[android_webview] Use a MotionEvent to trigger ShouldInterceptRequest tests.

android_webview/javatests/src/org/chromium/android_webview/test/AwContentsClientShouldInterceptRequestTest.java

 // Copyright 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.
 
 package org.chromium.android_webview.test;
 
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.util.Pair;
 
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.AwContentsClient.ShouldInterceptRequestParams;
 import org.chromium.android_webview.AwWebResourceResponse;
+import org.chromium.android_webview.test.util.AwTestTouchUtils;
 import org.chromium.android_webview.test.util.CommonResources;
 import org.chromium.android_webview.test.util.JSUtils;
 import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.TestFileUtil;
 import org.chromium.content.browser.test.util.CallbackHelper;
 import org.chromium.content.browser.test.util.TestCallbackHelperContainer.OnReceivedErrorHelper;
 import org.chromium.net.test.util.TestWebServer;
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
@@ skipping 206 matching lines @@
         final String pageWithLinkUrl = addPageToTestServer(mWebServer, "/page_with_link.html",
                 CommonResources.makeHtmlPageWithSimpleLinkTo(aboutPageUrl));
         enableJavaScriptOnUiThread(mAwContents);
 
         int callCount = mShouldInterceptRequestHelper.getCallCount();
         loadUrlAsync(mAwContents, pageWithLinkUrl);
         mShouldInterceptRequestHelper.waitForCallback(callCount);
         assertEquals(false,
                 mShouldInterceptRequestHelper.getParamsForUrl(pageWithLinkUrl).hasUserGesture);
 
+        // TODO(mkosiba): Remove this once we have a real API to wait for the page to load and
+        // display.
+        // http://crbug.com/364612
+        pollOnUiThread(new Callable<Boolean>() {
+            @Override
+            public Boolean call() throws Exception {
+                Bitmap bitmap = Bitmap.createBitmap(2, 2, Bitmap.Config.ARGB_8888);
+                Canvas canvas = new Canvas(bitmap);
+                canvas.translate(-mTestContainerView.getWidth() / 2,
+                        -mTestContainerView.getHeight() / 2);
+                mAwContents.onDraw(canvas);
+                return bitmap.getPixel(0, 0) == Color.BLUE;

[boliu, 2014/09/08 16:02:55]

That looks *super* brittle. What if text rendering changes and you didn't hit a
blue pixel? What if the link highlight color changes?

How about using a properly sized bitmap, and just check it's not empty?

[mkosiba (inactive), 2014/09/08 16:54:36]

This is not checking the text to be blue. The "link" is a 100%-by-100% clickable
blue div (run the test) so it's less brittle than you think.

[boliu, 2014/09/08 17:02:10]

Meh, badly named function then.

side note, why embed an <img> tag that's blue rather than making the <a> tag
itself blue? some test probably depend on it, but just weird...

+            }
+        });
         callCount = mShouldInterceptRequestHelper.getCallCount();
-        JSUtils.clickOnLinkUsingJs(this, mAwContents,
-                mContentsClient.getOnEvaluateJavaScriptResultHelper(), "link");
+        AwTestTouchUtils.simulateTouchCenterOfView(mTestContainerView);
         mShouldInterceptRequestHelper.waitForCallback(callCount);
         assertEquals(true,
                 mShouldInterceptRequestHelper.getParamsForUrl(aboutPageUrl).hasUserGesture);
     }
 
     @SmallTest
     @Feature({"AndroidWebView"})
     public void testCalledWithCorrectHeadersParam() throws Throwable {
         final String headerName = "X-Test-Header-Name";
         final String headerValue = "TestHeaderValue";
@@ skipping 528 matching lines @@
                 getInstrumentation().getTargetContext(), contentResourceName);
         assertEquals(1, contentRequestCount);
     }
 
     @SmallTest
     @Feature({"AndroidWebView"})
     public void testCalledForNonexistentContentUrl() throws Throwable {
         calledForUrlTemplate("content://org.chromium.webview.NoSuchProvider/foo");
     }
 }