GUACAMOLE-1048: Allow direct conversion from GuacamoleStatus to GuacamoleException.

guacamole-common/src/test/java/org/apache/guacamole/protocol/GuacamoleStatusTest.java

@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.guacamole.protocol;
+
+import org.apache.guacamole.GuacamoleException;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Unit test for GuacamoleStatus that verifies exception translation functions
+ * as required.
+ */
+public class GuacamoleStatusTest {
+
+    /**
+     * Verifies that the {@link SUCCESS} status code does NOT translate to a
+     * GuacamoleException, but instead throws an IllegalStateException.
+     */
+    @Test
+    public void testSuccessHasNoException() {
+
+        try {
+            GuacamoleStatus.SUCCESS.toException("Test message");
+            Assert.fail("GuacamoleStatus.SUCCESS must throw "
+                    + "IllegalStateException for toException().");
+        }
+        catch (IllegalStateException e) {
+            // Expected
+        }
+
+    }
+
+    /**
+     * Verifies that each non-success GuacamoleStatus maps to a
+     * GuacamoleException associated with that GuacamoleStatus.
+     */
+    @Test
+    public void testStatusExceptionMapping() {
+
+        for (GuacamoleStatus status : GuacamoleStatus.values()) {
+
+            // Ignore SUCCESS status (tested via testSuccessHasNoException())
+            if (status == GuacamoleStatus.SUCCESS)
+                continue;
+
+            String message = "Test message: " + status;
+            GuacamoleException e = status.toException(message);
+
+            Assert.assertEquals("toException() should return a "
+                    + "GuacamoleException that maps to the same status.",
+                    status, e.getStatus());
+
+            Assert.assertEquals("toException() should return a "
+                    + "GuacamoleException that uses the provided message.",
+                    message, e.getMessage());
+
+        }
+
+    }
+
+}