errors: feature request: nil-safe compares #6965
Description
Frequently when writing tests, we end up comparing two error values, on of which may be
nil. It would be useful to have an errors.Equal() function, which can execute a
nil-safe comparison. This is the function, which we've been copy-and-pasting around our
test packages:
func Equal(a, b error) bool {
if a == nil {
return b == nil
}
return b != nil && a.Error() == b.Error()
}