Separate the parameterized tests for questionnaire view model

[jingtang10]

Description
At the moment all test cases in QuestionnaireViewModel.kt are being run 4 times with the permutations of providing the questionnaire and the questionnaire response using string or URL.

This is highly inefficient and unnecessary. In fact, we only need to have a few test cases to check the mechanism to load the questionnaire and questionnaire response is working with both string and URL. The test cases regarding other parts of the view model logic shouldn't need to be run 4 times each.

Alternative(s) considered
NA

Type
Testing

Screenshots (if applicable)

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