/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


/**
 * @fileoverview This file contains small testing framework along with the
 * test suite for the frontend. These tests are a part of the continues build
 * and are executed by the devtools_sanity_unittest.cc as a part of the
 * Interactive UI Test suite.
 * FIXME: change field naming style to use trailing underscore.
 */

if (window.domAutomationController) {

var ___interactiveUiTestsMode = true;

/**
 * Test suite for interactive UI tests.
 * @constructor
 */
TestSuite = function()
{
    this.controlTaken_ = false;
    this.timerId_ = -1;
};


/**
 * Reports test failure.
 * @param {string} message Failure description.
 */
TestSuite.prototype.fail = function(message)
{
    if (this.controlTaken_)
        this.reportFailure_(message);
    else
        throw message;
};


/**
 * Equals assertion tests that expected === actual.
 * @param {Object} expected Expected object.
 * @param {Object} actual Actual object.
 * @param {string} opt_message User message to print if the test fails.
 */
TestSuite.prototype.assertEquals = function(expected, actual, opt_message)
{
    if (expected !== actual) {
        var message = "Expected: '" + expected + "', but was '" + actual + "'";
        if (opt_message)
            message = opt_message + "(" + message + ")";
        this.fail(message);
    }
};

/**
 * True assertion tests that value == true.
 * @param {Object} value Actual object.
 * @param {string} opt_message User message to print if the test fails.
 */
TestSuite.prototype.assertTrue = function(value, opt_message)
{
    this.assertEquals(true, !!value, opt_message);
};


/**
 * HasKey assertion tests that object has given key.
 * @param {Object} object
 * @param {string} key
 */
TestSuite.prototype.assertHasKey = function(object, key)
{
    if (!object.hasOwnProperty(key))
        this.fail("Expected object to contain key '" + key + "'");
};


/**
 * Contains assertion tests that string contains substring.
 * @param {string} string Outer.
 * @param {string} substring Inner.
 */
TestSuite.prototype.assertContains = function(string, substring)
{
    if (string.indexOf(substring) === -1)
        this.fail("Expected to: '" + string + "' to contain '" + substring + "'");
};


/**
 * Takes control over execution.
 */
TestSuite.prototype.takeControl = function()
{
    this.controlTaken_ = true;
    // Set up guard timer.
    var self = this;
    this.timerId_ = setTimeout(function() {
        self.reportFailure_("Timeout exceeded: 20 sec");
    }, 20000);
};


/**
 * Releases control over execution.
 */
TestSuite.prototype.releaseControl = function()
{
    if (this.timerId_ !== -1) {
        clearTimeout(this.timerId_);
        this.timerId_ = -1;
    }
    this.reportOk_();
};


/**
 * Async tests use this one to report that they are completed.
 */
TestSuite.prototype.reportOk_ = function()
{
    window.domAutomationController.send("[OK]");
};


/**
 * Async tests use this one to report failures.
 */
TestSuite.prototype.reportFailure_ = function(error)
{
    if (this.timerId_ !== -1) {
        clearTimeout(this.timerId_);
        this.timerId_ = -1;
    }
    window.domAutomationController.send("[FAILED] " + error);
};


/**
 * Runs all global functions starting with "test" as unit tests.
 */
TestSuite.prototype.runTest = function(testName)
{
    try {
        this[testName]();
        if (!this.controlTaken_)
            this.reportOk_();
    } catch (e) {
        this.reportFailure_(e);
    }
};


/**
 * @param {string} panelName Name of the panel to show.
 */
TestSuite.prototype.showPanel = function(panelName)
{
    // Open Scripts panel.
    var toolbar = document.getElementById("toolbar");
    var button = toolbar.getElementsByClassName(panelName)[0];
    button.click();
    this.assertEquals(WebInspector.panels[panelName], WebInspector.inspectorView.currentPanel());
};


