diff --git a/pkg/hashing_test.go b/pkg/hashing_test.go
new file mode 100644
index 0000000..7d91a34
--- /dev/null
+++ b/pkg/hashing_test.go
@@ -0,0 +1,26 @@
+package pkg_test
+
+import (
+	"github.com/nikkicoon/utility-go/pkg"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestCalculateHash(t *testing.T) {
+	res := pkg.CalculateHashBin("test")
+	assert.Equal(t, []byte{0xa9, 0x4a, 0x8f, 0xe5, 0xcc, 0xb1, 0x9b, 0xa6, 0x1c, 0x4c, 0x8, 0x73, 0xd3, 0x91, 0xe9, 0x87, 0x98, 0x2f, 0xbb, 0xd3}, res)
+}
+
+func BenchmarkCalculateHash(b *testing.B) {
+	for n := 0; n < 6000000; n++ {
+		pkg.CalculateHashBin("test")
+	}
+	b.Elapsed()
+}
+
+func BenchmarkCalculateHashGoRoutines(b *testing.B) {
+	for n := 0; n < 6000000; n++ {
+		go pkg.CalculateHashBin("test")
+	}
+	b.Elapsed()
+}