{
                // array of test data
                tests: tests,
                // the number of tests to run in parallel
                testsPerSlice: 50,
                // milliseconds to wait before calling teardown and ending test
                duration: parseFloat(duration) * 1000,
                // prepare individual test
                setup: function(data, options) {
                    // clone and overwrite initial styles to be
                    // applied to #transition
            