| /* |
| * Copyright (C) 2014 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 android.support.v7.widget; |
| |
| import android.app.Instrumentation; |
| import android.graphics.Rect; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.support.v4.view.ViewCompat; |
| import android.test.ActivityInstrumentationTestCase2; |
| import android.util.Log; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.FrameLayout; |
| import android.widget.TextView; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.locks.ReentrantLock; |
| import android.support.v7.recyclerview.test.R; |
| |
| abstract public class BaseRecyclerViewInstrumentationTest extends |
| ActivityInstrumentationTestCase2<TestActivity> { |
| |
| private static final String TAG = "RecyclerViewTest"; |
| |
| private boolean mDebug; |
| |
| protected RecyclerView mRecyclerView; |
| |
| protected AdapterHelper mAdapterHelper; |
| |
| Throwable mainThreadException; |
| |
| Thread mInstrumentationThread; |
| |
| public BaseRecyclerViewInstrumentationTest() { |
| this(false); |
| } |
| |
| public BaseRecyclerViewInstrumentationTest(boolean debug) { |
| super("android.support.v7.recyclerview", TestActivity.class); |
| mDebug = debug; |
| } |
| |
| void checkForMainThreadException() throws Throwable { |
| if (mainThreadException != null) { |
| throw mainThreadException; |
| } |
| } |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| mInstrumentationThread = Thread.currentThread(); |
| } |
| |
| void setHasTransientState(final View view, final boolean value) { |
| try { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| ViewCompat.setHasTransientState(view, value); |
| } |
| }); |
| } catch (Throwable throwable) { |
| Log.e(TAG, "", throwable); |
| } |
| } |
| |
| protected void enableAccessibility() |
| throws NoSuchMethodException, InvocationTargetException, IllegalAccessException { |
| Method getUIAutomation = Instrumentation.class.getMethod("getUiAutomation"); |
| getUIAutomation.invoke(getInstrumentation()); |
| } |
| |
| void setAdapter(final RecyclerView.Adapter adapter) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| mRecyclerView.setAdapter(adapter); |
| } |
| }); |
| } |
| |
| protected WrappedRecyclerView inflateWrappedRV() { |
| return (WrappedRecyclerView) |
| LayoutInflater.from(getActivity()).inflate(R.layout.wrapped_test_rv, |
| getRecyclerViewContainer(), false); |
| } |
| |
| void swapAdapter(final RecyclerView.Adapter adapter, |
| final boolean removeAndRecycleExistingViews) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| mRecyclerView.swapAdapter(adapter, removeAndRecycleExistingViews); |
| } catch (Throwable t) { |
| postExceptionToInstrumentation(t); |
| } |
| } |
| }); |
| checkForMainThreadException(); |
| } |
| |
| void postExceptionToInstrumentation(Throwable t) { |
| if (mInstrumentationThread == Thread.currentThread()) { |
| throw new RuntimeException(t); |
| } |
| if (mainThreadException != null) { |
| Log.e(TAG, "receiving another main thread exception. dropping.", t); |
| } else { |
| Log.e(TAG, "captured exception on main thread", t); |
| mainThreadException = t; |
| } |
| |
| if (mRecyclerView != null && mRecyclerView |
| .getLayoutManager() instanceof TestLayoutManager) { |
| TestLayoutManager lm = (TestLayoutManager) mRecyclerView.getLayoutManager(); |
| // finish all layouts so that we get the correct exception |
| while (lm.layoutLatch.getCount() > 0) { |
| lm.layoutLatch.countDown(); |
| } |
| } |
| } |
| |
| @Override |
| protected void tearDown() throws Exception { |
| if (mRecyclerView != null) { |
| try { |
| removeRecyclerView(); |
| } catch (Throwable throwable) { |
| throwable.printStackTrace(); |
| } |
| } |
| getInstrumentation().waitForIdleSync(); |
| super.tearDown(); |
| |
| try { |
| checkForMainThreadException(); |
