[android_webview] Use a MotionEvent to trigger ShouldInterceptRequest tests.

This updates the test case to use a synthesized single tap gesture
to follow the link instead of JavaScript.

BUG=408426
TEST=AndroidWebViewTest

Review URL: https://codereview.chromium.org/552813002

Cr-Commit-Position: refs/heads/master@{#293926}

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

@@ -4,12 +4,16 @@
 
 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;
@@ -236,9 +240,25 @@ public class AwContentsClientShouldInterceptRequestTest extends AwTestBase {
         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
+        //
+        // The code here is waiting for the "link" (which is a full-screen blue div) to appear on
+        // screen.
+        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(-(float)mTestContainerView.getWidth() / 2,
+                        -(float)mTestContainerView.getHeight() / 2);
+                mAwContents.onDraw(canvas);
+                return bitmap.getPixel(0, 0) == Color.BLUE;
+            }
+        });
         callCount = mShouldInterceptRequestHelper.getCallCount();
-        JSUtils.clickOnLinkUsingJs(this, mAwContents,
-                mContentsClient.getOnEvaluateJavaScriptResultHelper(), "link");
+        AwTestTouchUtils.simulateTouchCenterOfView(mTestContainerView);
         mShouldInterceptRequestHelper.waitForCallback(callCount);
         assertEquals(true,
                 mShouldInterceptRequestHelper.getParamsForUrl(aboutPageUrl).hasUserGesture);

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

@@ -6,14 +6,13 @@ package org.chromium.android_webview.test;
 
 import android.os.Handler;
 import android.os.Message;
-import android.os.SystemClock;
 import android.test.suitebuilder.annotation.LargeTest;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.view.KeyEvent;
-import android.view.MotionEvent;
 import android.webkit.WebView.HitTestResult;
 
 import org.chromium.android_webview.AwContents;
+import org.chromium.android_webview.test.util.AwTestTouchUtils;
 import org.chromium.android_webview.test.util.CommonResources;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.test.util.Feature;
@@ -62,23 +61,6 @@ public class WebKitHitTestTest extends AwTestBase {
                 href + "\" " + "onclick=\"return false;\">" + anchorText + "</a>");
     }
 
-    private void simulateTouchCenterOfWebViewOnUiThread() throws Throwable {
-        runTestOnUiThread(new Runnable() {
-            @Override
-            public void run() {
-                long eventTime = SystemClock.uptimeMillis();
-                float x = (float) (mTestView.getRight() - mTestView.getLeft()) / 2;
-                float y = (float) (mTestView.getBottom() - mTestView.getTop()) / 2;
-                mAwContents.onTouchEvent(MotionEvent.obtain(
-                        eventTime, eventTime, MotionEvent.ACTION_DOWN,
-                        x, y, 0));
-                mAwContents.onTouchEvent(MotionEvent.obtain(
-                        eventTime, eventTime, MotionEvent.ACTION_UP,
-                        x, y, 0));
-            }
-        });
-    }
-
     private void simulateTabDownUpOnUiThread() throws Throwable {
         runTestOnUiThread(new Runnable() {
             @Override
@@ -95,7 +77,7 @@ public class WebKitHitTestTest extends AwTestBase {
         // Send a touch click event if byTouch is true. Otherwise, send a TAB
         // key event to change the focused element of the page.
         if (byTouch) {
-            simulateTouchCenterOfWebViewOnUiThread();
+            AwTestTouchUtils.simulateTouchCenterOfView(mTestView);
         } else {
             simulateTabDownUpOnUiThread();
         }
@@ -334,7 +316,7 @@ public class WebKitHitTestTest extends AwTestBase {
         String page = CommonResources.makeHtmlPageFrom("",
                 "<img class=\"full_view\" src=\"" + relImageSrc + "\">");
         setServerResponseAndLoad(page);
-        simulateTouchCenterOfWebViewOnUiThread();
+        AwTestTouchUtils.simulateTouchCenterOfView(mTestView);
         pollForHitTestDataOnUiThread(HitTestResult.IMAGE_TYPE, fullImageSrc);
         pollForHrefAndImageSrcOnUiThread(null, null, fullImageSrc);
     }
@@ -403,7 +385,7 @@ public class WebKitHitTestTest extends AwTestBase {
                 return mAwContents.getContentViewCore().getTitle().equals(title);
             }
         });
-        simulateTouchCenterOfWebViewOnUiThread();
+        AwTestTouchUtils.simulateTouchCenterOfView(mTestView);
         pollForHitTestDataOnUiThread(HitTestResult.UNKNOWN_TYPE, null);
     }
 
@@ -434,7 +416,7 @@ public class WebKitHitTestTest extends AwTestBase {
         // Touch image. Now the focus based hit test path will try to null out
         // the results and the touch based path will update with the result of
         // the image.
-        simulateTouchCenterOfWebViewOnUiThread();
+        AwTestTouchUtils.simulateTouchCenterOfView(mTestView);
 
         // Make sure the result of image sticks.
         for (int i = 0; i < 2; ++i) {

android_webview/javatests/src/org/chromium/android_webview/test/util/AwTestTouchUtils.java

@@ -76,5 +76,29 @@ public class AwTestTouchUtils {
             }
         });
     }
+
+    /**
+     * Performs a single touch on the center of the supplied view.
+     * This is safe to call from the instrumentation thread and will invoke the touch
+     * asynchronously.
+     *
+     * @param view The view the coordinates are relative to.
+     */
+    public static void simulateTouchCenterOfView(final View view) throws Throwable {
+        view.post(new Runnable() {
+            @Override
+            public void run() {
+                long eventTime = SystemClock.uptimeMillis();
+                float x = (float) (view.getRight() - view.getLeft()) / 2;
+                float y = (float) (view.getBottom() - view.getTop()) / 2;
+                view.onTouchEvent(MotionEvent.obtain(
+                        eventTime, eventTime, MotionEvent.ACTION_DOWN,
+                        x, y, 0));
+                view.onTouchEvent(MotionEvent.obtain(
+                        eventTime, eventTime, MotionEvent.ACTION_UP,
+                        x, y, 0));
+            }
+        });
+    }
 }