tests for init

tests/test_init.py

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+import pytest
+import tempfile
+import shutil
+import os
+from modguard import errors
+from modguard.init import init_project
+from modguard.parsing.boundary import BOUNDARY_PRELUDE
+
+
+def init_project_from_root(root) -> None:
+    # Save the current working directory
+    saved_directory = os.getcwd()
+    try:
+        # Navigate to the root directory and call init_project
+        os.chdir(root)
+        init_project(root)
+    finally:
+        # Change back to the original directory
+        os.chdir(saved_directory)
+
+@pytest.fixture(scope="module")
+def test_root():
+    # Create a temporary directory to use as the root for testing
+    test_root = tempfile.mkdtemp()
+    yield test_root
+    # Remove the temporary directory after testing
+    shutil.rmtree(test_root)
+
+
+def test_init_project_with_valid_root(test_root):
+    # Create some mock files and directories for testing
+    test_dirs = [
+        "package1",
+        "package2",
+        "package3",
+        "package4/subpackage",
+        "package5/subpackage",
+    ]
+    for d in test_dirs:
+        os.makedirs(os.path.join(test_root, d))
+        with open(os.path.join(test_root, d, "__init__.py"), "w") as f:
+            f.write("# Mock __init__.py file")
+
+    # Create some mock Python files with imports and member names
+    file_contents = {
+        "package1/__init__.py": "from package4.subpackage import SubPackageClass\n",
+        "package2/__init__.py": "from package5.subpackage import SubPackageClass\n",
+        "package3/__init__.py": "from package1.module1 import Package1Class\nfrom package2.module2 import Package2Class\n",
+        "package4/subpackage/__init__.py": "",
+        "package5/subpackage/__init__.py": "",
+        "package1/module1.py": "class Package1Class:\n    pass\n",
+        "package2/module2.py": "class Package2Class:\n    pass\n",
+    }
+
+    for file_path, content in file_contents.items():
+        with open(os.path.join(test_root, file_path), "w") as f:
+            f.write(content)
+
+
+    # Call init_project with the test root
+    init_project_from_root(test_root)
+
+    # Check if __init__.py files have been modified as expected
+    for d in test_dirs:
+        with open(os.path.join(test_root, d, "__init__.py")) as f:
+            content = f.read()
+            assert BOUNDARY_PRELUDE in content
+
+    # Check if public members have been marked as expected
+    expected_public_files = [
+        ("package1/module1.py", 'import modguard\[email protected]\nclass Package1Class:\n    pass\n'),
+        ("package2/module2.py", 'import modguard\[email protected]\nclass Package2Class:\n    pass\n'),
+    ]
+    for file_path, expected_state in expected_public_files:
+        with open(os.path.join(test_root, file_path)) as f:
+            content = f.read()
+            assert content == expected_state
+
+
+def test_init_project_with_invalid_root():
+    with pytest.raises(errors.ModguardSetupError):
+        init_project("nonexistent_directory")