diff --git a/go/testing/slice/slice_test.go b/go/testing/slice/slice_test.go
new file mode 100644
index 0000000..f5b0a89
--- /dev/null
+++ b/go/testing/slice/slice_test.go
@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func appendSlice(s []int, n int) {
+	s = append(s, n)
+	fmt.Printf("len=%d,cap=%d\n", len(s), cap(s))
+}
+func TestSliceAppend(t *testing.T) {
+	s1 := make([]int, 5)
+	appendSlice(s1, 10)
+	if len(s1) != 5 || cap(s1) != 5 {
+		t.Errorf("Expected len=5, cap=5; got len=%d, cap=%d", len(s1), cap(s1))
+	}
+}