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 java.lang.reflect.Field;
  21 import java.util.Optional;
  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 @SuppressWarnings("checkstyle:IllegalCatch")
  29 public class SnapshotBackedReadTransactionTest {
  30
  31     private static final DataTreeSnapshot DATA_TREE_SNAPSHOT = mock(DataTreeSnapshot.class);
  32     private static SnapshotBackedReadTransaction<Object> snapshotBackedReadTransaction =
  33             new SnapshotBackedReadTransaction<>(new Object(), false, DATA_TREE_SNAPSHOT);
  34
  35     @Test
  36     public void basicTest() throws Exception {
  37         final NormalizedNode<?, ?> testNode = mock(NormalizedNode.class);
  38         final Optional<NormalizedNode<?, ?>> optional = Optional.of(testNode);
  39         doReturn("testNode").when(testNode).toString();
  40         doReturn(java.util.Optional.of(testNode)).when(DATA_TREE_SNAPSHOT).readNode(YangInstanceIdentifier.EMPTY);
  41         assertTrue(snapshotBackedReadTransaction.exists(YangInstanceIdentifier.EMPTY).get());
  42
  43         assertEquals(optional, snapshotBackedReadTransaction.read(YangInstanceIdentifier.EMPTY).get());
  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     @SuppressWarnings({ "checkstyle:IllegalThrows", "checkstyle:avoidHidingCauseException" })
  55     @Test(expected = ReadFailedException.class)
  56     public void readTestWithException() throws Throwable {
  57         snapshotBackedReadTransaction.close();
  58         try {
  59             snapshotBackedReadTransaction.read(YangInstanceIdentifier.EMPTY).get();
  60             fail("Expected ReadFailedException");
  61         } catch (Exception e) {
  62             throw e.getCause();
  63         }
  64     }
  65
  66     @SuppressWarnings({ "checkstyle:IllegalThrows", "checkstyle:avoidHidingCauseException" })
  67     @Test(expected = ReadFailedException.class)
  68     public void readNodeTestWithException() throws Throwable {
  69         doThrow(new NullPointerException("no Node")).when(DATA_TREE_SNAPSHOT).readNode(any());
  70         snapshotBackedReadTransaction = new SnapshotBackedReadTransaction<>(new Object(), false, DATA_TREE_SNAPSHOT);
  71         try {
  72             snapshotBackedReadTransaction.read(YangInstanceIdentifier.EMPTY).get();
  73             fail("Expected ReadFailedException");
  74         } catch (Exception e) {
  75             throw e.getCause();
  76         }
  77     }
  78
  79     @SuppressWarnings({ "checkstyle:IllegalThrows", "checkstyle:avoidHidingCauseException" })
  80     @Test(expected = ReadFailedException.class)
  81     public void existsTestWithException() throws Throwable  {
  82         doThrow(new NullPointerException("no Node")).when(DATA_TREE_SNAPSHOT).readNode(any());
  83
  84         try {
  85             snapshotBackedReadTransaction.exists(YangInstanceIdentifier.EMPTY).get();
  86             fail("Expected ReadFailedException");
  87         } catch (Exception e) {
  88             throw e.getCause();
  89         }
  90     }
  91 }