Extract NotificationSwipeHelper and related state from NSSL.

Change-Id: Ic0a1178e4f3d6f2addd9bae1c31ec57dffee8eba
Test: Automated tests should pass. Manual testing should also show that notifications behave the same as before (swiping, tapping, dismissing, snapping/unsnapping menu, etc.)
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationSwipeHelperTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationSwipeHelperTest.java
new file mode 100644
index 0000000..b5f67c0
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationSwipeHelperTest.java
@@ -0,0 +1,511 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.systemui.statusbar.notification.stack;
+
+import static junit.framework.Assert.assertEquals;
+import static junit.framework.Assert.assertFalse;
+import static junit.framework.Assert.assertNotNull;
+import static junit.framework.Assert.assertTrue;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyBoolean;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.atLeastOnce;
+import static org.mockito.Mockito.clearInvocations;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.mockitoSession;
+import static org.mockito.Mockito.reset;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.animation.Animator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.content.Context;
+import android.graphics.Rect;
+import android.os.Handler;
+import android.os.IPowerManager;
+import android.os.Looper;
+import android.os.PowerManager;
+import android.service.notification.StatusBarNotification;
+import android.support.test.annotation.UiThreadTest;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+import android.testing.TestableLooper.RunWithLooper;
+import android.view.MotionEvent;
+import android.view.VelocityTracker;
+import android.view.View;
+import android.view.MotionEvent;
+
+import com.android.systemui.SwipeHelper;
+import com.android.systemui.SysuiTestCase;
+import com.android.systemui.plugins.statusbar.NotificationMenuRowPlugin;
+import com.android.systemui.plugins.statusbar.NotificationSwipeActionHelper.SnoozeOption;
+import com.android.systemui.statusbar.notification.row.ExpandableNotificationRow;
+import com.android.systemui.statusbar.notification.row.NotificationMenuRow;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockitoSession;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.mockito.stubbing.Answer;
+
+import java.util.ArrayList;
+
+/**
+ * Tests for {@link NotificationSwipeHelper}.
+ */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class NotificationSwipeHelperTest extends SysuiTestCase {
+
+    private NotificationSwipeHelper mSwipeHelper;
+    private NotificationSwipeHelper.NotificationCallback mCallback;
+    private NotificationMenuRowPlugin.OnMenuEventListener mListener;
+    private View mView;
+    private MotionEvent mEvent;
+    private NotificationMenuRowPlugin mMenuRow;
+    private Handler mHandler;
+    private ExpandableNotificationRow mNotificationRow;
+    private Runnable mFalsingCheck;
+
+    @Rule public MockitoRule mockito = MockitoJUnit.rule();
+
+    @Before
+    @UiThreadTest
+    public void setUp() throws Exception {
+        mCallback = mock(NotificationSwipeHelper.NotificationCallback.class);
+        mListener = mock(NotificationMenuRowPlugin.OnMenuEventListener.class);
+        mSwipeHelper = spy(new NotificationSwipeHelper(SwipeHelper.X, mCallback, mContext, mListener));
+        mView = mock(View.class);
+        mEvent = mock(MotionEvent.class);
+        mMenuRow = mock(NotificationMenuRowPlugin.class);
+        mNotificationRow = mock(ExpandableNotificationRow.class);
+        mHandler = mock(Handler.class);
+        mFalsingCheck = mock(Runnable.class);
+    }
+
+    @Test
+    public void testSetExposedMenuView() {
+        assertEquals("intialized with null exposed menu view", null,
+                mSwipeHelper.getExposedMenuView());
