Upstream GestureDetectorProxyTest

content/public/android/javatests/src/org/chromium/content/browser/GestureDetectorProxyTest.java

Index: content/public/android/javatests/src/org/chromium/content/browser/GestureDetectorProxyTest.java
diff --git a/content/public/android/javatests/src/org/chromium/content/browser/GestureDetectorProxyTest.java b/content/public/android/javatests/src/org/chromium/content/browser/GestureDetectorProxyTest.java
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+// 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.
+
+/**
+ * Test suite for GestureDetectorProxy.
+ */
+
+package org.chromium.content.browser;
+
+import android.content.Context;
+import android.os.SystemClock;
+import android.test.InstrumentationTestCase;
+import android.test.suitebuilder.annotation.LargeTest;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.view.GestureDetector;
+import android.view.MotionEvent;
+import android.view.ViewConfiguration;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import org.chromium.base.test.Feature;
+import org.chromium.base.test.ScalableTimeout;
+
+public class GestureDetectorProxyTest extends InstrumentationTestCase {
+    final int mTouchSlop = 37;
+    MockListener mMockListener;
+    MockGestureDetector mMockDetector;
+    GestureDetectorProxy mProxy;
+
+    class MockListener extends GestureDetector.SimpleOnGestureListener {
+        MotionEvent mLastLongPress;
+        MotionEvent mLastSingleTap;
+        MotionEvent mLastFling1;
+        MotionEvent mLastFling2;
+        CountDownLatch mLongPressCalled;
+        MotionEvent mLastScroll1;
+        MotionEvent mLastScroll2;
+        float mLastScrollDistanceX;
+        float mLastScrollDistanceY;
+
+        public MockListener() {
+            mLongPressCalled = new CountDownLatch(1);
+        }
+
+        @Override
+        public void onLongPress(MotionEvent e) {
+            mLastLongPress = MotionEvent.obtain(e);
+            mLongPressCalled.countDown();
+        }
+
+        @Override
+        public boolean onSingleTapConfirmed(MotionEvent e) {
+            mLastSingleTap = e;
+            return true;
+        }
+
+        @Override
+        public boolean onSingleTapUp(MotionEvent e) {
+            mLastSingleTap = e;
+            return true;
+        }
+
+        @Override
+        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
+            mLastScroll1 = e1;
+            mLastScroll2 = e2;
+            mLastScrollDistanceX = distanceX;
+            mLastScrollDistanceY = distanceY;
+            return true;
+        }
+
+        @Override
+        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
+            mLastFling1 = e1;
+            mLastFling2 = e2;
+            return true;
+        }
+    }
+
+    class MockGestureDetector extends GestureDetector {
+        MotionEvent mLastEvent;
+        public MockGestureDetector(Context context, OnGestureListener listener) {
+            super(context, listener);
+        }
+
+        @Override
+        public boolean onTouchEvent(MotionEvent ev) {
+            mLastEvent = MotionEvent.obtain(ev);
+            return super.onTouchEvent(ev);
+        }
+    }
+
+    private MotionEvent motionEvent(int action, long downTime, long eventTime) {
+        final int fakeCoordX = 42;
+        final int fakeCoordY = 24;
+        return MotionEvent.obtain(downTime, eventTime, action, fakeCoordX, fakeCoordY, 0);
+    }
+
+    @Override
+    public void setUp() {
+        mMockListener = new MockListener();
+        mMockDetector = new MockGestureDetector(getInstrumentation().getTargetContext(),
+                mMockListener);
+        mProxy = new GestureDetectorProxy(getInstrumentation().getTargetContext(),
+                mMockDetector, mMockListener);
+    }
+
+    /**
+     * Verify a DOWN without a corresponding UP will have a pending DOWN.
+     *
+     * @throws Exception
+     */
+    @SmallTest
+    @Feature({"Android-WebView"})
+    public void testProxySimpleLongPress() throws Exception {
+        final long downTime = SystemClock.uptimeMillis();
+        final long eventTime = SystemClock.uptimeMillis();
+
+        MotionEvent event = motionEvent(MotionEvent.ACTION_DOWN, downTime, eventTime);
+
+        assertFalse(mProxy.onTouchEvent(event));
+        assertTrue("Should have a pending gesture", mMockDetector.mLastEvent != null);
+        assertTrue("Should have a pending LONG_PRESS", mProxy.hasPendingMessage());
+    }
+
+    /**
+     * Verify a DOWN with a corresponding UP will not have a pending Gesture.
