Add read-only access to POST data for webRequest's onBeforeRequest

chrome/test/data/extensions/api_test/webrequest/test_post.js

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+function postData(formFile, includePostData) {
+  var formData = {
+      check: ["option_A"],
+      password: ["password"],
+      radio: ["Yes"],
+      select: ["one"],
+      text1: ["TEST_TEXT_1"],
+      text2: ["TEST_TEXT_2"],
+      text3: ["TEST_TEXT_3"],
+      txtarea: ["Text"]
+  };
+  return function submitForm() {
+    expect(
+      [  // events
+        { label: "a-onBeforeRequest",
+          event: "onBeforeRequest",
+          details: {
+            method: "GET",
+            type: "main_frame",
+            url: getURL("postData/" + formFile),
+            frameUrl: getURL("postData/" + formFile)
+          }
+        },
+        { label: "a-onResponseStarted",
+          event: "onResponseStarted",
+          details: {
+            fromCache: false,
+            method: "GET",
+            statusCode: 200,
+            statusLine: "HTTP/1.1 200 OK",
+            type: "main_frame",
+            url: getURL("postData/" + formFile)
+          }
+        },
+        { label: "a-onCompleted",
+          event: "onCompleted",
+          details: {
+            fromCache: false,
+            method: "GET",
+            statusCode: 200,
+            statusLine: "HTTP/1.1 200 OK",
+            type: "main_frame",
+            url: getURL("postData/" + formFile)
+          }
+        },
+        { label: "s-onBeforeRequest",
+          event: "onBeforeRequest",
+          details: {
+            method: "GET",
+            type: "script",
+            url: getURL("postData/submit.js"),
+            frameUrl: getURL("postData/" + formFile)
+          }
+        },
+        { label: "s-onResponseStarted",
+          event: "onResponseStarted",
+          details: {
+            fromCache: false,
+            method: "GET",
+            statusCode: 200,
+            statusLine: "HTTP/1.1 200 OK",
+            type: "script",
+            url: getURL("postData/submit.js")
+          }
+        },
+        { label: "s-onCompleted",
+          event: "onCompleted",
+          details: {
+            fromCache: false,
+            method: "GET",
+            statusCode: 200,
+            statusLine: "HTTP/1.1 200 OK",
+            type: "script",
+            url: getURL("postData/submit.js")
+          }
+        },
+        // b-onBeforeRequest with postData included...
+        (includePostData) ? { label: "b-onBeforeRequest",

[Matt Perry, 2012/07/23 21:19:01]

I think you could make this more succinct like so:
{
  details: {
    method: "POST",
    ...,
    postData: includePostData ? <postData> : undefined
  }
}

[vabr (Chromium), 2012/07/30 16:05:57]

I tried that but it did not work. Even if the expected details.postData is
undefined, such 'details' still has a property 'postData'. So the expected
details is different from the real details, which does not even have the
property 'postData'.

Luckily, the test was not quite right -- when no form data can be parsed, but
the request contains POST data, the postData field still has to be present, only
does not contain formData. I corrected this behaviour in the code, and made this
test shorter eventually.

+          event: "onBeforeRequest",
+          details: {
+            method: "POST",
+            type: "main_frame",
+            url: getURL("postData/nonExistingTarget.html"),
+            frameUrl: getURL("postData/nonExistingTarget.html"),
+            experimentalPostData: {
+              formData: formData
+            }
+          }
+        // or else b-onBeforeRequest without postData.
+        } : { label: "b-onBeforeRequest",
+          event: "onBeforeRequest",
+          details: {
+            method: "POST",
+            type: "main_frame",
+            url: getURL("postData/nonExistingTarget.html"),
+            frameUrl: getURL("postData/nonExistingTarget.html"),
+          }
+        },
+        { label: "b-onErrorOccurred",
+          event: "onErrorOccurred",
+          details: {
+            error: "net::ERR_FILE_NOT_FOUND",
+            fromCache: false,
+            method: "POST",
+            type: "main_frame",
+            url: getURL("postData/nonExistingTarget.html")
+          }
+        }
+      ],
+      [  // event order
+        ["a-onBeforeRequest", "a-onResponseStarted", "a-onCompleted",
+        "s-onBeforeRequest", "s-onResponseStarted", "s-onCompleted",
+        "b-onBeforeRequest", "b-onErrorOccurred"]
+      ],
+      {urls: ["<all_urls>"]},  // filter
+      ["requestPostData"]);
+    navigateAndWait(getURL("postData/" + formFile));
+    close();
+  }
+}
+
+runTests([
+  // Navigates to a page with a form and submits it.
+  postData('no-enctype.html', true),
+  postData('urlencoded.html', true),
+  postData('multipart.html', true),
+  postData('plaintext.html', false),
+]);