/**
 * Overrides the method with specified name until it's called first time.
 * @param {Object} receiver An object whose method to override.
 * @param {string} methodName Name of the method to override.
 * @param {Function} override A function that should be called right after the
 *     overriden method returns.
 * @param {boolean} opt_sticky Whether restore original method after first run
 *     or not.
 */
TestSuite.prototype.addSniffer = function(receiver, methodName, override, opt_sticky)
{
    var orig = receiver[methodName];
    if (typeof orig !== "function")
        this.fail("Cannot find method to override: " + methodName);
    var test = this;
    receiver[methodName] = function(var_args) {
        try {
            var result = orig.apply(this, arguments);
        } finally {
            if (!opt_sticky)
                receiver[methodName] = orig;
        }
        // In case of exception the override won't be called.
        try {
            override.apply(this, arguments);
        } catch (e) {
            test.fail("Exception in overriden method '" + methodName + "': " + e);
        }
        return result;
    };
};


TestSuite.prototype.testEnableResourcesTab = function()
{
    // FIXME once reference is removed downstream.
}

TestSuite.prototype.testCompletionOnPause = function()
{
    // FIXME once reference is removed downstream.
}

// UI Tests


/**
 * Tests that scripts tab can be open and populated with inspected scripts.
 */
TestSuite.prototype.testShowScriptsTab = function()
{
    this.showPanel("scripts");
    var test = this;
    // There should be at least main page script.
    this._waitUntilScriptsAreParsed(["debugger_test_page.html"],
        function() {
            test.releaseControl();
        });
    // Wait until all scripts are added to the debugger.
    this.takeControl();
};


/**
 * Tests that scripts tab is populated with inspected scripts even if it
 * hadn't been shown by the moment inspected paged refreshed.
 * @see http://crbug.com/26312
 */
TestSuite.prototype.testScriptsTabIsPopulatedOnInspectedPageRefresh = function()
{
    var test = this;
    this.assertEquals(WebInspector.panels.elements, WebInspector.inspectorView.currentPanel(), "Elements panel should be current one.");

    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.GlobalObjectCleared, waitUntilScriptIsParsed);

    // Reload inspected page. It will reset the debugger agent.
    test.evaluateInConsole_("window.location.reload(true);", function(resultText) {});

    function waitUntilScriptIsParsed()
    {
        WebInspector.debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.GlobalObjectCleared, waitUntilScriptIsParsed);
        test.showPanel("scripts");
        test._waitUntilScriptsAreParsed(["debugger_test_page.html"],
            function() {
                test.releaseControl();
            });
    }

    // Wait until all scripts are added to the debugger.
    this.takeControl();
};


/**
 * Tests that scripts list contains content scripts.
 */
TestSuite.prototype.testContentScriptIsPresent = function()
{
    this.showPanel("scripts");
    var test = this;

    test._waitUntilScriptsAreParsed(
        ["page_with_content_script.html", "simple_content_script.js"],
        function() {
          test.releaseControl();
        });

    // Wait until all scripts are added to the debugger.
    this.takeControl();
};


/**
 * Tests that scripts are not duplicaed on Scripts tab switch.
 */
TestSuite.prototype.testNoScriptDuplicatesOnPanelSwitch = function()
{
    var test = this;

    // There should be two scripts: one for the main page and another
    // one which is source of console API(see
    // InjectedScript._ensureCommandLineAPIInstalled).
    var expectedScriptsCount = 2;
    var parsedScripts = [];

    this.showPanel("scripts");

    function switchToElementsTab() {
        test.showPanel("elements");
        setTimeout(switchToScriptsTab, 0);
    }

    function switchToScriptsTab() {
        test.showPanel("scripts");
        setTimeout(checkScriptsPanel, 0);
    }

    function checkScriptsPanel() {
        test.assertTrue(test._scriptsAreParsed(["debugger_test_page.html"]), "Some scripts are missing.");
        checkNoDuplicates();
        test.releaseControl();
    }

