Add a test to ensure all Conditions have a Type mapping

smack-core/src/main/java/org/jivesoftware/smack/packet/XMPPError.java

@@ -70,7 +70,7 @@ public class XMPPError extends AbstractError {
     public static final String ERROR = "error";
 
     private static final Logger LOGGER = Logger.getLogger(XMPPError.class.getName());
-    private static final Map<Condition, Type> CONDITION_TO_TYPE = new HashMap<Condition, Type>();
+    static final Map<Condition, Type> CONDITION_TO_TYPE = new HashMap<Condition, Type>();
 
     static {
         CONDITION_TO_TYPE.put(Condition.bad_request, Type.MODIFY);

smack-core/src/test/java/org/jivesoftware/smack/packet/XMPPErrorTest.java

@@ -0,0 +1,35 @@
+/**
+ *
+ * Copyright © 2017 Ingo Bauersachs
+ *
+ * Licensed 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.jivesoftware.smack.packet;
+
+import static org.jivesoftware.smack.packet.XMPPError.Condition;
+import static org.jivesoftware.smack.packet.XMPPError.Type;
+import static org.junit.Assert.assertEquals;
+
+import java.util.Map;
+
+import org.junit.Test;
+
+public class XMPPErrorTest {
+    @Test
+    public void testConditionHasDefaultTypeMapping() throws NoSuchFieldException, IllegalAccessException {
+        Map<Condition, Type> conditionToTypeMap = XMPPError.CONDITION_TO_TYPE;
+        assertEquals("CONDITION_TO_TYPE map is likely out of sync with Condition enum",
+                Condition.values().length,
+                conditionToTypeMap.size());
+    }
+}