+     *
+     * @throws Exception
+     */
+    @SmallTest
+    @Feature({"Android-WebView"})
+    public void testProxyNoLongPress() throws Exception {
+        final long downTime = SystemClock.uptimeMillis();
+        final long eventTime = SystemClock.uptimeMillis();
+
+        MotionEvent event = motionEvent(MotionEvent.ACTION_DOWN, downTime, eventTime);
+
+        assertFalse(mProxy.onTouchEvent(event));
+        assertTrue("Should have a pending gesture", mMockDetector.mLastEvent != null);
+        assertTrue("Should have a pending LONG_PRESS", mProxy.hasPendingMessage());
+
+        event = motionEvent(MotionEvent.ACTION_UP, downTime, eventTime + 10);
+        mProxy.cancelLongPressIfNeeded(event);
+        assertTrue("Should not have a pending LONG_PRESS", !mProxy.hasPendingMessage());
+    }
+
+    /**
+     * Verify that a DOWN followed by an UP after the long press timer would
+     * detect a long press (that is, the UP will not trigger a tap or cancel the
+     * long press).
+     *
+     * @throws Exception
+     */
+    @SmallTest
+    @Feature({"Android-WebView"})
+    public void testProxyLongWithDelayedUp() throws Exception {
+        final long downTime = SystemClock.uptimeMillis();
+        final long eventTime = SystemClock.uptimeMillis();
+
+        MotionEvent event = motionEvent(MotionEvent.ACTION_DOWN, downTime, eventTime);
+
+        assertFalse(mProxy.onTouchEvent(event));
+        assertTrue("Should have a pending gesture", mMockDetector.mLastEvent != null);
+        assertTrue("Should have a pending LONG_PRESS", mProxy.hasPendingMessage());
+
+        // Event time must be larger than LONG_PRESS_TIMEOUT.
+        event = motionEvent(MotionEvent.ACTION_UP, downTime, eventTime + 1000);
+        mProxy.cancelLongPressIfNeeded(event);
+        assertTrue("Should still have a pending gesture", mProxy.hasPendingMessage());
+    }
+
+    /**
+     * Verify that a DOWN followed shortly by an UP will trigger a single tap.
+     *
+     * @throws Exception
+     */
+    @SmallTest
+    @Feature({"Android-WebView"})
+    public void testProxySingleClick() throws Exception {
+        final long downTime = SystemClock.uptimeMillis();
+        final long eventTime = SystemClock.uptimeMillis();
+
+        MotionEvent event = motionEvent(MotionEvent.ACTION_DOWN, downTime, eventTime);
+
+        assertFalse(mProxy.onTouchEvent(event));
+        assertTrue("Should have a pending gesture", mMockDetector.mLastEvent != null);
+        assertTrue("Should have a pending LONG_PRESS", mProxy.hasPendingMessage());
+
+        event = motionEvent(MotionEvent.ACTION_UP, downTime, eventTime + 10);
+        mProxy.cancelLongPressIfNeeded(event);
+        assertTrue("Should not have a pending LONG_PRESS", !mProxy.hasPendingMessage());
+        assertTrue(mProxy.onTouchEvent(event));
+        // Synchronous, no need to wait.
+        assertTrue("Should have a single tap", mMockListener.mLastSingleTap != null);
+    }
+
+    /**
+     * Verify that a DOWN followed by a MOVE will trigger fling (but not LONG).