    function checkNoDuplicates() {
        var uiSourceCodes = test.nonAnonymousUISourceCodes_();
        for (var i = 0; i < uiSourceCodes.length; i++) {
            var scriptName = uiSourceCodes[i].url;
            for (var j = i + 1; j < uiSourceCodes.length; j++)
                test.assertTrue(scriptName !== uiSourceCodes[j].url, "Found script duplicates: " + test.uiSourceCodesToString_(uiSourceCodes));
        }
    }

    test._waitUntilScriptsAreParsed(
        ["debugger_test_page.html"],
        function() {
            checkNoDuplicates();
            setTimeout(switchToElementsTab, 0);
        });


    // Wait until all scripts are added to the debugger.
    this.takeControl();
};


// Tests that debugger works correctly if pause event occurs when DevTools
// frontend is being loaded.
TestSuite.prototype.testPauseWhenLoadingDevTools = function()
{
    this.showPanel("scripts");

    // Script execution can already be paused.
    if (WebInspector.debuggerModel.debuggerPausedDetails)
        return;

    this._waitForScriptPause(this.releaseControl.bind(this));
    this.takeControl();
};


// Tests that pressing "Pause" will pause script execution if the script
// is already running.
TestSuite.prototype.testPauseWhenScriptIsRunning = function()
{
    this.showPanel("scripts");

    this.evaluateInConsole_(
        'setTimeout("handleClick()" , 0)',
        didEvaluateInConsole.bind(this));

    function didEvaluateInConsole(resultText) {
        this.assertTrue(!isNaN(resultText), "Failed to get timer id: " + resultText);
        // Wait for some time to make sure that inspected page is running the
        // infinite loop.
        setTimeout(testScriptPause.bind(this), 300);
    }

    function testScriptPause() {
        // The script should be in infinite loop. Click "Pause" button to
        // pause it and wait for the result.
        WebInspector.panels.scripts._pauseButton.element.click();

        this._waitForScriptPause(this.releaseControl.bind(this));
    }

    this.takeControl();
};


/**
 * Tests network size.
 */
TestSuite.prototype.testNetworkSize = function()
{
    var test = this;

    function finishResource(resource, finishTime)
    {
        test.assertEquals(219, resource.transferSize, "Incorrect total encoded data length");
        test.assertEquals(25, resource.resourceSize, "Incorrect total data length");
        test.releaseControl();
    }

    this.addSniffer(WebInspector.NetworkDispatcher.prototype, "_finishNetworkRequest", finishResource);

    // Reload inspected page to sniff network events
    test.evaluateInConsole_("window.location.reload(true);", function(resultText) {});

    this.takeControl();
};


/**
 * Tests network sync size.
 */
TestSuite.prototype.testNetworkSyncSize = function()
{
    var test = this;

    function finishResource(resource, finishTime)
    {
        test.assertEquals(219, resource.transferSize, "Incorrect total encoded data length");
        test.assertEquals(25, resource.resourceSize, "Incorrect total data length");
        test.releaseControl();
    }

    this.addSniffer(WebInspector.NetworkDispatcher.prototype, "_finishNetworkRequest", finishResource);

    // Send synchronous XHR to sniff network events
    test.evaluateInConsole_("var xhr = new XMLHttpRequest(); xhr.open(\"GET\", \"chunked\", false); xhr.send(null);", function() {});

    this.takeControl();
};


/**
 * Tests network raw headers text.
 */
TestSuite.prototype.testNetworkRawHeadersText = function()
{
    var test = this;

    function finishResource(resource, finishTime)
    {
        if (!resource.responseHeadersText)
            test.fail("Failure: resource does not have response headers text");
        test.assertEquals(164, resource.responseHeadersText.length, "Incorrect response headers text length");
        test.releaseControl();
    }

    this.addSniffer(WebInspector.NetworkDispatcher.prototype, "_finishNetworkRequest", finishResource);

