Add tests for sftp backend, split out id tests

backend/sftp_test.go

@@ -0,0 +1,45 @@
+package backend_test
+
+import (
+	"flag"
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/restic/restic/backend"
+)
+
+var sftpPath = flag.String("test.sftppath", "", "sftp binary path (default: empty)")
+
+func setupSFTPBackend(t *testing.T) *backend.SFTP {
+	tempdir, err := ioutil.TempDir("", "restic-test-")
+	ok(t, err)
+
+	b, err := backend.CreateSFTP(tempdir, *sftpPath)
+	ok(t, err)
+
+	t.Logf("created sftp backend locally at %s", tempdir)
+
+	return b
+}
+
+func teardownSFTPBackend(t *testing.T, b *backend.SFTP) {
+	if !*testCleanup {
+		t.Logf("leaving backend at %s\n", b.Location())
+		return
+	}
+
+	err := os.RemoveAll(b.Location())
+	ok(t, err)
+}
+
+func TestSFTPBackend(t *testing.T) {
+	if *sftpPath == "" {
+		t.Skipf("sftppath not set, skipping TestSFTPBackend")
+	}
+
+	s := setupSFTPBackend(t)
+	defer teardownSFTPBackend(t, s)
+
+	testBackend(s, t)
+}