Testing

• Go has a lightweight test framework composed of the go test command and the testing package.
• Write a test by creating a file with a name ending in _test.go
  • Write functions named TestXXX with signature func (t *testing.T)
• The test framework runs each such function
  • if the function calls a failure function such as t.Error or t.Fail, the test is considered to have failed.

func TestAverage(t *testing.T) {
    numbers := []float64{
        1, 2, 3, 4, 5, 6, 7,
    }
    addEmUp := averageEmUp(numbers)
    if addEmUp != 4 {
        t.Error("Expected 4 but received ", addEmUp)
    }
}

Here is an example test function called TestAverage notice that it takes the signature func (t *testing.T)

Make sure to append _test.go to the end of the test so that go finds the test.

In Go you assert what should not occur which is a break from the xunit style of assert.equal