Add TestResetRepository and BenchmarkCreateSnapshot

src/restic/testing.go

@@ -184,3 +184,20 @@ func TestCreateSnapshot(t testing.TB, repo *repository.Repository, at time.Time,
 
 	return snapshot
 }
+
+// TestResetRepository removes all packs and indexes from the repository.
+func TestResetRepository(t testing.TB, repo *repository.Repository) {
+	done := make(chan struct{})
+	defer close(done)
+
+	for _, tpe := range []backend.Type{backend.Snapshot, backend.Index, backend.Data} {
+		for id := range repo.Backend().List(tpe, done) {
+			err := repo.Backend().Remove(tpe, id)
+			if err != nil {
+				t.Errorf("removing %v (%v) failed: %v", id[0:12], tpe, err)
+			}
+		}
+	}
+
+	repo.SetIndex(repository.NewMasterIndex())
+}

src/restic/testing_test.go

@@ -47,3 +47,15 @@ func TestCreateSnapshot(t *testing.T) {
 
 	checker.TestCheckRepo(t, repo)
 }
+
+func BenchmarkCreateSnapshot(b *testing.B) {
+	repo, cleanup := repository.TestRepository(b)
+	defer cleanup()
+
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		restic.TestCreateSnapshot(b, repo, testSnapshotTime, testDepth)
+		restic.TestResetRepository(b, repo)
+	}
+}