It blocks in a for loop

[alexd...@gmail.com]

Can Ginkgo It blocks be put inside a for loop? I have a table of test cases (a slice of structs) which I'd like to iterate through:

var _ = Describe("...", func() {

  var testcases = []struct{
    startState string
    endState string
  }{
    {"start", "stop"},
    {"stop", "start"},
  }

  for i := range testcases {
    tc := testcases[i]

    It("...", func() {
      // Run test case
    })
  }
})

This compiles and runs but it runs just the last test case multiple times. Is this expected behaviour?

I can put the for loop inside the It block and it works as expected but then I can't use BeforeEach (since there's only one It block) and it can be difficult to work out which test case is failing.

[Onsi Fakhouri]

Yep this should totally work. Have done it on numerous occasions where table driven tests made sense.  This is equivalent to unrolling the for loop and manually typing in the N Its that the for loop would generate.

Are you sure you're referencing 'tc' in your It closure and not 'i'?  Because it's a closure you'll get the last value of 'i'

If you point me at some code I might be able to help some more.

Onsi

--
https://github.com/onsi/ginkgo
https://github.com/onsi/gomega
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[Thorsten von Eicken]

I had a reference to 'i' that I overlooked. Grrr.

[Friedrich Große]

Maybe a little late but for future generations of gophers I would like to add the link to Table Driven Tests here :)