+        mSwipeHelper.setExposedMenuView(mView);
+        assertEquals("swipe helper has correct exposedMenuView after setExposedMenuView to a view",
+                mView, mSwipeHelper.getExposedMenuView());
+        mSwipeHelper.setExposedMenuView(null);
+        assertEquals("swipe helper has null exposedMenuView after setExposedMenuView to null",
+                null, mSwipeHelper.getExposedMenuView());
+    }
+
+    @Test
+    public void testClearExposedMenuView() {
+        doNothing().when(mSwipeHelper).setExposedMenuView(mView);
+        mSwipeHelper.clearExposedMenuView();
+        verify(mSwipeHelper, times(1)).setExposedMenuView(null);
+    }
+
+    @Test
+    public void testGetTranslatingParentView() {
+        assertEquals("intialized with null translating parent view", null,
+                mSwipeHelper.getTranslatingParentView());
+        mSwipeHelper.setTranslatingParentView(mView);
+        assertEquals("has translating parent view after setTranslatingParentView with a view",
+                mView, mSwipeHelper.getTranslatingParentView());
+    }
+
+    @Test
+    public void testClearTranslatingParentView() {
+        doNothing().when(mSwipeHelper).setTranslatingParentView(null);
+        mSwipeHelper.clearTranslatingParentView();
+        verify(mSwipeHelper, times(1)).setTranslatingParentView(null);
+    }
+
+    @Test
+    public void testSetCurrentMenuRow() {
+        assertEquals("currentMenuRow initializes to null", null,
+                mSwipeHelper.getCurrentMenuRow());
+        mSwipeHelper.setCurrentMenuRow(mMenuRow);
+        assertEquals("currentMenuRow set correctly after setCurrentMenuRow", mMenuRow,
+                mSwipeHelper.getCurrentMenuRow());
+        mSwipeHelper.setCurrentMenuRow(null);
+        assertEquals("currentMenuRow set to null after setCurrentMenuRow to null",
+                null, mSwipeHelper.getCurrentMenuRow());
+    }
+
+    @Test
+    public void testClearCurrentMenuRow() {
+        doNothing().when(mSwipeHelper).setCurrentMenuRow(null);
+        mSwipeHelper.clearCurrentMenuRow();
+        verify(mSwipeHelper, times(1)).setCurrentMenuRow(null);
+    }
+
+    @Test
+    public void testOnDownUpdate_ExpandableNotificationRow() {
+        when(mSwipeHelper.getHandler()).thenReturn(mHandler);
+        when(mSwipeHelper.getFalsingCheck()).thenReturn(mFalsingCheck);
+        doNothing().when(mSwipeHelper).resetExposedMenuView(true, false);
+        doNothing().when(mSwipeHelper).clearCurrentMenuRow();
+        doNothing().when(mSwipeHelper).initializeRow(any());
+
+        mSwipeHelper.onDownUpdate(mNotificationRow, mEvent);
+
+        verify(mSwipeHelper, times(1)).clearCurrentMenuRow();
+        verify(mHandler, times(1)).removeCallbacks(mFalsingCheck);
+        verify(mSwipeHelper, times(1)).resetExposedMenuView(true, false);
+        verify(mSwipeHelper, times(1)).initializeRow(mNotificationRow);
+    }
+
+    @Test
+    public void testOnDownUpdate_notExpandableNotificationRow() {
+        when(mSwipeHelper.getHandler()).thenReturn(mHandler);
+        when(mSwipeHelper.getFalsingCheck()).thenReturn(mFalsingCheck);
+        doNothing().when(mSwipeHelper).resetExposedMenuView(true, false);
+        doNothing().when(mSwipeHelper).clearCurrentMenuRow();
+        doNothing().when(mSwipeHelper).initializeRow(any());
+
+        mSwipeHelper.onDownUpdate(mView, mEvent);
+
+        verify(mSwipeHelper, times(1)).clearCurrentMenuRow();
+        verify(mHandler, times(1)).removeCallbacks(mFalsingCheck);
+        verify(mSwipeHelper, times(1)).resetExposedMenuView(true, false);
+        verify(mSwipeHelper, times(0)).initializeRow(any());
+    }
+
+    @Test
+    public void testOnMoveUpdate_menuRow() {
+        when(mSwipeHelper.getCurrentMenuRow()).thenReturn(mMenuRow);
+        when(mSwipeHelper.getHandler()).thenReturn(mHandler);
+        when(mSwipeHelper.getFalsingCheck()).thenReturn(mFalsingCheck);
