I'm using helper functions in my test, for example this one:
// assert fails the test if the condition is false.
func assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
if !condition {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d: "+msg+"\033[39m\n\n", append([]interface{}{
filepath.Base(file), line}, v...)...)
tb.FailNow()
}
}
I hoped that I could improve these helpers with the new (*B).Helper() and
(*T).Helper() methods:
// assert fails the test if the condition is false.
func assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
tb.Helper()
if !condition {
tb.Fatalf("\033[31m "+msg+"\033[39m\n\n", v...)
}
}
I expected Go to print the file and line number of the failing test,
followed by a red message. Instead, the file and line number is of form "
<autogenerated>:1:"
It works if I replace tb testing.TB with t testing.T. Is there a reason the
new Helper() method is part of the TB interface but not working as
expected? Or could it be a bug?
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