test(commands/commit): add a test for is_blank_commit_file

commitizen/commands/commit.py

@@ -97,8 +97,8 @@ def manual_edit(self, message: str) -> str:
     def is_blank_commit_file(self, filename) -> bool:
         if not exists(filename):
             return True
-        with open(filename, "tr") as f:
-            for x in f:
+        with open(filename) as f:
+            for x in f.readlines():
                 if len(x) == 0 or x[0] == "#":
                     continue
                 elif x[0] != "\r" and x[0] != "\n":

tests/commands/test_commit_command.py

@@ -541,6 +541,11 @@ def test_commit_from_pre_commit_msg_hook(config, mocker, capsys):
         "footer": "",
     }
 
+    is_blank_commit_file_mock = mocker.patch(
+        "commitizen.commands.commit.Commit.is_blank_commit_file"
+    )
+    is_blank_commit_file_mock.return_value = True
+
     commit_mock = mocker.patch("commitizen.git.commit")
     commit_mock.return_value = cmd.Command("success", "", "", "", 0)
 
@@ -554,3 +559,52 @@ def test_commit_from_pre_commit_msg_hook(config, mocker, capsys):
     out, _ = capsys.readouterr()
     assert "Commit message is successful!" in out
     commit_mock.assert_not_called()
+
+
+def test_commit_with_msg_from_pre_commit_msg_hook(config, mocker, capsys):
+    testargs = ["cz", "commit", "--commit-msg-file", "some_file"]
+    mocker.patch.object(sys, "argv", testargs)
+
+    prompt_mock = mocker.patch("questionary.prompt")
+    prompt_mock.return_value = {
+        "prefix": "feat",
+        "subject": "user created",
+        "scope": "",
+        "is_breaking_change": False,
+        "body": "",
+        "footer": "",
+    }
+
+    is_blank_commit_file_mock = mocker.patch(
+        "commitizen.commands.commit.Commit.is_blank_commit_file"
+    )
+    is_blank_commit_file_mock.return_value = False
+
+    commit_mock = mocker.patch("commitizen.git.commit")
+    commit_mock.return_value = cmd.Command("success", "", "", "", 0)
+
+    cli.main()
+
+    prompt_mock.assert_not_called()
+    commit_mock.assert_not_called()
+
+
+@pytest.mark.parametrize(
+    "isexist, commitmsg, returnvalue",
+    [
+        [False, "", True],
+        [True, "\n#test", True],
+        [True, "test: test\n#test", False],
+        [True, "#test: test\n#test", True],
+    ],
+)
+def test_is_blank_commit_file(config, mocker, isexist, commitmsg, returnvalue):
+    exists_mock = mocker.patch("commitizen.commands.commit.exists")
+    exists_mock.return_value = isexist
+
+    reader_mock = mocker.mock_open(read_data=commitmsg)
+    mocker.patch("builtins.open", reader_mock)
+
+    commit_cmd = commands.Commit(config, {})
+    ret = commit_cmd.is_blank_commit_file("test")
+    assert ret == returnvalue

tests/wrap_stdio/test_wrap_stdio.py

@@ -2,6 +2,13 @@
 
 from commitizen import wrap_stdio
 
+
+def test_import_sub_files():
+    import commitizen.wrap_stdio.linux  # noqa: F401
+    import commitizen.wrap_stdio.unix  # noqa: F401
+    import commitizen.wrap_stdio.windows  # noqa: F401
+
+
 if sys.platform == "win32":  # pragma: no cover
     pass
 elif sys.platform == "linux":