Java tutorial
/** * The MIT License * * Copyright (C) 2007 Asterios Raptis * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package de.alpharogroup.xml.json; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.testng.AssertJUnit; import org.testng.annotations.Test; import com.fasterxml.jackson.core.JsonParseException; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.JsonMappingException; import com.fasterxml.jackson.datatype.jsonorg.JsonOrgModule; import de.alpharogroup.test.objects.Employee; import de.alpharogroup.test.objects.Gender; import de.alpharogroup.test.objects.Person; /** * Test class for {@link JsonTransformer}. */ public class JsonTransformerTest { /** * Test method for {@link JsonTransformer#toJson(Object)}. * * @throws JsonProcessingException * the json processing exception */ @Test public void testToJson() throws JsonProcessingException { final Employee employee = Employee.builder().person(Person.builder().gender(Gender.FEMALE).name("Anna") .married(true).about("Ha ha ha...").nickname("beast").build()).id("23").build(); final String actual = JsonTransformer.toJson(employee); final String expected = "{\"person\":{\"name\":\"Anna\",\"nickname\":\"beast\",\"gender\":\"FEMALE\",\"about\":\"Ha ha ha...\",\"married\":true},\"id\":\"23\"}"; AssertJUnit.assertTrue("", actual.equals(expected)); } /** * Test method for {@link JsonTransformer#toJson(java.util.List)}. * * @throws IOException * Signals that an I/O exception has occurred. */ @Test public void testToJsonList() throws IOException { final List<Employee> employees = new ArrayList<>(); employees.add(Employee.builder().person(Person.builder().gender(Gender.FEMALE).name("Anna").married(true) .about("Ha ha ha...").nickname("beast").build()).id("23").build()); employees.add(Employee.builder().person(Person.builder().gender(Gender.MALE).name("Andreas").married(false) .about("fine person").nickname("cute").build()).id("24").build()); employees.add(Employee.builder().person(Person.builder().gender(Gender.FEMALE).name("Tatjana") .married(false).about("Im hot").nickname("beautiful").build()).id("25").build()); final String actual = JsonTransformer.toJson(employees); final String expected = "[{\"person\":{\"name\":\"Anna\",\"nickname\":\"beast\",\"gender\":\"FEMALE\",\"about\":\"Ha ha ha...\",\"married\":true},\"id\":\"23\"},{\"person\":{\"name\":\"Andreas\",\"nickname\":\"cute\",\"gender\":\"MALE\",\"about\":\"fine person\",\"married\":false},\"id\":\"24\"},{\"person\":{\"name\":\"Tatjana\",\"nickname\":\"beautiful\",\"gender\":\"FEMALE\",\"about\":\"Im hot\",\"married\":false},\"id\":\"25\"}]"; AssertJUnit.assertTrue("", actual.equals(expected)); } /** * Test method for {@link JsonTransformer#toObject(String, Class)}. * * @throws JsonParseException * If an error occurs when parsing the string into Object * @throws JsonMappingException * the If an error occurs when mapping the string into Object * @throws IOException * Signals that an I/O exception has occurred. */ @Test public void testToObject() throws JsonParseException, JsonMappingException, IOException { final Employee expected = Employee.builder().person(Person.builder().gender(Gender.FEMALE).name("Anna") .married(true).about("Ha ha ha...").nickname("beast").build()).id("23").build(); final String jsonString = "{\"person\":{\"name\":\"Anna\",\"nickname\":\"beast\",\"gender\":\"FEMALE\",\"about\":\"Ha ha ha...\",\"married\":true},\"id\":\"23\"}"; final Employee actual = JsonTransformer.toObject(jsonString, Employee.class); AssertJUnit.assertEquals(expected, actual); } /** * Test method for {@link JsonTransformer#toObject(String, Class)}. * * @throws JsonParseException * If an error occurs when parsing the string into Object * @throws JsonMappingException * the If an error occurs when mapping the string into Object * @throws IOException * Signals that an I/O exception has occurred. */ @Test public void testToObjectList() throws JsonParseException, JsonMappingException, IOException { final String jsonString = "[{\"person\":{\"name\":\"Anna\",\"nickname\":\"beast\",\"gender\":\"FEMALE\",\"about\":\"Ha ha ha...\",\"married\":true},\"id\":\"23\"},{\"person\":{\"name\":\"Andreas\",\"nickname\":\"cute\",\"gender\":\"MALE\",\"about\":\"fine person\",\"married\":false},\"id\":\"24\"},{\"person\":{\"name\":\"Tatjana\",\"nickname\":\"beautiful\",\"gender\":\"FEMALE\",\"about\":\"Im hot\",\"married\":false},\"id\":\"25\"}]"; final List<Employee> actual = JsonTransformer.toObjectList(jsonString, Employee.class); System.out.println(actual); } /** * Test method for * {@link JsonTransformer#toObject(String, Class, com.fasterxml.jackson.databind.Module...)}. * This method shows also how to map a json string created from the org.json library. This is * provided by a Module, the {@link JsonOrgModule}. * * @throws JsonParseException * If an error occurs when parsing the string into Object * @throws JsonMappingException * the If an error occurs when mapping the string into Object * @throws IOException * Signals that an I/O exception has occurred. */ @Test public void testToObjectWithModules() throws JsonParseException, JsonMappingException, IOException { final Employee expected = Employee.builder().person(Person.builder().gender(Gender.FEMALE).name("Anna") .married(true).about("Ha ha ha...").nickname("beast").build()).id("23").build(); final String jsonString = "{\"id\":\"23\",\"person\":{\"married\":true,\"nickname\":\"beast\",\"name\":\"Anna\",\"about\":\"Ha ha ha...\",\"gender\":\"FEMALE\"}}"; final Employee actual = JsonTransformer.toObject(jsonString, Employee.class, new JsonOrgModule()); AssertJUnit.assertEquals(expected, actual); } }