Add a test case to demonstrate MessageDigest.reset() doesn't.
Uncovered by a more general test:
org.apache.harmony.security.tests.java.security.MessageDigest2Test#test_digest
diff --git a/luni/src/test/java/libcore/java/security/MessageDigestTest.java b/luni/src/test/java/libcore/java/security/MessageDigestTest.java
new file mode 100644
index 0000000..0e55428
--- /dev/null
+++ b/luni/src/test/java/libcore/java/security/MessageDigestTest.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package libcore.java.security;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+import junit.framework.TestCase;
+
+public final class MessageDigestTest extends TestCase {
+
+ private final byte[] sha_456 = {
+ -24, 9, -59, -47, -50, -92, 123, 69, -29, 71,
+ 1, -46, 63, 96, -118, -102, 88, 3, 77, -55
+ };
+
+ public void testShaReset() throws NoSuchAlgorithmException {
+ MessageDigest sha = MessageDigest.getInstance("SHA");
+ sha.update(new byte[] { 1, 2, 3 });
+ sha.reset();
+ sha.update(new byte[] { 4, 5, 6 });
+ assertEquals(Arrays.toString(sha_456), Arrays.toString(sha.digest()));
+ }
+}