ansible-test - Fix PS coverage `--all` generation.

changelogs/fragments/ansible-test-powershell-coverage-all.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - ansible-test - Fix traceback when using the ``--all`` option with PowerShell code coverage.

test/lib/ansible_test/_internal/commands/coverage/combine.py

@@ -60,6 +60,8 @@ from . import (
     PathChecker,
 )
 
+TValue = t.TypeVar('TValue')
+
 
 def command_coverage_combine(args):  # type: (CoverageCombineConfig) -> None
     """Patch paths in coverage files and merge into a single file."""
@@ -113,9 +115,12 @@ def _command_coverage_combine_python(args, host_state):  # type: (CoverageCombin
 
     coverage_files = get_python_coverage_files()
 
+    def _default_stub_value(source_paths: list[str]) -> dict[str, set[tuple[int, int]]]:
+        return {path: set() for path in source_paths}
+
     counter = 0
     sources = _get_coverage_targets(args, walk_compile_targets)
-    groups = _build_stub_groups(args, sources, lambda s: dict((name, set()) for name in s))
+    groups = _build_stub_groups(args, sources, _default_stub_value)
 
     collection_search_re, collection_sub_re = get_collection_path_regexes()
 
@@ -185,7 +190,7 @@ def _command_coverage_combine_powershell(args):  # type: (CoverageCombineConfig)
     """Combine PowerShell coverage files and return a list of the output files."""
     coverage_files = get_powershell_coverage_files()
 
-    def _default_stub_value(source_paths):
+    def _default_stub_value(source_paths: list[str]) -> dict[str, dict[int, int]]:
         cmd = ['pwsh', os.path.join(ANSIBLE_TEST_TOOLS_ROOT, 'coverage_stub.ps1')]
         cmd.extend(source_paths)
 
@@ -234,12 +239,9 @@ def _command_coverage_combine_powershell(args):  # type: (CoverageCombineConfig)
         coverage_data = dict((filename, data) for filename, data in groups[group].items() if path_checker.check_path(filename))
 
         if args.all:
-            # Add 0 line entries for files not in coverage_data
-            for source, source_line_count in sources:
-                if source in coverage_data:
-                    continue
-
-                coverage_data[source] = _default_stub_value(source_line_count)
+            missing_sources = [source for source, _source_line_count in sources if source not in coverage_data]
+            stubs = _default_stub_value(missing_sources)
+            coverage_data.update(stubs)
 
         if not args.explain:
             if args.export:
@@ -278,17 +280,19 @@ def _get_coverage_targets(args, walk_func):  # type: (CoverageCombineConfig, t.C
     return sources
 
 
-def _build_stub_groups(args, sources, default_stub_value):
+def _build_stub_groups(
+        args: CoverageCombineConfig,
+        sources: list[tuple[str, int]],
+        default_stub_value: t.Callable[[list[str]], dict[str, TValue]],
+) -> dict[str, dict[str, TValue]]:
     """
-    :type args: CoverageCombineConfig
-    :type sources: List[tuple[str, int]]
-    :type default_stub_value: Func[List[str]]
-    :rtype: dict
+    Split the given list of sources with line counts into groups, maintaining a maximum line count for each group.
+    Each group consists of a dictionary of sources and default coverage stubs generated by the provided default_stub_value function.
     """
     groups = {}
 
     if args.stub:
-        stub_group = []
+        stub_group: list[str] = []
         stub_groups = [stub_group]
         stub_line_limit = 500000
         stub_line_count = 0