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"""
Test that generic animations can be disabled.
"""
from textual.app import App, ComposeResult
from textual.color import Color
from textual.widgets import Label
class SingleLabelApp(App[None]):
"""Single label whose background colour we'll animate."""
CSS = """
Label {
background: red;
}
"""
def compose(self) -> ComposeResult:
yield Label()
async def test_style_animations_via_animate_work_on_full() -> None:
app = SingleLabelApp()
app.animation_level = "full"
async with app.run_test():
label = app.query_one(Label)
# Sanity check.
assert label.styles.background == Color.parse("red")
animator = app.animator
# Freeze time at 0 before triggering the animation.
animator._get_time = lambda *_: 0
label.styles.animate("background", "blue", duration=1)
assert len(animator._animations) > 0 # Sanity check.
# Freeze time around the animation midpoint.
animator._get_time = lambda *_: 0.5
# Move to the next frame.
animator()
# The animation shouldn't have completed.
assert label.styles.background != Color.parse("red")
assert label.styles.background != Color.parse("blue")
async def test_style_animations_via_animate_are_disabled_on_basic() -> None:
app = SingleLabelApp()
app.animation_level = "basic"
async with app.run_test():
label = app.query_one(Label)
# Sanity check.
assert label.styles.background == Color.parse("red")
animator = app.animator
# Freeze time at 0 before triggering the animation.
animator._get_time = lambda *_: 0
label.styles.animate("background", "blue", duration=1)
assert len(animator._animations) > 0 # Sanity check.
# Freeze time after the animation start and before animation end.
animator._get_time = lambda *_: 0.01
# Move to the next frame.
animator()
# The animation should have completed.
assert label.styles.background == Color.parse("blue")
async def test_style_animations_via_animate_are_disabled_on_none() -> None:
app = SingleLabelApp()
app.animation_level = "none"
async with app.run_test():
label = app.query_one(Label)
# Sanity check.
assert label.styles.background == Color.parse("red")
animator = app.animator
# Freeze time at 0 before triggering the animation.
animator._get_time = lambda *_: 0
label.styles.animate("background", "blue", duration=1)
assert len(animator._animations) > 0 # Sanity check.
# Freeze time after the animation start and before animation end.
animator._get_time = lambda *_: 0.01
# Move to the next frame.
animator()
# The animation should have completed.
assert label.styles.background == Color.parse("blue")
class LabelWithTransitionsApp(App[None]):
"""Single label whose background is set to animate with TCSS."""
CSS = """
Label {
background: red;
transition: background 1s;
}
Label.blue-bg {
background: blue;
}
"""
def compose(self) -> ComposeResult:
yield Label()
async def test_style_animations_via_transition_work_on_full() -> None:
app = LabelWithTransitionsApp()
app.animation_level = "full"
async with app.run_test():
label = app.query_one(Label)
# Sanity check.
assert label.styles.background == Color.parse("red")
animator = app.animator
# Free time at 0 before triggering the animation.
animator._get_time = lambda *_: 0
label.add_class("blue-bg")
assert len(animator._animations) > 0 # Sanity check.
# Freeze time in the middle of the animation.
animator._get_time = lambda *_: 0.5
animator()
# The animation should be undergoing.
assert label.styles.background != Color.parse("red")
assert label.styles.background != Color.parse("blue")
async def test_style_animations_via_transition_are_disabled_on_basic() -> None:
app = LabelWithTransitionsApp()
app.animation_level = "basic"
async with app.run_test():
label = app.query_one(Label)
# Sanity check.
assert label.styles.background == Color.parse("red")
animator = app.animator
# Free time at 0 before triggering the animation.
animator._get_time = lambda *_: 0
label.add_class("blue-bg")
assert len(animator._animations) > 0 # Sanity check.
# Freeze time after the animation start and before animation end.
animator._get_time = lambda *_: 0.01
animator()
# The animation should have completed.
assert label.styles.background == Color.parse("blue")
async def test_style_animations_via_transition_are_disabled_on_none() -> None:
app = LabelWithTransitionsApp()
app.animation_level = "none"
async with app.run_test():
label = app.query_one(Label)
# Sanity check.
assert label.styles.background == Color.parse("red")
animator = app.animator
# Free time at 0 before triggering the animation.
animator._get_time = lambda *_: 0
label.add_class("blue-bg")
assert len(animator._animations) > 0 # Sanity check.
# Freeze time after the animation start and before animation end.
animator._get_time = lambda *_: 0.01
animator()
# The animation should have completed.
assert label.styles.background == Color.parse("blue")
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