test(miner): cover C and C++ source scanning

Author: MichaelWave369

tests/test_cpp_readable_extensions.py

@@ -0,0 +1,23 @@
+from mempalace.miner import READABLE_EXTENSIONS, scan_project
+
+
+CPP_EXTENSIONS = {".c", ".h", ".cpp", ".hpp", ".cc", ".cxx", ".inl"}
+
+
+def test_cpp_extensions_are_readable():
+    assert CPP_EXTENSIONS <= READABLE_EXTENSIONS
+
+
+def test_scan_project_includes_cpp_files_case_insensitively(tmp_path):
+    expected = []
+    for index, extension in enumerate(sorted(CPP_EXTENSIONS)):
+        filename = f"example_{index}{extension}"
+        (tmp_path / filename).write_text("int main() { return 0; }\n", encoding="utf-8")
+        expected.append(filename)
+
+    (tmp_path / "uppercase.CPP").write_text("int main() { return 0; }\n", encoding="utf-8")
+    expected.append("uppercase.CPP")
+
+    files = scan_project(str(tmp_path))
+    scanned = sorted(path.relative_to(tmp_path).as_posix() for path in files)
+    assert scanned == sorted(expected)