commit 34db91f7a47b7bd4aabf1e1dfbaa8a08278bf78d
author Bram Moolenaar <Bram@vim.org> Sat Jun 13 19:00:10 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Sat Jun 13 19:00:10 2020 +0200
tree 116cb78d7fe2603f6213f355ad35c7ccbd3ebcd6
parent c82a5b5da5eab15bc35115545b639fb590272ad7

patch 8.2.0973: Vim9: type is not checked when assigning to a script variable

Problem:    Vim9: type is not checked when assigning to a script variable.
Solution:   Check the type.

src/testdir/test_vim9_script.vim

diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 7674cc0..2fea0de 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -1831,6 +1831,15 @@
   unlet g:var_test
 enddef
 
+def Test_let_type_check()
+  let lines =<< trim END
+    vim9script
+    let var: string
+    var = 1234
+  END
+  CheckScriptFailure(lines, 'E1013:')
+enddef
+
 def Test_forward_declaration()
   let lines =<< trim END
     vim9script