title: Android Fragment Testing Error: Invalid signature file digest for Manifest main attributes
body: <p>Working on Android Fragment Testing but the test process is crashing as illustrated below:
  <a href="https://i.stack.imgur.com/4QJbd.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4QJbd.jpg" alt="enter image description here" /></a></p>
  <p>Logcat shows this error:
  <a href="https://i.stack.imgur.com/3vFX0.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3vFX0.jpg" alt="enter image description here" /></a></p>
  <p>Gradle(app) - I am using these Fragment Test Libraries:
  <a href="https://i.stack.imgur.com/ZWF7N.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZWF7N.jpg" alt="enter image description here" /></a></p>
  <p>Googled this error which is something to do with jar file signing and the recommended solution is to include this code on the gradle app.</p>
  <p><a href="https://i.stack.imgur.com/T3Bzg.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/T3Bzg.jpg" alt="enter image description here" /></a></p>
  <p>Unfortunately this is not working. Will appreciate your help on this.</p>