    // Reload inspected page to sniff network events
    test.evaluateInConsole_("window.location.reload(true);", function(resultText) {});

    this.takeControl();
};


/**
 * Tests network timing.
 */
TestSuite.prototype.testNetworkTiming = function()
{
    var test = this;

    function finishResource(resource, finishTime)
    {
        // Setting relaxed expectations to reduce flakiness.
        // Server sends headers after 100ms, then sends data during another 100ms.
        // We expect these times to be measured at least as 70ms.
        test.assertTrue(resource.timing.receiveHeadersEnd - resource.timing.connectStart >= 70,
                        "Time between receiveHeadersEnd and connectStart should be >=70ms, but was " +
                        "receiveHeadersEnd=" + resource.timing.receiveHeadersEnd + ", connectStart=" + resource.timing.connectStart + ".");
        test.assertTrue(resource.responseReceivedTime - resource.startTime >= 0.07,
                "Time between responseReceivedTime and startTime should be >=0.07s, but was " +
                "responseReceivedTime=" + resource.responseReceivedTime + ", startTime=" + resource.startTime + ".");
        test.assertTrue(resource.endTime - resource.startTime >= 0.14,
                "Time between endTime and startTime should be >=0.14s, but was " +
                "endtime=" + resource.endTime + ", startTime=" + resource.startTime + ".");

        test.releaseControl();
    }

    this.addSniffer(WebInspector.NetworkDispatcher.prototype, "_finishNetworkRequest", finishResource);

    // Reload inspected page to sniff network events
    test.evaluateInConsole_("window.location.reload(true);", function(resultText) {});

    this.takeControl();
};


TestSuite.prototype.testConsoleOnNavigateBack = function()
{
    if (WebInspector.console.messages.length === 1)
        firstConsoleMessageReceived.call(this);
    else
        WebInspector.console.addEventListener(WebInspector.ConsoleModel.Events.MessageAdded, firstConsoleMessageReceived, this);

    function firstConsoleMessageReceived() {
        WebInspector.console.removeEventListener(WebInspector.ConsoleModel.Events.MessageAdded, firstConsoleMessageReceived, this);
        this.evaluateInConsole_("clickLink();", didClickLink.bind(this));
    }

    function didClickLink() {
        // Check that there are no new messages(command is not a message).
        this.assertEquals(3, WebInspector.console.messages.length);
        this.assertEquals(1, WebInspector.console.messages[0].totalRepeatCount);
        this.evaluateInConsole_("history.back();", didNavigateBack.bind(this));
    }

    function didNavigateBack()
    {
        // Make sure navigation completed and possible console messages were pushed.
        this.evaluateInConsole_("void 0;", didCompleteNavigation.bind(this));
    }

    function didCompleteNavigation() {
        this.assertEquals(7, WebInspector.console.messages.length);
        this.assertEquals(1, WebInspector.console.messages[0].totalRepeatCount);
        this.releaseControl();
    }

    this.takeControl();
};


TestSuite.prototype.testReattachAfterCrash = function()
{
    this.evaluateInConsole_("1+1;", this.releaseControl.bind(this));
    this.takeControl();
};


TestSuite.prototype.testSharedWorker = function()
{
    function didEvaluateInConsole(resultText) {
        this.assertEquals("2011", resultText);
        this.releaseControl();
    }
    this.evaluateInConsole_("globalVar", didEvaluateInConsole.bind(this));
    this.takeControl();
};


TestSuite.prototype.testPauseInSharedWorkerInitialization = function()
{
    if (WebInspector.debuggerModel.debuggerPausedDetails)
        return;
    this._waitForScriptPause(this.releaseControl.bind(this));
    this.takeControl();
};

