patch 8.2.4991: no test for hwat patch 8.1.0535 fixes
Problem: No test for hwat patch 8.1.0535 fixes.
Solution: Add a test. (closes #10462)
diff --git a/src/testdir/test_fold.vim b/src/testdir/test_fold.vim
index b0d07db..67a399d 100644
--- a/src/testdir/test_fold.vim
+++ b/src/testdir/test_fold.vim
@@ -231,6 +231,26 @@
set foldmethod& foldexpr&
endfunc
+" Test for what patch 8.1.0535 fixes.
+func Test_foldexpr_no_interrupt_addsub()
+ new
+ func! FoldFunc()
+ call setpos('.', getcurpos())
+ return '='
+ endfunc
+
+ set foldmethod=expr
+ set foldexpr=FoldFunc()
+ call setline(1, '1.2')
+
+ exe "norm! $\<C-A>"
+ call assert_equal('1.3', getline(1))
+
+ bwipe!
+ delfunc FoldFunc
+ set foldmethod& foldexpr&
+endfunc
+
func Check_foldlevels(expected)
call assert_equal(a:expected, map(range(1, line('$')), 'foldlevel(v:val)'))
endfunc