| /* |
| * Copyright (C) 2015 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.setupwizardlib.test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertSame; |
| |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.PorterDuff; |
| import android.graphics.PorterDuffXfermode; |
| import android.graphics.drawable.ColorDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.support.test.InstrumentationRegistry; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| import android.support.v7.widget.LinearLayoutManager; |
| import android.support.v7.widget.RecyclerView; |
| import android.view.View; |
| import android.view.ViewGroup; |
| |
| import com.android.setupwizardlib.DividerItemDecoration; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| public class DividerItemDecorationTest { |
| |
| @Test |
| public void testDivider() { |
| final DividerItemDecoration decoration = new DividerItemDecoration(); |
| Drawable divider = new ColorDrawable(); |
| decoration.setDivider(divider); |
| assertSame("Divider should be same as set", divider, decoration.getDivider()); |
| } |
| |
| @Test |
| public void testDividerHeight() { |
| final DividerItemDecoration decoration = new DividerItemDecoration(); |
| decoration.setDividerHeight(123); |
| assertEquals("Divider height should be 123", 123, decoration.getDividerHeight()); |
| } |
| |
| @Test |
| public void testShouldDrawDividerBelowWithEitherCondition() { |
| // Set up the item decoration, with 1px red divider line |
| final DividerItemDecoration decoration = new DividerItemDecoration(); |
| Drawable divider = new ColorDrawable(Color.RED); |
| decoration.setDivider(divider); |
| decoration.setDividerHeight(1); |
| |
| Bitmap bitmap = drawDecoration(decoration, true, true); |
| |
| // Draw the expected result on a bitmap |
| Bitmap expectedBitmap = Bitmap.createBitmap(20, 20, Bitmap.Config.ARGB_4444); |
| Canvas expectedCanvas = new Canvas(expectedBitmap); |
| Paint paint = new Paint(); |
| paint.setColor(Color.RED); |
| expectedCanvas.drawRect(0, 5, 20, 6, paint); |
| expectedCanvas.drawRect(0, 10, 20, 11, paint); |
| expectedCanvas.drawRect(0, 15, 20, 16, paint); |
| // Compare the two bitmaps |
| assertBitmapEquals(expectedBitmap, bitmap); |
| |
| bitmap.recycle(); |
| bitmap = drawDecoration(decoration, false, true); |
| // should still be the same. |
| assertBitmapEquals(expectedBitmap, bitmap); |
| |
| bitmap.recycle(); |
| bitmap = drawDecoration(decoration, true, false); |
| // last item should not have a divider below it now |
| paint.setColor(Color.TRANSPARENT); |
| paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); |
| expectedCanvas.drawRect(0, 15, 20, 16, paint); |
| assertBitmapEquals(expectedBitmap, bitmap); |
| |
| bitmap.recycle(); |
| bitmap = drawDecoration(decoration, false, false); |
| // everything should be transparent now |
| expectedCanvas.drawRect(0, 5, 20, 6, paint); |
| expectedCanvas.drawRect(0, 10, 20, 11, paint); |
| assertBitmapEquals(expectedBitmap, bitmap); |
| |
| } |
| |
| @Test |
| public void testShouldDrawDividerBelowWithBothCondition() { |
| // Set up the item decoration, with 1px green divider line |
| final DividerItemDecoration decoration = new DividerItemDecoration(); |
| Drawable divider = new ColorDrawable(Color.GREEN); |
| decoration.setDivider(divider); |
| decoration.setDividerHeight(1); |
| decoration.setDividerCondition(DividerItemDecoration.DIVIDER_CONDITION_BOTH); |
| |
| Bitmap bitmap = drawDecoration(decoration, true, true); |
| Paint paint = new Paint(); |
| paint.setColor(Color.GREEN); |
| paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.ADD)); |
