Add thorough tests for the question player

[BenHenning]

Similar to #388 we need thorough tests for the question player once these can be written in a reliable way for both Espresso & Robolectric.

Test reference: https://github.com/oppia/oppia-android/blob/develop/app/src/sharedTest/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityTest.kt

[BenHenning]

Enough of #89 is now complete that this is no longer blocked.

[chrk2205]

@anandwana001 I would like to work on this

[anandwana001]

@chrk2205 assigned to you.
Few points to get start:

1. Write down all the edges case which needs to get tested.
2. Don't include end to end test, example like opening and activity and the checking any view. Robolectric doesn't support end to end test.
3. All the test should pass on both espresso and robolectric

How you can send a pr for this:

1. After writing all the points what we need to test, create a comment block in the test file and write the test names and send for review
2. Once above reviewed, you can write test cases.

Let me know if you need any help in this.

[chrk2205]

there are some test cases already present in the QuestionPlayerActivityTest.kt
Do I need to write test cases apart from them ??
@anandwana001
thanks

[chrk2205]

@anandwana001
for test cases should I include this??

• OnBackPressed and its respective cases
• toolbar title display

thanks

[anandwana001]

Yes, for both comments above

[ayush0402]

@anandwana001 Is this issue still needed to be fixed?

[BenHenning]

@ayush0402 yes. There's no dedicated test suite for questions currently. We have a few tests in QuestionPlayerActivityTest, but what we really need are QuestionPlayerFragmentLocalTest and QuestionPlayerFragmentTest akin to StateFragmentLocalTest and StateFragmentTest, respectively, that test various interaction & hint scenarios for questions.