Graphite graph - Testing .size with done(function () { ... });

gistfile1.js

define([
    "src/graphite/graph",
    "src/graphite/dictionary",
    "src/graphite/query",
    "src/graphite/utils",
    "src/graphite/when"
], function (Graph, Dictionary, Query, Utils, When) {
    buster.testCase("Graphite graph", {
        ...
        "Function .size": function (done) {
            var promises = [];
            promises.push(this.g.size());
            this.g.addStatement(this.subJohn, this.preName, this.objJohnName);
            promises.push(this.g.size());
            this.g.addStatement(this.subJohn, this.preKnows, this.subTim);
            promises.push(this.g.size());
            this.g.addStatement(this.subJohn, this.preKnows, this.subTim);
            promises.push(this.g.size());
            When.all(promises).then(function (results) {
                done(function () {
                    assert.equals(results[0], 0);
                    assert.equals(results[1], 1);
                    assert.equals(results[2], 2);
                    assert.equals(results[3], 2);
                });
            });
        },
        ...
    });
});