org.spearce.jgit.test/tst/org/spearce/jgit/treewalk/EmptyTreeIteratorTest.java

   1 /*
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   4  * All rights reserved.
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   7  * without modification, are permitted provided that the following
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  13  * - Redistributions in binary form must reproduce the above
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  24  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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  37
  38 package org.spearce.jgit.treewalk;
  39
  40 import org.spearce.jgit.lib.ObjectId;
  41 import org.spearce.jgit.lib.RepositoryTestCase;
  42
  43 public class EmptyTreeIteratorTest extends RepositoryTestCase {
  44         public void testAtEOF() throws Exception {
  45                 final EmptyTreeIterator etp = new EmptyTreeIterator();
  46                 assertTrue(etp.first());
  47                 assertTrue(etp.eof());
  48         }
  49
  50         public void testCreateSubtreeIterator() throws Exception {
  51                 final EmptyTreeIterator etp = new EmptyTreeIterator();
  52                 final AbstractTreeIterator sub = etp.createSubtreeIterator(db);
  53                 assertNotNull(sub);
  54                 assertTrue(sub.first());
  55                 assertTrue(sub.eof());
  56                 assertTrue(sub instanceof EmptyTreeIterator);
  57         }
  58
  59         public void testEntryObjectId() throws Exception {
  60                 final EmptyTreeIterator etp = new EmptyTreeIterator();
  61                 assertSame(ObjectId.zeroId(), etp.getEntryObjectId());
  62                 assertNotNull(etp.idBuffer());
  63                 assertEquals(0, etp.idOffset());
  64                 assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer()));
  65         }
  66
  67         public void testNextDoesNothing() throws Exception {
  68                 final EmptyTreeIterator etp = new EmptyTreeIterator();
  69                 etp.next(1);
  70                 assertTrue(etp.first());
  71                 assertTrue(etp.eof());
  72                 assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer()));
  73
  74                 etp.next(1);
  75                 assertTrue(etp.first());
  76                 assertTrue(etp.eof());
  77                 assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer()));
  78         }
  79
  80         public void testBackDoesNothing() throws Exception {
  81                 final EmptyTreeIterator etp = new EmptyTreeIterator();
  82                 etp.back(1);
  83                 assertTrue(etp.first());
  84                 assertTrue(etp.eof());
  85                 assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer()));
  86
  87                 etp.back(1);
  88                 assertTrue(etp.first());
  89                 assertTrue(etp.eof());
  90                 assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer()));
  91         }
  92
  93         public void testStopWalkCallsParent() throws Exception {
  94                 final boolean called[] = new boolean[1];
  95                 assertFalse(called[0]);
  96
  97                 final EmptyTreeIterator parent = new EmptyTreeIterator() {
  98                         @Override
  99                         public void stopWalk() {
 100                                 called[0] = true;
 101                         }
 102                 };
 103                 parent.createSubtreeIterator(db).stopWalk();
 104                 assertTrue(called[0]);
 105         }
 106 }