# Review Comment

- **Author:** coderabbitai[bot]
- **File:** `tests/test_i2v_cli_click.py`
- **Line:** 56
- **Date:** 2026-02-06
- **Comment ID:** 2772348948
- **URL:** https://github.com/donghaozhang/video-agent-skill/pull/19#discussion_r2772348948

---

_⚠️ Potential issue_ | _🟠 Major_

<details>
<summary>🧩 Analysis chain</summary>

🏁 Script executed:

```shell
# Check if the file exists and read the relevant section
if [ -f "tests/test_i2v_cli_click.py" ]; then
  echo "=== File contents (lines 1-60) ==="
  head -60 tests/test_i2v_cli_click.py | cat -n
else
  echo "File not found"
fi
```

Repository: donghaozhang/video-agent-skill

Length of output: 2537

---

🏁 Script executed:

```shell
# Search for all test files to understand project structure
find tests -name "*.py" -type f | head -20
```

Repository: donghaozhang/video-agent-skill

Length of output: 630

---

🏁 Script executed:

```shell
# Check if this is a new test file or existing
git log --oneline tests/test_i2v_cli_click.py 2>/dev/null | head -5
```

Repository: donghaozhang/video-agent-skill

Length of output: 132

---

🏁 Script executed:

```shell
# Search for other test files to see how they handle docstrings
rg "def test_" tests/ -A 3 | head -50
```

Repository: donghaozhang/video-agent-skill

Length of output: 3275

---



</details>

**Add type hints and Google‑style docstrings to fixtures and test methods.**

The fixture and test methods lack type hints and docstrings. Per guidelines: all public methods in test files must include type hints for parameters and return values, and docstrings with Args, Returns, and Example sections.

<details>
<summary>✏️ Example pattern (apply to all tests/fixtures)</summary>

```diff
-@pytest.fixture
-def runner():
-    return CliRunner()
+@pytest.fixture
+def runner() -> CliRunner:
+    """Create a Click test runner.
+
+    Returns:
+        CliRunner: Runner instance.
+
+    Example:
+        runner.invoke(cli, ["--help"])
+    """
+    return CliRunner()

-class TestImageToVideoCLI:
+class TestImageToVideoCLI:
     """Test fal-image-to-video Click CLI."""
 
-    def test_help(self, runner):
+    def test_help(self, runner: CliRunner) -> None:
+        """Validate top-level help output.
+
+        Args:
+            runner: Click test runner.
+
+        Returns:
+            None
+
+        Example:
+            runner.invoke(cli, ["--help"])
+        """
         result = runner.invoke(cli, ["--help"])
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In `@tests/test_i2v_cli_click.py` around lines 8 - 56, Add type hints and
Google-style docstrings to the runner fixture and each test method in
TestImageToVideoCLI: annotate the fixture as def runner() -> CliRunner and each
test as def test_xxx(runner: CliRunner) -> None, and add a Google-style
docstring for each (including Args, Returns, and an Example) that describes the
test purpose and expected behavior; update function names referenced: runner,
TestImageToVideoCLI.test_help, test_generate_help, test_list_models,
test_model_info, test_interpolate_help, test_generate_missing_image,
test_generate_missing_prompt, and test_no_command_shows_help to include these
annotations and docstrings consistently.
```

</details>

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