diff --git a/api/k8sdeps/kunstruct/hasher_test.go b/api/k8sdeps/kunstruct/hasher_test.go
new file mode 100644
index 000000000..02953f970
--- /dev/null
+++ b/api/k8sdeps/kunstruct/hasher_test.go
@@ -0,0 +1,34 @@
+package kunstruct
+
+import (
+	"testing"
+)
+
+func TestHasher(t *testing.T) {
+	input := `
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: foo
+data:
+  one: ""
+binaryData:
+  two: ""
+`
+	expect := "698h7c7t9m"
+
+	factory := NewKunstructuredFactoryImpl()
+	k, err := factory.SliceFromBytes([]byte(input))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	hasher := NewKustHash()
+	result, err := hasher.Hash(k[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result != expect {
+		t.Fatalf("expect %s but got %s", expect, result)
+	}
+}