nicegui/tests/test_add_html.py

from nicegui import ui
from nicegui.testing import Screen


def test_add_head_html(screen: Screen) -> None:
    ui.add_head_html(r'<style>.my-label {background: rgb(0, 0, 255)}</style>')
    ui.label('Label').classes('my-label')
    ui.button('Green', on_click=lambda: ui.add_head_html(r'<style>.my-label {background: rgb(0, 255, 0)}</style>'))

    screen.open('/')
    assert screen.find('Label').value_of_css_property('background-color') == 'rgba(0, 0, 255, 1)'

    screen.click('Green')
    screen.wait(0.5)
    assert screen.find('Label').value_of_css_property('background-color') == 'rgba(0, 255, 0, 1)'


def test_css(screen: Screen):
    ui.add_css('''
        .red {
            color: red;
        }
    ''')
    ui.label('This is red with CSS.').classes('red')

    screen.open('/')
    assert screen.find('This is red with CSS.').value_of_css_property('color') == 'rgba(255, 0, 0, 1)'


def test_scss(screen: Screen):
    ui.add_scss('''
        .green {
            background-color: lightgreen;
            .blue {
                color: blue;
            }
        }
    ''')
    with ui.element().classes('green'):
        ui.label('This is blue on green with SCSS.').classes('blue')

    screen.open('/')
    assert screen.find('This is blue on green with SCSS.').value_of_css_property('color') == 'rgba(0, 0, 255, 1)'


def test_sass(screen: Screen):
    ui.add_sass('''
        .yellow
            background-color: yellow
            .purple
                color: purple
    ''')
    with ui.element().classes('yellow'):
        ui.label('This is purple on yellow with SASS.').classes('purple')

    screen.open('/')
    assert screen.find('This is purple on yellow with SASS.').value_of_css_property('color') == 'rgba(128, 0, 128, 1)'