From 25a4caec2a65dda9c947799450bce505a855c421 Mon Sep 17 00:00:00 2001
From: Torsten Grote <t@grobox.de>
Date: Wed, 14 Dec 2016 13:14:47 -0200
Subject: [PATCH] Add Unit tests for CryptoComponent#hash()
---
.../briarproject/bramble/crypto/HashTest.java | 50 +++++++++++++++++++
1 file changed, 50 insertions(+)
create mode 100644 bramble-core/src/test/java/org/briarproject/bramble/crypto/HashTest.java
diff --git a/bramble-core/src/test/java/org/briarproject/bramble/crypto/HashTest.java b/bramble-core/src/test/java/org/briarproject/bramble/crypto/HashTest.java
new file mode 100644
index 0000000000..3b5ba056f2
--- /dev/null
+++ b/bramble-core/src/test/java/org/briarproject/bramble/crypto/HashTest.java
@@ -0,0 +1,50 @@
+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));
+ }
+
+}
--
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