Cover the case when `Run()` body is composed of multiple statements

[dreig]

There are a few exercises that have tests with subtests and where the body of the Run() consists of multiple statements. The extracted test then would only contain the first of these statements. Below is a screenshot-example from the Cars Assemble exercise.

References #78

[coveralls]

Pull Request Test Coverage Report for Build 3293013832

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 77.445%

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Totals
Change from base Build 3184568547:	0.0%
Covered Lines:	388
Relevant Lines:	501

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💛 - Coveralls