On Sat, 25 Jan 2014 17:55:30 -0500, Andrei Alexandrescu <[email protected]> wrote:

What do you think? Logistically it shouldn't be too hard to arrange things to cater to this approach.

After reading other opinions, this is what I think:

1. unit tests should be built as a separate binary. So when you build foo with -unittest, you get foo_unittest in addition to foo. 2. If you want to run unit tests, run foo_unittest. If you want simply the program, run foo.

I don't see a huge need for having unit tests run before the normal program. But maybe we should add a switch to make that work.

Building and running it as part of compilation seems like an incorrect function of the compiler. This is best left to an IDE/build script. Also, building unit tests still needs to be opt-in. Some projects can take a long time to build unit tests (dcollections takes about 20x longer to compile unit tests, last time I checked), and a quick compile-test-debug cycle is a key feature of D.

-Steve

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