add rum test (#1169)

Author: olirice

nix/tests/expected/rum.out

@@ -0,0 +1,38 @@
+create schema v;
+create table v.test_rum(
+  t text,
+  a tsvector
+);
+create trigger tsvectorupdate
+  before update or insert on v.test_rum
+  for each row
+  execute procedure
+    tsvector_update_trigger(
+      'a',
+      'pg_catalog.english',
+      't'
+    );
+insert into v.test_rum(t)
+values
+  ('the situation is most beautiful'),
+  ('it is a beautiful'),
+  ('it looks like a beautiful place');
+create index rumidx on v.test_rum using rum (a rum_tsvector_ops);
+select
+  t,
+  a <=> to_tsquery('english', 'beautiful | place') as rank
+from
+  v.test_rum
+where
+  a @@ to_tsquery('english', 'beautiful | place')
+order by
+  a <=> to_tsquery('english', 'beautiful | place');
+                t                |   rank   
+---------------------------------+----------
+ it looks like a beautiful place |  8.22467
+ the situation is most beautiful | 16.44934
+ it is a beautiful               | 16.44934
+(3 rows)
+
+drop schema v cascade;
+NOTICE:  drop cascades to table v.test_rum

nix/tests/sql/rum.sql

@@ -0,0 +1,37 @@
+create schema v;
+
+create table v.test_rum(
+  t text,
+  a tsvector
+);
+
+create trigger tsvectorupdate
+  before update or insert on v.test_rum
+  for each row
+  execute procedure
+    tsvector_update_trigger(
+      'a',
+      'pg_catalog.english',
+      't'
+    );
+
+insert into v.test_rum(t)
+values
+  ('the situation is most beautiful'),
+  ('it is a beautiful'),
+  ('it looks like a beautiful place');
+
+create index rumidx on v.test_rum using rum (a rum_tsvector_ops);
+
+select
+  t,
+  a <=> to_tsquery('english', 'beautiful | place') as rank
+from
+  v.test_rum
+where
+  a @@ to_tsquery('english', 'beautiful | place')
+order by
+  a <=> to_tsquery('english', 'beautiful | place');
+
+
+drop schema v cascade;