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multi_test.go
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multi_test.go
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//go:build go1.20
package errors_test
import (
stderrors "errors"
"io"
"testing"
"github.com/go-faster/errors"
)
var ErrValue = errors.New("value error")
type Error struct{}
func (*Error) Error() string {
return "typed error"
}
// Compatibility test for multi-errors generated by [errors.Join]
func TestMulti(t *testing.T) {
typedErr := new(Error)
wrappedErr := errors.Wrap(io.ErrClosedPipe, "wrapped error")
errs := stderrors.Join(ErrValue, typedErr, wrappedErr)
// Test Is.
if !errors.Is(errs, ErrValue) {
t.Errorf("Expected Is(%+v, %+v) == true", errs, ErrValue)
}
// Test As.
if target := new(*Error); !errors.As(errs, target) {
t.Errorf("Expected As(%+v, %T) == true", errs, target)
}
// Test wrapping.
if !errors.Is(errs, io.ErrClosedPipe) {
t.Errorf("Expected Is(%+v, %+v) == true", errs, ErrValue)
}
}