Refactor tests into separate functions that expect errors or not #123
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For clarity, it is useful to not mix in the same test function cases for which it is expected an error and cases for which it is not.
Separating these cases into two different test functions makes the code cleaner and avoids the unnecessary use of more complicated
ifs
inside the body of the test function. Also, it makes it easier to add new test cases in the future as it is simpler to realize where they belong to in the test file.Then, this PR comes to follow this guideline for two important test functions inside
expression_test.go
andplanner_test.go
.