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LUCENE-4509: improve test coverage of CompressingStoredFieldsFormat.

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git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1403027 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Adrien Grand 2012-10-28 16:04:12 +00:00
parent e0e91d252f
commit 1192b1b08d
1 changed files with 52 additions and 4 deletions
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54
lucene/codecs/src/test/org/apache/lucene/codecs/compressing/AbstractTestCompressionMode.java
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@ -76,6 +76,16 @@ public abstract class AbstractTestCompressionMode extends LuceneTestCase {
return Arrays.copyOfRange(bytes.bytes, bytes.offset, bytes.offset + bytes.length);
}
static byte[] copyCompressedData(Uncompressor uncompressor, byte[] compressed) throws IOException {
GrowableByteArrayDataOutput out = new GrowableByteArrayDataOutput(compressed.length);
uncompressor.copyCompressedData(new ByteArrayDataInput(compressed), out);
return Arrays.copyOf(out.bytes, out.length);
}
byte[] copyCompressedData(byte[] compressed) throws IOException {
return copyCompressedData(mode.newUncompressor(), compressed);
}
public void testUncompress() throws IOException {
final byte[] uncompressed = randomArray();
final byte[] compressed = compress(uncompressed);
@ -103,9 +113,47 @@ public abstract class AbstractTestCompressionMode extends LuceneTestCase {
public void testCopyCompressedData() throws IOException {
final byte[] uncompressed = randomArray();
final byte[] compressed = compress(uncompressed);
GrowableByteArrayDataOutput out = new GrowableByteArrayDataOutput(uncompressed.length);
mode.newUncompressor().copyCompressedData(new ByteArrayDataInput(compressed), out);
assertArrayEquals(compressed, Arrays.copyOf(out.bytes, out.length));
assertArrayEquals(compressed, copyCompressedData(compressed));
}
public void test(byte[] uncompressed) throws IOException {
final byte[] compressed = compress(uncompressed);
final byte[] restored = uncompress(compressed);
assertEquals(uncompressed.length, restored.length);
assertArrayEquals(compressed, copyCompressedData(compressed));
}
public void testEmptySequence() throws IOException {
test(new byte[0]);
}
public void testShortSequence() throws IOException {
test(new byte[] { (byte) random().nextInt(256) });
}
public void testIncompressible() throws IOException {
final byte[] uncompressed = new byte[RandomInts.randomIntBetween(random(), 20, 256)];
for (int i = 0; i < uncompressed.length; ++i) {
uncompressed[i] = (byte) i;
}
test(uncompressed);
}
// for LZ compression
public void testShortLiteralsAndMatchs() throws IOException {
// literals and matchs lengths <= 15
final byte[] uncompressed = "1234562345673456745678910123".getBytes("UTF-8");
test(uncompressed);
}
public void testLongLiteralsAndMatchs() throws IOException {
// literals and matchs length > 16
final byte[] uncompressed = new byte[RandomInts.randomIntBetween(random(), 300, 1024)];
for (int i = 0; i < uncompressed.length; ++i) {
uncompressed[i] = (byte) i;
}
test(uncompressed);
}
}