patch 8.2.0576: some errors are not covered by tests
Problem: Some errors are not covered by tests.
Solution: Add a few more tests. (Dominique Pelle, closes #5920)
diff --git a/src/testdir/test_buffer.vim b/src/testdir/test_buffer.vim
index 76fb04b..de16353 100644
--- a/src/testdir/test_buffer.vim
+++ b/src/testdir/test_buffer.vim
@@ -155,4 +155,15 @@
%bwipe!
endfunc
+func Test_buffer_error()
+ new foo1
+ new foo2
+
+ call assert_fails('buffer foo', 'E93:')
+ call assert_fails('buffer bar', 'E94:')
+ call assert_fails('buffer 0', 'E939:')
+
+ %bwipe
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab