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test numBits=0 for FixedBitSet 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1147691 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael McCandless 2011-07-17 18:14:54 +00:00
parent 50be8c0489
commit fd4db996c3
1 changed files with 20 additions and 2 deletions
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22
lucene/src/test/org/apache/lucene/util/TestFixedBitSet.java
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@ -197,7 +197,8 @@ public class TestFixedBitSet extends LuceneTestCase {
*/
public void testEquals() {
final int numBits = random.nextInt(2000) + 1 /* numBits cannot be 0 */;
// This test can't handle numBits==0:
final int numBits = random.nextInt(2000) + 1;
FixedBitSet b1 = new FixedBitSet(numBits);
FixedBitSet b2 = new FixedBitSet(numBits);
assertTrue(b1.equals(b2));
@ -219,7 +220,8 @@ public class TestFixedBitSet extends LuceneTestCase {
}
public void testHashCodeEquals() {
final int numBits = random.nextInt(2000);
// This test can't handle numBits==0:
final int numBits = random.nextInt(2000) + 1;
FixedBitSet b1 = new FixedBitSet(numBits);
FixedBitSet b2 = new FixedBitSet(numBits);
assertTrue(b1.equals(b2));
@ -237,6 +239,22 @@ public class TestFixedBitSet extends LuceneTestCase {
}
}
public void testSmallBitSets() {
// Make sure size 0-10 bit sets are OK:
for(int numBits=0;numBits<10;numBits++) {
FixedBitSet b1 = new FixedBitSet(numBits);
FixedBitSet b2 = new FixedBitSet(numBits);
assertTrue(b1.equals(b2));
assertEquals(b1.hashCode(), b2.hashCode());
assertEquals(0, b1.cardinality());
if (numBits > 0) {
b1.set(0, numBits);
assertEquals(numBits, b1.cardinality());
b1.flip(0, numBits);
assertEquals(0, b1.cardinality());
}
}
}
private FixedBitSet makeFixedBitSet(int[] a, int numBits) {
FixedBitSet bs = new FixedBitSet(numBits);