| } catch (Exception e) { |
| throw e; |
| } catch (Throwable throwable) { |
| throw new Exception(Log.getStackTraceString(throwable)); |
| } |
| } |
| |
| public Rect getDecoratedRecyclerViewBounds() { |
| return new Rect( |
| mRecyclerView.getPaddingLeft(), |
| mRecyclerView.getPaddingTop(), |
| mRecyclerView.getWidth() - mRecyclerView.getPaddingRight(), |
| mRecyclerView.getHeight() - mRecyclerView.getPaddingBottom() |
| ); |
| } |
| |
| public void removeRecyclerView() throws Throwable { |
| if (mRecyclerView == null) { |
| return; |
| } |
| if (!isMainThread()) { |
| getInstrumentation().waitForIdleSync(); |
| } |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| final RecyclerView.Adapter adapter = mRecyclerView.getAdapter(); |
| if (adapter instanceof AttachDetachCountingAdapter) { |
| ((AttachDetachCountingAdapter) adapter).getCounter() |
| .validateRemaining(mRecyclerView); |
| } |
| getActivity().mContainer.removeAllViews(); |
| } catch (Throwable t) { |
| postExceptionToInstrumentation(t); |
| } |
| } |
| }); |
| mRecyclerView = null; |
| } |
| |
| void waitForAnimations(int seconds) throws Throwable { |
| final CountDownLatch latch = new CountDownLatch(1); |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| mRecyclerView.mItemAnimator |
| .isRunning(new RecyclerView.ItemAnimator.ItemAnimatorFinishedListener() { |
| @Override |
| public void onAnimationsFinished() { |
| latch.countDown(); |
| } |
| }); |
| } |
| }); |
| |
| assertTrue("animations didn't finish on expected time of " + seconds + " seconds", |
| latch.await(seconds, TimeUnit.SECONDS)); |
| } |
| |
| public boolean requestFocus(final View view) { |
| final boolean[] result = new boolean[1]; |
| getActivity().runOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| result[0] = view.requestFocus(); |
| } |
| }); |
| return result[0]; |
| } |
| |
| public void setRecyclerView(final RecyclerView recyclerView) throws Throwable { |
| setRecyclerView(recyclerView, true); |
| } |
| public void setRecyclerView(final RecyclerView recyclerView, boolean assignDummyPool) |
| throws Throwable { |
| setRecyclerView(recyclerView, assignDummyPool, true); |
| } |
| public void setRecyclerView(final RecyclerView recyclerView, boolean assignDummyPool, |
| boolean addPositionCheckItemAnimator) |
| throws Throwable { |
| mRecyclerView = recyclerView; |
| if (assignDummyPool) { |
| RecyclerView.RecycledViewPool pool = new RecyclerView.RecycledViewPool() { |
| @Override |
| public RecyclerView.ViewHolder getRecycledView(int viewType) { |
| RecyclerView.ViewHolder viewHolder = super.getRecycledView(viewType); |
| if (viewHolder == null) { |
| return null; |
| } |
| viewHolder.addFlags(RecyclerView.ViewHolder.FLAG_BOUND); |
| viewHolder.mPosition = 200; |
| viewHolder.mOldPosition = 300; |
| viewHolder.mPreLayoutPosition = 500; |
| return viewHolder; |
| } |
| |
| @Override |
| public void putRecycledView(RecyclerView.ViewHolder scrap) { |
| assertNull(scrap.mOwnerRecyclerView); |
| super.putRecycledView(scrap); |
| } |
| }; |
| mRecyclerView.setRecycledViewPool(pool); |
| } |
| if (addPositionCheckItemAnimator) { |
| mRecyclerView.addItemDecoration(new RecyclerView.ItemDecoration() { |
| @Override |
| public void getItemOffsets(Rect outRect, View view, RecyclerView parent, |
| RecyclerView.State state) { |
| RecyclerView.ViewHolder vh = parent.getChildViewHolder(view); |
| if (!vh.isRemoved()) { |
| assertNotSame("If getItemOffsets is called, child should have a valid" |
| + " adapter position unless it is removed : " + vh, |
| vh.getAdapterPosition(), RecyclerView.NO_POSITION); |
| } |
| } |
| }); |
| } |
| mAdapterHelper = recyclerView.mAdapterHelper; |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| getActivity().mContainer.addView(recyclerView); |
