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Martin Storsjö a74fefb10d Reland "[lit] Handle plain negations directly in the internal shell" Keep running "not --crash" via the external "not" executable, but for plain negations, and for cases that use the shell "!" operator, just skip that argument and invert the return code. The libcxx tests only use the shell operator "!" for negations, never the "not" executable, because libcxx tests can be run without having a fully built llvm tree available providing the "not" executable. This allows using the internal shell for libcxx tests. It should be possible to reland this now that D99938 fixed the one test failure in clang-tidy that broke when "not" was handled internally, letting lit/python execute grep.exe directly instead of via not.exe. (See D99330 and D99406 for more commentery on the exact issue that broke and other potential ways of fixing it.) Differential Revision: https://reviews.llvm.org/D98859		2021-04-15 11:02:14 +03:00
..
examples
lit	Reland "[lit] Handle plain negations directly in the internal shell"	2021-04-15 11:02:14 +03:00
tests	Reland "[lit] Handle plain negations directly in the internal shell"	2021-04-15 11:02:14 +03:00
utils
CMakeLists.txt
LICENSE.TXT	[lit] Ship and bundle license for lit package	2020-10-30 15:34:00 +01:00
lit.py	[lit] Update lit.py shebang for Python3	2021-01-25 17:29:57 -08:00
MANIFEST.in
README.txt
setup.py	[Branch-Rename] Fix some links	2021-02-01 16:43:21 +05:30

README.txt

===============================
 lit - A Software Testing Tool
===============================

lit is a portable tool for executing LLVM and Clang style test suites,
summarizing their results, and providing indication of failures. lit is designed
to be a lightweight testing tool with as simple a user interface as possible.

=====================
 Contributing to lit
=====================

Please browse the Test Suite > lit category in LLVM's Bugzilla for ideas on
what to work on.

Before submitting patches, run the test suite to ensure nothing has regressed:

    # From within your LLVM source directory.
    utils/lit/lit.py \
        --path /path/to/your/llvm/build/bin \
        utils/lit/tests

Note that lit's tests depend on 'not' and 'FileCheck', LLVM utilities.
You will need to have built LLVM tools in order to run lit's test suite
successfully.

You'll also want to confirm that lit continues to work when testing LLVM.
Follow the instructions in http://llvm.org/docs/TestingGuide.html to run the
regression test suite:

    make check-llvm

And be sure to run the llvm-lit wrapper script as well:

    /path/to/your/llvm/build/bin/llvm-lit utils/lit/tests

Finally, make sure lit works when installed via setuptools:

    python utils/lit/setup.py install
    lit --path /path/to/your/llvm/build/bin utils/lit/tests