diff --git a/test_case/some.go b/test_case/some.go
new file mode 100644
index 0000000..9b4cd6a
--- /dev/null
+++ b/test_case/some.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+	"fmt"
+)
+
+func Add(a, b int32) int32 {
+	return a + b
+}
+
+func main() {
+	fmt.Println("test: ", Add(1, 2))
+}
+
diff --git a/test_case/some_test.go b/test_case/some_test.go
new file mode 100644
index 0000000..59df9ed
--- /dev/null
+++ b/test_case/some_test.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestAdd(t *testing.T) {
+	a := int32(11)
+	b := int32(22)
+	expect := int32(33)
+	result := Add(a, b)
+	if expect != result {
+		t.Errorf("Error, expect: %d, actual: %d", expect, result)
+	}
+}