Trim comment essays and hoist function-local test imports

tests/unit_tests/components/esp8266/test_toolchain_validation.py

@@ -3,10 +3,12 @@
 from __future__ import annotations
 
 from pathlib import Path
+from types import SimpleNamespace
 from unittest.mock import patch
 
 import pytest
 
+from esphome.components import esp8266
 from esphome.components.esp8266 import (
     ARDUINO_FRAMEWORK_SCHEMA,
     _resolve_toolchain,
@@ -120,7 +122,6 @@ def test_decode_pc_native_missing_tools_warns_once(
     tmp_path: Path, caplog: pytest.LogCaptureFixture
 ) -> None:
     """A stack dump of many addresses produces one missing-tool warning."""
-    from esphome.components import esp8266
 
     esp8266._DECODE_WARNED_AT.clear()
     with (
@@ -145,9 +146,6 @@ def test_decode_pc_platformio_missing_tools_warns_once(
     """The PlatformIO branch reports a missing addr2line/ELF at the same
     warning level as the native one; raw undecoded addresses with no
     stated reason are undiagnosable at default log level."""
-    from types import SimpleNamespace
-
-    from esphome.components import esp8266
 
     esp8266._DECODE_WARNED_AT.clear()
     CORE.toolchain = Toolchain.PLATFORMIO
@@ -161,7 +159,6 @@ def test_decode_pc_platformio_missing_tools_warns_once(
 
 def test_resolve_toolchain_rejects_unsupported() -> None:
     """ESP8266 rejects a CLI toolchain it cannot serve, like every platform."""
-    from esphome.components.esp8266 import _resolve_toolchain
 
     CORE.toolchain = Toolchain.SDK_NRF
     with pytest.raises(cv.Invalid, match="Unsupported toolchain 'sdk-nrf'"):

tests/unit_tests/test_main.py

@@ -23,6 +23,7 @@ from esphome.__main__ import (
     Purpose,
     _get_configured_xtal_freq,
     _make_crystal_freq_callback,
+    _native_toolchain_module,
     _redact_with_legacy_fallback,
     _resolve_network_devices,
     _split_network_devices,
@@ -7341,8 +7342,6 @@ def test_compile_program_espidf_idedata_none_warns(
 def test_native_toolchain_module_missing_hook_raises(tmp_path: Path) -> None:
     """A resolved native toolchain whose platform lacks the hook is a bug
     and must fail, not silently degrade to the PlatformIO path."""
-    from esphome.__main__ import _native_toolchain_module
-
     setup_core(platform=PLATFORM_ESP32, tmp_path=tmp_path, name="test_device")
     CORE.toolchain = Toolchain.ARDUINO  # esp32 provides no hook
     with pytest.raises(EsphomeError, match="no native toolchain module"):