[swift-users] Parameter Validation
jens at mooseyard.com
Mon Dec 7 11:25:07 CST 2015
> On Dec 7, 2015, at 9:21 AM, Dmitri Gribenko <gribozavr at gmail.com> wrote:
> Yes you can. Maybe not with the current XCTest, but there's nothing that prevents unit-testing traps in principle. The standard library is already doing that. See test/1_stdlib/ArrayTraps.swift.gyb for some examples:
Nice! But completely undocumented, AFAIK. This is the first I’ve heard of the term “trap” or a way to handle them. The docs I’ve seen just say that an assertion failure terminates the process.
Is there any more info about traps, other than “Read the source, Luke?” ;-)
(This is one reason I’ve been excited for the open source release — finally getting to look behind the scenes of some of the “magic” stuff.)
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