dom/mdsal-dom-spi/src/test/java/org/opendaylight/mdsal/dom/spi/store/SnapshotBackedReadTransactionTest.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.mdsal.dom.spi.store;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.assertNotNull;
  12 import static org.junit.Assert.assertNull;
  13 import static org.junit.Assert.assertTrue;
  14 import static org.junit.Assert.fail;
  15 import static org.mockito.Matchers.any;
  16 import static org.mockito.Mockito.doReturn;
  17 import static org.mockito.Mockito.doThrow;
  18 import static org.mockito.Mockito.mock;
  19
  20 import com.google.common.base.Optional;
  21 import java.lang.reflect.Field;
  22 import org.junit.Test;
  23 import org.opendaylight.mdsal.common.api.ReadFailedException;
  24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  25 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  26 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
  27
  28 public class SnapshotBackedReadTransactionTest {
  29
  30     private static final DataTreeSnapshot DATA_TREE_SNAPSHOT = mock(DataTreeSnapshot.class);
  31     private static SnapshotBackedReadTransaction snapshotBackedReadTransaction =
  32             new SnapshotBackedReadTransaction<>(new Object(), false, DATA_TREE_SNAPSHOT);
  33
  34     @Test
  35     public void basicTest() throws Exception {
  36         final NormalizedNode<?, ?> testNode = mock(NormalizedNode.class);
  37         final Optional<NormalizedNode> optional = Optional.of(testNode);
  38         doReturn("testNode").when(testNode).toString();
  39         doReturn(optional).when(DATA_TREE_SNAPSHOT).readNode(YangInstanceIdentifier.EMPTY);
  40         assertTrue((Boolean) snapshotBackedReadTransaction.exists(YangInstanceIdentifier.EMPTY).get());
  41
  42         assertEquals(optional, snapshotBackedReadTransaction.read(YangInstanceIdentifier.EMPTY).get());
  43
  44         final Field stableSnapshotField = SnapshotBackedReadTransaction.class.getDeclaredField("stableSnapshot");
  45         stableSnapshotField.setAccessible(true);
  46
  47         DataTreeSnapshot stableSnapshot = (DataTreeSnapshot) stableSnapshotField.get(snapshotBackedReadTransaction);
  48         assertNotNull(stableSnapshot);
  49         snapshotBackedReadTransaction.close();
  50         stableSnapshot = (DataTreeSnapshot) stableSnapshotField.get(snapshotBackedReadTransaction);
  51         assertNull(stableSnapshot);
  52     }
  53
  54     @Test(expected = ReadFailedException.class)
  55     public void readTestWithException() throws Throwable {
  56         snapshotBackedReadTransaction.close();
  57         try {
  58             snapshotBackedReadTransaction.read(YangInstanceIdentifier.EMPTY).get();
  59             fail("Expected ReadFailedException");
  60         } catch (Exception e) {
  61             throw e.getCause();
  62         }
  63     }
  64
  65     @Test(expected = ReadFailedException.class)
  66     public void readNodeTestWithException() throws Throwable {
  67         doThrow(new NullPointerException("no Node")).when(DATA_TREE_SNAPSHOT).readNode(any());
  68         snapshotBackedReadTransaction = new SnapshotBackedReadTransaction<>(new Object(), false, DATA_TREE_SNAPSHOT);
  69         try {
  70             snapshotBackedReadTransaction.read(YangInstanceIdentifier.EMPTY).get();
  71             fail("Expected ReadFailedException");
  72         } catch (Exception e) {
  73             throw e.getCause();
  74         }
  75     }
  76
  77     @Test(expected = ReadFailedException.class)
  78     public void existsTestWithException() throws Throwable {
  79         doThrow(new NullPointerException("no Node")).when(DATA_TREE_SNAPSHOT).readNode(any());
  80
  81         try {
  82             snapshotBackedReadTransaction.exists(YangInstanceIdentifier.EMPTY).get();
  83             fail("Expected ReadFailedException");
  84         } catch (Exception e) {
  85             throw e.getCause();
  86         }
  87     }
  88 }