Book tips and best practices #367
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For now, just a few performance tips but eventually we'll want to add other things.
| # extern crate proptest_derive; | ||
| # extern crate proptest; | ||
| # use proptest_derive::Arbitrary; | ||
| # use proptest::prelude::*; |
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what do all these pound signs do?
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I take it from reading this later // doctests don't run under cfg(test), so we need to do this. that this hides this code in the docs but it's useful for compilation of the doc test?
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Yeah. This is a weird hack, but you got the main idea.
Pound signs hide these lines from the rendered docs, so we just show the bit that's useful for people to see.
And because doctests aren't compiled under cfg test, the test cases don't get defined and can't be called from main unless we also define them with cfg not test.
| ```rust,mdbook-runnable | ||
| use std::cell::RefCell; | ||
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| # struct MyState {}; |
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MyState isn't actually used in the test it looks like. In terms of communicating what's happening, i'm not sure the My prefix is that helpful either and I'm guessing if State has connect it's really ConnectionPool? what do you think about using that name?
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Looking at this now, I think this example is broken. I'll revisit.
| # fn test_add() { | ||
| # let mut runner = TestRunner::default(); | ||
| # runner.run(/* uhhm... */).unwrap(); | ||
| # } |
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what's does adding a not test version of the same code do?
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so does this compile and run in the background make it appear to the user that the #[test] version ran where actually this did?
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Yeah, the actual doctest is the cfg not test fn. The test function is just for display purposes. There's probably a better way to DRY this up. I'll take another pass at it.
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@rex-remind101 Took a second pass through and found a less hacky-hack to deal with the cfg test stuff. I also enabled a bunch more proptests. One additional quirk: It might be worth exploring https://github.com/tfpk/mdbook-keeper/ (which solves many of these quirks). |
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Who can approve the workflow so CI can run? |
Also update the book template and config. Lots of changes here, very open to feedback.