/**
 * Tests that timeline receives frame signals.
 */
TestSuite.prototype.testTimelineFrames = function()
{
    var test = this;

    function step1()
    {
        test.recordTimeline(onTimelineRecorded);
        test.evaluateInConsole_("runTest()", function(){});
    }

    function onTimelineRecorded(records)
    {
        var frameCount = 0;
        var recordsInFrame = {};

        for (var i = 0; i < records.length; ++i) {
            var record = records[i];
            if (record.type !== "BeginFrame") {
                recordsInFrame[record.type] = (recordsInFrame[record.type] || 0) + 1;
                continue;
            }
            if (!frameCount++)
                continue;

            test.assertHasKey(recordsInFrame, "FireAnimationFrame");
            test.assertHasKey(recordsInFrame, "Layout");
            test.assertHasKey(recordsInFrame, "RecalculateStyles");
            test.assertHasKey(recordsInFrame, "Paint");
            recordsInFrame = {};
        }
        test.assertTrue(frameCount >= 5, "Not enough frames");
        test.releaseControl();
    }

    step1();
    test.takeControl();
}

// Regression test for http://webk.it/97466
TestSuite.prototype.testPageOverlayUpdate = function()
{
    var test = this;

    function populatePage()
    {
        var div1 = document.createElement("div");
        div1.id = "div1";
        // Force accelerated compositing.
        div1.style.webkitTransform = "translateZ(0)";
        document.body.appendChild(div1);
        var div2 = document.createElement("div");
        div2.id = "div2";
        document.body.appendChild(div2);
    }

    function step1()
    {
        test.evaluateInConsole_(populatePage.toString() + "; populatePage();" +
                                "inspect(document.getElementById('div1'))", function() {});
        WebInspector.notifications.addEventListener(WebInspector.ElementsTreeOutline.Events.SelectedNodeChanged, step2);
    }

    function step2()
    {
        WebInspector.notifications.removeEventListener(WebInspector.ElementsTreeOutline.Events.SelectedNodeChanged, step2);
        test.recordTimeline(onTimelineRecorded);
        setTimeout(step3, 500);
    }

    function step3()
    {
        test.evaluateInConsole_("inspect(document.getElementById('div2'))", function() {});
        WebInspector.notifications.addEventListener(WebInspector.ElementsTreeOutline.Events.SelectedNodeChanged, step4);
    }

    function step4()
    {
        WebInspector.notifications.removeEventListener(WebInspector.ElementsTreeOutline.Events.SelectedNodeChanged, step4);
        test.stopTimeline();
    }

    function onTimelineRecorded(records)
    {
        var types = {};
        for (var i = 0; i < records.length; ++i)
            types[records[i].type] = (types[records[i].type] || 0) + 1;

        var frameCount = types["BeginFrame"];
        // There should be at least two updates caused by selection of nodes.
        test.assertTrue(frameCount >= 2, "Not enough DevTools overlay updates");
        // We normally expect up to 3 frames, but allow for a bit more in case
        // of some unexpected invalidations.
        test.assertTrue(frameCount < 6, "Too many updates caused by DevTools overlay");
        test.releaseControl();
    }

    step1();
    this.takeControl();
}


/**
 * Records timeline till console.timeStamp("ready"), invokes callback with resulting records.
 * @param {function(Array.<Object>)} callback
 */
TestSuite.prototype.recordTimeline = function(callback)
{
    var records = [];
    var dispatchOnRecordType = {}

    WebInspector.timelineManager.addEventListener(WebInspector.TimelineManager.EventTypes.TimelineEventRecorded, addRecord);
    WebInspector.timelineManager.start();

    function addRecord(event)
    {
        innerAddRecord(event.data);
    }

    function innerAddRecord(record)
    {
        records.push(record);
        if (record.type === "TimeStamp" && record.data.message === "ready")
            done();

        if (record.children)
            record.children.forEach(innerAddRecord);
    }

    function done()
    {
        WebInspector.timelineManager.stop();
        WebInspector.timelineManager.removeEventListener(WebInspector.TimelineManager.EventTypes.TimelineEventRecorded, addRecord);
        callback(records);
    }
}


