feat: add fx.ParallelErr (#4107)

core/fx/parallel_test.go

@@ -1,6 +1,7 @@
 package fx
 
 import (
+	"errors"
 	"sync/atomic"
 	"testing"
 	"time"
@@ -22,3 +23,54 @@ func TestParallel(t *testing.T) {
 	})
 	assert.Equal(t, int32(6), count)
 }
+
+func TestParallelErr(t *testing.T) {
+	var count int32
+	err := ParallelErr(
+		func() error {
+			time.Sleep(time.Millisecond * 100)
+			atomic.AddInt32(&count, 1)
+			return errors.New("failed to exec #1")
+		},
+		func() error {
+			time.Sleep(time.Millisecond * 100)
+			atomic.AddInt32(&count, 2)
+			return errors.New("failed to exec #2")
+
+		},
+		func() error {
+			time.Sleep(time.Millisecond * 100)
+			atomic.AddInt32(&count, 3)
+			return nil
+		},
+	)
+
+	assert.Equal(t, int32(6), count)
+	assert.Error(t, err)
+	assert.ErrorContains(t, err, "failed to exec #1", "failed to exec #2")
+}
+
+func TestParallelErrErrorNil(t *testing.T) {
+	var count int32
+	err := ParallelErr(
+		func() error {
+			time.Sleep(time.Millisecond * 100)
+			atomic.AddInt32(&count, 1)
+			return nil
+		},
+		func() error {
+			time.Sleep(time.Millisecond * 100)
+			atomic.AddInt32(&count, 2)
+			return nil
+
+		},
+		func() error {
+			time.Sleep(time.Millisecond * 100)
+			atomic.AddInt32(&count, 3)
+			return nil
+		},
+	)
+
+	assert.Equal(t, int32(6), count)
+	assert.NoError(t, err)
+}