✨ feat: Initial commit

internal/scanner/scanner_test.go

@@ -0,0 +1,86 @@
+package scanner
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"sort"
+	"testing"
+)
+
+func runGit(t *testing.T, dir string, args ...string) {
+	t.Helper()
+	cmd := exec.Command("git", args...)
+	cmd.Dir = dir
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Fatalf("git %v failed: %v\n%s", args, err, out)
+	}
+}
+
+func TestScanExtractsAuthorCommitterAndTrailers(t *testing.T) {
+	dir := t.TempDir()
+	runGit(t, dir, "init", "-q")
+	runGit(t, dir, "config", "user.email", "author@example.com")
+	runGit(t, dir, "config", "user.name", "Author One")
+
+	if err := os.WriteFile(filepath.Join(dir, "file.txt"), []byte("hello"), 0644); err != nil {
+		t.Fatal(err)
+	}
+	runGit(t, dir, "add", "file.txt")
+	runGit(t, dir, "commit", "-q", "-m",
+		"Initial commit\n\nCo-authored-by: Helper Two <helper@example.com>\nSigned-off-by: Author One <author@example.com>")
+
+	runGit(t, dir, "-c", "user.name=Committer Three", "-c", "user.email=committer@example.com",
+		"commit", "-q", "--allow-empty", "-m", "second commit")
+
+	gitDir, cleanup, err := Clone("smoke/test", "file://"+dir, "")
+	if err != nil {
+		t.Fatalf("Clone failed: %v", err)
+	}
+	defer cleanup()
+
+	count, err := CountCommits(gitDir)
+	if err != nil {
+		t.Fatalf("CountCommits failed: %v", err)
+	}
+	if count != 2 {
+		t.Errorf("expected 2 commits, got %d", count)
+	}
+
+	var entries []Entry
+	commitsSeen := 0
+	if err := StreamLog(gitDir, "smoke/test", func(e []Entry) {
+		commitsSeen++
+		entries = append(entries, e...)
+	}); err != nil {
+		t.Fatalf("StreamLog failed: %v", err)
+	}
+	if commitsSeen != 2 {
+		t.Errorf("expected onCommit called 2 times, got %d", commitsSeen)
+	}
+
+	got := map[string]bool{}
+	for _, e := range entries {
+		got[e.Field+"|"+e.Name+"|"+e.Email] = true
+	}
+
+	want := []string{
+		"Author|Author One|author@example.com",
+		"Committer|Author One|author@example.com",
+		"Co-authored-by|Helper Two|helper@example.com",
+		"Signed-off-by|Author One|author@example.com",
+		"Author|Author One|author@example.com",
+		"Committer|Committer Three|committer@example.com",
+	}
+	for _, w := range want {
+		if !got[w] {
+			all := make([]string, 0, len(got))
+			for k := range got {
+				all = append(all, k)
+			}
+			sort.Strings(all)
+			t.Errorf("expected entry %q not found; got: %v", w, all)
+		}
+	}
+}