Refactor: Unit Test Syntax Errors and Failures

[NiranjanNlc]

Summary:

The unit tests in the Android project contain syntax errors, due to this , we cannot run any test and add the new one .
We cannot execute ./gradlew check while raising PR too .

Steps to reproduce:

1. Navigate to the test directory
2. Open any of the test files .
3. Attempt to run any unit test

Expected behaviour:

No syntax error and unit test running

Observed behaviour:

Encountered the syntax error on the multiple files . Felt the necessity to rewrite them .
Device and Android version:
Android studio

Screenshots:

[NiranjanNlc]

@therajanmaurya @PratyushSingh07
i would like to work on this .