test(commit_command): testing '--allow-empty' flag for cz commit

Signed-off-by: Adrian DC <[email protected]>

Author: Dranaxel

Diff for: tests/commands/test_commit_command.py

@@ -324,6 +324,30 @@ def test_commit_when_nothing_to_commit(config, mocker: MockFixture):
     assert "No files added to staging!" in str(excinfo.value)
 
 
+@pytest.mark.usefixtures("staging_is_clean")
+def test_commit_with_allow_empty(config, mocker: MockFixture):
+    prompt_mock = mocker.patch("questionary.prompt")
+    prompt_mock.return_value = {
+        "prefix": "feat",
+        "subject": "user created",
+        "scope": "",
+        "is_breaking_change": False,
+        "body": "closes #21",
+        "footer": "",
+    }
+
+    commit_mock = mocker.patch("commitizen.git.commit")
+    commit_mock.return_value = cmd.Command("success", "", b"", b"", 0)
+    success_mock = mocker.patch("commitizen.out.success")
+
+    commands.Commit(config, {"allow_empty": True})()
+
+    commit_mock.assert_called_with(
+        "feat: user created\n\ncloses #21", args="--allow-empty"
+    )
+    success_mock.assert_called_once()
+
+
 @pytest.mark.usefixtures("staging_is_clean")
 def test_commit_when_customized_expected_raised(config, mocker: MockFixture, capsys):
     _err = ValueError()