Fix pretty-printing nested empty lists and add test suite

The earlier "test" was just hitting the code without actually checking the
output.  This new suite is a set of pretty-printed documents which serd must
reproduce from a model exactly to pass.  This should make it easy to add cases
in the future, since each case is just a document, as it should look.

1 files changed, 8 insertions, 0 deletions

diff --git a/test/pretty/list-object.ttl b/test/pretty/list-object.ttl
new file mode 100644
index 00000000..735d9df6
--- /dev/null
+++ b/test/pretty/list-object.ttl
@@ -0,0 +1,8 @@
+@prefix eg: <http://example.org/> .
+
+eg:s
+	eg:list (
+		"apple"
+		"banana"
+		"cherry"
+	) .