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(function(QUnit) {
  var sync = Backbone.sync;  var ajax = Backbone.ajax;  var emulateHTTP = Backbone.emulateHTTP;  var emulateJSON = Backbone.emulateJSON;  var history = window.history;  var pushState = history.pushState;  var replaceState = history.replaceState;
  QUnit.config.noglobals = true;
  QUnit.testStart(function() {    var env = QUnit.config.current.testEnvironment;
    // We never want to actually call these during tests.    history.pushState = history.replaceState = function() {};
    // Capture ajax settings for comparison.    Backbone.ajax = function(settings) {      env.ajaxSettings = settings;    };
    // Capture the arguments to Backbone.sync for comparison.    Backbone.sync = function(method, model, options) {      env.syncArgs = {        method: method,        model: model,        options: options      };      sync.apply(this, arguments);    };
  });
  QUnit.testDone(function() {    Backbone.sync = sync;    Backbone.ajax = ajax;    Backbone.emulateHTTP = emulateHTTP;    Backbone.emulateJSON = emulateJSON;    history.pushState = pushState;    history.replaceState = replaceState;  });
})(QUnit);