Function ErrorAs

internal/testify/assert/assertions.go:2063–2077

ErrorAs asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value. This is a wrapper for errors.As.

(t TestingT, err error, target interface{}, msgAndArgs ...interface{})

// ErrorAs asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value.
// This is a wrapper for errors.As.
func ErrorAs(t TestingT, err error, target interface{}, msgAndArgs ...interface{}) bool {
	if h, ok := t.(tHelper); ok {
		h.Helper()
	}
	if errors.As(err, target) {
		return true
	}

	chain := buildErrorChainString(err)

	return Fail(t, fmt.Sprintf("Should be in error chain:\n"+
		"expected: %q\n"+
		"in chain: %s", target, chain,
	), msgAndArgs...)
}

func buildErrorChainString(err error) string {
	if err == nil {