As I've written my tests I've rewritten the code base, which has driven out a better structure for the code in terms of Classes and separation of responsibility across the code.
To make the test harness as close to the live code as possible I used M4 to create a build time include. This allows me to reuse the same HTML across for the test harness, and hopefully avoid any differences in code base.
Although putting in a test harness and unit tests has not delivered any additional functionality, the code is in a much better place to accept changes. The weak point with the tests is user interactions, I expect I will have to face into this as well, though my preference would be to abstract any UI stuff out of the main code base (though it will still need testing!)
The other looming problem is performance, with the initial document complete time going from ~300ms to ~700ms. However I believe that the work I did with M4 could deliver some massive gains here, but that's for next time!
Document Complete | Fully Loaded | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Load Time | First Byte | Start Render | Speed Index | DOM Elements | Time | Requests | Bytes In | Time | Requests | Bytes In | |
First View | 0.692s | 0.243s | 0.525s | 560 | 33 | 0.692s | 5 | 9 KB | 0.700s | 5 | 10 KB |
Repeat View | 0.262s | 0.000s | 0.289s | 300 | 33 | 0.262s | 0 | 0 KB | 0.262s | 0 | 0 KB |
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