diff --git a/spec/utils.spec.js b/spec/utils.spec.js
new file mode 100644
index 0000000..095aba5
--- /dev/null
+++ b/spec/utils.spec.js
@@ -0,0 +1,10 @@
+import { booleanParser } from '../src/utils.js';
+
+describe('utils', () => {
+  it('booleanParser', () => {
+    expect(booleanParser(true)).toBe(true);
+    expect(booleanParser('true')).toBe(true);
+    expect(booleanParser('1')).toBe(true);
+    expect(booleanParser('false')).toBe(false);
+  });
+});