Performance tests

Goal

Test the performance impact of fixes/changes. So, we ensure our performance is continuously improved; In other words, we're interested in comparing how fixes or changes affect the systemic performance of the library.

General Ideas

• We need to compare the performance before and after a change. Therefore, we need a metric describing how fast Globalize performs what it's supposed to.
• We're interested in the systemic performance of the library. Therefore, performance tests performance/* should use the built files dist/* (and public methods Globalize.*), analogous to the functional tests test/functional/*.
• Keep it simple. The performance tests are about generating the performance metrics (benchmark). A second and different problem is about comparing two different results. For this one, consider something analogous to https://github.com/rwaldron/grunt-compare-size.

Workload

• We need to define that. It should reflect what Globalize applications look like.
• Vyacheslav Egorov talks about shitty workloads you should avoid.

References

• How do you performance test JavaScript code?
• https://github.com/jquery/sizzle/tree/master/speed
• https://github.com/rwaldron/grunt-compare-size
• http://benchmarkjs.com/
• https://www.youtube.com/watch?v=65-RbBwZQdU