def test_block_comment():
p = Dhall("{- hop -}")
result = p.BlockComment()
assert result == BlockComment("{- hop -}")
def test_looong_comment():
"Long comments used to fail on recursion error"
cmt = "{-" + (" " * 5000) + "-}"
p = Dhall(cmt)
result = p.BlockComment()
assert result == BlockComment(cmt)