func (e *ErrorChannel) ReceiveError() error {
	select {
	case err := <-e.errCh:
		return err
	default:
		return nil
	}
}

// NewErrorChannel returns a new ErrorChannel.
func NewErrorChannel() *ErrorChannel {
	return &ErrorChannel{
		errCh: make(chan error, 1),
	}

limitations under the License.
*/

package parallelize

import (
	"context"
	"errors"
	"testing"
)

func TestErrorChannel(t *testing.T) {
	errCh := NewErrorChannel()

	if actualErr := errCh.ReceiveError(); actualErr != nil {
		t.Errorf("expect nil from err channel, but got %v", actualErr)
	}

	err := errors.New("unknown error")
	errCh.SendError(err)