Amperf

Amperf provides the following information;

• Total length of time for tests.
• Average test time.
• Average test memory usage.
• Fastest and slowest iteration times.

Install

It's recommended that you install Amperf globally through NPM.

npm i -g @ampersarnie/amperf

You may need to add an alias to ./bin/amperf in your bash profile. NPM will install global modules to /usr/local/lib/node or /usr/local/lib/node_modules. The full path will be similar to; /usr/local/lib/node_modules/@ampersarnie/amperf/bin/amperf.

Tests

Amperf.describe('Suite of tests being run', function(AmperfTest) {
    AmperfTest('Test spec', function() {
        // Test code here.
    });
});

Benchmarking

Amperf provides some benchmarking capabilities allowing you to stipulate maximum speeds and memory usage to have.

Amperf.describe('Suite of tests being run', function(AmperfTest) {
    AmperfTest('Test spec', function() {
        // Test code here.
    }).bench({
        time_total: 1, // seconds
        time_average: 5.0 // milliseconds
    });
});

CLI Options

Amperf has a number of options for your test output from the command line.

--file / --f

Default: ./perf/test.js

amperf --file perf/my-test.js

Also allows for loading all files in a given directory.

amperf --file perf/

--template / --t

Default: ./DefaultTemplate.js

amperf --file perf/my-test.js --template MyTemplate.js

--iterations / --i

Default: 100

amperf --file perf/my-test.js --iterations 256

--show

Default: cycle_time,time_average,memory_average,time_fastest,time_slowest

Shows only the cycle and average times

amperf --file perf/my-test.js --show cycle_time,time_average

Templates

Amperf allows for custom output templates. A list of the required methods and their arguments can be found in the ./src/TemplateInterface.js file. You can see examples of the usage in both ./src/DefaultTemplate.js and ./examples/templates/src/ExampleTemplate.js.

The TemplateInterface does not need to be invoked within your template as these checks are handled by the AmperfTemplate class.