+
+        mSwipeHelper.onMoveUpdate(mView, mEvent, 0, 10);
+
+        verify(mHandler, times(1)).removeCallbacks(mFalsingCheck);
+        verify(mMenuRow, times(1)).onTouchMove(10);
+    }
+
+    @Test
+    public void testOnMoveUpdate_noMenuRow() {
+        when(mSwipeHelper.getHandler()).thenReturn(mHandler);
+        when(mSwipeHelper.getFalsingCheck()).thenReturn(mFalsingCheck);
+
+        mSwipeHelper.onMoveUpdate(mView, mEvent, 0, 10);
+
+        verify(mHandler, times(1)).removeCallbacks(mFalsingCheck);
+    }
+
+    @Test
+    public void testHandleUpEvent_noMenuRow() {
+        assertFalse("Menu row does not exist",
+                mSwipeHelper.handleUpEvent(mEvent, mView, 0, 0));
+    }
+
+    @Test
+    public void testHandleUpEvent_menuRow() {
+        when(mSwipeHelper.getCurrentMenuRow()).thenReturn(mMenuRow);
+        doNothing().when(mSwipeHelper).handleMenuRowSwipe(mEvent, mView, 0, mMenuRow);
+
+        assertTrue("Menu row exists",
+                mSwipeHelper.handleUpEvent(mEvent, mView, 0, 0));
+        verify(mMenuRow, times(1)).onTouchEnd();
+        verify(mSwipeHelper, times(1)).handleMenuRowSwipe(mEvent, mView, 0, mMenuRow);
+    }
+
+    @Test
+    public void testDismissChild_notExpanded() {
+        when(mCallback.isExpanded()).thenReturn(false);
+        doNothing().when(mSwipeHelper).superDismissChild(mView, 0, false);
+        doNothing().when(mSwipeHelper).handleMenuCoveredOrDismissed();
+
+        mSwipeHelper.dismissChild(mView, 0, false);
+
+        verify(mSwipeHelper, times(1)).superDismissChild(mView, 0, false);
+        verify(mCallback, times(0)).handleChildViewDismissed(mView);
+        verify(mCallback, times(1)).onDismiss();
+        verify(mSwipeHelper, times(1)).handleMenuCoveredOrDismissed();
+    }
+
+    @Test
+    public void testSnapchild_targetIsZero() {
+        doNothing().when(mSwipeHelper).superSnapChild(mView, 0, 0);
+        mSwipeHelper.snapChild(mView, 0, 0);
+
+        verify(mCallback, times(1)).onDragCancelled(mView);
+        verify(mSwipeHelper, times(1)).superSnapChild(mView, 0, 0);
+        verify(mSwipeHelper, times(1)).handleMenuCoveredOrDismissed();
+    }
+
+
+    @Test
+    public void testSnapchild_targetNotZero() {
+        doNothing().when(mSwipeHelper).superSnapChild(mView, 10, 0);
+        mSwipeHelper.snapChild(mView, 10, 0);
+
+        verify(mCallback, times(1)).onDragCancelled(mView);
+        verify(mSwipeHelper, times(1)).superSnapChild(mView, 10, 0);
+        verify(mSwipeHelper, times(0)).handleMenuCoveredOrDismissed();
+    }
+
+    @Test
+    public void testSnooze() {
+        StatusBarNotification sbn = mock(StatusBarNotification.class);
+        SnoozeOption snoozeOption = mock(SnoozeOption.class);
+        mSwipeHelper.snooze(sbn, snoozeOption);
+        verify(mCallback, times(1)).onSnooze(sbn, snoozeOption);
+    }
+
+    @Test
+    public void testGetViewTranslationAnimator_notExpandableNotificationRow() {
+        Animator animator = mock(Animator.class);
+        AnimatorUpdateListener listener = mock(AnimatorUpdateListener.class);
+        doReturn(animator).when(mSwipeHelper).superGetViewTranslationAnimator(mView, 0, listener);
+
+        assertEquals("returns the correct animator from super", animator,
+                mSwipeHelper.getViewTranslationAnimator(mView, 0, listener));
+
+        verify(mSwipeHelper, times(1)).superGetViewTranslationAnimator(mView, 0, listener);
+    }
+
+    @Test
+    public void testGetViewTranslationAnimator_expandableNotificationRow() {
+        Animator animator = mock(Animator.class);
+        AnimatorUpdateListener listener = mock(AnimatorUpdateListener.class);
+        doReturn(animator).when(mNotificationRow).getTranslateViewAnimator(0, listener);
+
+        assertEquals("returns the correct animator from super when view is an ENR", animator,
