Fix tests

packages/openapi-fetch/package.json

@@ -55,7 +55,7 @@
     "lint": "pnpm run \"/^lint:/\"",
     "lint:js": "eslint \"{src,test}/**/*.{js,ts}\"",
     "lint:prettier": "prettier --check \"{src,test}/**/*\"",
-    "generate-types": "cd ../openapi-typescript && pnpm run build && cd ../openapi-fetch ../openapi-typescript/bin/cli.js ./test/fixtures/api.yaml -o ./test/fixtures/v7-beta.test.ts && npx openapi-typescript ./test/fixtures/api.yaml -o ./test/fixtures/api.d.ts",
+    "generate-types": "cd ../openapi-typescript && pnpm run build && cd ../openapi-fetch && ../openapi-typescript/bin/cli.js ./test/fixtures/api.yaml -o ./test/fixtures/v7-beta.d.ts && npx openapi-typescript ./test/fixtures/api.yaml -o ./test/fixtures/api.d.ts",
     "pretest": "pnpm run generate-types",
     "test": "pnpm run \"/^test:/\"",
     "test:js": "vitest run",

packages/openapi-fetch/src/index.js

@@ -56,10 +56,9 @@ export default function createClient(clientOptions) {
       requestInit,
     );
     // remove `Content-Type` if serialized body is FormData; browser will correctly set Content-Type & boundary expression
-    if (request.body instanceof FormData) {
+    if (requestInit.body instanceof FormData) {
       request.headers.delete("Content-Type");
     }
-
     // middleware (request)
     const mergedOptions = {
       baseUrl,

packages/openapi-fetch/test/fixtures/v7-beta.d.ts

@@ -645,6 +645,10 @@ export interface components {
             email: string;
             age?: number;
             avatar?: string;
+            /** Format: date */
+            created_at: number;
+            /** Format: date */
+            updated_at: number;
         };
     };
     responses: {

packages/openapi-fetch/test/index.test.ts

@@ -522,6 +522,8 @@ describe("client", () => {
       });
 
       it("can modify response", async () => {
+        const toUnix = (date: string) => new Date(date).getTime();
+
         const rawBody = {
           email: "[email protected]",
           created_at: "2024-01-01T00:00:00Z",
@@ -535,10 +537,11 @@ describe("client", () => {
 
         const client = createClient<paths>();
         client.use({
+          // convert date string to unix time
           async onResponse(res) {
             const body = await res.json();
-            body.created_at = new Date(body.created_at).getTime();
-            body.updated_at = new Date(body.updated_at).getTime();
+            body.created_at = toUnix(body.created_at);
+            body.updated_at = toUnix(body.updated_at);
             const headers = new Headers(res.headers);
             headers.set("middleware", "value");
             return new Response(JSON.stringify(body), {
@@ -552,8 +555,8 @@ describe("client", () => {
         const { data, response } = await client.GET("/self");
 
         // assert body was modified
-        expect(data?.created_at).toBe(new Date(rawBody.created_at).getTime());
-        expect(data?.updated_at).toBe(new Date(rawBody.updated_at).getTime());
+        expect(data?.created_at).toBe(toUnix(rawBody.created_at));
+        expect(data?.updated_at).toBe(toUnix(rawBody.updated_at));
         // assert rest of body was preserved
         expect(data?.email).toBe(rawBody.email);
         // assert status changed
@@ -694,6 +697,8 @@ describe("client", () => {
       });
 
       it("can be ejected", async () => {
+        mockFetchOnce({ status: 200, body: "{}" });
+
         let called = false;
         const errorMiddleware = {
           onRequest() {
@@ -754,10 +759,11 @@ describe("client", () => {
 
       // expect post_id to be encoded properly
       const req = fetchMocker.mock.calls[0][0];
-      expect(req.body).toBeInstanceOf(FormData);
+      // note: this is FormData, but Node.js doesn’t handle new Request() properly with formData bodies. So this is only in tests.
+      expect(req.body).toBeInstanceOf(Buffer);
 
       // TODO: `vitest-fetch-mock` does not add the boundary to the Content-Type header like browsers do, so we expect the header to be null instead
-      expect((req.headers as Headers).get("Content-Type")).toBeNull();
+      expect(req.headers.get("Content-Type")).toBeNull();
     });
   });
 

packages/openapi-fetch/test/v7-beta.test.ts

@@ -1,7 +1,10 @@
 import { afterEach, beforeAll, describe, expect, it, vi } from "vitest";
 // @ts-expect-error
 import createFetchMock from "vitest-fetch-mock";
-import createClient, { type Middleware } from "../src/index.js";
+import createClient, {
+  type MiddlewareRequest,
+  type Middleware,
+} from "../src/index.js";
 import type { paths } from "./fixtures/v7-beta.js";
 
 // Note
@@ -528,6 +531,8 @@ describe("client", () => {
       });
 
       it("can modify response", async () => {
+        const toUnix = (date: string) => new Date(date).getTime();
+
         const rawBody = {
           email: "[email protected]",
           created_at: "2024-01-01T00:00:00Z",
@@ -541,10 +546,11 @@ describe("client", () => {
 
         const client = createClient<paths>();
         client.use({
+          // convert date string to unix time
           async onResponse(res) {
             const body = await res.json();
-            body.created_at = new Date(body.created_at).getTime();
-            body.updated_at = new Date(body.updated_at).getTime();
+            body.created_at = toUnix(body.created_at);
+            body.updated_at = toUnix(body.updated_at);
             const headers = new Headers(res.headers);
             headers.set("middleware", "value");
             return new Response(JSON.stringify(body), {
@@ -558,8 +564,8 @@ describe("client", () => {
         const { data, response } = await client.GET("/self");
 
         // assert body was modified
-        expect(data?.created_at).toBe(new Date(rawBody.created_at).getTime());
-        expect(data?.updated_at).toBe(new Date(rawBody.updated_at).getTime());
+        expect(data?.created_at).toBe(toUnix(rawBody.created_at));
+        expect(data?.updated_at).toBe(toUnix(rawBody.updated_at));
         // assert rest of body was preserved
         expect(data?.email).toBe(rawBody.email);
         // assert status changed
@@ -700,6 +706,8 @@ describe("client", () => {
       });
 
       it("can be ejected", async () => {
+        mockFetchOnce({ status: 200, body: "{}" });
+
         let called = false;
         const errorMiddleware = {
           onRequest() {
@@ -759,7 +767,8 @@ describe("client", () => {
 
       // expect post_id to be encoded properly
       const req = fetchMocker.mock.calls[0][0];
-      expect(req.body).toBeInstanceOf(FormData);
+      // note: this is FormData, but Node.js doesn’t handle new Request() properly with formData bodies. So this is only in tests.
+      expect(req.body).toBeInstanceOf(Buffer);
 
       // TODO: `vitest-fetch-mock` does not add the boundary to the Content-Type header like browsers do, so we expect the header to be null instead
       expect((req.headers as Headers).get("Content-Type")).toBeNull();