| } |
| }); |
| } |
| |
| protected FrameLayout getRecyclerViewContainer() { |
| return getActivity().mContainer; |
| } |
| |
| public void requestLayoutOnUIThread(final View view) { |
| try { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| view.requestLayout(); |
| } |
| }); |
| } catch (Throwable throwable) { |
| Log.e(TAG, "", throwable); |
| } |
| } |
| |
| public void scrollBy(final int dt) { |
| try { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| if (mRecyclerView.getLayoutManager().canScrollHorizontally()) { |
| mRecyclerView.scrollBy(dt, 0); |
| } else { |
| mRecyclerView.scrollBy(0, dt); |
| } |
| |
| } |
| }); |
| } catch (Throwable throwable) { |
| Log.e(TAG, "", throwable); |
| } |
| } |
| |
| void scrollToPosition(final int position) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| mRecyclerView.getLayoutManager().scrollToPosition(position); |
| } |
| }); |
| } |
| |
| void smoothScrollToPosition(final int position) |
| throws Throwable { |
| if (mDebug) { |
| Log.d(TAG, "SMOOTH scrolling to " + position); |
| } |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| mRecyclerView.smoothScrollToPosition(position); |
| } |
| }); |
| getInstrumentation().waitForIdleSync(); |
| Thread.sleep(200); //give scroller some time so start |
| while (mRecyclerView.getLayoutManager().isSmoothScrolling() || |
| mRecyclerView.getScrollState() != RecyclerView.SCROLL_STATE_IDLE) { |
| if (mDebug) { |
| Log.d(TAG, "SMOOTH scrolling step"); |
| } |
| Thread.sleep(200); |
| } |
| if (mDebug) { |
| Log.d(TAG, "SMOOTH scrolling done"); |
| } |
| getInstrumentation().waitForIdleSync(); |
| } |
| |
| void freezeLayout(final boolean freeze) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| mRecyclerView.setLayoutFrozen(freeze); |
| } |
| }); |
| } |
| |
| class TestViewHolder extends RecyclerView.ViewHolder { |
| |
| Item mBoundItem; |
| |
| public TestViewHolder(View itemView) { |
| super(itemView); |
| itemView.setFocusable(true); |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + " item:" + mBoundItem; |
| } |
| } |
| class DumbLayoutManager extends TestLayoutManager { |
| ReentrantLock mLayoutLock = new ReentrantLock(); |
| public void blockLayout() { |
| mLayoutLock.lock(); |
| } |
| |
| public void unblockLayout() { |
| mLayoutLock.unlock(); |
| } |
| @Override |
| public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) { |
| mLayoutLock.lock(); |
| detachAndScrapAttachedViews(recycler); |
| layoutRange(recycler, 0, state.getItemCount()); |
| if (layoutLatch != null) { |
| layoutLatch.countDown(); |
| } |
| mLayoutLock.unlock(); |
| } |
| } |
| public class TestLayoutManager extends RecyclerView.LayoutManager { |
| int mScrollVerticallyAmount; |
| int mScrollHorizontallyAmount; |
| protected CountDownLatch layoutLatch; |
| |
| public void expectLayouts(int count) { |
| layoutLatch = new CountDownLatch(count); |
| } |
| |
| public void waitForLayout(long timeout, TimeUnit timeUnit, boolean waitForIdle) |
| throws Throwable { |
| layoutLatch.await(timeout * (mDebug ? 100 : 1), timeUnit); |
| assertEquals("all expected layouts should be executed at the expected time", |
| 0, layoutLatch.getCount()); |
| if (waitForIdle) { |
| getInstrumentation().waitForIdleSync(); |
| } |
| } |
| |
| public void waitForLayout(long timeout, TimeUnit timeUnit) |
| throws Throwable { |
| waitForLayout(timeout, timeUnit, true); |
| } |
| |
| public void assertLayoutCount(int count, String msg, long timeout) throws Throwable { |
| layoutLatch.await(timeout, TimeUnit.SECONDS); |
| assertEquals(msg, count, layoutLatch.getCount()); |
| } |
| |
| public void assertNoLayout(String msg, long timeout) throws Throwable { |
| layoutLatch.await(timeout, TimeUnit.SECONDS); |
| assertFalse(msg, layoutLatch.getCount() == 0); |
