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LZ4: improve test coverage. 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1404541 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Adrien Grand 2012-11-01 11:18:11 +00:00
parent 344f8f07e1
commit 3af2bcb68b
1 changed files with 16 additions and 2 deletions
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18
lucene/codecs/src/test/org/apache/lucene/codecs/compressing/AbstractTestCompressionMode.java
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@ -38,6 +38,10 @@ public abstract class AbstractTestCompressionMode extends LuceneTestCase {
final int length = random().nextBoolean()
? random().nextInt(20)
: random().nextInt(192 * 1024);
return randomArray(length, max);
}
static byte[] randomArray(int length, int max) {
final byte[] arr = new byte[length];
for (int i = 0; i < arr.length; ++i) {
arr[i] = (byte) RandomInts.randomIntBetween(random(), 0, max);
@ -147,8 +151,8 @@ public abstract class AbstractTestCompressionMode extends LuceneTestCase {
test(decompressed);
}
public void testLongLiteralsAndMatchs() throws IOException {
// literals and matchs length > 16
public void testLongMatchs() throws IOException {
// match length > 16
final byte[] decompressed = new byte[RandomInts.randomIntBetween(random(), 300, 1024)];
for (int i = 0; i < decompressed.length; ++i) {
decompressed[i] = (byte) i;
@ -156,4 +160,14 @@ public abstract class AbstractTestCompressionMode extends LuceneTestCase {
test(decompressed);
}
public void testLongLiterals() throws IOException {
// long literals (length > 16) which are not the last literals
final byte[] decompressed = randomArray(RandomInts.randomIntBetween(random(), 400, 1024), 256);
final int matchRef = random().nextInt(30);
final int matchOff = RandomInts.randomIntBetween(random(), decompressed.length - 40, decompressed.length - 20);
final int matchLength = RandomInts.randomIntBetween(random(), 4, 10);
System.arraycopy(decompressed, matchRef, decompressed, matchOff, matchLength);
test(decompressed);
}
}