www/build/tools/csslint-rhino.js
function (actual, message) {
        YUITest.Assert._increment();
        if (actual !== null) {
            throw new YUITest.ComparisonFailure(YUITest.Assert._formatMessage(message, "Value should be null."), null, actual);
        }
    }
function (actual, message) {
        YUITest.Assert._increment();
        if (actual !== null) {
            throw new YUITest.ComparisonFailure(YUITest.Assert._formatMessage(message, "Value should be null."), null, actual);
        }
    }
function ( actual , message ) { YUITest . Assert . _increment ( ) ; if ( actual !== null ) { throw new YUITest . ComparisonFailure ( YUITest . Assert . _formatMessage ( message , "Value should be null." ) , null , actual ) ; } }
Asserts that a value is null. This uses the triple equals sign
so no type cohersion may occur.
@param {Object} actual The actual value to test.
@param {String} message (Optional) The message to display if the assertion fails.
@method isNull
@static
Asserts that a value is null . This uses the triple equals sign so no type cohersion may occur .