| } |
| |
| public void waitForLayout(long timeout) throws Throwable { |
| waitForLayout(timeout * (mDebug ? 10000 : 1), TimeUnit.SECONDS, true); |
| } |
| |
| public void waitForLayout(long timeout, boolean waitForIdle) throws Throwable { |
| waitForLayout(timeout * (mDebug ? 10000 : 1), TimeUnit.SECONDS, waitForIdle); |
| } |
| |
| @Override |
| public RecyclerView.LayoutParams generateDefaultLayoutParams() { |
| return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, |
| ViewGroup.LayoutParams.WRAP_CONTENT); |
| } |
| |
| void assertVisibleItemPositions() { |
| int i = getChildCount(); |
| TestAdapter testAdapter = (TestAdapter) mRecyclerView.getAdapter(); |
| while (i-- > 0) { |
| View view = getChildAt(i); |
| RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams) view.getLayoutParams(); |
| Item item = ((TestViewHolder) lp.mViewHolder).mBoundItem; |
| if (mDebug) { |
| Log.d(TAG, "testing item " + i); |
| } |
| if (!lp.isItemRemoved()) { |
| RecyclerView.ViewHolder vh = mRecyclerView.getChildViewHolder(view); |
| assertSame("item position in LP should match adapter value :" + vh, |
| testAdapter.mItems.get(vh.mPosition), item); |
| } |
| } |
| } |
| |
| RecyclerView.LayoutParams getLp(View v) { |
| return (RecyclerView.LayoutParams) v.getLayoutParams(); |
| } |
| |
| protected void layoutRange(RecyclerView.Recycler recycler, int start, int end) { |
| assertScrap(recycler); |
| if (mDebug) { |
| Log.d(TAG, "will layout items from " + start + " to " + end); |
| } |
| int diff = end > start ? 1 : -1; |
| int top = 0; |
| for (int i = start; i != end; i+=diff) { |
| if (mDebug) { |
| Log.d(TAG, "laying out item " + i); |
| } |
| View view = recycler.getViewForPosition(i); |
| assertNotNull("view should not be null for valid position. " |
| + "got null view at position " + i, view); |
| if (!mRecyclerView.mState.isPreLayout()) { |
| RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) view |
| .getLayoutParams(); |
| assertFalse("In post layout, getViewForPosition should never return a view " |
| + "that is removed", layoutParams != null |
| && layoutParams.isItemRemoved()); |
| |
| } |
| assertEquals("getViewForPosition should return correct position", |
| i, getPosition(view)); |
| addView(view); |
| |
| measureChildWithMargins(view, 0, 0); |
| if (getLayoutDirection() == ViewCompat.LAYOUT_DIRECTION_RTL) { |
| layoutDecorated(view, getWidth() - getDecoratedMeasuredWidth(view), top, |
| getWidth(), top + getDecoratedMeasuredHeight(view)); |
| } else { |
| layoutDecorated(view, 0, top, getDecoratedMeasuredWidth(view) |
| , top + getDecoratedMeasuredHeight(view)); |
| } |
| |
| top += view.getMeasuredHeight(); |
| } |
| } |
| |
| private void assertScrap(RecyclerView.Recycler recycler) { |
| if (mRecyclerView.getAdapter() != null && |
| !mRecyclerView.getAdapter().hasStableIds()) { |
| for (RecyclerView.ViewHolder viewHolder : recycler.getScrapList()) { |
| assertFalse("Invalid scrap should be no kept", viewHolder.isInvalid()); |
| } |
| } |
| } |
| |
| @Override |
| public boolean canScrollHorizontally() { |
| return true; |
| } |
| |
| @Override |
| public boolean canScrollVertically() { |
| return true; |
| } |
| |
| @Override |
| public int scrollHorizontallyBy(int dx, RecyclerView.Recycler recycler, |
| RecyclerView.State state) { |
| mScrollHorizontallyAmount += dx; |
| return dx; |
| } |
| |
| @Override |
| public int scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, |
| RecyclerView.State state) { |
| mScrollVerticallyAmount += dy; |
| return dy; |
| } |
| } |
| |
| static class Item { |
| final static AtomicInteger idCounter = new AtomicInteger(0); |
| final public int mId = idCounter.incrementAndGet(); |
| |
| int mAdapterIndex; |
| |
| final String mText; |
| int mType = 0; |
| |