+                mSwipeHelper.getViewTranslationAnimator(mNotificationRow, 0, listener));
+
+        verify(mNotificationRow, times(1)).getTranslateViewAnimator(0, listener);
+    }
+
+    @Test
+    public void testSetTranslation() {
+        mSwipeHelper.setTranslation(mNotificationRow, 0);
+        verify(mNotificationRow, times(1)).setTranslation(0);
+    }
+
+    @Test
+    public void testGetTranslation() {
+        doReturn(30f).when(mNotificationRow).getTranslation();
+
+        assertEquals("Returns getTranslation for the ENR",
+                mSwipeHelper.getTranslation(mNotificationRow), 30f);
+
+        verify(mNotificationRow, times(1)).getTranslation();
+    }
+
+    @Test
+    public void testDismiss() {
+        doNothing().when(mSwipeHelper).dismissChild(mView, 0, true);
+        doReturn(false).when(mSwipeHelper).swipedFastEnough();
+
+        mSwipeHelper.dismiss(mView, 0);
+
+        verify(mSwipeHelper, times(1)).swipedFastEnough();
+        verify(mSwipeHelper, times(1)).dismissChild(mView, 0, true);
+    }
+
+    @Test
+    public void testSnapOpen() {
+        doNothing().when(mSwipeHelper).snapChild(mView, 30, 0);
+
+        mSwipeHelper.snapOpen(mView, 30, 0);
+
+        verify(mSwipeHelper, times(1)).snapChild(mView, 30, 0);
+    }
+
+    @Test
+    public void testSnapClosed() {
+        doNothing().when(mSwipeHelper).snapChild(mView, 0, 0);
+
+        mSwipeHelper.snapClosed(mView, 0);
+
+        verify(mSwipeHelper, times(1)).snapChild(mView, 0, 0);
+    }
+
+    @Test
+    public void testGetMinDismissVelocity() {
+        doReturn(30f).when(mSwipeHelper).getEscapeVelocity();
+
+        assertEquals("Returns getEscapeVelocity", 30f, mSwipeHelper.getMinDismissVelocity());
+    }
+
+    @Test
+    public void onMenuShown_noAntiFalsing() {
+        doNothing().when(mSwipeHelper).setExposedMenuView(mView);
+        doReturn(mView).when(mSwipeHelper).getTranslatingParentView();
+        doReturn(mHandler).when(mSwipeHelper).getHandler();
+        doReturn(false).when(mCallback).isAntiFalsingNeeded();
+        doReturn(mFalsingCheck).when(mSwipeHelper).getFalsingCheck();
+
+        mSwipeHelper.onMenuShown(mView);
+
+        verify(mSwipeHelper, times(1)).setExposedMenuView(mView);
+        verify(mCallback, times(1)).onDragCancelled(mView);
+        verify(mCallback, times(1)).isAntiFalsingNeeded();
+
+        verify(mHandler, times(0)).removeCallbacks(mFalsingCheck);
+        verify(mHandler, times(0)).postDelayed(mFalsingCheck, mSwipeHelper.COVER_MENU_DELAY);
+    }
+
+    @Test
+    public void onMenuShown_antiFalsing() {
+        doNothing().when(mSwipeHelper).setExposedMenuView(mView);
+        doReturn(mView).when(mSwipeHelper).getTranslatingParentView();
+        doReturn(mHandler).when(mSwipeHelper).getHandler();
+        doReturn(true).when(mCallback).isAntiFalsingNeeded();
+        doReturn(mFalsingCheck).when(mSwipeHelper).getFalsingCheck();
+
+        mSwipeHelper.onMenuShown(mView);
+
+        verify(mSwipeHelper, times(1)).setExposedMenuView(mView);
+        verify(mCallback, times(1)).onDragCancelled(mView);
+        verify(mCallback, times(1)).isAntiFalsingNeeded();
+
+        verify(mHandler, times(1)).removeCallbacks(mFalsingCheck);
+        verify(mHandler, times(1)).postDelayed(mFalsingCheck, mSwipeHelper.COVER_MENU_DELAY);
+    }
+
+    @Test
+    public void testResetExposedMenuView_noReset() {
+        doReturn(false).when(mSwipeHelper).shouldResetMenu(false);
+        doNothing().when(mSwipeHelper).clearExposedMenuView();
+
+        mSwipeHelper.resetExposedMenuView(false, false);
+
+        verify(mSwipeHelper, times(1)).shouldResetMenu(false);
+
+        // should not clear exposed menu row
+        verify(mSwipeHelper, times(0)).clearExposedMenuView();
+    }
+
+    @Test
+    public void testResetExposedMenuView_animate() {
+        Animator animator = mock(Animator.class);
