Add delete single execution

src/main/java/org/rundeck/api/RundeckClient.java

@@ -1672,6 +1672,23 @@ public class RundeckClient implements Serializable {
         );
     }
 
+    /**
+     * Delete a single execution, identified by the given ID
+     *
+     * @param executionId identifier for the execution - mandatory
+     * @throws RundeckApiException in case of error when calling the API (non-existent execution with this ID)
+     * @throws RundeckApiLoginException if the login fails (in case of login-based authentication)
+     * @throws RundeckApiTokenException if the token is invalid (in case of token-based authentication)
+     * @throws IllegalArgumentException if the executionId is null
+     */
+    public void deleteExecution(final Long executionId)
+            throws RundeckApiException, RundeckApiLoginException,
+                   RundeckApiTokenException, IllegalArgumentException
+    {
+        AssertUtil.notNull(executionId, "executionId is mandatory to abort an execution !");
+        new ApiCall(this).delete(new ApiPathBuilder("/execution/", executionId.toString()));
+    }
+
     /*
      * History
      */

src/test/java/org/rundeck/api/RundeckClientTest.java

@@ -1572,6 +1572,42 @@ public class RundeckClientTest {
                 response.getFailures().get(1).getMessage()
         );
     }
+    /**
+     * delete single execution success
+     */
+    @Test
+    @Betamax(tape = "delete_execution_success", mode = TapeMode.READ_ONLY)
+    public void deleteExecutionSuccess() throws Exception {
+        final RundeckClient client = createClient(TEST_TOKEN_8, 12);
+        client.deleteExecution(643L);
+    }
+    /**
+     * delete single execution failure (does not exist)
+     */
+    @Test
+    @Betamax(tape = "delete_execution_failure", mode = TapeMode.READ_ONLY)
+    public void deleteExecutionFailure() throws Exception {
+        final RundeckClient client = createClient(TEST_TOKEN_8, 12);
+        try {
+            client.deleteExecution(640L);
+            Assert.fail();
+        } catch (RundeckApiException.RundeckApiHttpStatusException e) {
+            Assert.assertEquals(404, e.getStatusCode());
+        }
+    }
+    /**
+     * delete single execution null input
+     */
+    @Test
+    public void deleteExecutionNullInput() throws Exception {
+        final RundeckClient client = createClient(TEST_TOKEN_8, 12);
+        try {
+            client.deleteExecution(null);
+            Assert.fail();
+        } catch (IllegalArgumentException e) {
+
+        }
+    }
     @Before
     public void setUp() throws Exception {
         // not that you can put whatever here, because we don't actually connect to the RunDeck instance

src/test/resources/betamax/tapes/delete_execution_failure.yaml

@@ -0,0 +1,21 @@
+!tape
+name: delete_execution_failure
+interactions:
+- recorded: 2014-11-06T17:45:47.952Z
+  request:
+    method: DELETE
+    uri: http://rundeck.local:4440/api/12/execution/640
+    headers:
+      Host: rundeck.local:4440
+      Proxy-Connection: Keep-Alive
+      User-Agent: RunDeck API Java Client 12
+      X-RunDeck-Auth-Token: GG7uj1y6UGahOs7QlmeN2sIwz1Y2j7zI
+  response:
+    status: 404
+    headers:
+      Content-Type: text/xml;charset=UTF-8
+      Expires: Thu, 01 Jan 1970 00:00:00 GMT
+      Server: Jetty(7.6.0.v20120127)
+      Set-Cookie: JSESSIONID=1eynpbisggwsy18ax352yya8k0;Path=/
+      X-Rundeck-API-Version: '12'
+    body: "<result error='true' apiversion='12'>\n  <error code='api.error.item.doesnotexist'>\n    <message>Execution ID does not exist: 640</message>\n  </error>\n</result>"

src/test/resources/betamax/tapes/delete_execution_success.yaml

@@ -0,0 +1,19 @@
+!tape
+name: delete_execution_success
+interactions:
+- recorded: 2014-11-06T17:45:47.749Z
+  request:
+    method: DELETE
+    uri: http://rundeck.local:4440/api/12/execution/643
+    headers:
+      Host: rundeck.local:4440
+      Proxy-Connection: Keep-Alive
+      User-Agent: RunDeck API Java Client 12
+      X-RunDeck-Auth-Token: GG7uj1y6UGahOs7QlmeN2sIwz1Y2j7zI
+  response:
+    status: 204
+    headers:
+      Content-Type: text/html;charset=UTF-8
+      Expires: Thu, 01 Jan 1970 00:00:00 GMT
+      Server: Jetty(7.6.0.v20120127)
+      Set-Cookie: JSESSIONID=1hlysemt7deir1j9r7l6ildg5x;Path=/