Automatically disable interrupts for ESP8266 GPIO16 binary sensors (#9467)

tests/component_tests/gpio/test_gpio_binary_sensor.py

@@ -0,0 +1,69 @@
+"""Tests for the GPIO binary sensor component."""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from pathlib import Path
+
+import pytest
+
+
+def test_gpio_binary_sensor_basic_setup(
+    generate_main: Callable[[str | Path], str],
+) -> None:
+    """
+    When the GPIO binary sensor is set in the yaml file, it should be registered in main
+    """
+    main_cpp = generate_main("tests/component_tests/gpio/test_gpio_binary_sensor.yaml")
+
+    assert "new gpio::GPIOBinarySensor();" in main_cpp
+    assert "App.register_binary_sensor" in main_cpp
+    assert "bs_gpio->set_use_interrupt(true);" in main_cpp
+    assert "bs_gpio->set_interrupt_type(gpio::INTERRUPT_ANY_EDGE);" in main_cpp
+
+
+def test_gpio_binary_sensor_esp8266_gpio16_disables_interrupt(
+    generate_main: Callable[[str | Path], str],
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """
+    Test that ESP8266 GPIO16 automatically disables interrupt mode with a warning
+    """
+    main_cpp = generate_main(
+        "tests/component_tests/gpio/test_gpio_binary_sensor_esp8266.yaml"
+    )
+
+    # Check that interrupt is disabled for GPIO16
+    assert "bs_gpio16->set_use_interrupt(false);" in main_cpp
+
+    # Check that the warning was logged
+    assert "GPIO16 on ESP8266 doesn't support interrupts" in caplog.text
+    assert "Falling back to polling mode" in caplog.text
+
+
+def test_gpio_binary_sensor_esp8266_other_pins_use_interrupt(
+    generate_main: Callable[[str | Path], str],
+) -> None:
+    """
+    Test that ESP8266 pins other than GPIO16 still use interrupt mode
+    """
+    main_cpp = generate_main(
+        "tests/component_tests/gpio/test_gpio_binary_sensor_esp8266.yaml"
+    )
+
+    # GPIO5 should still use interrupts
+    assert "bs_gpio5->set_use_interrupt(true);" in main_cpp
+    assert "bs_gpio5->set_interrupt_type(gpio::INTERRUPT_ANY_EDGE);" in main_cpp
+
+
+def test_gpio_binary_sensor_explicit_polling_mode(
+    generate_main: Callable[[str | Path], str],
+) -> None:
+    """
+    Test that explicitly setting use_interrupt: false works
+    """
+    main_cpp = generate_main(
+        "tests/component_tests/gpio/test_gpio_binary_sensor_polling.yaml"
+    )
+
+    assert "bs_polling->set_use_interrupt(false);" in main_cpp