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_feat_check.vim b/ci/if_feat_check.vim
new file mode 100644
index 0000000..f846f7c
--- /dev/null
+++ b/ci/if_feat_check.vim
@@ -0,0 +1,15 @@
+if 1 " This prevents it from being run in tiny versions
+ " Check for required features
+ if exists("g:required")
+ for feature in g:required
+ if !has(feature)
+ echo "Error: Feature '" .. feature .. "' not found"
+ echo ''
+ cquit
+ endif
+ endfor
+ echo "\nChecked features: " .. string(g:required)
+ echo ''
+ endif
+endif
+" vim: sts=2 sw=2 et