!1 Merge back to master

Merge pull request !1 from dev branch

server/libs/qtube/test_helper.go

@@ -0,0 +1,28 @@
+package qtube
+
+type StubFile struct {
+	Content string
+	Offset  int64
+}
+
+func (file *StubFile) Read(p []byte) (int, error) {
+	copied := copy(p[:], []byte(file.Content)[:len(p)])
+	return copied, nil
+}
+
+func (file *StubFile) Seek(offset int64, whence int) (int64, error) {
+	file.Offset = offset
+	return offset, nil
+}
+
+func (file *StubFile) Close() error {
+	return nil
+}
+
+type stubFiler struct {
+	file *StubFile
+}
+
+func (filer *stubFiler) Open(filePath string) (ReadSeekCloser, error) {
+	return filer.file, nil
+}