| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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 org.apache.geode.internal.offheap; |
| |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| |
| public class MemoryInspectorImplJUnitTest { |
| |
| private FreeListManager freeList; |
| private MemoryInspector inspector; |
| |
| @Before |
| public void setUp() { |
| freeList = mock(FreeListManager.class); |
| inspector = new MemoryInspectorImpl(freeList); |
| } |
| |
| @Test |
| public void getSnapshotBeforeCreateSnapshotReturnsEmptyList() { |
| assertTrue(inspector.getSnapshot().isEmpty()); |
| } |
| |
| @Test |
| public void getAllBlocksBeforeCreateSnapshotReturnsEmptyList() { |
| assertTrue(inspector.getAllBlocks().isEmpty()); |
| } |
| |
| @Test |
| public void getAllocatedBlocksBeforeCreateSnapshotReturnsEmptyList() { |
| assertTrue(inspector.getAllocatedBlocks().isEmpty()); |
| } |
| |
| @Test |
| public void getFirstBlockBeforeCreateSnapshotReturnsNull() { |
| assertNull(inspector.getFirstBlock()); |
| } |
| |
| @Test |
| public void getBlockAfterWithNullBeforeCreateSnapshotReturnsNull() { |
| assertNull(inspector.getBlockAfter(null)); |
| } |
| |
| @Test |
| public void getBlockAfterBeforeCreateSnapshotReturnsNull() { |
| MemoryBlock block = mock(MemoryBlock.class); |
| assertNull(inspector.getBlockAfter(block)); |
| } |
| |
| @Test |
| public void canClearUncreatedSnapshot() { |
| inspector.clearSnapshot(); |
| assertTrue(inspector.getSnapshot().isEmpty()); |
| } |
| |
| private void createSnapshot(List<MemoryBlock> memoryBlocks) { |
| when(freeList.getOrderedBlocks()).thenReturn(memoryBlocks); |
| inspector.createSnapshot(); |
| } |
| |
| @Test |
| public void createSnapshotCallsGetOrderedBlocks() { |
| List<MemoryBlock> emptyList = new ArrayList<>(); |
| createSnapshot(emptyList); |
| verify(freeList, times(1)).getOrderedBlocks(); |
| assertSame(emptyList, inspector.getSnapshot()); |
| } |
| |
| @Test |
| public void createSnapshotIsIdempotent() { |
| List<MemoryBlock> emptyList = new ArrayList<>(); |
| createSnapshot(emptyList); |
| when(freeList.getOrderedBlocks()).thenReturn(null); |
| inspector.createSnapshot(); |
| verify(freeList, times(1)).getOrderedBlocks(); |
| assertSame(emptyList, inspector.getSnapshot()); |
| } |
| |
| @Test |
| public void clearSnapshotAfterCreatingOneReturnsEmptyList() { |
| List<MemoryBlock> emptyList = new ArrayList<>(); |
| createSnapshot(emptyList); |
| |
| inspector.clearSnapshot(); |
| assertTrue(inspector.getSnapshot().isEmpty()); |
| } |
| |
| @Test |
| public void getFirstBlockReturnsFirstBlockFromSnapshot() { |
| List<MemoryBlock> fakeSnapshot = setupFakeSnapshot(); |
| |
| assertSame(fakeSnapshot.get(0), inspector.getFirstBlock()); |
| } |
| |
| @Test |
| public void getFirstBlockAfterReturnsCorrectBlock() { |
| List<MemoryBlock> fakeSnapshot = setupFakeSnapshot(); |
| |
| assertSame(fakeSnapshot.get(1), inspector.getBlockAfter(fakeSnapshot.get(0))); |
| } |
| |
| @Test |
| public void getFirstBlockAfterReturnsNullForLastBlock() { |
| List<MemoryBlock> fakeSnapshot = setupFakeSnapshot(); |
| |
| assertNull(inspector.getBlockAfter(fakeSnapshot.get(1))); |
| } |
| |
| private List<MemoryBlock> setupFakeSnapshot() { |
| MemoryBlock mock1 = mock(MemoryBlock.class); |
| MemoryBlock mock2 = mock(MemoryBlock.class); |
| List<MemoryBlock> memoryBlocks = new ArrayList<>(); |
| memoryBlocks.add(mock1); |
| memoryBlocks.add(mock2); |
| createSnapshot(memoryBlocks); |
| return memoryBlocks; |
| } |
| } |