Fix deprecated code

server/sonar-process/src/test/java/org/sonar/process/AesCipherTest.java

     String key = cipher.generateRandomSecretKey();
 
     assertThat(StringUtils.isNotBlank(key)).isTrue();
-    assertThat(Base64.isArrayByteBase64(key.getBytes())).isTrue();
+    assertThat(Base64.isBase64(key.getBytes())).isTrue();
   }
 
   @Test
     String encryptedText = cipher.encrypt("this is a secret");
 
     assertThat(StringUtils.isNotBlank(encryptedText)).isTrue();
-    assertThat(Base64.isArrayByteBase64(encryptedText.getBytes())).isTrue();
+    assertThat(Base64.isBase64(encryptedText.getBytes())).isTrue();
   }
 
   @Test

sonar-duplications/src/test/java/org/sonar/duplications/detector/DetectorTestCase.java

 import java.util.Iterator;
 import java.util.List;
 
+import static org.hamcrest.CoreMatchers.hasItem;
 import static org.hamcrest.Matchers.is;
 import static org.hamcrest.Matchers.sameInstance;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertThat;
-import static org.junit.matchers.JUnitMatchers.hasItem;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoMoreInteractions;

sonar-duplications/src/test/java/org/sonar/duplications/junit/TestNamePrinter.java

  */
 package org.sonar.duplications.junit;
 
-import org.junit.rules.TestWatchman;
-import org.junit.runners.model.FrameworkMethod;
+import org.junit.rules.TestWatcher;
+import org.junit.runner.Description;
 
-public class TestNamePrinter extends TestWatchman {
+public class TestNamePrinter extends TestWatcher {
 
   @Override
-  public void starting(FrameworkMethod method) {
-    System.out.println("Executing " + method.getName());
+  protected void starting(Description description) {
+    System.out.println("Executing " + description.getMethodName());
   }
 
 }

sonar-testing-harness/src/test/java/org/sonar/test/JsonAssertTest.java

 
   @Test(expected = IllegalStateException.class)
   public void fail_to_load_url() throws Exception {
-    assertJson(new File("target/missing").toURL());
+    assertJson(new File("target/missing").toURI().toURL());
   }
 
   @Test