diff --git a/pkg/gcsstore/gcsstore.go b/pkg/gcsstore/gcsstore.go
index 20a4d77..7c8ca28 100644
--- a/pkg/gcsstore/gcsstore.go
+++ b/pkg/gcsstore/gcsstore.go
@@ -3,7 +3,7 @@
 // GCSStore is a storage backend that uses the GCSAPI interface in order to store uploads
 // on GCS. Uploads will be represented by two files in GCS; the data file will be stored
 // as an extensionless object [uid] and the JSON info file will stored as [uid].info.
-// In order to store uploads on GCS, make sure to specifiy the appropriate Google service
+// In order to store uploads on GCS, make sure to specify the appropriate Google service
 // account file path in the GCS_SERVICE_ACCOUNT_FILE environment variable. Also make sure that
 // this service account file has the "https://www.googleapis.com/auth/devstorage.read_write"
 // scope enabled so you can read and write data to the storage buckets associated with the
@@ -163,7 +163,7 @@ func (upload gcsUpload) GetInfo(ctx context.Context) (handler.FileInfo, error) {
 		return info, err
 	}
 
-	prefix := fmt.Sprintf("%s", store.keyWithPrefix(id))
+	prefix := store.keyWithPrefix(id)
 	filterParams := GCSFilterParams{
 		Bucket: store.Bucket,
 		Prefix: prefix,
diff --git a/pkg/gcsstore/gcsstore_test.go b/pkg/gcsstore/gcsstore_test.go
index ffbe225..e1a16e1 100644
--- a/pkg/gcsstore/gcsstore_test.go
+++ b/pkg/gcsstore/gcsstore_test.go
@@ -146,7 +146,7 @@ func TestGetInfo(t *testing.T) {
 
 	filterParams := gcsstore.GCSFilterParams{
 		Bucket: store.Bucket,
-		Prefix: fmt.Sprintf("%s", mockID),
+		Prefix: mockID,
 	}
 
 	mockObjectParams0 := gcsstore.GCSObjectParams{
@@ -319,7 +319,7 @@ func TestFinishUpload(t *testing.T) {
 
 	filterParams2 := gcsstore.GCSFilterParams{
 		Bucket: store.Bucket,
-		Prefix: fmt.Sprintf("%s", mockID),
+		Prefix: mockID,
 	}
 
 	composeParams := gcsstore.GCSComposeParams{
@@ -360,7 +360,7 @@ func TestFinishUpload(t *testing.T) {
 
 	objectParams := gcsstore.GCSObjectParams{
 		Bucket: store.Bucket,
-		ID:     fmt.Sprintf("%s", mockID),
+		ID:     mockID,
 	}
 
 	metadata := map[string]string{
@@ -394,39 +394,6 @@ func TestFinishUpload(t *testing.T) {
 	cancel()
 }
 
-var mockTusdChunk0InfoJson = fmt.Sprintf(`{"ID":"%s","Size":%d,"Offset":%d,"MetaData":{"foo":"bar"}}`, mockID, mockSize, mockSize/3)
-var mockTusdChunk1Info = handler.FileInfo{
-	ID:     mockID,
-	Size:   mockSize,
-	Offset: 455,
-	MetaData: map[string]string{
-		"foo": "bar",
-	},
-}
-
-type MockWriteChunkReader struct{}
-
-func (r MockWriteChunkReader) Close() error {
-	return nil
-}
-
-func (r MockWriteChunkReader) ContentType() string {
-	return "text/plain; charset=utf-8"
-}
-
-func (r MockWriteChunkReader) Read(p []byte) (int, error) {
-	copy(p, mockTusdChunk0InfoJson)
-	return len(p), nil
-}
-
-func (r MockWriteChunkReader) Remain() int64 {
-	return int64(len(mockTusdChunk0InfoJson))
-}
-
-func (r MockWriteChunkReader) Size() int64 {
-	return int64(len(mockTusdChunk0InfoJson))
-}
-
 func TestWriteChunk(t *testing.T) {
 	mockCtrl := gomock.NewController(t)
 	defer mockCtrl.Finish()
@@ -459,14 +426,12 @@ func TestWriteChunk(t *testing.T) {
 		service.EXPECT().WriteObject(ctx, writeObjectParams, rGet).Return(int64(len(mockReaderData)), nil),
 	)
 
-	reader := bytes.NewReader([]byte(mockReaderData))
-	var offset int64
-	offset = mockSize / 3
-
 	upload, err := store.GetUpload(context.Background(), mockID)
 	assert.Nil(err)
 
+	reader := bytes.NewReader([]byte(mockReaderData))
+	var offset int64 = mockSize / 3
+
 	_, err = upload.WriteChunk(context.Background(), offset, reader)
 	assert.Nil(err)
-
 }
diff --git a/pkg/handler/head_test.go b/pkg/handler/head_test.go
index a721db0..48c7f87 100644
--- a/pkg/handler/head_test.go
+++ b/pkg/handler/head_test.go
@@ -82,7 +82,7 @@ func TestHead(t *testing.T) {
 			},
 		}).Run(handler, t)
 
-		if string(res.Body.Bytes()) != "" {
+		if res.Body.String() != "" {
 			t.Errorf("Expected empty body for failed HEAD request")
 		}
 	})
diff --git a/pkg/handler/utils_test.go b/pkg/handler/utils_test.go
index 038b0f4..c2e6356 100644
--- a/pkg/handler/utils_test.go
+++ b/pkg/handler/utils_test.go
@@ -82,8 +82,8 @@ func (test *httpTest) Run(handler http.Handler, t *testing.T) *httptest.Response
 		}
 	}
 
-	if test.ResBody != "" && string(w.Body.Bytes()) != test.ResBody {
-		t.Errorf("Expected '%s' as body (got '%s'", test.ResBody, string(w.Body.Bytes()))
+	if test.ResBody != "" && w.Body.String() != test.ResBody {
+		t.Errorf("Expected '%s' as body (got '%s'", test.ResBody, w.Body.String())
 	}
 
 	return w