Array with test definitions. Each entry needs a name
string and an operation
function. The operation function gets a single numeric
argument which is incremented during each test run. The function should use this argument to generate a dynamic result which it must return
to prevent the JS engine from discarding meaningless operations or optimizing static operations which would make the benchmark useless.
Optional
options: TestRunnerOptionsOptional test runner options.
Benchmarks the given test operations.