patch 8.2.0144: some mapping code is not fully tested
Problem: Some mapping code is not fully tested.
Solution: Add more test cases. (Yegappan Lakshmanan, closes #5519)
diff --git a/src/testdir/test_langmap.vim b/src/testdir/test_langmap.vim
index 420ff0f..4f831aa 100644
--- a/src/testdir/test_langmap.vim
+++ b/src/testdir/test_langmap.vim
@@ -23,5 +23,32 @@
silent! call feedkeys("gg0}%}\<C-G>}^\<Esc>00", 'tx')
call assert_equal('a}^de', getline(1))
+ " Error cases
+ call assert_fails('set langmap=aA,b', 'E357:')
+ call assert_fails('set langmap=z;y;y;z', 'E358:')
+
+ " Map character > 256
+ enew!
+ set langmap=āx,ăl,āx
+ call setline(1, ['abcde'])
+ call feedkeys('gg2lā', 'tx')
+ call assert_equal('abde', getline(1))
+
+ " special characters in langmap
+ enew!
+ call setline(1, ['Hello World'])
+ set langmap=\\;\\,,\\,\\;
+ call feedkeys('ggfo,', 'tx')
+ call assert_equal(8, col('.'))
+ call feedkeys(';', 'tx')
+ call assert_equal(5, col('.'))
+ set langmap&
+ set langmap=\\;\\,;\\,\\;
+ call feedkeys('ggfo,', 'tx')
+ call assert_equal(8, col('.'))
+ call feedkeys(';', 'tx')
+ call assert_equal(5, col('.'))
+
+ set langmap&
quit!
endfunc