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//
// Helper functions for Resource Timing tests
//

var mark_names = [
    '',
    '1',
    'abc',
];

var measures = [
    [''],
    ['2', 1],
    ['aaa', 'navigationStart', ''],
];

function test_method_exists(method, method_name, properties)
{
    var msg;
    if (typeof method === 'function')
        msg = 'performance.' + method.name + ' is supported!';
    else
        msg = 'performance.' + method_name + ' is supported!';
    wp_test(function() { assert_equals(typeof method, 'function', msg); }, msg, properties);
}

function test_noless_than(value, greater_than, msg, properties)
{
    wp_test(function () { assert_true(value >= greater_than, msg); }, msg, properties);
}

function test_fail(msg, properties)
{
    wp_test(function() { assert_unreached(); }, msg, properties);
}

function test_resource_entries(entries, expected_entries)
{
    test(function() {
        // This is slightly convoluted so that we can sort the output.
        var actual_entries = {};
        var origin = window.location.protocol + "//" + window.location.host;

        for (var i = 0; i < entries.length; ++i) {
            var entry = entries[i];
            var found = false;
            for (var expected_entry in expected_entries) {
                if (entry.name == origin + expected_entry) {
                    found = true;
                    if (expected_entry in actual_entries) {
                        assert_unreached(expected_entry + ' is not expected to have duplicate entries');
                    }
                    actual_entries[expected_entry] = entry;
                    break;
                }
            }
            if (!found) {
                assert_unreached(entries[i].name + ' is not expected to be in the Resource Timing buffer');
            }
        }

        sorted_urls = [];
        for (var i in actual_entries) {
            sorted_urls.push(i);
        }
        sorted_urls.sort();
        for (var i in sorted_urls) {
            var url = sorted_urls[i];
            assert_equals(actual_entries[url].initiatorType,
                        expected_entries[url],
                        origin + url + ' is expected to have initiatorType ' + expected_entries[url]);
        }
        for (var j in expected_entries) {
            if (!(j in actual_entries)) {
                assert_unreached(origin + j + ' is expected to be in the Resource Timing buffer');
            }
        }
    }, "Testing resource entries");
}

function performance_entrylist_checker(type)
{
    var entryType = type;

    function entry_check(entry, expectedNames)
    {
        var msg = 'Entry \"' + entry.name + '\" should be one that we have set.';
        wp_test(function() { assert_in_array(entry.name, expectedNames, msg); }, msg);
        test_equals(entry.entryType, entryType, 'entryType should be \"' + entryType + '\".');
        if (type === "measure") {
            test_true(isFinite(entry.startTime), 'startTime should be a number.');
            test_true(isFinite(entry.duration), 'duration should be a number.');
        } else if (type === "mark") {
            test_greater_than(entry.startTime, 0, 'startTime should greater than 0.');
            test_equals(entry.duration, 0, 'duration of mark should be 0.');
        }
    }

    function entrylist_order_check(entryList)
    {
        var inOrder = true;
        for (var i = 0; i < entryList.length - 1; ++i)
        {
            if (entryList[i + 1].startTime < entryList[i].startTime) {
                inOrder = false;
                break;
            }
        }
        return inOrder;
    }

    function entrylist_check(entryList, expectedLength, expectedNames)
    {
        test_equals(entryList.length, expectedLength, 'There should be ' + expectedLength + ' entries.');
        test_true(entrylist_order_check(entryList), 'Entries in entrylist should be in order.');
        for (var i = 0; i < entryList.length; ++i)
        {
            entry_check(entryList[i], expectedNames);
        }
    }

    return{"entrylist_check":entrylist_check};
}

function PerformanceContext(context)
{
    this.performanceContext = context;
}

PerformanceContext.prototype = {
    initialMeasures: function(item, index, array)
    {
        this.performanceContext.measure.apply(this.performanceContext, item);
    },

    mark: function()
    {
        this.performanceContext.mark.apply(this.performanceContext, arguments);
    },

    measure: function()
    {
        this.performanceContext.measure.apply(this.performanceContext, arguments);
    },

    clearMarks: function()
    {
        this.performanceContext.clearMarks.apply(this.performanceContext, arguments);

    },

    clearMeasures: function()
    {
        this.performanceContext.clearMeasures.apply(this.performanceContext, arguments);

    },

    getEntries: function()
    {
        return this.performanceContext.getEntries.apply(this.performanceContext, arguments);
    },

    getEntriesByType: function()
    {
        return this.performanceContext.getEntriesByType.apply(this.performanceContext, arguments);
    },

    getEntriesByName: function()
    {
        return this.performanceContext.getEntriesByName.apply(this.performanceContext, arguments);
    },

    setResourceTimingBufferSize: function()
    {
        return this.performanceContext.setResourceTimingBufferSize.apply(this.performanceContext, arguments);
    },

    registerResourceTimingBufferFullCallback: function(func)
    {
        this.performanceContext.onresourcetimingbufferfull = func;
    },

    clearResourceTimings: function()
    {
        this.performanceContext.clearResourceTimings.apply(this.performanceContext, arguments);
    }

};