/*
* Copyright 2012 Google Inc.
*
* 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.google.gwt.dev.js.client;
import com.google.gwt.json.client.JSONNumber;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONParser;
import com.google.gwt.junit.client.GWTTestCase;
import com.google.gwt.storage.client.Storage;
import java.util.HashMap;
import java.util.Map;
/**
* Tests coverage instrumentation.
*/
public class CoverageTest extends GWTTestCase {
private static final Map<String, Double> EXPECTED_COVERAGE = new HashMap<String, Double>() { {
put("25", 1.0);
put("26", 1.0);
put("27", 1.0);
put("29", 1.0);
put("31", 0.0);
}};
@Override
public String getModuleName() {
return "com.google.gwt.dev.js.CoverageTestModule";
}
/*
* Trigger the onbeforeunload handler. It would be nice to do this by refreshing the page or
* something, but that causes the test to fail.
*/
private static native void fireOnBeforeUnloadEvent() /*-{
for (var i = 0; i < $wnd.frames.length; i++) {
if (typeof $wnd.frames[i].onbeforeunload === 'function') {
$wnd.frames[i].onbeforeunload();
}
}
}-*/;
public void testCoverageDataIsFlushedToLocalStorageOnBeforeUnload() {
Storage localStorage = Storage.getLocalStorageIfSupported();
assertNotNull("Test browser does not support localStorage", localStorage);
// No coverage initially
assertNull("Found unexpected initial coverage", localStorage.getItem("gwt_coverage"));
CoverageTestModule.method();
// Trigger the onbeforeunload handler to flush the coverage information to localStorage.
fireOnBeforeUnloadEvent();
String coverageAsJson = localStorage.getItem("gwt_coverage");
assertNotNull("No coverage data found", coverageAsJson);
JSONObject coverage = JSONParser.parseStrict(coverageAsJson).isObject();
assertNotNull("Coverage data was not valid JSON", coverage);
JSONObject fileCoverage =
coverage.get("com/google/gwt/dev/js/client/CoverageTestModule.java").isObject();
assertNotNull(fileCoverage);
for (Map.Entry<String, Double> lineCoverage : EXPECTED_COVERAGE.entrySet()) {
assertTrue(fileCoverage.containsKey(lineCoverage.getKey()));
JSONNumber value = fileCoverage.get(lineCoverage.getKey()).isNumber();
assertNotNull(value);
assertEquals(lineCoverage.getValue(), value.doubleValue(), 0.0001);
}
}
}