CS/QA: fix incorrect parameter order in test assertions

[jrfnl]

Summary

This PR can be summarized in the following changelog entry:

• Test improvements

Relevant technical choices:

Fix incorrect parameter order in test assertions, which makes debugging harder.

The first parameter for assertSame() is the $expected value, the second should be the actual value, like retrieved via a function call.

Test instructions

This PR can be tested by following these steps:

• N/A If the tests pass, we're good.

[coveralls]

Pull Request Test Coverage Report for Build 4855992070

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 52.459%

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Totals
Change from base Build 4855928599:	0.0%
Covered Lines:	128
Relevant Lines:	244

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💛 - Coveralls