| Bitmap expectedBitmap = Bitmap.createBitmap(20, 20, Bitmap.Config.ARGB_4444); |
| Canvas expectedCanvas = new Canvas(expectedBitmap); |
| expectedCanvas.drawRect(0, 5, 20, 6, paint); |
| expectedCanvas.drawRect(0, 10, 20, 11, paint); |
| expectedCanvas.drawRect(0, 15, 20, 16, paint); |
| // Should have all the dividers |
| assertBitmapEquals(expectedBitmap, bitmap); |
| |
| bitmap.recycle(); |
| bitmap = drawDecoration(decoration, false, true); |
| paint.setColor(Color.TRANSPARENT); |
| paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); |
| expectedCanvas.drawRect(0, 5, 20, 6, paint); |
| expectedCanvas.drawRect(0, 10, 20, 11, paint); |
| assertBitmapEquals(expectedBitmap, bitmap); |
| |
| bitmap.recycle(); |
| bitmap = drawDecoration(decoration, true, false); |
| // nothing should be drawn now. |
| expectedCanvas.drawRect(0, 15, 20, 16, paint); |
| assertBitmapEquals(expectedBitmap, bitmap); |
| |
| bitmap.recycle(); |
| bitmap = drawDecoration(decoration, false, false); |
| assertBitmapEquals(expectedBitmap, bitmap); |
| } |
| |
| private Bitmap drawDecoration(DividerItemDecoration decoration, final boolean allowDividerAbove, |
| final boolean allowDividerBelow) { |
| // Set up the canvas to be drawn |
| Bitmap bitmap = Bitmap.createBitmap(20, 20, Bitmap.Config.ARGB_4444); |
| Canvas canvas = new Canvas(bitmap); |
| |
| final Context context = InstrumentationRegistry.getContext(); |
| // Set up recycler view with vertical linear layout manager |
| RecyclerView testRecyclerView = new RecyclerView(context); |
| testRecyclerView.setLayoutManager(new LinearLayoutManager(context)); |
| |
| // Set up adapter with 3 items, each 5px tall |
| testRecyclerView.setAdapter(new RecyclerView.Adapter() { |
| @Override |
| public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) { |
| final View itemView = new View(context); |
| itemView.setMinimumWidth(20); |
| itemView.setMinimumHeight(5); |
| return ViewHolder.createInstance(itemView, allowDividerAbove, allowDividerBelow); |
| } |
| |
| @Override |
| public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int i) { |
| } |
| |
| @Override |
| public int getItemCount() { |
| return 3; |
| } |
| }); |
| |
| testRecyclerView.layout(0, 0, 20, 20); |
| decoration.onDraw(canvas, testRecyclerView, null); |
| return bitmap; |
| } |
| |
| private void assertBitmapEquals(Bitmap expected, Bitmap actual) { |
| assertEquals("Width should be the same", expected.getWidth(), actual.getWidth()); |
| assertEquals("Height should be the same", expected.getHeight(), actual.getHeight()); |
| for (int x = 0; x < expected.getWidth(); x++) { |
| for (int y = 0; y < expected.getHeight(); y++) { |
| assertEquals("Pixel at (" + x + ", " + y + ") should be the same", |
| expected.getPixel(x, y), actual.getPixel(x, y)); |
| } |
| } |
| } |
| |
| private static class ViewHolder extends RecyclerView.ViewHolder |
| implements DividerItemDecoration.DividedViewHolder { |
| |
| private boolean mAllowDividerAbove; |
| private boolean mAllowDividerBelow; |
| |
| public static ViewHolder createInstance(View itemView, boolean allowDividerAbove, |
| boolean allowDividerBelow) { |
| return new ViewHolder(itemView, allowDividerAbove, allowDividerBelow); |
| } |
| |
| private ViewHolder(View itemView, boolean allowDividerAbove, boolean allowDividerBelow) { |
| super(itemView); |
| mAllowDividerAbove = allowDividerAbove; |
| mAllowDividerBelow = allowDividerBelow; |
| } |
| |
| @Override |
| public boolean isDividerAllowedAbove() { |
| return mAllowDividerAbove; |
| } |
| |
| @Override |
| public boolean isDividerAllowedBelow() { |
| return mAllowDividerBelow; |
| } |
| } |
| } |