nicegui/tests/test_plotly.py

import numpy as np
import plotly.graph_objects as go

from nicegui import ui

from .screen import Screen


def test_plotly(screen: Screen):
    fig = go.Figure(go.Scatter(x=[1, 2, 3], y=[1, 2, 3], name='Trace 1'))
    fig.update_layout(title='Test Figure')
    plot = ui.plotly(fig)

    ui.button('Add trace', on_click=lambda: (
        # test NumPy array support for value arrays
        fig.add_trace(go.Scatter(x=np.array([0, 1, 2]), y=np.array([2, 1, 0]), name='Trace 2')),
        plot.update()
    ))

    screen.open('/')
    screen.should_contain('Test Figure')

    screen.click('Add trace')
    screen.should_contain('Trace 1')
    screen.should_contain('Trace 2')


def test_replace_plotly(screen: Screen):
    with ui.row() as container:
        ui.plotly(go.Figure(go.Scatter(x=[1], y=[1], text=['A'], mode='text')))

    def replace():
        container.clear()
        with container:
            ui.plotly(go.Figure(go.Scatter(x=[1], y=[1], text=['B'], mode='text')))
    ui.button('Replace', on_click=replace)

    screen.open('/')
    assert screen.find_by_tag('text').text == 'A'
    screen.click('Replace')
    screen.wait(0.5)
    assert screen.find_by_tag('text').text == 'B'


def test_create_dynamically(screen: Screen):
    ui.button('Create', on_click=lambda: ui.plotly(go.Figure(go.Scatter(x=[], y=[]))))

    screen.open('/')
    screen.click('Create')
    assert screen.find_by_tag('svg')