diff --git a/packages/snap-toolbox/src/cookies/cookies.test.ts b/packages/snap-toolbox/src/cookies/cookies.test.ts
new file mode 100644
index 000000000..72e1f4f9f
--- /dev/null
+++ b/packages/snap-toolbox/src/cookies/cookies.test.ts
@@ -0,0 +1,49 @@
+import { cookies } from './cookies';
+
+describe('cookies', () => {
+	afterEach(() => {
+		// clear all cookies
+		document.cookie.split(';').forEach(function (c) {
+			document.cookie = c.replace(/^ +/, '').replace(/=.*/, '=;expires=' + new Date().toUTCString() + ';path=/');
+		});
+	});
+
+	it('should set and get a cookie', () => {
+		cookies.set('testCookie', 'testValue');
+		expect(cookies.get('testCookie')).toBe('testValue');
+	});
+
+	it('should handle special characters in cookie values', () => {
+		const specialValue = 'test=value with spaces&special@chars';
+		cookies.set('testCookie', specialValue);
+		expect(cookies.get('testCookie')).toBe(specialValue);
+	});
+
+	it('should unset cookie', () => {
+		cookies.set('testCookie', 'testValue');
+		cookies.unset('testCookie');
+		expect(cookies.get('testCookie')).toBe('');
+	});
+
+	it('should unset cookie with domain', () => {
+		cookies.set('testCookie', 'testValue', undefined, undefined, 'example.com');
+		cookies.unset('testCookie', 'example.com');
+		expect(cookies.get('testCookie')).toBe('');
+	});
+
+	it('should return empty string for non-existent cookie', () => {
+		expect(cookies.get('nonExistentCookie')).toBe('');
+	});
+
+	it('should properly URI encode values when setting cookies', () => {
+		const valueWithSpecialChars = '?key=value&something=other;stuff=here';
+		cookies.set('testCookie', valueWithSpecialChars);
+		expect(document.cookie).toContain(encodeURIComponent(valueWithSpecialChars));
+	});
+
+	it('should properly URI decode values when getting cookies', () => {
+		const valueWithSpecialChars = '?key=value&something=other;stuff=here';
+		document.cookie = `testCookie=${encodeURIComponent(valueWithSpecialChars)}`;
+		expect(cookies.get('testCookie')).toBe(valueWithSpecialChars);
+	});
+});