Add unit tests for net helper

packages/inngest/src/helpers/net.test.ts

@@ -0,0 +1,65 @@
+import fetchMock from "jest-fetch-mock";
+import { fetchWithAuthFallback } from "./net";
+
+describe("fetchWithAuthFallback", () => {
+  beforeEach(() => {
+    fetchMock.resetMocks();
+  });
+
+  it("should make a fetch request with the provided auth token", async () => {
+    fetchMock.mockResponseOnce(JSON.stringify({ data: "12345" }));
+
+    const response = await fetchWithAuthFallback({
+      authToken: "testToken",
+      fetch: fetchMock as typeof fetch,
+      url: "https://example.com",
+    });
+
+    expect(fetchMock).toHaveBeenCalledWith("https://example.com", {
+      headers: {
+        Authorization: "Bearer testToken",
+      },
+    });
+    expect(response.status).toEqual(200);
+  });
+
+  it("should retry with the fallback token if the first request fails with 401", async () => {
+    fetchMock.mockResponses(
+      [JSON.stringify({}), { status: 401 }],
+      [JSON.stringify({ data: "12345" }), { status: 200 }]
+    );
+
+    const response = await fetchWithAuthFallback({
+      authToken: "testToken",
+      authTokenFallback: "fallbackToken",
+      fetch: fetchMock as typeof fetch,
+      url: "https://example.com",
+    });
+
+    expect(fetchMock).toHaveBeenNthCalledWith(1, "https://example.com", {
+      headers: {
+        Authorization: "Bearer testToken",
+      },
+    });
+    expect(fetchMock).toHaveBeenNthCalledWith(2, "https://example.com", {
+      headers: {
+        Authorization: "Bearer fallbackToken",
+      },
+    });
+    expect(response.status).toEqual(200);
+  });
+
+  it("should not retry with the fallback token if the first request fails with a non-401/403 status", async () => {
+    fetchMock.mockResponseOnce(JSON.stringify({}), { status: 500 });
+
+    const response = await fetchWithAuthFallback({
+      authToken: "testToken",
+      authTokenFallback: "fallbackToken",
+      fetch: fetchMock as typeof fetch,
+      url: "https://example.com",
+    });
+
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    expect(response.status).toEqual(500);
+  });
+});