Function TestIs113

error_1_13_test.go:11–54

This test should work only for go 1.13 and latter

(t *testing.T)

// This test should work only for go 1.13 and latter
func TestIs113(t *testing.T) {
	custErr := errorWithCustomIs{
		Key: "TestForFun",
		Err: io.EOF,
	}

	shouldMatch := errorWithCustomIs{
		Key: "TestForFun",
	}

	shouldNotMatch := errorWithCustomIs{Key: "notOk"}

	if !Is(custErr, shouldMatch) {
		t.Errorf("custErr is not a TestForFun customError")
	}

	if Is(custErr, shouldNotMatch) {
		t.Errorf("custErr is a notOk customError")
	}

	if !Is(custErr, New(shouldMatch)) {
		t.Errorf("custErr is not a New(TestForFun customError)")
	}

	if Is(custErr, New(shouldNotMatch)) {
		t.Errorf("custErr is a New(notOk customError)")
	}

	if !Is(New(custErr), shouldMatch) {
		t.Errorf("New(custErr) is not a TestForFun customError")
	}

	if Is(New(custErr), shouldNotMatch) {
		t.Errorf("New(custErr) is a notOk customError")
	}

	if !Is(New(custErr), New(shouldMatch)) {
		t.Errorf("New(custErr) is not a New(TestForFun customError)")
	}

	if Is(New(custErr), New(shouldNotMatch)) {
		t.Errorf("New(custErr) is a New(notOk customError)")
	}
}

type errorWithCustomIs struct {
	Key string