[tests/jenkins] Add test for get_identities and get_field_author methods

[VSevagen]

This commits adds the tests to check for the return value of both get_identities and get_field_author

Signed-off-by: sevagenv [email protected]

[coveralls]

Pull Request Test Coverage Report for Build 753119299

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 82.291%

---

Totals
Change from base Build 725267991:	0.03%
Covered Lines:	8615
Relevant Lines:	10469

---

💛 - Coveralls