| Item(int adapterIndex, String text) { |
| mAdapterIndex = adapterIndex; |
| mText = text; |
| } |
| |
| @Override |
| public String toString() { |
| return "Item{" + |
| "mId=" + mId + |
| ", originalIndex=" + mAdapterIndex + |
| ", text='" + mText + '\'' + |
| '}'; |
| } |
| } |
| |
| public class TestAdapter extends RecyclerView.Adapter<TestViewHolder> |
| implements AttachDetachCountingAdapter { |
| |
| public static final String DEFAULT_ITEM_PREFIX = "Item "; |
| |
| ViewAttachDetachCounter mAttachmentCounter = new ViewAttachDetachCounter(); |
| List<Item> mItems; |
| |
| public TestAdapter(int count) { |
| mItems = new ArrayList<Item>(count); |
| addItems(0, count, DEFAULT_ITEM_PREFIX); |
| } |
| |
| private void addItems(int pos, int count, String prefix) { |
| for (int i = 0; i < count; i++, pos++) { |
| mItems.add(pos, new Item(pos, prefix)); |
| } |
| } |
| |
| @Override |
| public int getItemViewType(int position) { |
| return getItemAt(position).mType; |
| } |
| |
| @Override |
| public void onViewAttachedToWindow(TestViewHolder holder) { |
| super.onViewAttachedToWindow(holder); |
| mAttachmentCounter.onViewAttached(holder); |
| } |
| |
| @Override |
| public void onViewDetachedFromWindow(TestViewHolder holder) { |
| super.onViewDetachedFromWindow(holder); |
| mAttachmentCounter.onViewDetached(holder); |
| } |
| |
| @Override |
| public void onAttachedToRecyclerView(RecyclerView recyclerView) { |
| super.onAttachedToRecyclerView(recyclerView); |
| mAttachmentCounter.onAttached(recyclerView); |
| } |
| |
| @Override |
| public void onDetachedFromRecyclerView(RecyclerView recyclerView) { |
| super.onDetachedFromRecyclerView(recyclerView); |
| mAttachmentCounter.onDetached(recyclerView); |
| } |
| |
| @Override |
| public TestViewHolder onCreateViewHolder(ViewGroup parent, |
| int viewType) { |
| return new TestViewHolder(new TextView(parent.getContext())); |
| } |
| |
| @Override |
| public void onBindViewHolder(TestViewHolder holder, int position) { |
| assertNotNull(holder.mOwnerRecyclerView); |
| assertEquals(position, holder.getAdapterPosition()); |
| final Item item = mItems.get(position); |
| ((TextView) (holder.itemView)).setText(item.mText + "(" + item.mAdapterIndex + ")"); |
| holder.mBoundItem = item; |
| } |
| |
| public Item getItemAt(int position) { |
| return mItems.get(position); |
| } |
| |
| @Override |
| public void onViewRecycled(TestViewHolder holder) { |
| super.onViewRecycled(holder); |
| final int adapterPosition = holder.getAdapterPosition(); |
| final boolean shouldHavePosition = !holder.isRemoved() && holder.isBound() && |
| !holder.isAdapterPositionUnknown() && !holder.isInvalid(); |
| String log = "Position check for " + holder.toString(); |
| assertEquals(log, shouldHavePosition, adapterPosition != RecyclerView.NO_POSITION); |
| if (shouldHavePosition) { |
| assertTrue(log, mItems.size() > adapterPosition); |
| assertSame(log, holder.mBoundItem, mItems.get(adapterPosition)); |
| } |
| } |
| |
| public void deleteAndNotify(final int start, final int count) throws Throwable { |
| deleteAndNotify(new int[]{start, count}); |
| } |
| |
| /** |
| * Deletes items in the given ranges. |
| * <p> |
| * Note that each operation affects the one after so you should offset them properly. |
| * <p> |
| * For example, if adapter has 5 items (A,B,C,D,E), and then you call this method with |
| * <code>[1, 2],[2, 1]</code>, it will first delete items B,C and the new adapter will be |
| * A D E. Then it will delete 2,1 which means it will delete E. |
| */ |
| public void deleteAndNotify(final int[]... startCountTuples) throws Throwable { |
| for (int[] tuple : startCountTuples) { |
| tuple[1] = -tuple[1]; |
| } |
| new AddRemoveRunnable(startCountTuples).runOnMainThread(); |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return hasStableIds() ? mItems.get(position).mId : super.getItemId(position); |
