updated tests for readme generations

tests/renderers/mkdocs/test_mkdocs_module_coverage.py

@@ -17,6 +17,12 @@ def test_mkdocs_emits_all_modules(tmp_path: Path) -> None:
     renderer = MkDocsRenderer()
     renderer.generate_sources(project, tmp_path)
 
+    renderer.generate_readme(
+        project,
+        tmp_path,
+        module_is_source=True,
+    )
+
     emitted = {
         p.relative_to(tmp_path).as_posix()
         for p in tmp_path.rglob("*.md")
@@ -39,3 +45,8 @@ def test_mkdocs_emits_all_modules(tmp_path: Path) -> None:
 
     missing = expected - emitted
     assert not missing, f"Missing markdown files for modules: {missing}"
+
+    readme = tmp_path.parent / "README.md"
+    assert readme.exists(), "README.md was not generated"
+    content = readme.read_text(encoding="utf-8")
+    assert project.name in content