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package org.brotli.wrapper.enc;
import static org.junit.Assert.assertEquals;
import org.brotli.integration.BundleHelper;
import org.brotli.wrapper.dec.BrotliInputStream;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.junit.runner.RunWith;
import org.junit.runners.AllTests;
/** Tests for {@link org.brotli.wrapper.enc.Encoder}. */
@RunWith(AllTests.class)
public class EncoderTest {
// TODO: remove when Bazel get JNI support.
static {
System.load(new java.io.File(new java.io.File(System.getProperty("java.library.path")),
"liblibjni.so").getAbsolutePath());
}
static InputStream getBundle() throws IOException {
return new FileInputStream(System.getProperty("TEST_BUNDLE"));
}
/** Creates a test suite. */
public static TestSuite suite() throws IOException {
TestSuite suite = new TestSuite();
InputStream bundle = getBundle();
try {
List<String> entries = BundleHelper.listEntries(bundle);
for (String entry : entries) {
suite.addTest(new EncoderTestCase(entry));
}
} finally {
bundle.close();
}
return suite;
}
/** Test case with a unique name. */
static class EncoderTestCase extends TestCase {
final String entryName;
EncoderTestCase(String entryName) {
super("EncoderTest." + entryName);
this.entryName = entryName;
}
@Override
protected void runTest() throws Throwable {
EncoderTest.run(entryName);
}
}
private static void run(String entryName) throws Throwable {
InputStream bundle = getBundle();
byte[] original;
try {
original = BundleHelper.readEntry(bundle, entryName);
} finally {
bundle.close();
}
if (original == null) {
throw new RuntimeException("Can't read bundle entry: " + entryName);
}
for (int window = 10; window <= 22; window++) {
byte[] compressed =
Encoder.compress(original, new Encoder.Parameters().setQuality(6).setWindow(window));
InputStream decoder = new BrotliInputStream(new ByteArrayInputStream(compressed));
try {
long originalCrc = BundleHelper.fingerprintStream(new ByteArrayInputStream(original));
long crc = BundleHelper.fingerprintStream(decoder);
assertEquals(originalCrc, crc);
} finally {
decoder.close();
}
}
}
}
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