| } |
| |
| public void offsetOriginalIndices(int start, int offset) { |
| for (int i = start; i < mItems.size(); i++) { |
| mItems.get(i).mAdapterIndex += offset; |
| } |
| } |
| |
| /** |
| * @param start inclusive |
| * @param end exclusive |
| * @param offset |
| */ |
| public void offsetOriginalIndicesBetween(int start, int end, int offset) { |
| for (int i = start; i < end && i < mItems.size(); i++) { |
| mItems.get(i).mAdapterIndex += offset; |
| } |
| } |
| |
| public void addAndNotify(final int count) throws Throwable { |
| assertEquals(0, mItems.size()); |
| new AddRemoveRunnable(DEFAULT_ITEM_PREFIX, new int[]{0, count}).runOnMainThread(); |
| } |
| |
| public void addAndNotify(final int start, final int count) throws Throwable { |
| addAndNotify(new int[]{start, count}); |
| } |
| |
| public void addAndNotify(final int[]... startCountTuples) throws Throwable { |
| new AddRemoveRunnable(startCountTuples).runOnMainThread(); |
| } |
| |
| public void dispatchDataSetChanged() throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| notifyDataSetChanged(); |
| } |
| }); |
| } |
| |
| public void changeAndNotify(final int start, final int count) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| notifyItemRangeChanged(start, count); |
| } |
| }); |
| } |
| |
| public void changeAndNotifyWithPayload(final int start, final int count, |
| final Object payload) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| notifyItemRangeChanged(start, count, payload); |
| } |
| }); |
| } |
| |
| public void changePositionsAndNotify(final int... positions) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| for (int i = 0; i < positions.length; i += 1) { |
| TestAdapter.super.notifyItemRangeChanged(positions[i], 1); |
| } |
| } |
| }); |
| } |
| |
| /** |
| * Similar to other methods but negative count means delete and position count means add. |
| * <p> |
| * For instance, calling this method with <code>[1,1], [2,-1]</code> it will first add an |
| * item to index 1, then remove an item from index 2 (updated index 2) |
| */ |
| public void addDeleteAndNotify(final int[]... startCountTuples) throws Throwable { |
| new AddRemoveRunnable(startCountTuples).runOnMainThread(); |
| } |
| |
| @Override |
| public int getItemCount() { |
| return mItems.size(); |
| } |
| |
| /** |
| * Uses notifyDataSetChanged |
| */ |
| public void moveItems(boolean notifyChange, int[]... fromToTuples) throws Throwable { |
| for (int i = 0; i < fromToTuples.length; i += 1) { |
| int[] tuple = fromToTuples[i]; |
| moveItem(tuple[0], tuple[1], false); |
| } |
| if (notifyChange) { |
| dispatchDataSetChanged(); |
| } |
| } |
| |
| /** |
| * Uses notifyDataSetChanged |
| */ |
| public void moveItem(final int from, final int to, final boolean notifyChange) |
| throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| moveInUIThread(from, to); |
| if (notifyChange) { |
| notifyDataSetChanged(); |
| } |
| } |
| }); |
| } |
| |
| /** |
| * Uses notifyItemMoved |
| */ |
| public void moveAndNotify(final int from, final int to) throws Throwable { |
| runTestOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| moveInUIThread(from, to); |
| notifyItemMoved(from, to); |
| } |
| }); |
| } |
| |
| public void clearOnUIThread() { |
| assertEquals("clearOnUIThread called from a wrong thread", |
| Looper.getMainLooper(), Looper.myLooper()); |
| mItems = new ArrayList<Item>(); |
| notifyDataSetChanged(); |
| } |
| |
| protected void moveInUIThread(int from, int to) { |
| Item item = mItems.remove(from); |
| offsetOriginalIndices(from, -1); |
| mItems.add(to, item); |
| offsetOriginalIndices(to + 1, 1); |
| item.mAdapterIndex = to; |
| } |
| |
| |
| @Override |
