jtulach@44: /*
jtulach@44:  * To change this template, choose Tools | Templates
jtulach@44:  * and open the template in the editor.
jtulach@44:  */
jtulach@44: 
jtulach@44: package test;
jtulach@44: 
jtulach@44: import org.apidesign.api.security.*;
jtulach@44: import java.nio.ByteBuffer;
jtulach@44: import java.security.MessageDigest;
jtulach@44: import java.util.Arrays;
jtulach@44: import java.util.Random;
jtulach@44: import org.junit.After;
jtulach@44: import org.junit.BeforeClass;
jtulach@44: import org.junit.Test;
jtulach@44: import static org.junit.Assert.*;
jtulach@44: 
jtulach@44: /** Compares that the MessageDigest and Digest yield the same results for
jtulach@44:  * default provider.
jtulach@44:  *
jtulach@44:  * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jtulach@44:  */
jtulach@44: public class OldAPIToNewAPITest {
jtulach@44:     private static byte[] arr;
jtulach@44:     private static long time;
jtulach@44:     private static byte[] resOld;
jtulach@44:     private static byte[] resNew;
jtulach@44: 
jtulach@44:     public OldAPIToNewAPITest() {
jtulach@44:     }
jtulach@44: 
jtulach@44:     @BeforeClass
jtulach@44:     public static void setUp() {
jtulach@44:         time = System.currentTimeMillis();
jtulach@44:         Random r = new Random(time);
jtulach@44:         arr = new byte[r.nextInt(1024)];
jtulach@44:         r.nextBytes(arr);
jtulach@44:     }
jtulach@44: 
jtulach@44:     @After
jtulach@44:     public void tearDown() {
jtulach@44:     }
jtulach@44: 
jtulach@44:     @Test
jtulach@44:     public void generateHashUsingMessageDigest() throws Exception {
jtulach@263:         if (Boolean.getBoolean("no.failures") && Boolean.getBoolean("no.md5")) return;
jtulach@51:         // BEGIN: day.end.bridges.BridgeToOldRegister
jtulach@44:         // The java.security.Providers cannot be registered in META-INF/services
jtulach@44:         // that is why one needs to either configure various properties or
jtulach@44:         // make some dummy call that will initialize our bridge class.
jtulach@44:         // Then the bridge class registers itself as a MessageDigest provider
jtulach@44:         // in its constructor.
jtulach@44:         //
jtulach@44:         // This is the call:
jtulach@44:         Digest initialize = Digest.getInstance("MD5");
jtulach@51:         // END: day.end.bridges.BridgeToOldRegister
jtulach@44:         
jtulach@44:         MessageDigest md = MessageDigest.getInstance("cnt");
jtulach@44:         byte[] res = md.digest(arr);
jtulach@44:         resOld = res;
jtulach@44:     }
jtulach@44:     
jtulach@44:     
jtulach@44:     @Test
jtulach@44:     public void generateHashUsingNewDigest() throws Exception {
jtulach@44:         Digest d = Digest.getInstance("cnt");
jtulach@44:         ByteBuffer bb = ByteBuffer.wrap(arr);
jtulach@44:         byte[] res = d.digest(bb);
jtulach@44:         resNew = res;
jtulach@44:     }
jtulach@44: 
jtulach@44: 
jtulach@44:     
jtulach@44:     @Test
jtulach@44:     public void compareTheHashes() throws Exception {
jtulach@263:         if (Boolean.getBoolean("no.failures") && Boolean.getBoolean("no.md5")) return;
jtulach@44:         if (!Arrays.equals(resOld, resNew)) {
jtulach@44:             fail("Arrays are different:\n" + Arrays.toString(resOld) + "\n" + Arrays.toString(resNew));
jtulach@44:         }
jtulach@44:     }
jtulach@44: }