Use try-with-resources and ExpectedException

src/tests/junit/org/apache/tools/ant/TestHelper.java

@@ -33,21 +33,11 @@ public class TestHelper {
      * after this method since the associated socket is released and some other process can now use it.
      */
     public static int getMaybeAvailablePort() {
-        final ServerSocket s;
-        try {
-            s = new ServerSocket(0);
+        try (ServerSocket s = new ServerSocket(0)) {
             s.setReuseAddress(true);
-            int port = s.getLocalPort();
-            try {
-                s.close();
-            } catch (IOException e) {
-                // ignore
-            }
-            return port;
+            return s.getLocalPort();
         } catch (IOException e) {
             // ignore
-        } finally {
-
         }
         throw new IllegalStateException("No TCP/IP port available");
     }

src/tests/junit/org/apache/tools/ant/taskdefs/email/EmailTaskTest.java

@@ -25,6 +25,7 @@ import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.ExpectedException;
 
 /**
  * TODO : develop these testcases - the email task needs to have attributes allowing
@@ -35,6 +36,9 @@ public class EmailTaskTest {
     @Rule
     public BuildFileRule buildRule = new BuildFileRule();
 
+    @Rule
+    public ExpectedException thrown = ExpectedException.none();
+
     @Before
     public void setUp() {
         buildRule.configureProject("src/etc/testcases/taskdefs/email/mail.xml");
@@ -45,14 +49,9 @@ public class EmailTaskTest {
      */
     @Test
     public void test1() {
-        try {
-            buildRule.executeTarget("test1");
-        } catch (BuildException e) {
-            // assert it's the expected one
-            if (!e.getMessage().equals("SMTP auth only possible with MIME mail")) {
-                throw e;
-            }
-        }
+        thrown.expect(BuildException.class);
+        thrown.expectMessage("SMTP auth only possible with MIME mail");
+        buildRule.executeTarget("test1");
     }
 
     /**
@@ -60,14 +59,9 @@ public class EmailTaskTest {
      */
     @Test
     public void test2() {
-        try {
-            buildRule.executeTarget("test2");
-        } catch (BuildException e) {
-            // assert it's the expected one
-            if (!e.getMessage().equals("SSL and STARTTLS only possible with MIME mail")) {
-                throw e;
-            }
-        }
+        thrown.expect(BuildException.class);
+        thrown.expectMessage("SSL and STARTTLS only possible with MIME mail");
+        buildRule.executeTarget("test2");
     }
 
     /**