test(command/version): add test case for showing commitizen and project version

Author: Lee-W

tests/test_commands.py

@@ -9,6 +9,7 @@
 from commitizen import cmd, commands, defaults
 from commitizen.cz.exceptions import CzException
 from commitizen.config import BaseConfig
+from commitizen.__version__ import __version__
 
 
 @pytest.fixture()
@@ -171,11 +172,22 @@ def test_list_cz(config):
         mocked_write.assert_called_once()
 
 
-def test_version(config):
-    with mock.patch("commitizen.out.write") as mocked_write:
+def test_version_for_showing_project_version(config, capsys):
+    # No version exist
+    commands.Version(config, {"project": True, "commitizen": False})()
+    captured = capsys.readouterr()
+    assert "No project information in this project." in captured.err
 
-        commands.Version(config, {})()
-        mocked_write.assert_called_once()
+    config.settings["version"] = "v0.0.1"
+    commands.Version(config, {"project": True, "commitizen": False})()
+    captured = capsys.readouterr()
+    assert "Project Version: v0.0.1" in captured.out
+
+
+def test_version_for_showing_commitizen_version(config, capsys):
+    commands.Version(config, {"project": False, "commitizen": True})()
+    captured = capsys.readouterr()
+    assert f"Installed Commitizen Version: {__version__}" in captured.out
 
 
 def test_check_no_conventional_commit(config, mocker):