[fastled_base] Use FastLED IDF component on ESP32 (#16804)

tests/unit_tests/test_espidf_clang_tidy.py

@@ -0,0 +1,39 @@
+"""Tests for esphome.espidf.clang_tidy tidy-project setup."""
+
+import os
+from pathlib import Path
+
+import pytest
+
+from esphome.espidf.clang_tidy import _Settings, _setup_core
+
+
+def _settings(target_framework: str) -> _Settings:
+    return _Settings(
+        idf_target="esp32",
+        variant="ESP32",
+        idf_version="5.5.4",
+        target_framework=target_framework,
+        platform_defines=("USE_ESP32",),
+        framework_deps={},
+    )
+
+
+@pytest.mark.parametrize(
+    ("target_framework", "expected"),
+    [("arduino", "1"), ("espidf", "0")],
+)
+def test_setup_core_sets_arduino_env(
+    tmp_path: Path,
+    monkeypatch: pytest.MonkeyPatch,
+    target_framework: str,
+    expected: str,
+) -> None:
+    """_setup_core sets ESPHOME_ARDUINO, which gates arduino-only manifest deps."""
+    # monkeypatch snapshots os.environ, so the env var _setup_core writes is
+    # restored after the test instead of leaking into later tests.
+    monkeypatch.delenv("ESPHOME_ARDUINO", raising=False)
+
+    _setup_core(tmp_path / "proj", _settings(target_framework))
+
+    assert os.environ["ESPHOME_ARDUINO"] == expected