+
+        doReturn(true).when(mSwipeHelper).shouldResetMenu(false);
+        doReturn(mNotificationRow).when(mSwipeHelper).getExposedMenuView();
+        doReturn(false).when(mNotificationRow).isRemoved();
+        doReturn(animator).when(mSwipeHelper).getViewTranslationAnimator(mNotificationRow, 0, null);
+        doNothing().when(mSwipeHelper).clearExposedMenuView();
+
+        mSwipeHelper.resetExposedMenuView(true, false);
+
+        verify(mSwipeHelper, times(1)).shouldResetMenu(false);
+
+        // should retrieve and start animator
+        verify(mSwipeHelper, times(1)).getViewTranslationAnimator(mNotificationRow, 0, null);
+        verify(animator, times(1)).start();
+
+        // should not reset translation on row directly
+        verify(mNotificationRow, times(0)).resetTranslation();
+
+        // should clear exposed menu row
+        verify(mSwipeHelper, times(1)).clearExposedMenuView();
+    }
+
+
+    @Test
+    public void testResetExposedMenuView_noAnimate() {
+        Animator animator = mock(Animator.class);
+
+        doReturn(true).when(mSwipeHelper).shouldResetMenu(false);
+        doReturn(mNotificationRow).when(mSwipeHelper).getExposedMenuView();
+        doReturn(false).when(mNotificationRow).isRemoved();
+        doReturn(animator).when(mSwipeHelper).getViewTranslationAnimator(mNotificationRow, 0, null);
+        doNothing().when(mSwipeHelper).clearExposedMenuView();
+
+        mSwipeHelper.resetExposedMenuView(false, false);
+
+        verify(mSwipeHelper, times(1)).shouldResetMenu(false);
+
+        // should not retrieve and start animator
+        verify(mSwipeHelper, times(0)).getViewTranslationAnimator(mNotificationRow, 0, null);
+        verify(animator, times(0)).start();
+
+        // should reset translation on row directly
+        verify(mNotificationRow, times(1)).resetTranslation();
+
+        // should clear exposed menu row
+        verify(mSwipeHelper, times(1)).clearExposedMenuView();
+    }
+
+    @Test
+    public void testIsTouchInView() {
+        assertEquals("returns false when view is null", false,
+                NotificationSwipeHelper.isTouchInView(mEvent, null));
+
+        doReturn(5f).when(mEvent).getRawX();
+        doReturn(10f).when(mEvent).getRawY();
+
+        doReturn(20).when(mView).getWidth();
+        doReturn(20).when(mView).getHeight();
+
+        Answer answer = (Answer) invocation -> {
+            int[] arr = invocation.getArgument(0);
+            arr[0] = 0;
+            arr[1] = 0;
+            return null;
+        };
+        doAnswer(answer).when(mView).getLocationOnScreen(any());
+
+        assertTrue("Touch is within the view",
+                mSwipeHelper.isTouchInView(mEvent, mView));
+
+        doReturn(50f).when(mEvent).getRawX();
+
+        assertFalse("Touch is not within the view",
+                mSwipeHelper.isTouchInView(mEvent, mView));
+    }
+
+    @Test
+    public void testIsTouchInView_expandable() {
+        assertEquals("returns false when view is null", false,
+                NotificationSwipeHelper.isTouchInView(mEvent, null));
+
+        doReturn(5f).when(mEvent).getRawX();
+        doReturn(10f).when(mEvent).getRawY();
+
+        doReturn(20).when(mNotificationRow).getWidth();
+        doReturn(20).when(mNotificationRow).getActualHeight();
+
+        Answer answer = (Answer) invocation -> {
+            int[] arr = invocation.getArgument(0);
+            arr[0] = 0;
+            arr[1] = 0;
+            return null;
+        };
+        doAnswer(answer).when(mNotificationRow).getLocationOnScreen(any());
+
+        assertTrue("Touch is within the view",
+                mSwipeHelper.isTouchInView(mEvent, mNotificationRow));
+
+        doReturn(50f).when(mEvent).getRawX();
+
+        assertFalse("Touch is not within the view",
+                mSwipeHelper.isTouchInView(mEvent, mNotificationRow));
+    }
+}