patch 8.2.2808: Vim9: increment and decrement not sufficiently tested
Problem: Vim9: increment and decrement not sufficiently tested.
Solution: Add assertions.
diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 246284c..fbc4d92 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -1841,14 +1841,20 @@
var lines =<< trim END
var nr = 7
++nr
- echo nr
+ assert_equal(8, nr)
--nr
- echo nr
+ assert_equal(7, nr)
var ll = [1, 2]
--ll[0]
++ll[1]
- echo ll
+ assert_equal([0, 3], ll)
+
+ g:count = 1
+ ++g:count
+ --g:count
+ assert_equal(1, g:count)
+ unlet g:count
END
CheckDefAndScriptSuccess(lines)
enddef