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-rw-r--r--src/testdir/test_vim9_builtin.vim7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index f6b5a099b..8a6af5734 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -104,6 +104,13 @@ def Test_add_list()
add(l, 123)
END
CheckScriptSuccess(lines)
+
+ lines =<< trim END
+ vim9script
+ var l: list<string> = ['a']
+ l->add(123)
+ END
+ CheckScriptFailure(lines, 'E1012: Type mismatch; expected string but got number', 3)
enddef
def Test_add_blob()