/", "//", "*", "%", "**", "^", "<<", ">>", ], ), ( LiteralVar.create([10, 20]), LiteralVar.create(5), [ "+", "-", "/", "//", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create([10, 20]), LiteralVar.create(True), [ "+", "-", "/", "//", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create([10, 20]), LiteralVar.create("5"), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create([10, 20]), LiteralVar.create({"key": "value"}), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create([10, 20]), LiteralVar.create(5.5), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create({"key": "value"}), LiteralVar.create({"another_key": "another_value"}), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create({"key": "value"}), LiteralVar.create(5), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create({"key": "value"}), LiteralVar.create(True), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create({"key": "value"}), LiteralVar.create(5.5), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ( LiteralVar.create({"key": "value"}), LiteralVar.create("5"), [ "+", "-", "/", "//", "*", "%", "**", ">", "<", "<=", ">=", "^", "<<", ">>", ], ), ], ) def test_invalid_var_operations(operand1_var: Var, operand2_var, operators: list[str]): for operator in operators: print(f"testing {operator} on {operand1_var!s} and {operand2_var!s}") with pytest.raises(TypeError): print(eval(f"operand1_var {operator} operand2_var")) with pytest.raises(TypeError): print(eval(f"operand2_var {operator} operand1_var")) @pytest.mark.parametrize( "var, expected", [ (LiteralVar.create("string_value"), '"string_value"'), (LiteralVar.create(1), "1"), (LiteralVar.create([1, 2, 3]), "[1, 2, 3]"), (LiteralVar.create({"foo": "bar"}), '({ ["foo"] : "bar" })'), ( LiteralVar.create(ATestState.value), f"{ATestState.get_full_name()}.value", ), ( LiteralVar.create(f"{ATestState.value} string"), f'({ATestState.get_full_name()}.value+" string")', ), ( LiteralVar.create(ATestState.dict_val), f"{ATestState.get_full_name()}.dict_val", ), ], ) def test_var_name_unwrapped(var, expected): assert str(var) == expected def cv_fget(state: BaseState) -> int: return 1 @pytest.mark.parametrize( "deps,expected", [ (["a"], {None: {"a"}}), (["b"], {None: {"b"}}), ([ComputedVar(fget=cv_fget)], {None: {"cv_fget"}}), ], ) def test_computed_var_deps(deps: list[str | Var], expected: set[str]): @computed_var(deps=deps) def test_var(state) -> int: return 1 assert test_var._static_deps == expected @pytest.mark.parametrize( "deps", [ [""], [1], ["", "abc"], ], ) def test_invalid_computed_var_deps(deps: list): with pytest.raises(TypeError): @computed_var(deps=deps) def test_var(state) -> int: return 1 def test_to_string_operation(): class Email(str): ... class TestState(BaseState): optional_email: Email | None = None email: Email = Email("test@reflex.dev") assert ( str(TestState.optional_email) == f"{TestState.get_full_name()}.optional_email" ) my_state = TestState() assert my_state.optional_email is None assert my_state.email == "test@reflex.dev" assert cast(Var, TestState.email)._var_type == Email assert cast(Var, TestState.optional_email)._var_type == Email | None single_var = Var.create(Email()) assert single_var._var_type == Email @pytest.mark.asyncio async def test_async_computed_var(): side_effect_counter = 0 class AsyncComputedVarState(BaseState): v: int = 1 @computed_var(cache=True) async def async_computed_var(self) -> int: nonlocal side_effect_counter side_effect_counter += 1 return self.v + 1 my_state = AsyncComputedVarState() assert await my_state.async_computed_var == 2 assert await my_state.async_computed_var == 2 my_state.v = 2 assert await my_state.async_computed_var == 3 assert await my_state.async_computed_var == 3 assert side_effect_counter == 2 def test_var_data_hooks(): var_data_str = VarData(hooks="what") var_data_list = VarData(hooks=["what"]) var_data_dict = VarData(hooks={"what": None}) assert var_data_str == var_data_list == var_data_dict var_data_list_multiple = VarData(hooks=["what", "whot"]) var_data_dict_multiple = VarData(hooks={"what": None, "whot": None}) assert var_data_list_multiple == var_data_dict_multiple def test_var_data_with_hooks_value(): var_data = VarData(hooks={"what": VarData(hooks={"whot": VarData(hooks="whott")})}) assert var_data == VarData(hooks=["whott", "whot", "what"]) def test_str_var_in_components(mocker): class StateWithVar(rx.State): field: int = 1 mocker.patch( "reflex.components.base.bare.get_performance_mode", return_value=PerformanceMode.RAISE, ) with pytest.raises(ValueError): rx.vstack( str(StateWithVar.field), ) mocker.patch( "reflex.components.base.bare.get_performance_mode", return_value=PerformanceMode.OFF, ) rx.vstack( str(StateWithVar.field), ) def test_decimal_number_operations(): """Test that decimal.Decimal values work with NumberVar operations.""" dec_num = Var.create(decimal.Decimal("123.456")) assert isinstance(dec_num._var_value, decimal.Decimal) assert str(dec_num) == "123.456" result = dec_num + 10 assert str(result) == "(123.456 + 10)" result = dec_num * 2 assert str(result) == "(123.456 * 2)" result = dec_num / 2 assert str(result) == "(123.456 / 2)" result = dec_num > 100 assert str(result) == "(123.456 > 100)" result = dec_num < 200 assert str(result) == "(123.456 < 200)" assert dec_num.json() == "123.456" def test_decimal_var_type_compatibility(): """Test that decimal.Decimal values are compatible with NumberVar type system.""" dec_num = Var.create(decimal.Decimal("123.456")) int_num = Var.create(42) float_num = Var.create(3.14) result = dec_num + int_num assert str(result) == "(123.456 + 42)" result = dec_num * float_num assert str(result) == "(123.456 * 3.14)" result = (dec_num + int_num) / float_num assert str(result) == "((123.456 + 42) / 3.14)"