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<p class="MsoNormal">There are several different kinds of tests within the project. You might want to read through
<a href="https://llvm.org/docs/TestingGuide.html">https://llvm.org/docs/TestingGuide.html</a> to get an overview.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Lit tests (at least for Clang) are generally C/C++ sources intended to be inputs to clang; various compiler outputs are verified, usually with the FileCheck tool. These test files are not built into a bin with all the other tests. You
should be able to use llvm-lit.py to run either a single test file, or one subdirectory (e.g., `llvm-lit clang/test/Sema` will run all the tests in Sema).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Individual lit tests can express requirements on the environment, and if these are not satisfied, llvm-lit will report UNSUPPORTED. clang/test/Frontend/plugin-attribute.cpp is probably UNSUPPORTED because the test file contains the line
`REQUIRES: plugins, examples` and those dependencies are not satisfied on your system.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Unit tests are cpp sources that directly call Clang or LLVM APIs in some way, e.g., using libTooling. If that’s what you wrote, then you don’t want a lit test, you want to add your file to a unittest (or add a new unittest). I think you
can build the unittest programs with `make clang-test-depends` (that’s the correct target name for ninja, not sure about make).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hope this helps,<o:p></o:p></p>
<p class="MsoNormal">--paulr<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> cfe-dev <cfe-dev-bounces@lists.llvm.org> <b>On Behalf Of
</b>Yafei Liu via cfe-dev<br>
<b>Sent:</b> Sunday, November 8, 2020 10:19 PM<br>
<b>To:</b> Clang Dev <cfe-dev@lists.llvm.org><br>
<b>Subject:</b> Re: [cfe-dev] [check-clang][lit] can I just run my own test case in when using `make check-clang`?<o:p></o:p></p>
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<p class="MsoNormal">Weird thing is that if I run ./bin/llvm-lit -v ./tools/clang/test/Sema/asm.c, it works<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">But if I run ./bin/llvm-lit -v ./tools/clang/test/Frontend/plugin-attribute.cpp it says <o:p></o:p></p>
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<p class="MsoNormal">UNSUPPORTED: Clang :: Frontend/plugin-attribute.cpp (1 of 1)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Nov 9, 2020 at 11:05 AM Yafei Liu <<a href="mailto:yfliu@mobvoi.com">yfliu@mobvoi.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">I worte a reguation test and want to check if my code works, but it seems that I have to run `make check-clang`, and it will run all the tests belongs to check-clang, which takes a lot of times.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Since the test case is a cpp file and build into a bin with other tests (correct if I'm wrong), I can't use things like llvm-lit llvm-project/clang/test/Frontend/mytest.cpp<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">So anyway I can run "mytest" singlely?<o:p></o:p></p>
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