| /* |
| * 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.livy.client.common; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.junit.Test; |
| import static org.junit.Assert.*; |
| |
| import org.apache.livy.JobHandle.State; |
| |
| public class TestHttpMessages { |
| |
| /** |
| * Tests that all defined messages can be serialized and deserialized using Jackson. |
| */ |
| @Test |
| public void testMessageSerialization() throws Exception { |
| ObjectMapper mapper = new ObjectMapper(); |
| |
| for (Class<?> msg : HttpMessages.class.getClasses()) { |
| if (msg.isInterface()) { |
| continue; |
| } |
| |
| String name = msg.getSimpleName(); |
| |
| Constructor c = msg.getConstructors()[0]; |
| Object[] params = new Object[c.getParameterTypes().length]; |
| Type[] genericTypes = c.getGenericParameterTypes(); |
| for (int i = 0; i < params.length; i++) { |
| params[i] = dummyValue(c.getParameterTypes()[i], genericTypes[i]); |
| } |
| |
| Object o1 = c.newInstance(params); |
| byte[] serialized = mapper.writeValueAsBytes(o1); |
| Object o2 = mapper.readValue(serialized, msg); |
| |
| assertNotNull("could not deserialize " + name, o2); |
| for (Field f : msg.getFields()) { |
| checkEquals(name, f, o1, o2); |
| } |
| } |
| |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testJobStatusResultBadState() { |
| new HttpMessages.JobStatus(0L, State.QUEUED, new byte[1], null); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testJobStatusErrorBadState() { |
| new HttpMessages.JobStatus(0L, State.QUEUED, null, "An Error"); |
| } |
| |
| private Object dummyValue(Class<?> klass, Type type) { |
| switch (klass.getSimpleName()) { |
| case "int": |
| case "Integer": |
| return 42; |
| case "long": return 84L; |
| case "byte[]": return new byte[] { (byte) 0x42, (byte) 0x84 }; |
| case "String": return "test"; |
| case "State": return State.SUCCEEDED; |
| case "Map": |
| Map<String, String> map = new HashMap<>(); |
| map.put("dummy1", "dummy2"); |
| return map; |
| case "List": |
| Class<?> genericType = getGenericArgType(type); |
| return Arrays.asList(dummyValue(genericType, null), dummyValue(genericType, null)); |
| default: throw new IllegalArgumentException("FIX ME: " + klass.getSimpleName()); |
| } |
| } |
| |
| private Class<?> getGenericArgType(Type type) { |
| assertNotNull("FIX ME: null type argument.", type); |
| |
| ParameterizedType ptype = (ParameterizedType) type; |
| assertEquals("FIX ME: no support for multiple type arguments.", |
| 1, ptype.getActualTypeArguments().length); |
| |
| Type argType = ptype.getActualTypeArguments()[0]; |
| assertTrue("FIX ME: type argument is not a class.", argType instanceof Class); |
| |
| return (Class<?>) argType; |
| } |
| |
| private void checkEquals(String name, Field f, Object o1, Object o2) throws Exception { |
| Object v1 = f.get(o1); |
| Object v2 = f.get(o2); |
| |
| boolean match; |
| if (!f.getType().isArray()) { |
| match = v1.equals(v2); |
| } else if (v1 instanceof byte[]) { |
| match = Arrays.equals((byte[]) v1, (byte[]) v2); |
| } else { |
| throw new IllegalArgumentException("FIX ME: " + f.getType().getSimpleName()); |
| } |
| |
| assertTrue( |
| String.format("Field %s of %s does not match after deserialization.", f.getName(), name), |
| match); |
| } |
| |
| } |