| /* |
| * Copyright 2017 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 androidx.recyclerview.selection; |
| |
| import static androidx.recyclerview.selection.Range.TYPE_PRIMARY; |
| import static androidx.recyclerview.selection.Range.TYPE_PROVISIONAL; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import androidx.recyclerview.selection.testing.TestData; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.List; |
| import java.util.Stack; |
| |
| /** |
| * MouseInputDelegate / SelectHelper integration test covering the shared |
| * responsibility of range selection. |
| */ |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| public final class RangeTest { |
| |
| private static final List<String> ITEMS = TestData.createStringData(100); |
| |
| private RangeSpy mSpy; |
| private Stack<Capture> mOperations; |
| private Range mRange; |
| |
| @Before |
| public void setUp() { |
| mOperations = new Stack<>(); |
| mSpy = new RangeSpy(mOperations); |
| } |
| |
| @Test |
| public void testEstablishRange() { |
| mRange = new Range(0, mSpy); |
| mRange.extendRange(5, TYPE_PRIMARY); |
| |
| // Origin is expected to have already been selected. |
| mOperations.pop().assertChanged(1, 5, true); |
| } |
| |
| @Test |
| public void testExpandRange() { |
| mRange = new Range(0, mSpy); |
| mRange.extendRange(5, TYPE_PRIMARY); |
| mRange.extendRange(10, TYPE_PRIMARY); |
| |
| mOperations.pop().assertChanged(6, 10, true); |
| } |
| |
| @Test |
| public void testContractRange() { |
| mRange = new Range(0, mSpy); |
| mRange.extendRange(10, TYPE_PRIMARY); |
| mRange.extendRange(5, TYPE_PRIMARY); |
| mOperations.pop().assertChanged(6, 10, false); |
| } |
| |
| |
| @Test |
| public void testFlipRange_InitiallyDescending() { |
| mRange = new Range(10, mSpy); |
| mRange.extendRange(20, TYPE_PRIMARY); |
| mRange.extendRange(5, TYPE_PRIMARY); |
| |
| // When a revision results in a flip two changes |
| // are sent to the callback. 1 to unselect the old items |
| // and one to select the new items. |
| mOperations.pop().assertChanged(5, 9, true); |
| // note that range never modifies the anchor. |
| mOperations.pop().assertChanged(11, 20, false); |
| } |
| |
| @Test |
| public void testFlipRange_InitiallyAscending() { |
| mRange = new Range(10, mSpy); |
| mRange.extendRange(5, TYPE_PRIMARY); |
| mRange.extendRange(20, TYPE_PRIMARY); |
| |
| // When a revision results in a flip two changes |
| // are sent to the callback. 1 to unselect the old items |
| // and one to select the new items. |
| mOperations.pop().assertChanged(11, 20, true); |
| // note that range never modifies the anchor. |
| mOperations.pop().assertChanged(5, 9, false); |
| } |
| |
| // NOTE: The operation type is conveyed among methods, then |
| // returned to the caller. It's more of something we coury |
| // for the caller. So we won't verify courying the value |
| // with all behaviors. Just this once. |
| @Test |
| public void testCouriesRangeType() { |
| mRange = new Range(0, mSpy); |
| |
| mRange.extendRange(5, TYPE_PRIMARY); |
| mOperations.pop().assertType(TYPE_PRIMARY); |
| |
| mRange.extendRange(10, TYPE_PROVISIONAL); |
| mOperations.pop().assertType(TYPE_PROVISIONAL); |
| } |
| |
| private static class Capture { |
| |
| private int mBegin; |
| private int mEnd; |
| private boolean mSelected; |
| private int mType; |
| |
| private Capture(int begin, int end, boolean selected, int type) { |
| mBegin = begin; |
| mEnd = end; |
| mSelected = selected; |
| mType = type; |
| } |
| |
| private void assertType(int expected) { |
| assertEquals(expected, mType); |
| } |
| |
| private void assertChanged(int begin, int end, boolean selected) { |
| assertEquals(begin, mBegin); |
| assertEquals(end, mEnd); |
| assertEquals(selected, mSelected); |
| } |
| } |
| |
| private static final class RangeSpy extends Range.Callbacks { |
| |
| private final Stack<Capture> mOperations; |
| |
| RangeSpy(Stack<Capture> operations) { |
| mOperations = operations; |
| } |
| |
| @Override |
| void updateForRange(int begin, int end, boolean selected, int type) { |
| mOperations.push(new Capture(begin, end, selected, type)); |
| } |
| |
| Capture popOp() { |
| return mOperations.pop(); |
| } |
| } |
| } |