TestSuite.prototype.stopTimeline = function()
{
    this.evaluateInConsole_("console.timeStamp('ready')", function() {});
}

TestSuite.prototype.waitForTestResultsInConsole = function()
{
    var messages = WebInspector.console.messages;
    for (var i = 0; i < messages.length; ++i) {
        var text = messages[i].text;
        if (text === "PASS")
            return;
        else if (/^FAIL/.test(text))
            this.fail(text); // This will throw.
    }
    // Neitwer PASS nor FAIL, so wait for more messages.
    function onConsoleMessage(event)
    {
        var text = event.data.text;
        if (text === "PASS")
            this.releaseControl();
        else if (/^FAIL/.test(text))
            this.fail(text);
    }

    WebInspector.console.addEventListener(WebInspector.ConsoleModel.Events.MessageAdded, onConsoleMessage, this);
    this.takeControl();
};

TestSuite.prototype.checkLogAndErrorMessages = function()
{
    var messages = WebInspector.console.messages;

    var matchesCount = 0;
    function validMessage(message)
    {
        if (message.text === "log" && message.level === WebInspector.ConsoleMessage.MessageLevel.Log) {
            ++matchesCount;
            return true;
        }

        if (message.text === "error" && message.level === WebInspector.ConsoleMessage.MessageLevel.Error) {
            ++matchesCount;
            return true;
        }
        return false;
    }

    for (var i = 0; i < messages.length; ++i) {
        if (validMessage(messages[i]))
            continue;
        this.fail(messages[i].text + ":" + messages[i].level); // This will throw.
    }

    if (matchesCount === 2)
        return;

    // Wait for more messages.
    function onConsoleMessage(event)
    {
        var message = event.data;
        if (validMessage(message)) {
            if (matchesCount === 2) {
                this.releaseControl();
                return;
            }
        } else
            this.fail(message.text + ":" + messages[i].level);
    }

    WebInspector.console.addEventListener(WebInspector.ConsoleModel.Events.MessageAdded, onConsoleMessage, this);
    this.takeControl();
};

/**
 * Serializes array of uiSourceCodes to string.
 * @param {Array.<WebInspectorUISourceCode>} uiSourceCodes
 * @return {string}
 */
TestSuite.prototype.uiSourceCodesToString_ = function(uiSourceCodes)
{
    var names = [];
    for (var i = 0; i < uiSourceCodes.length; i++)
        names.push('"' + uiSourceCodes[i].url + '"');
    return names.join(",");
};


/**
 * Returns all loaded non anonymous uiSourceCodes.
 * @return {Array.<WebInspectorUISourceCode>}
 */
TestSuite.prototype.nonAnonymousUISourceCodes_ = function()
{
    function filterOutAnonymous(uiSourceCode)
    {
        return !!uiSourceCode.url;
    }

    function filterOutService(uiSourceCode)
    {
        return !uiSourceCode.project().isServiceProject();
    }

    var uiSourceCodes = WebInspector.workspace.uiSourceCodes();
    uiSourceCodes = uiSourceCodes.filter(filterOutService);
    return uiSourceCodes.filter(filterOutAnonymous);
};


/*
 * Evaluates the code in the console as if user typed it manually and invokes
 * the callback when the result message is received and added to the console.
 * @param {string} code
 * @param {function(string)} callback
 */
TestSuite.prototype.evaluateInConsole_ = function(code, callback)
{
    WebInspector.showConsole();
    WebInspector.consoleView.prompt.text = code;
    WebInspector.consoleView.promptElement.dispatchEvent(TestSuite.createKeyEvent("Enter"));

    this.addSniffer(WebInspector.ConsoleView.prototype, "_showConsoleMessage",
        function(messageIndex) {
            var commandResult = WebInspector.console.messages[messageIndex];
            callback(commandResult.toMessageElement().textContent);
        });
};


