BufReader implements buffering for a Reader object.

Make an assertion, if not true, then throw.

Make an assertion that actual and expected are equal, deeply. If not deeply equal, then throw.

Make an assertion that actual and expected are not equal, deeply. If not then throw.

Executes a function, expecting it to throw. If it does not, then it throws. An error class and a string that should be included in the error message can also be asserted.

Registers a benchmark as a candidate for the runBenchmarks executor.

Runs specified benchmarks if the enclosing script is main.