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.ArgumentMatchers.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.tree.api.DataTreeSnapshot;
  27
  28 @SuppressWarnings("checkstyle:IllegalCatch")
  29 public class SnapshotBackedReadTransactionTest {
  30
  31     private static final DataTreeSnapshot DATA_TREE_SNAPSHOT = mock(DataTreeSnapshot.class);
  32
  33     private SnapshotBackedReadTransaction<Object> snapshotBackedReadTransaction =
  34             new SnapshotBackedReadTransaction<>(new Object(), false, DATA_TREE_SNAPSHOT, null);
  35
  36     @Test
  37     public void basicTest() throws Exception {
  38         final NormalizedNode testNode = mock(NormalizedNode.class);
  39         final Optional<NormalizedNode> optional = Optional.of(testNode);
  40         doReturn("testNode").when(testNode).toString();
  41         doReturn(Optional.of(testNode)).when(DATA_TREE_SNAPSHOT).readNode(YangInstanceIdentifier.empty());
  42         assertTrue(snapshotBackedReadTransaction.exists(YangInstanceIdentifier.empty()).get());
  43
  44         assertEquals(optional, snapshotBackedReadTransaction.read(YangInstanceIdentifier.empty()).get());
  45         final Field stableSnapshotField = SnapshotBackedReadTransaction.class.getDeclaredField("stableSnapshot");
  46         stableSnapshotField.setAccessible(true);
  47
  48         DataTreeSnapshot stableSnapshot = (DataTreeSnapshot) stableSnapshotField.get(snapshotBackedReadTransaction);
  49         assertNotNull(stableSnapshot);
  50         snapshotBackedReadTransaction.close();
  51         stableSnapshot = (DataTreeSnapshot) stableSnapshotField.get(snapshotBackedReadTransaction);
  52         assertNull(stableSnapshot);
  53     }
  54
  55     @SuppressWarnings({ "checkstyle:IllegalThrows", "checkstyle:avoidHidingCauseException" })
  56     @Test(expected = ReadFailedException.class)
  57     public void readTestWithException() throws Throwable {
  58         snapshotBackedReadTransaction.close();
  59         try {
  60             snapshotBackedReadTransaction.read(YangInstanceIdentifier.empty()).get();
  61             fail("Expected ReadFailedException");
  62         } catch (Exception e) {
  63             throw e.getCause();
  64         }
  65     }
  66
  67     @SuppressWarnings({ "checkstyle:IllegalThrows", "checkstyle:avoidHidingCauseException" })
  68     @Test(expected = ReadFailedException.class)
  69     public void readNodeTestWithException() throws Throwable {
  70         doThrow(new NullPointerException("no Node")).when(DATA_TREE_SNAPSHOT).readNode(any());
  71         snapshotBackedReadTransaction = new SnapshotBackedReadTransaction<>(new Object(), false, DATA_TREE_SNAPSHOT,
  72                 null);
  73         try {
  74             snapshotBackedReadTransaction.read(YangInstanceIdentifier.empty()).get();
  75             fail("Expected ReadFailedException");
  76         } catch (Exception e) {
  77             throw e.getCause();
  78         }
  79     }
  80
  81     @SuppressWarnings({ "checkstyle:IllegalThrows", "checkstyle:avoidHidingCauseException" })
  82     @Test(expected = ReadFailedException.class)
  83     public void existsTestWithException() throws Throwable  {
  84         doThrow(new NullPointerException("no Node")).when(DATA_TREE_SNAPSHOT).readNode(any());
  85
  86         try {
  87             snapshotBackedReadTransaction.exists(YangInstanceIdentifier.empty()).get();
  88             fail("Expected ReadFailedException");
  89         } catch (Exception e) {
  90             throw e.getCause();
  91         }
  92     }
  93 }