| public ViewAttachDetachCounter getCounter() { |
| return mAttachmentCounter; |
| } |
| |
| |
| private class AddRemoveRunnable implements Runnable { |
| final String mNewItemPrefix; |
| final int[][] mStartCountTuples; |
| |
| public AddRemoveRunnable(String newItemPrefix, int[]... startCountTuples) { |
| mNewItemPrefix = newItemPrefix; |
| mStartCountTuples = startCountTuples; |
| } |
| |
| public AddRemoveRunnable(int[][] startCountTuples) { |
| this("new item ", startCountTuples); |
| } |
| |
| public void runOnMainThread() throws Throwable { |
| if (Looper.myLooper() == Looper.getMainLooper()) { |
| run(); |
| } else { |
| runTestOnUiThread(this); |
| } |
| } |
| |
| @Override |
| public void run() { |
| for (int[] tuple : mStartCountTuples) { |
| if (tuple[1] < 0) { |
| delete(tuple); |
| } else { |
| add(tuple); |
| } |
| } |
| } |
| |
| private void add(int[] tuple) { |
| // offset others |
| offsetOriginalIndices(tuple[0], tuple[1]); |
| addItems(tuple[0], tuple[1], mNewItemPrefix); |
| notifyItemRangeInserted(tuple[0], tuple[1]); |
| } |
| |
| private void delete(int[] tuple) { |
| final int count = -tuple[1]; |
| offsetOriginalIndices(tuple[0] + count, tuple[1]); |
| for (int i = 0; i < count; i++) { |
| mItems.remove(tuple[0]); |
| } |
| notifyItemRangeRemoved(tuple[0], count); |
| } |
| } |
| } |
| |
| public boolean isMainThread() { |
| return Looper.myLooper() == Looper.getMainLooper(); |
| } |
| |
| @Override |
| public void runTestOnUiThread(Runnable r) throws Throwable { |
| if (Looper.myLooper() == Looper.getMainLooper()) { |
| r.run(); |
| } else { |
| super.runTestOnUiThread(r); |
| } |
| } |
| |
| static class TargetTuple { |
| |
| final int mPosition; |
| |
| final int mLayoutDirection; |
| |
| TargetTuple(int position, int layoutDirection) { |
| this.mPosition = position; |
| this.mLayoutDirection = layoutDirection; |
| } |
| |
| @Override |
| public String toString() { |
| return "TargetTuple{" + |
| "mPosition=" + mPosition + |
| ", mLayoutDirection=" + mLayoutDirection + |
| '}'; |
| } |
| } |
| |
| public interface AttachDetachCountingAdapter { |
| |
| ViewAttachDetachCounter getCounter(); |
| } |
| |
| public class ViewAttachDetachCounter { |
| |
| Set<RecyclerView.ViewHolder> mAttachedSet = new HashSet<RecyclerView.ViewHolder>(); |
| |
| public void validateRemaining(RecyclerView recyclerView) { |
| final int childCount = recyclerView.getChildCount(); |
| for (int i = 0; i < childCount; i++) { |
| View view = recyclerView.getChildAt(i); |
| RecyclerView.ViewHolder vh = recyclerView.getChildViewHolder(view); |
| assertTrue("remaining view should be in attached set " + vh, |
| mAttachedSet.contains(vh)); |
| } |
| assertEquals("there should not be any views left in attached set", |
| childCount, mAttachedSet.size()); |
| } |
| |
| public void onViewDetached(RecyclerView.ViewHolder viewHolder) { |
| try { |
| assertTrue("view holder should be in attached set", |
| mAttachedSet.remove(viewHolder)); |
| } catch (Throwable t) { |
| postExceptionToInstrumentation(t); |
| } |
| } |
| |
| public void onViewAttached(RecyclerView.ViewHolder viewHolder) { |
| try { |
| assertTrue("view holder should not be in attached set", |
| mAttachedSet.add(viewHolder)); |
| } catch (Throwable t) { |
| postExceptionToInstrumentation(t); |
| } |
| } |
| |
| public void onAttached(RecyclerView recyclerView) { |
| // when a new RV is attached, clear the set and add all view holders |
| mAttachedSet.clear(); |
| final int childCount = recyclerView.getChildCount(); |
| for (int i = 0; i < childCount; i ++) { |
| View view = recyclerView.getChildAt(i); |
| mAttachedSet.add(recyclerView.getChildViewHolder(view)); |
| } |
| } |
| |
| public void onDetached(RecyclerView recyclerView) { |
| validateRemaining(recyclerView); |
| } |
| } |
| } |
