Start adding tests, using testament.

FossilOrigin-Name: 6f368f0d303c65000c74f346b7bc39ffca964aff7767c60be2384739e5dc4d72

tests/queries/t_can_execute_a_simple_queries.nim

@@ -0,0 +1,20 @@
+# vim: set et sta sw=4 ts=4 :
+
+import kuzu
+
+let db = newKuzuDatabase()
+let conn = db.connect
+
+var q = conn.query( "CREATE NODE TABLE Doop ( id SERIAL, thing STRING, PRIMARY KEY(id) )" )
+assert typeOf( q ) is KuzuQueryResult
+
+for thing in @[ "Camel", "Lampshade", "Delicious Cake" ]:
+    q = conn.query( "CREATE (d:Doop {thing: '" & thing & "'})" )
+    assert typeOf( q ) is KuzuQueryResult
+
+q = conn.query( "MATCH (d:Doop) RETURN d.thing" )
+assert q.num_columns == 1
+assert q.num_tuples == 3
+assert q.compile_time > 0
+assert q.execution_time > 0
+

tests/queries/t_raises_on_bad_syntax.nim

@@ -0,0 +1,14 @@
+# vim: set et sta sw=4 ts=4 :
+
+import
+    std/re
+import kuzu
+
+let db = newKuzuDatabase()
+let conn = db.connect
+
+try:
+    discard conn.query( "NOPE NOPE NOPE" )
+except KuzuQueryException as err:
+    assert err.msg.contains( re"""Error running query:.*extraneous input 'NOPE'""" )
+