Java tutorial
/* * #%L * Wisdom-Framework * %% * Copyright (C) 2013 - 2014 Wisdom Framework * %% * 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. * #L% */ package org.wisdom.content.json; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.module.SimpleModule; import com.google.common.collect.ImmutableMap; import org.apache.commons.io.IOUtils; import org.junit.After; import org.junit.Before; import org.junit.Test; import org.wisdom.api.configuration.ApplicationConfiguration; import org.wisdom.content.jackson.JacksonSingleton; import org.wisdom.test.parents.FakeConfiguration; import java.io.InputStream; import java.util.Arrays; import java.util.Map; import static org.assertj.core.api.Assertions.assertThat; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.when; /** * Checks the Json Service implementation. */ public class JsonSingletonTest { JacksonSingleton json = new JacksonSingleton(); @Before public void setUp() { json.validate(); } @After public void tearDown() { json.invalidate(); } @Test public void testMapper() throws Exception { assertThat(json.mapper()).isNotNull(); } @Test public void testToJson() throws Exception { String message = "a message"; JsonNode node = json.toJson(message); assertThat(node.asText()).isEqualTo(message); String[] array = new String[] { "a", "b", "c" }; node = json.toJson(array); assertThat(node.isArray()); assertThat(node.get(1).asText()).isEqualTo("b"); node = json.toJson(Arrays.asList(array)); assertThat(node.isArray()); assertThat(node.get(1).asText()).isEqualTo("b"); Data data = new Data(); data.age = 32; data.name = "clement"; data.messages = Arrays.asList(array); node = json.toJson(data); assertThat(node.isObject()); assertThat(node.get("age").asInt()).isEqualTo(data.age); assertThat(node.get("name").asText()).isEqualTo(data.name); assertThat(node.get("messages").isArray()); assertThat(node.get("messages").get(1).asText()).isEqualTo(data.messages.get(1)); } @Test public void testFromJson() throws Exception { String test = "{\"age\":32,\"messages\":[\"msg 1\",\"msg 2\",\"msg 3\"],\"name\":\"clement\"}"; Data data = json.fromJson(test, Data.class); assertThat(data.age).isEqualTo(32); assertThat(data.name).isEqualTo("clement"); assertThat(data.messages.get(1)).isEqualTo("msg 2"); } @Test public void testSerializationAndDeserialization() throws Exception { Data data = new Data(); data.age = 32; data.name = "clement"; data.messages = Arrays.asList("msg 1", "msg 2", "msg 3"); JsonNode node = json.toJson(data); Data data2 = json.fromJson(node, data.getClass()); assertThat(data2.age).isEqualTo(data.age); assertThat(data2.name).isEqualTo(data.name); assertThat(data2.messages.get(1)).isEqualTo(data.messages.get(1)); } @Test public void testStringify() throws Exception { Data data = new Data(); data.age = 32; data.name = "clement"; data.messages = Arrays.asList("msg 1", "msg 2", "msg 3"); JsonNode node = json.toJson(data); final String stringified = json.stringify(node); assertThat(stringified).contains("\"age\""); assertThat(stringified).contains("32,"); assertThat(stringified).contains("clement"); } @Test public void testParse() throws Exception { String test = "{\"age\":32,\"messages\":[\"msg 1\",\"msg 2\",\"msg 3\"],\"name\":\"clement\"}"; JsonNode node = json.parse(test); assertThat(node.isObject()); assertThat(node.get("age").asInt()).isEqualTo(32); assertThat(node.get("name").asText()).isEqualTo("clement"); assertThat(node.get("messages").isArray()); assertThat(node.get("messages").get(1).asText()).isEqualTo("msg 2"); } @Test public void testParseStream() throws Exception { String test = "{\"age\":32,\"messages\":[\"msg 1\",\"msg 2\",\"msg 3\"],\"name\":\"clement\"}"; InputStream stream = IOUtils.toInputStream(test); JsonNode node = json.parse(stream); assertThat(node.isObject()); assertThat(node.get("age").asInt()).isEqualTo(32); assertThat(node.get("name").asText()).isEqualTo("clement"); assertThat(node.get("messages").isArray()); assertThat(node.get("messages").get(1).asText()).isEqualTo("msg 2"); } @Test public void testNewObject() throws Exception { assertThat(json.newObject()).isNotNull(); } @Test public void testNewArray() throws Exception { assertThat(json.newArray()).isNotNull(); } @Test public void testModules() { final SimpleModule module = new SimpleModule("test"); json.bindModule(module); json.unbindModule(module); } @Test public void testWithCustomConfiguration() throws Exception { Map<String, Object> configuration = ImmutableMap.<String, Object>of("INDENT_OUTPUT", true, "ALLOW_COMMENTS", true, "WRITE_NUMBERS_AS_STRINGS", true, "SORT_PROPERTIES_ALPHABETICALLY", true, "EAGER_DESERIALIZER_FETCH", true); json.configuration = mock(ApplicationConfiguration.class); when(json.configuration.getConfiguration("jackson")).thenReturn(new FakeConfiguration(configuration)); // Recreate mapper. json.validate(); String test = "{\n" + " // A simple structure\n" + " \"name\" : \"clement\",\n" + " \"age\" : 33\n" + "}"; InputStream stream = IOUtils.toInputStream(test); // Accepted because of the comment support enabled JsonNode node = json.parse(stream); // "33" is in the output String as we quote number. assertThat(json.stringify(node)).contains("\"33\""); } @Test(expected = IllegalArgumentException.class) public void testWithCustomConfigurationHavingAnIllegalParameter() throws Exception { Map<String, Object> configuration = ImmutableMap.<String, Object>of("INDENT_OUTPUT", true, "ALLOW_COMMENTS", true, "WRITE_NUMBERS_AS_STRINGS", true, "SORT_PROPERTIES_ALPHABETICALLY", true, "DO_NOT_EXIST", false); json.configuration = mock(ApplicationConfiguration.class); when(json.configuration.getConfiguration("jackson")).thenReturn(new FakeConfiguration(configuration)); // Recreate mapper => throws an exception json.validate(); } }