fix: fix getting current version when version_source=tag_only (#437)

semantic_release/history/__init__.py

@@ -228,7 +228,7 @@ def get_current_version(prerelease_version: bool = False) -> str:
     :return: A string with the current version number
     """
     omit_pattern = None if prerelease_version else get_prerelease_pattern()
-    if config.get("version_source") == "tag":
+    if config.get("version_source") in ["tag", "tag_only"]:
         return get_current_version_by_tag(omit_pattern)
     current_version = get_current_version_by_config_file(omit_pattern)
     if omit_pattern and omit_pattern in current_version:

tests/history/test_version.py

@@ -16,6 +16,7 @@
     get_previous_version,
     load_version_declarations,
     set_new_version,
+    get_current_version_by_config_file,
 )
 
 from .. import wrapped_config_get
@@ -50,6 +51,23 @@ def test_current_version_should_return_default_version(mock_last_version):
     assert "0.0.0" == get_current_version()
 
 
+@mock.patch(
+    "semantic_release.history.config.get", wrapped_config_get(version_source="tag_only")
+)
+def test_current_version_should_run_with_tag_only(mocker):
+    mock_get_current_version_by_tag = mocker.patch(
+        "semantic_release.history.get_current_version_by_tag", return_value=None
+    )
+    mock_get_current_version_by_config_file = mocker.patch(
+        "semantic_release.history.get_current_version_by_config_file", return_value=None
+    )
+
+    get_current_version()
+
+    assert mock_get_current_version_by_tag.called
+    assert not mock_get_current_version_by_config_file.called
+
+
 class TestGetPreviousVersion:
     @mock.patch(
         "semantic_release.history.get_commit_log",