ci: Check and confirm Vim feature flags exist before testing
Vim tests for features such as python3 relies on checking the feature
flag exists by doing `has('python3')`. However, if the feature itself is
broken and the flag returns 0, the relevant tests will simply silently
get ignored and CI will passed erroneously. As a preventive measure, as
basic checks to make sure certain feature flags are correct as a basic
smoke test.
Currently only checking two types of feature flags:
1. Features that depend on system packages being installed properly
(e.g. sodium) and could be erroneously dropped if the CI environment
changed or a bug exists in the configure script.
2. Scripting languages. When in dynamic mode, these feature flags (e.g.
"ruby", "python3") will return 0 when the lib cannot be found or the
code has an initialization bug. This happened in #16964 where CI
still passed despite Python 3 being broken.
closes: #16998
Signed-off-by: Yee Cheng Chin <ychin.git@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/ci/if_ver-2.vim b/ci/if_ver-2.vim
index 83e80e4..f717ec1 100644
--- a/ci/if_ver-2.vim
+++ b/ci/if_ver-2.vim
@@ -1,6 +1,8 @@
-" Print py3 interface versions for Ubuntu. Part 2.
+" Print py3 interface versions. Part 2.
+" This is done separately from part 1 because Vim cannot concurrently load
+" Python 2 and 3 together.
-if 1
+if 1 " This prevents it from being run in tiny versions
execute 'source' expand('<sfile>:h') .. '/if_ver-cmd.vim'
echo 'Python 3:'