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-rw-r--r--src/nvim/testdir/test_filter_map.vim5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_filter_map.vim b/src/nvim/testdir/test_filter_map.vim
index c8d64ce0a4..1dd3a5b29f 100644
--- a/src/nvim/testdir/test_filter_map.vim
+++ b/src/nvim/testdir/test_filter_map.vim
@@ -79,3 +79,8 @@ func Test_filter_map_dict_expr_funcref()
endfunc
call assert_equal({"foo": "f", "bar": "b", "baz": "b"}, map(copy(dict), function('s:filter4')))
endfunc
+
+func Test_map_fails()
+ call assert_fails('call map([1], "42 +")', 'E15:')
+ call assert_fails('call filter([1], "42 +")', 'E15:')
+endfunc