Java tutorial
/* * Copyright 2000-2016 Vaadin Ltd. * * 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 com.vaadin.tests.push; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import javax.servlet.ServletContext; import org.apache.commons.io.IOUtils; import com.vaadin.annotations.JavaScript; import com.vaadin.server.VaadinRequest; import com.vaadin.server.VaadinService; import com.vaadin.server.VaadinServletService; import com.vaadin.tests.components.AbstractTestUIWithLog; import com.vaadin.ui.JavaScriptFunction; import elemental.json.JsonArray; // Load vaadinPush.js so that jQueryVaadin is defined @JavaScript("vaadin://vaadinPush.debug.js") public class TrackMessageSizeUI extends AbstractTestUIWithLog { private String testMethod = "function testSequence(expected, data) {\n" + " var request = {trackMessageLength: true, messageDelimiter: '|'};\n" + " _request = {trackMessageLength: true, messageDelimiter: '|'};\n" + " _handleProtocol = function(a,message) {return message;};" + " var response = {partialMessage: ''};\n" + " var messages = [];\n" + " for(var i = 0; i < data.length; i++) {\n" + " if (!_trackMessageSize(data[i], request, response))\n" + " messages = messages.concat(response.messages);\n" + " }\n" + " if (JSON.stringify(expected) != JSON.stringify(messages)) {\n" + " if (console && typeof console.error == 'function') console.error('Expected', expected, 'but got', messages, 'for', data);\n" + " logToServer('Test failed, see javascript console for details.');\n" + " }" + "}\n"; @Override protected void setup(VaadinRequest request) { String methodImplementation = findMethodImplementation(); getPage().getJavaScript().addFunction("logToServer", new JavaScriptFunction() { @Override public void call(JsonArray arguments) { String message = arguments.getString(0); log(message); } }); getPage().getJavaScript().execute(methodImplementation + testMethod + buildTestCase()); } private String buildTestCase() { // Could maybe express the cases in java and generate JS? return "testSequence(['a', 'b'], ['1|a1|b', '']);\n" + "testSequence(['a', 'b'], ['1|a1|', 'b']);\n" + "testSequence(['a', 'b'], ['1|a1', '|b']);\n" + "testSequence(['a', 'b'], ['1|a', '1|b']);\n" + "testSequence(['a', 'b'], ['1|a', '', '1|b']);\n" + "testSequence(['a|', '|b'], ['2|a|2||b']);\n" + "testSequence(['a|', 'b'], ['2|a|', '', '1|b']);\n" + "testSequence(['a|', 'b'], ['2|a|', '1|b']);\n" + "testSequence(['a|', 'b'], ['2|a|1', '|b']);\n" + "testSequence(['a|', 'b'], ['2|a|1|', 'b']);\n" + "testSequence([' ', 'b'], ['1| 1|b']);\n" + "testSequence([' ', 'b'], ['1| ','1|b']);\n" + "testSequence([' ', 'b'], ['1|',' 1|b']);\n" + "logToServer('All tests run')\n"; } private String findMethodImplementation() { String filename = "/VAADIN/vaadinPush.debug.js"; URL resourceURL = findResourceURL(filename, (VaadinServletService) VaadinService.getCurrent()); if (resourceURL == null) { log("Can't find " + filename); return null; } try { String string = IOUtils.toString(resourceURL); // Find the function inside the script content int startIndex = string.indexOf("function _trackMessageSize"); if (startIndex == -1) { log("function not found"); return null; } // Assumes there's a /** comment before the next function int endIndex = string.indexOf("/**", startIndex); if (endIndex == -1) { log("End of function not found"); return null; } string = string.substring(startIndex, endIndex); string = string.replaceAll("jQuery", "jQueryVaadin"); return string; } catch (IOException e) { throw new RuntimeException(e); } } private URL findResourceURL(String filename, VaadinServletService service) { ServletContext sc = service.getServlet().getServletContext(); URL resourceUrl; try { resourceUrl = sc.getResource(filename); } catch (MalformedURLException e) { throw new RuntimeException(e); } if (resourceUrl == null) { // try if requested file is found from classloader // strip leading "/" otherwise stream from JAR wont work if (filename.startsWith("/")) { filename = filename.substring(1); } resourceUrl = service.getClassLoader().getResource(filename); } return resourceUrl; } @Override protected String getTestDescription() { return "Unit tests for _trackMessageSize in vaadinPush.debug.js. Implemented with testbench and a full Vaadin server side since the testing requires some file mangling."; } @Override protected Integer getTicketNumber() { return Integer.valueOf(12468); } }