android - How to mock Scanner scanner = new Scanner(file, "UTF-8") in Roboelectric

Question

I am facing an issue to mock below mention line using Roboelectric or Powermockito

File file = new File(context.getFilesDir() + FILE_NAME);
Scanner scanner = new Scanner(file, "UTF-8")

it throws me the below exception java.io.FileNotFoundException: "data/data/Logs/Text.txt" (The system cannot find the file specified)

Even though I was able to mock the file and set the path to the file.

Any suggestion on how to mock the scanner class.

question from:https://stackoverflow.com/questions/65599634/how-to-mock-scanner-scanner-new-scannerfile-utf-8-in-roboelectric

Answer 1

Got the solution for this, I just created the file in the resource folder with the same file name and added dummy text to it. So that when the scanner statement gets executed in the test case it will read the dummy file.