fix(fetch): post data for delete request (#10019)

docs/src/api/class-apirequestcontext.md

@@ -16,6 +16,9 @@ context cookies from the response. The method will automatically follow redirect
 ### param: APIRequestContext.delete.url = %%-fetch-param-url-%%
 ### option: APIRequestContext.delete.params = %%-fetch-option-params-%%
 ### option: APIRequestContext.delete.headers = %%-fetch-option-headers-%%
+### option: APIRequestContext.delete.data = %%-fetch-option-data-%%
+### option: APIRequestContext.delete.form = %%-fetch-option-form-%%
+### option: APIRequestContext.delete.multipart = %%-fetch-option-multipart-%%
 ### option: APIRequestContext.delete.timeout = %%-fetch-option-timeout-%%
 ### option: APIRequestContext.delete.failOnStatusCode = %%-fetch-option-failonstatuscode-%%
 ### option: APIRequestContext.delete.ignoreHTTPSErrors = %%-context-option-ignorehttpserrors-%%

packages/playwright-core/src/client/fetch.ts

@@ -84,7 +84,7 @@ export class FetchRequest extends ChannelOwner<channels.FetchRequestChannel, cha
     });
   }
 
-  async delete(url: string, options?: RequestWithoutBodyOptions): Promise<FetchResponse> {
+  async delete(url: string, options?: RequestWithBodyOptions): Promise<FetchResponse> {
     return this.fetch(url, {
       ...options,
       method: 'DELETE',

packages/playwright-core/src/server/fetch.ts

@@ -143,7 +143,7 @@ export abstract class FetchRequest extends SdkObject {
       }
 
       let postData;
-      if (['POST', 'PUT', 'PATCH'].includes(method))
+      if (['POST', 'PUT', 'PATCH', 'DELETE'].includes(method))
         postData = serializePostData(params, headers);
       else if (params.postData || params.jsonData || params.formData || params.multipartData)
         throw new Error(`Method ${method} does not accept post data`);

packages/playwright-core/types/types.d.ts

@@ -11747,11 +11747,25 @@ export interface APIRequestContext {
    * @param options
    */
   delete(url: string, options?: {
+    /**
+     * Allows to set post data of the request. If the data parameter is an object, it will be serialized to json string and
+     * `content-type` header will be set to `application/json` if not explicitly set. Otherwise the `content-type` header will
+     * be set to `application/octet-stream` if not explicitly set.
+     */
+    data?: string|Buffer|Serializable;
+
     /**
      * Whether to throw on response codes other than 2xx and 3xx. By default response object is returned for all status codes.
      */
     failOnStatusCode?: boolean;
 
+    /**
+     * Provides an object that will be serialized as html form using `application/x-www-form-urlencoded` encoding and sent as
+     * this request body. If this parameter is specified `content-type` header will be set to
+     * `application/x-www-form-urlencoded` unless explicitly provided.
+     */
+    form?: { [key: string]: string|number|boolean; };
+
     /**
      * Allows to set HTTP headers.
      */
@@ -11762,6 +11776,29 @@ export interface APIRequestContext {
      */
     ignoreHTTPSErrors?: boolean;
 
+    /**
+     * Provides an object that will be serialized as html form using `multipart/form-data` encoding and sent as this request
+     * body. If this parameter is specified `content-type` header will be set to `multipart/form-data` unless explicitly
+     * provided. File values can be passed either as [`fs.ReadStream`](https://nodejs.org/api/fs.html#fs_class_fs_readstream)
+     * or as file-like object containing file name, mime-type and its content.
+     */
+    multipart?: { [key: string]: string|number|boolean|ReadStream|{
+      /**
+       * File name
+       */
+      name: string;
+
+      /**
+       * File type
+       */
+      mimeType: string;
+
+      /**
+       * File content
+       */
+      buffer: Buffer;
+    }; };
+
     /**
      * Query parameters to be send with the URL.
      */

tests/browsercontext-fetch.spec.ts

@@ -413,18 +413,20 @@ it('should return error with wrong credentials', async ({ context, server }) =>
   expect(response2.status()).toBe(401);
 });
 
-it('should support post data', async ({ context, server }) => {
+for (const method of ['delete', 'patch', 'post', 'put']) {
+  it(`${method} should support post data`, async ({ context, server }) => {
     const [request, response] = await Promise.all([
       server.waitForRequest('/simple.json'),
-    context.request.post(`${server.PREFIX}/simple.json`, {
+      context.request[method](`${server.PREFIX}/simple.json`, {
         data: 'My request'
       })
     ]);
-  expect(request.method).toBe('POST');
+    expect(request.method).toBe(method.toUpperCase());
     expect((await request.postBody).toString()).toBe('My request');
     expect(response.status()).toBe(200);
     expect(request.url).toBe('/simple.json');
   });
+}
 
 it('should add default headers', async ({ context, server, page }) => {
   const [request] = await Promise.all([