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Dan Liew a120c804c6 [lit] Remove a timing senstive part of `shtest-timeout.py` The `shtest-timeout.py` test was failing intermittently. It looks like the issue is that on a resource constrained system lit is unable to run `quick_then_slow.py` twice and print out the messages the tests expects within the one second timeout. The underlying issue is that the test is dependent on the performance of the host machine is a rather fragile way. This is due to hardcoding timeout values and having assumptions that the host machine is able to perform a certain amount of work within the hardcoded timeout values. We could increase the timeout values but that doesn't really fix the underlying issue. Instead this patch removes one of fragile assumptions in the hope that this will be enough to fix the bots. There are other fragile assumptions in this test (e.g. `quick.py` can be executed in less than 1 second). If the bots continue to fail we'll have to revisit this. rdar://problem/38774530 llvm-svn: 328702		2018-03-28 13:55:08 +00:00
..
examples
lit	Revert "Revert "[lit] Generalized /dev/null support on Windows.""	2018-03-27 01:39:17 +00:00
tests	[lit] Remove a timing senstive part of `shtest-timeout.py`	2018-03-28 13:55:08 +00:00
utils
CMakeLists.txt	[lit] Add a test for the builtin config map.	2017-09-21 16:18:28 +00:00
lit.py	[lit] Undo the patch to stop writing pyc files.	2017-09-20 20:31:24 +00:00
MANIFEST.in
README.txt
setup.py

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