test/js/YTestWrapAfter.js

//Setting up our aliases..
Y.Test = YUITest;
Y.Object.each(YUITest, function(item, name) {
    var name = name.replace('Test', '');
    Y.Test[name] = item;
});

Y.Assert = YUITest.Assert;
Y.Assert.Error = Y.Test.AssertionError;
Y.Assert.ComparisonFailure = Y.Test.ComparisonFailure;
Y.Assert.UnexpectedValue = Y.Test.UnexpectedValue;
Y.Mock = Y.Test.Mock;
Y.ObjectAssert = Y.Test.ObjectAssert;
Y.ArrayAssert = Y.Test.ArrayAssert;
Y.DateAssert = Y.Test.DateAssert;
Y.Test.ResultsFormat = Y.Test.TestFormat;

/**
 * Asserts that a given condition is true. If not, then a Y.Assert.Error object is thrown
 * and the test fails.
 * @method assert
 * @param {Boolean} condition The condition to test.
 * @param {String} message The message to display if the assertion fails.
 * @for YUI
 * @static
 */
Y.assert = function(condition, message){
    Y.Assert._increment();
    if (!condition){
        throw new Y.Assert.Error(Y.Assert._formatMessage(message, "Assertion failed."));
    }
};

/**
 * Forces an assertion error to occur. Shortcut for Y.Assert.fail().
 * @method fail
 * @param {String} message (Optional) The message to display with the failure.
 * @for YUI
 * @static
 */
Y.fail = Y.Assert.fail;

var logEvent = function(event) {

    //data variables
    var message = "";
    var messageType = "";

    switch(event.type){
        case this.BEGIN_EVENT:
            message = "Testing began at " + (new Date()).toString() + ".";
            messageType = "info";
            break;

        case this.COMPLETE_EVENT:
            message = Y.substitute("Testing completed at " +
                (new Date()).toString() + ".\n" +
                "Passed:{passed} Failed:{failed} " +
                "Total:{total} ({ignored} ignored)",
                event.results);
            messageType = "info";
            break;

        case this.TEST_FAIL_EVENT:
            message = event.testName + ": failed.\n" + event.error.getMessage();
            messageType = "fail";
            break;

        case this.TEST_IGNORE_EVENT:
            message = event.testName + ": ignored.";
            messageType = "ignore";
            break;

        case this.TEST_PASS_EVENT:
            message = event.testName + ": passed.";
            messageType = "pass";
            break;

        case this.TEST_SUITE_BEGIN_EVENT:
            message = "Test suite \"" + event.testSuite.name + "\" started.";
            messageType = "info";
            break;

        case this.TEST_SUITE_COMPLETE_EVENT:
            message = Y.substitute("Test suite \"" +
                event.testSuite.name + "\" completed" + ".\n" +
                "Passed:{passed} Failed:{failed} " +
                "Total:{total} ({ignored} ignored)",
                event.results);
            messageType = "info";
            break;

        case this.TEST_CASE_BEGIN_EVENT:
            message = "Test case \"" + event.testCase.name + "\" started.";
            messageType = "info";
            break;

        case this.TEST_CASE_COMPLETE_EVENT:
            message = Y.substitute("Test case \"" +
                event.testCase.name + "\" completed.\n" +
                "Passed:{passed} Failed:{failed} " +
                "Total:{total} ({ignored} ignored)",
                event.results);
            messageType = "info";
            break;
        default:
            message = "Unexpected event " + event.type;
            message = "info";
    }

    if (Y.Test.Runner._log) {
        Y.log(message, messageType, "TestRunner");
    }
}

var i, name;

for (i in Y.Test.Runner) {
    name = Y.Test.Runner[i];
    if (i.indexOf('_EVENT') > -1) {
        Y.Test.Runner.subscribe(name, logEvent);
    }
};

Y.Test.Runner.once = Y.Test.Runner.subscribe;

Y.Test.Runner.disableLogging = function() {
    Y.Test.Runner._log = false;
};

Y.Test.Runner.enableLogging = function() {
    Y.Test.Runner._log = true;
};

Y.Test.Runner._ignoreEmpty = true;
Y.Test.Runner._log = true;

Y.Test.Runner.on = Y.Test.Runner.attach;

if (Y.config.win) {
    Y.config.win.YUITest = YUITest;
}