+     * @throws Exception
+     */
+    @SmallTest
+    @Feature({"Android-WebView"})
+    public void testProxyFlingAndCancelLongClick() throws Exception {
+        final long downTime = SystemClock.uptimeMillis();
+        final long eventTime = SystemClock.uptimeMillis();
+
+        MotionEvent event = motionEvent(MotionEvent.ACTION_DOWN, downTime, eventTime);
+
+        assertFalse(mProxy.onTouchEvent(event));
+        assertTrue("Should have a pending gesture", mMockDetector.mLastEvent != null);
+        assertTrue("Should have a pending LONG_PRESS", mProxy.hasPendingMessage());
+
+        event = MotionEvent.obtain(downTime, eventTime + 5, MotionEvent.ACTION_MOVE, 420, 420, 0);
+        mProxy.cancelLongPressIfNeeded(event);
+        assertTrue("Should not have a pending LONG_PRESS", !mProxy.hasPendingMessage());
+        assertTrue(mProxy.onTouchEvent(event));
+
+        event = MotionEvent.obtain(downTime, eventTime + 10, MotionEvent.ACTION_UP, 420, 420, 0);
+        assertTrue(mProxy.onTouchEvent(event));
+
+        // Synchronous, no need to wait.
+        assertTrue("Should have a fling", mMockListener.mLastFling1 != null);
+        assertTrue("Should not have a long press", mMockListener.mLastLongPress == null);
+    }
+
+
+    class MainThreadTestHelper {
+        MockListener mMockListenerUI;
+        MockGestureDetector mMockDetectorUI;
+        GestureDetectorProxy mProxyUI;
+
+        void setUp() {
+            mMockListenerUI = new MockListener();
+            mMockDetectorUI = new MockGestureDetector(getInstrumentation().getTargetContext(),
+                    mMockListenerUI);
+            mProxyUI = new GestureDetectorProxy(getInstrumentation().getTargetContext(),
+                    mMockDetectorUI, mMockListenerUI);
+        }
+    }
+
+    /**
+     * This is an example of a large test running delayed messages.
+     * It exercises GestureDetector itself, and expects the onLongPress to be called.
+     * Note that GestureDetector creates a Handler and posts message to it for detecting
+     * long press. It needs to be created on the Main thread.
+     *
+     * @throws Exception
+     */
+    @LargeTest
+    @Feature({"Android-WebView"})
+    public void testProxyLongPressDetected() throws Exception {
+        final MainThreadTestHelper mainThreadTestHelper = new MainThreadTestHelper();
+
+        getInstrumentation().runOnMainSync(new Runnable() {
+            @Override
+            public void run() {
+                mainThreadTestHelper.setUp();
+                final long downTime = SystemClock.uptimeMillis();
+                final long eventTime = SystemClock.uptimeMillis();
+                MotionEvent event = motionEvent(MotionEvent.ACTION_DOWN, downTime, eventTime);
+                mainThreadTestHelper.mProxyUI.onTouchEvent(event);
+            }
+        });
+        assertTrue(mainThreadTestHelper.mMockListenerUI
+                .mLongPressCalled.await(ScalableTimeout.ScaleTimeout(1000), TimeUnit.MILLISECONDS));
+    }
+
+    /**
+     * Verify that the touch move threshold (slop) is working for events offered to native.
+     */
+    @SmallTest
+    @Feature({"Android-WebView"})
+    public void testConfirmOfferMoveEventToNative() {
+        final int slop = ViewConfiguration.get(getInstrumentation().getTargetContext())
+                .getScaledTouchSlop();
+
+        final int downX = 100;
+        final int downY = 200;
+        long eventTime = SystemClock.uptimeMillis();
+        final MotionEvent downEvent = MotionEvent.obtain(eventTime, eventTime,
+                MotionEvent.ACTION_DOWN, downX, downY, 0);
+
+        // Test a small move, where confirmOfferMoveEventToNative should return false.
+        mProxy.onOfferTouchEventToNative(downEvent);
+        eventTime = SystemClock.uptimeMillis();
+        final MotionEvent smallMove = MotionEvent.obtain(eventTime, eventTime,
+                MotionEvent.ACTION_MOVE, downX + slop / 2, downY + slop / 2, 0);
+        assertFalse(mProxy.confirmOfferMoveEventToNative(smallMove));
+
+        // Test a big move, where confirmOfferMoveEventToNative should return true.
+        mProxy.onOfferTouchEventToNative(downEvent);
+        eventTime = SystemClock.uptimeMillis();
+        final MotionEvent largeMove = MotionEvent.obtain(eventTime, eventTime,
+                MotionEvent.ACTION_MOVE, downX + slop * 2, downY + slop * 2, 0);
+        assertTrue(mProxy.confirmOfferMoveEventToNative(largeMove));
+    }
+}