Ignore coverage for aiohttp_resolver backport helper (#115177)

* Ignore coverage for aiohttp_resolver backport helper

* Adjust generate to sort core items

* Adjust validate to sort core items

* Split line

* Apply suggestion

Co-authored-by: Dave T <17680170+davet2001@users.noreply.github.com>

* Fix suggestion

---------

Co-authored-by: Dave T <17680170+davet2001@users.noreply.github.com>

.coveragerc

@@ -6,11 +6,12 @@
 source = homeassistant
 omit =
     homeassistant/__main__.py
+    homeassistant/helpers/backports/aiohttp_resolver.py
     homeassistant/helpers/signal.py
     homeassistant/scripts/__init__.py
+    homeassistant/scripts/benchmark/__init__.py
     homeassistant/scripts/check_config.py
     homeassistant/scripts/ensure_config.py
-    homeassistant/scripts/benchmark/__init__.py
     homeassistant/scripts/macos/__init__.py
 
     # omit pieces of code that rely on external devices being present

script/hassfest/coverage.py

@@ -20,24 +20,17 @@ DONT_IGNORE = (
     "scene.py",
 )
 
-PREFIX = """# Sorted by hassfest.
+CORE_PREFIX = """# Sorted by hassfest.
 #
 # To sort, run python3 -m script.hassfest -p coverage
 
 [run]
 source = homeassistant
 omit =
-    homeassistant/__main__.py
-    homeassistant/helpers/signal.py
-    homeassistant/scripts/__init__.py
-    homeassistant/scripts/check_config.py
-    homeassistant/scripts/ensure_config.py
-    homeassistant/scripts/benchmark/__init__.py
-    homeassistant/scripts/macos/__init__.py
-
-    # omit pieces of code that rely on external devices being present
 """
-
+COMPONENTS_PREFIX = (
+    "    # omit pieces of code that rely on external devices being present\n"
+)
 SUFFIX = """[report]
 # Regexes for lines to exclude from consideration
 exclude_lines =
@@ -62,6 +55,7 @@ def validate(integrations: dict[str, Integration], config: Config) -> None:
     coverage_path = config.root / ".coveragerc"
 
     not_found: list[str] = []
+    unsorted: list[str] = []
     checking = False
 
     previous_line = ""
@@ -69,6 +63,10 @@ def validate(integrations: dict[str, Integration], config: Config) -> None:
         for line in fp:
             line = line.strip()
 
+            if line == COMPONENTS_PREFIX.strip():
+                previous_line = ""
+                continue
+
             if not line or line.startswith("#"):
                 continue
 
@@ -92,27 +90,21 @@ def validate(integrations: dict[str, Integration], config: Config) -> None:
                 not_found.append(line)
                 continue
 
+            if line < previous_line:
+                unsorted.append(line)
+            previous_line = line
+
             if not line.startswith("homeassistant/components/"):
                 continue
 
-            integration_path = path.parent
-            while len(integration_path.parts) > 3:
-                integration_path = integration_path.parent
-
-            integration = integrations[integration_path.name]
-
-            # Ensure sorted
-            if line < previous_line:
-                integration.add_error(
-                    "coverage",
-                    f"{line} is unsorted in .coveragerc file",
-                )
-            previous_line = line
-
-            # Ignore sub-directories for further checks
+            # Ignore sub-directories
             if len(path.parts) > 4:
                 continue
 
+            integration_path = path.parent
+
+            integration = integrations[integration_path.name]
+
             if (
                 path.parts[-1] == "*"
                 and Path(f"tests/components/{integration.domain}/__init__.py").exists()
@@ -132,6 +124,15 @@ def validate(integrations: dict[str, Integration], config: Config) -> None:
                         f"{check} must not be ignored by the .coveragerc file",
                     )
 
+    if unsorted:
+        config.add_error(
+            "coverage",
+            "Paths are unsorted in .coveragerc file. "
+            "Run python3 -m script.hassfest\n  - "
+            f"{'\n  - '.join(unsorted)}",
+            fixable=True,
+        )
+
     if not_found:
         raise RuntimeError(
             f".coveragerc references files that don't exist: {', '.join(not_found)}."
@@ -141,23 +142,31 @@ def validate(integrations: dict[str, Integration], config: Config) -> None:
 def generate(integrations: dict[str, Integration], config: Config) -> None:
     """Sort coverage."""
     coverage_path = config.root / ".coveragerc"
-    lines = []
-    start = False
+    core = []
+    components = []
+    section = "header"
 
     with coverage_path.open("rt") as fp:
         for line in fp:
-            if (
-                not start
-                and line
-                == "    # omit pieces of code that rely on external devices being present\n"
-            ):
-                start = True
-            elif line == "[report]\n":
+            if line == "[report]\n":
                 break
-            elif start and line != "\n":
-                lines.append(line)
 
-    content = f"{PREFIX}{"".join(sorted(lines))}\n\n{SUFFIX}"
+            if section != "core" and line == "omit =\n":
+                section = "core"
+            elif section != "components" and line == COMPONENTS_PREFIX:
+                section = "components"
+            elif section == "core" and line != "\n":
+                core.append(line)
+            elif section == "components" and line != "\n":
+                components.append(line)
+
+    assert core, "core should be a non-empty list"
+    assert components, "components should be a non-empty list"
+    content = (
+        f"{CORE_PREFIX}{"".join(sorted(core))}\n"
+        f"{COMPONENTS_PREFIX}{"".join(sorted(components))}\n"
+        f"\n{SUFFIX}"
+    )
 
     with coverage_path.open("w") as fp:
         fp.write(content)