Initial

1 files changed, 57 insertions, 0 deletions

diff --git a/channels/fanin_test.go b/channels/fanin_test.go
new file mode 100644
index 0000000..dd0c889
--- /dev/null
+++ b/channels/fanin_test.go
@@ -0,0 +1,57 @@
+package channels
+
+import (
+	"reflect"
+	"sort"
+	"testing"
+)
+
+func TestFanIn(t *testing.T) {
+	type args struct {
+		chans [][]int
+	}
+	tests := []struct {
+		name string
+		args args
+		want []int
+	}{
+		{
+			name: "test fanin",
+			args: args{
+				chans: [][]int{
+					{1, 2, 3},
+					{4, 5, 6},
+					{7, 8, 9},
+				},
+			},
+			want: []int{1, 2, 3, 4, 5, 6, 7, 8, 9},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := []int{}
+			chans := make([]chan int, len(tt.args.chans))
+			for i, v := range tt.args.chans {
+				func(i int, v []int) {
+					chans[i] = make(chan int, len(v))
+					go func(i int, v []int) {
+						for _, v2 := range v {
+							chans[i] <- v2
+						}
+						close(chans[i])
+					}(i, v)
+				}(i, v)
+			}
+
+			ch := FanIn(chans...)
+
+			for o := range ch {
+				got = append(got, o)
+			}
+			sort.Ints(got)
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("FanIn() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}