internal/releaseprep/releaseprep_test.go

@@ -62,3 +62,48 @@ func (s *PrepareSuite) TestPrepare_ReturnsErrorWhenUnreleasedSectionMissing() {
 
 	require.ErrorContains(s.T(), err, "unreleased section")
 }
+
+func (s *PrepareSuite) TestPrepare_ReturnsErrorWhenUnreleasedSectionIsEmpty() {
+	require.NoError(s.T(), os.WriteFile(
+		filepath.Join(s.rootDir, "changelog.md"),
+		[]byte("# Changelog\n\n## [Unreleased]\n\n## [1.1.6] - 2017-12-20\n"),
+		0o644,
+	))
+
+	err := releaseprep.Prepare(s.rootDir, "1.1.7", "2026-03-20")
+
+	require.ErrorContains(s.T(), err, "unreleased section is empty")
+}
+
+func (s *PrepareSuite) TestRecommendedTag_UsesMinorBumpWhenAddedEntriesExist() {
+	tag, err := releaseprep.RecommendedTag(s.rootDir)
+
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), "v1.2.0", tag)
+}
+
+func (s *PrepareSuite) TestRecommendedTag_UsesPatchBumpForFixOnlyChanges() {
+	require.NoError(s.T(), os.WriteFile(
+		filepath.Join(s.rootDir, "changelog.md"),
+		[]byte("# Changelog\n\n## [Unreleased]\n\n### Fixed\n\n- Patch note.\n\n## [1.1.6] - 2017-12-20\n"),
+		0o644,
+	))
+
+	tag, err := releaseprep.RecommendedTag(s.rootDir)
+
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), "v1.1.7", tag)
+}
+
+func (s *PrepareSuite) TestRecommendedTag_UsesMajorBumpWhenRemovedEntriesExist() {
+	require.NoError(s.T(), os.WriteFile(
+		filepath.Join(s.rootDir, "changelog.md"),
+		[]byte("# Changelog\n\n## [Unreleased]\n\n### Removed\n\n- Breaking removal.\n\n## [1.1.6] - 2017-12-20\n"),
+		0o644,
+	))
+
+	tag, err := releaseprep.RecommendedTag(s.rootDir)
+
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), "v2.0.0", tag)
+}