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-rw-r--r--src/nvim/testdir/test_blob.vim3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_blob.vim b/src/nvim/testdir/test_blob.vim
index 19f1f6bd42..a102a4d6bd 100644
--- a/src/nvim/testdir/test_blob.vim
+++ b/src/nvim/testdir/test_blob.vim
@@ -256,6 +256,9 @@ func Test_blob_read_write()
let br = readfile('Xblob', 'B')
call assert_equal(b, br)
call delete('Xblob')
+
+ " This was crashing when calling readfile() with a directory.
+ call assert_fails("call readfile('.', 'B')", 'E17: "." is a directory')
endfunc
" filter() item in blob