Move config_per_platform and extract_domain_configs to config.py (#104989)

tests/helpers/test_init.py

@@ -2,10 +2,12 @@
 
 from collections import OrderedDict
 
+import pytest
+
 from homeassistant import helpers
 
 
-def test_extract_domain_configs() -> None:
+def test_extract_domain_configs(caplog: pytest.LogCaptureFixture) -> None:
     """Test the extraction of domain configuration."""
     config = {
         "zone": None,
@@ -19,8 +21,13 @@ def test_extract_domain_configs() -> None:
         helpers.extract_domain_configs(config, "zone")
     )
 
+    assert (
+        "helpers.extract_domain_configs is a deprecated function which will be removed "
+        "in HA Core 2024.6. Use config.extract_domain_configs instead" in caplog.text
+    )
 
-def test_config_per_platform() -> None:
+
+def test_config_per_platform(caplog: pytest.LogCaptureFixture) -> None:
     """Test config per platform method."""
     config = OrderedDict(
         [
@@ -36,3 +43,8 @@ def test_config_per_platform() -> None:
         (None, 1),
         ("hello 2", config["zone Hallo"][1]),
     ] == list(helpers.config_per_platform(config, "zone"))
+
+    assert (
+        "helpers.config_per_platform is a deprecated function which will be removed "
+        "in HA Core 2024.6. Use config.config_per_platform instead" in caplog.text
+    )