[CODEC-155] DigestUtils.getDigest(String) should throw IllegalArgumentException instead of RuntimeException. Use JUnit 4 expected annotation to test instead of try/catch block.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1380024 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/test/java/org/apache/commons/codec/digest/DigestUtilsTest.java

@@ -55,14 +55,9 @@ public void testConstructable() {
         assertNotNull(new DigestUtils());
     }
 
-    @Test
+    @Test(expected=IllegalArgumentException.class)
     public void testInternalNoSuchAlgorithmException() {
-        try {
-            DigestUtils.getDigest("Bogus Bogus");
-            fail("A RuntimeException should have been thrown.");
-        } catch (RuntimeException e) {
-            // Expected exception.
-        }
+        DigestUtils.getDigest("Bogus Bogus");
     }
 
     @Test