@startuml
class LineImageSaver {
  - doPost(e: any)
  - saveImageToDrive(imageData: any)
}

class LineMock {
  - getTestData(): any
}

class LineTestData {
  - imageData: any
}

LineImageSaver -> LineMock: getTestData()
LineImageSaver -> GoogleDrive: saveImage
@enduml