QUnit integration with TeamCity (via service messages)Supports stacktraces, comparison failure diffs for large texts.

qunit.teamcity.js

(function(QUnit) {

    var tcEscape = function(str) {
        str = str ? str.toString() : "";
        str = str.replace(/\n/g, "|n");
        str = str.replace(/\r/g, "|r");
        str = str.replace(/(['\[\]])/g, "|$1");
        return str;
    };

//QUnit.moduleStart({ name })
    QUnit.moduleStart(function(settings){
        console.log("##teamcity[testSuiteStarted name='" + settings.name + "']");
    });

//QUnit.moduleDone({ name, failed, passed, total })
    QUnit.moduleDone(function(settings){
        console.log("##teamcity[testSuiteFinished name='" + settings.name + "']");
    });

//QUnit.testStart({ name })
    QUnit.testStart(function (settings){
        console.log("##teamcity[testStarted name='" + settings.name + "' captureStandardOutput='true']");
    });

//QUnit.testDone({ name, failed, passed, total })
    QUnit.testDone(function(settings){
        if (settings.name) {
            console.log("##teamcity[testFinished name='" + settings.name + "']");
        }
    });

    QUnit.log(function( details ) {
        if (!details.result) {
            var isComparison = details.expected || details.actual;

            if ( (isComparison && ("" + details.actual + details.expected).length > 10) ) {
                console.log("##teamcity[testFailed type='comparisonFailure' name='" + details.name
                    +"' message='" + tcEscape(details.message)
                    + "' details='" + tcEscape(details.source) +
                    "' expected='" + tcEscape(details.expected) +
                    "' actual='" + tcEscape(details.actual)+ "']");
            }

            var message = "";
            if (isComparison) {
                message = "Expected: " + details.expected + ", Actual: " + details.actual;
            }
            if (details.message) {
                message = details.message + ": " + message;
            }

            console.log("Message: " + message);
            console.log("##teamcity[testFailed name='" + details.name
                +"' message='" + tcEscape(message) + "' details='" + tcEscape(details.source) + "']");
        }
    });

})(QUnit);