1 files changed, 81 insertions, 0 deletions
diff --git a/internal/showcase/metadata_test.go b/internal/showcase/metadata_test.go
new file mode 100644
index 0000000..3aa49c1
--- /dev/null
+++ b/internal/showcase/metadata_test.go
@@ -0,0 +1,81 @@
+package showcase
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+)
+
+func TestCalculateRepoScore_IncreasesWithTagCount(t *testing.T) {
+	t.Parallel()
+
+	withoutTags := calculateRepoScore(5000, 14, 0)
+	withTags := calculateRepoScore(5000, 14, 10)
+
+	if withTags <= withoutTags {
+		t.Fatalf("expected tags to increase score, got without=%f with=%f", withoutTags, withTags)
+	}
+}
+
+func TestCalculateRepoScore_DecreasesWithAge(t *testing.T) {
+	t.Parallel()
+
+	recent := calculateRepoScore(5000, 7, 3)
+	old := calculateRepoScore(5000, 70, 3)
+
+	if recent <= old {
+		t.Fatalf("expected newer activity to score higher, got recent=%f old=%f", recent, old)
+	}
+}
+
+func TestGetLatestTag_ReturnsTotalTagCount(t *testing.T) {
+	t.Parallel()
+
+	repoPath := t.TempDir()
+	runGit(t, repoPath, "init")
+	runGit(t, repoPath, "config", "user.name", "Test User")
+	runGit(t, repoPath, "config", "user.email", "test@example.com")
+
+	writeAndCommit := func(name, content, message string) {
+		path := filepath.Join(repoPath, name)
+		if err := os.WriteFile(path, []byte(content), 0644); err != nil {
+			t.Fatalf("write file %s: %v", name, err)
+		}
+		runGit(t, repoPath, "add", name)
+		runGit(t, repoPath, "commit", "-m", message)
+	}
+
+	writeAndCommit("README.md", "first", "first")
+	runGit(t, repoPath, "tag", "notes")
+	runGit(t, repoPath, "tag", "v1.0.0")
+
+	writeAndCommit("README.md", "second", "second")
+	runGit(t, repoPath, "tag", "v1.1.0")
+
+	latestTag, _, hasReleases, tagCount, err := getLatestTag(repoPath)
+	if err != nil {
+		t.Fatalf("getLatestTag() error = %v", err)
+	}
+	if latestTag != "v1.1.0" {
+		t.Fatalf("latestTag = %q, want %q", latestTag, "v1.1.0")
+	}
+	if !hasReleases {
+		t.Fatal("expected hasReleases to be true")
+	}
+	if tagCount != 3 {
+		t.Fatalf("tagCount = %d, want %d", tagCount, 3)
+	}
+}
+
+func runGit(t *testing.T, repoPath string, args ...string) string {
+	t.Helper()
+
+	cmd := exec.Command("git", append([]string{"-C", repoPath}, args...)...)
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Fatalf("git %v failed: %v\n%s", args, err, string(output))
+	}
+
+	return string(output)
+}