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Add bidirectional color mode change detection (issue #1275) (#1299)

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Extract _has_color_mode_changed() function that checks original attributes
BEFORE conversion, enabling detection of all mode switches:
- color_temp → RGB ✓
- color_temp → XY ✓
- RGB → color_temp ✓
- RGB → XY ✓
- XY → color_temp ✓
- XY → RGB ✓

This improves on PR #1282 by detecting mode changes in both directions.
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Bas Nijholt 2025-11-27 10:02:50 -08:00 • committed by GitHub
commit 4feaf2c291
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2 changed files with 180 additions and 32 deletions
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125
tests/test_switch.py
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@ -1010,26 +1010,36 @@ def test_attributes_have_changed():
new_attributes=attrs,
**kwargs,
)
_LOGGER.debug("Test switch from color_temp to rgb_color")
assert not _attributes_have_changed(
# Test color mode switches - feature added to detect external changes
# (e.g., when Hue scenes change light from color_temp to RGB mode)
# See: https://github.com/basnijholt/adaptive-lighting/issues/1275
#
# All mode switches are now detected bidirectionally by checking original
# attributes BEFORE conversion in _has_color_mode_changed().
_LOGGER.debug(
"Test switch from color_temp to rgb_color - should detect mode change",
)
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 1, ATTR_COLOR_TEMP_KELVIN: 2702},
new_attributes={ATTR_BRIGHTNESS: 1, ATTR_RGB_COLOR: (255, 166, 87)},
**kwargs,
)
_LOGGER.debug("Test switch from rgb_color to color_temp")
assert not _attributes_have_changed(
_LOGGER.debug(
"Test switch from rgb_color to color_temp - should detect mode change",
)
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 1, ATTR_RGB_COLOR: (255, 166, 87)},
new_attributes={ATTR_BRIGHTNESS: 1, ATTR_COLOR_TEMP_KELVIN: 2702},
**kwargs,
)
_LOGGER.debug("Test switch from color_temp to color_xy")
assert not _attributes_have_changed(
_LOGGER.debug("Test switch from color_temp to color_xy - should detect mode change")
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 1, ATTR_COLOR_TEMP_KELVIN: 2702},
new_attributes={ATTR_BRIGHTNESS: 1, ATTR_XY_COLOR: (0.526, 0.387)},
**kwargs,
)
_LOGGER.debug("Test switch from color_xy to color_temp")
assert not _attributes_have_changed(
_LOGGER.debug("Test switch from color_xy to color_temp - should detect mode change")
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 1, ATTR_XY_COLOR: (0.526, 0.387)},
new_attributes={ATTR_BRIGHTNESS: 1, ATTR_COLOR_TEMP_KELVIN: 2702},
**kwargs,
@ -2349,3 +2359,102 @@ async def test_simple_switch_state_after_async_added_to_hass(hass):
# State should still be correct after async_added_to_hass
assert switch_true._state is True
assert switch_false._state is False
def test_attributes_have_changed_light_mode_switch():
"""Test detection of external light mode changes (color_temp vs rgb vs xy).
Regression test for https://github.com/basnijholt/adaptive-lighting/issues/1275
When a user activates a Hue Scene (or similar) via an external app, the light
may switch from color_temp mode to RGB/XY mode (or vice versa). This should be
detected as an external change so AL doesn't immediately override it.
The _has_color_mode_changed() function checks the original attributes BEFORE
any conversion, enabling bidirectional mode change detection.
"""
context = Context()
base_kwargs = {
"light": "light.test",
"adapt_brightness": True,
"context": context,
}
# Test 1: adapt_color=True - all mode changes should be detected
kwargs_adapt_color = {**base_kwargs, "adapt_color": True}
# color_temp → RGB
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
**kwargs_adapt_color,
), "Should detect color_temp → RGB mode switch"
# color_temp → XY
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_XY_COLOR: (0.64, 0.33)},
**kwargs_adapt_color,
), "Should detect color_temp → XY mode switch"
# RGB → color_temp
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
**kwargs_adapt_color,
), "Should detect RGB → color_temp mode switch"
# RGB → XY
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_XY_COLOR: (0.64, 0.33)},
**kwargs_adapt_color,
), "Should detect RGB → XY mode switch"
# XY → color_temp
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_XY_COLOR: (0.64, 0.33)},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
**kwargs_adapt_color,
), "Should detect XY → color_temp mode switch"
# XY → RGB
assert _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_XY_COLOR: (0.64, 0.33)},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
**kwargs_adapt_color,
), "Should detect XY → RGB mode switch"
# No mode change - same type with same values shouldn't be detected
assert not _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
**kwargs_adapt_color,
), "Same color_temp should not be detected as change"
assert not _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
**kwargs_adapt_color,
), "Same RGB should not be detected as change"
assert not _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_XY_COLOR: (0.64, 0.33)},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_XY_COLOR: (0.64, 0.33)},
**kwargs_adapt_color,
), "Same XY should not be detected as change"
# Test 2: adapt_color=False - mode changes should NOT be detected
kwargs_no_adapt = {**base_kwargs, "adapt_color": False}
assert not _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
**kwargs_no_adapt,
), "Mode change should not be detected when adapt_color=False"
assert not _attributes_have_changed(
old_attributes={ATTR_BRIGHTNESS: 128, ATTR_RGB_COLOR: (255, 0, 0)},
new_attributes={ATTR_BRIGHTNESS: 128, ATTR_COLOR_TEMP_KELVIN: 4000},
**kwargs_no_adapt,
), "RGB → color_temp should not be detected when adapt_color=False"