diff --git a/src/fetch-data.test.ts b/src/fetch-data.test.ts
new file mode 100644
index 0000000..56bba41
--- /dev/null
+++ b/src/fetch-data.test.ts
@@ -0,0 +1,17 @@
+import { expect, test, vi } from "vitest";
+import { z } from "zod";
+import { fetchData } from "./fetch-data";
+
+const fetch = vi.fn();
+
+vi.stubGlobal("fetch", fetch);
+
+test("fetchData", async () => {
+	fetch.mockResolvedValueOnce({ json: () => ({ foo: "bar" }) });
+	expect(await fetchData(z.object({ foo: z.string() }), "https://example.com"))
+		.toMatchInlineSnapshot(`
+		{
+		  "foo": "bar",
+		}
+	`);
+});