lint: missing err check in test

backend/app/rest/api/rest_private_test.go

@@ -523,6 +523,7 @@ func TestRest_SavePictureCtrl(t *testing.T) {
 
 	m := map[string]string{}
 	err = json.Unmarshal(body, &m)
+	assert.NoError(t, err)
 	assert.Contains(t, m["id"], ".png")
 
 	// load picture
@@ -577,6 +578,7 @@ func TestRest_CreateWithPictures(t *testing.T) {
 		require.Nil(t, err)
 		m := map[string]string{}
 		err = json.Unmarshal(body, &m)
+		assert.NoError(t, err)
 		assert.Contains(t, m["id"], ".png")
 		return m["id"]
 	}

backend/app/store/image/fs_store_test.go

@@ -187,14 +187,14 @@ func TestFsStore_Cleanup(t *testing.T) {
 	assert.NotNil(t, err, "no file on staging anymore")
 }
 
-func prepareImageTest(t *testing.T) (svc FileSystem, teardown func()) {
+func prepareImageTest(t *testing.T) (svc *FileSystem, teardown func()) {
 	loc, err := ioutil.TempDir("", "test_image_r42")
 	require.NoError(t, err, "failed to make temp dir")
 
 	staging, err := ioutil.TempDir("", "test_image_r42.staging")
 	require.NoError(t, err, "failed to make temp staging dir")
 
-	svc = FileSystem{
+	svc = &FileSystem{
 		Location:   loc,
 		Staging:    staging,
 		Partitions: 100,