diff --git a/src/restic/checker/testing.go b/src/restic/checker/testing.go
new file mode 100644
index 000000000..a2ac3345d
--- /dev/null
+++ b/src/restic/checker/testing.go
@@ -0,0 +1,36 @@
+package checker
+
+import (
+	"restic/repository"
+	"testing"
+)
+
+// TestCheckRepo runs the checker on repo.
+func TestCheckRepo(t testing.TB, repo *repository.Repository) {
+	chkr := New(repo)
+
+	hints, errs := chkr.LoadIndex()
+	if len(errs) != 0 {
+		t.Fatalf("errors loading index: %v", errs)
+	}
+
+	if len(hints) != 0 {
+		t.Fatalf("errors loading index: %v", hints)
+	}
+
+	done := make(chan struct{})
+	defer close(done)
+	errChan := make(chan error)
+	go chkr.Structure(errChan, done)
+
+	for err := range errChan {
+		t.Error(err)
+	}
+
+	errChan = make(chan error)
+	go chkr.ReadData(nil, errChan, done)
+
+	for err := range errChan {
+		t.Error(err)
+	}
+}
diff --git a/src/restic/testing_test.go b/src/restic/testing_test.go
index fa71038ac..8ec68b7ff 100644
--- a/src/restic/testing_test.go
+++ b/src/restic/testing_test.go
@@ -45,30 +45,5 @@ func TestCreateSnapshot(t *testing.T) {
 		t.Fatalf("snapshot has zero tree ID")
 	}
 
-	chkr := checker.New(repo)
-
-	hints, errs := chkr.LoadIndex()
-	if len(errs) != 0 {
-		t.Fatalf("errors loading index: %v", errs)
-	}
-
-	if len(hints) != 0 {
-		t.Fatalf("errors loading index: %v", hints)
-	}
-
-	done := make(chan struct{})
-	defer close(done)
-	errChan := make(chan error)
-	go chkr.Structure(errChan, done)
-
-	for err := range errChan {
-		t.Error(err)
-	}
-
-	errChan = make(chan error)
-	go chkr.ReadData(nil, errChan, done)
-
-	for err := range errChan {
-		t.Error(err)
-	}
+	checker.TestCheckRepo(t, repo)
 }