/**
 * Checks that all expected scripts are present in the scripts list
 * in the Scripts panel.
 * @param {Array.<string>} expected Regular expressions describing
 *     expected script names.
 * @return {boolean} Whether all the scripts are in "scripts-files" select
 *     box
 */
TestSuite.prototype._scriptsAreParsed = function(expected)
{
    var uiSourceCodes = this.nonAnonymousUISourceCodes_();
    // Check that at least all the expected scripts are present.
    var missing = expected.slice(0);
    for (var i = 0; i < uiSourceCodes.length; ++i) {
        for (var j = 0; j < missing.length; ++j) {
            if (uiSourceCodes[i].name().search(missing[j]) !== -1) {
                missing.splice(j, 1);
                break;
            }
        }
    }
    return missing.length === 0;
};


/**
 * Waits for script pause, checks expectations, and invokes the callback.
 * @param {function():void} callback
 */
TestSuite.prototype._waitForScriptPause = function(callback)
{
    function pauseListener(event) {
        WebInspector.debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.DebuggerPaused, pauseListener, this);
        callback();
    }
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.DebuggerPaused, pauseListener, this);
};


/**
 * Waits until all the scripts are parsed and asynchronously executes the code
 * in the inspected page.
 */
TestSuite.prototype._executeCodeWhenScriptsAreParsed = function(code, expectedScripts)
{
    var test = this;

    function executeFunctionInInspectedPage() {
        // Since breakpoints are ignored in evals' calculate() function is
        // execute after zero-timeout so that the breakpoint is hit.
        test.evaluateInConsole_(
            'setTimeout("' + code + '" , 0)',
            function(resultText) {
                test.assertTrue(!isNaN(resultText), "Failed to get timer id: " + resultText + ". Code: " + code);
            });
    }

    test._waitUntilScriptsAreParsed(expectedScripts, executeFunctionInInspectedPage);
};


/**
 * Waits until all the scripts are parsed and invokes the callback.
 */
TestSuite.prototype._waitUntilScriptsAreParsed = function(expectedScripts, callback)
{
    var test = this;

    function waitForAllScripts() {
        if (test._scriptsAreParsed(expectedScripts))
            callback();
        else
            test.addSniffer(WebInspector.panels.scripts, "_addUISourceCode", waitForAllScripts);
    }

    waitForAllScripts();
};


/**
 * Key event with given key identifier.
 */
TestSuite.createKeyEvent = function(keyIdentifier)
{
    var evt = document.createEvent("KeyboardEvent");
    evt.initKeyboardEvent("keydown", true /* can bubble */, true /* can cancel */, null /* view */, keyIdentifier, "");
    return evt;
};


/**
 * Test runner for the test suite.
 */
var uiTests = {};


/**
 * Run each test from the test suit on a fresh instance of the suite.
 */
uiTests.runAllTests = function()
{
    // For debugging purposes.
    for (var name in TestSuite.prototype) {
        if (name.substring(0, 4) === "test" && typeof TestSuite.prototype[name] === "function")
            uiTests.runTest(name);
    }
};


/**
 * Run specified test on a fresh instance of the test suite.
 * @param {string} name Name of a test method from TestSuite class.
 */
uiTests.runTest = function(name)
{
    if (uiTests._populatedInterface)
        new TestSuite().runTest(name);
    else
        uiTests._pendingTestName = name;
};

(function() {

function runTests()
{
    uiTests._populatedInterface = true;
    var name = uiTests._pendingTestName;
    delete uiTests._pendingTestName;
    if (name)
        new TestSuite().runTest(name);
}

var oldLoadCompleted = InspectorFrontendAPI.loadCompleted;
InspectorFrontendAPI.loadCompleted = function()
{
    oldLoadCompleted.call(InspectorFrontendAPI);
    runTests();
}

})();

}