add fx.Split

core/fx/fn_test.go

@@ -283,6 +283,22 @@ func TestSort(t *testing.T) {
 	})
 }
 
+func TestSplit(t *testing.T) {
+	assert.Panics(t, func() {
+		Just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).Split(0).Done()
+	})
+	var chunks [][]interface{}
+	Just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).Split(4).ForEach(func(item interface{}) {
+		chunk := item.([]interface{})
+		chunks = append(chunks, chunk)
+	})
+	assert.EqualValues(t, [][]interface{}{
+		{1, 2, 3, 4},
+		{5, 6, 7, 8},
+		{9, 10},
+	}, chunks)
+}
+
 func TestTail(t *testing.T) {
 	var result int
 	Just(1, 2, 3, 4).Tail(2).Reduce(func(pipe <-chan interface{}) (interface{}, error) {