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Add Unit tests for CryptoComponent#hash()

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Torsten Grote
2016-12-14 13:14:47 -02:00
parent 1081a08ea9
commit 25a4caec2a
1 changed files with 50 additions and 0 deletions
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bramble-core/src/test/java/org/briarproject/bramble/crypto/HashTest.java Normal file
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package org.briarproject.bramble.crypto;
import org.briarproject.bramble.BrambleTestCase;
import org.briarproject.bramble.TestSeedProvider;
import org.briarproject.bramble.TestUtils;
import org.briarproject.bramble.api.crypto.CryptoComponent;
import org.junit.Test;
import java.util.Arrays;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertFalse;
public class HashTest extends BrambleTestCase {
private final CryptoComponent crypto;
private final String label = TestUtils.getRandomString(42);
private final byte[] inputBytes = TestUtils.getRandomBytes(123);
private final byte[] inputBytes1 = TestUtils.getRandomBytes(234);
private final byte[] inputBytes2 = new byte[0];
public HashTest() {
crypto = new CryptoComponentImpl(new TestSeedProvider());
}
@Test
public void testIdenticalInputsProduceIdenticalHashes() {
byte[] hash1 = crypto.hash(label, inputBytes, inputBytes1, inputBytes2);
byte[] hash2 = crypto.hash(label, inputBytes, inputBytes1, inputBytes2);
assertArrayEquals(hash1, hash2);
}
@Test
public void testDifferentInputsProduceDifferentHashes() {
byte[] hash1 = crypto.hash(label, inputBytes, inputBytes1, inputBytes2);
byte[] hash2 = crypto.hash(label, inputBytes2, inputBytes1, inputBytes);
assertFalse(Arrays.equals(hash1, hash2));
}
@Test
public void testDifferentLabelsProduceDifferentHashes() {
String label2 = TestUtils.getRandomString(42);
byte[] hash1 = crypto.hash(label, inputBytes, inputBytes1, inputBytes2);
byte[] hash2 =
crypto.hash(label2, inputBytes, inputBytes1, inputBytes2);
assertFalse(Arrays.equals(hash1, hash2));
}
}