Looks like there is a small issue in tests in Lua.
Passed in and expected arguments in assert.are.same(a, b) are swapped, so the outout is a bit confusing.

should count all vowels
Expected objects to be the same.
Passed in:
(number) 5
Expected:
(string) 'some wrong answer'
Completed in 1.0421ms

Of course, it is possible to figure out, but still.

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