Add unit test for discoverable shared applications flow

[asha15]

Purpose

$subject

Related PRs:

#390
Retrieve Discoverable Applications info for Sub-Org #392

Goals

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Approach

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User stories

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Release note

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Documentation

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Training

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Certification

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Marketing

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Automation tests

• Unit tests

  Code coverage information

• Integration tests

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Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes/no
• Ran FindSecurityBugs plugin and verified report? yes/no
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes/no

Samples

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Related PRs

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Migrations (if applicable)

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Test environment

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Learning

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 29.11%. Comparing base (c30fb79) to head (5dd4002).
Report is 5 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #412      +/-   ##
============================================
+ Coverage     29.01%   29.11%   +0.09%     
- Complexity      385      388       +3     
============================================
  Files            50       50              
  Lines          4146     4146              
  Branches        478      478              
============================================
+ Hits           1203     1207       +4     
+ Misses         2842     2838       -4     
  Partials        101      101              

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