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+--
+-- Test SP-GiST indexes.
+--
+-- There are other tests to test different SP-GiST opclasses. This is for
+-- testing SP-GiST code itself.
+create table spgist_point_tbl(id int4, p point);
+create index spgist_point_idx on spgist_point_tbl using spgist(p) with (fillfactor = 75);
+-- Test vacuum-root operation. It gets invoked when the root is also a leaf,
+-- i.e. the index is very small.
+insert into spgist_point_tbl (id, p)
+select g, point(g*10, g*10) from generate_series(1, 10) g;
+delete from spgist_point_tbl where id < 5;
+vacuum spgist_point_tbl;
+-- Insert more data, to make the index a few levels deep.
+insert into spgist_point_tbl (id, p)
+select g,      point(g*10, g*10) from generate_series(1, 10000) g;
+insert into spgist_point_tbl (id, p)
+select g+100000, point(g*10+1, g*10+1) from generate_series(1, 10000) g;
+-- To test vacuum, delete some entries from all over the index.
+delete from spgist_point_tbl where id % 2 = 1;
+-- And also delete some concentration of values. (SP-GiST doesn't currently
+-- attempt to delete pages even when they become empty, but if it did, this
+-- would exercise it)
+delete from spgist_point_tbl where id < 10000;
+vacuum spgist_point_tbl;
+-- Test rescan paths (cf. bug #15378)
+-- use box and && rather than point, so that rescan happens when the
+-- traverse stack is non-empty
+create table spgist_box_tbl(id serial, b box);
+insert into spgist_box_tbl(b)
+select box(point(i,j),point(i+s,j+s))
+  from generate_series(1,100,5) i,
+       generate_series(1,100,5) j,
+       generate_series(1,10) s;
+create index spgist_box_idx on spgist_box_tbl using spgist (b);
+select count(*)
+  from (values (point(5,5)),(point(8,8)),(point(12,12))) v(p)
+ where exists(select * from spgist_box_tbl b where b.b && box(v.p,v.p));
+ count 
+-------
+     3
+(1 row)
+
+-- The point opclass's choose method only uses the spgMatchNode action,
+-- so the other actions are not tested by the above. Create an index using
+-- text opclass, which uses the others actions.
+create table spgist_text_tbl(id int4, t text);
+create index spgist_text_idx on spgist_text_tbl using spgist(t);
+insert into spgist_text_tbl (id, t)
+select g, 'f' || repeat('o', 100) || g from generate_series(1, 10000) g
+union all
+select g, 'baaaaaaaaaaaaaar' || g from generate_series(1, 1000) g;
+-- Do a lot of insertions that have to split an existing node. Hopefully
+-- one of these will cause the page to run out of space, causing the inner
+-- tuple to be moved to another page.
+insert into spgist_text_tbl (id, t)
+select -g, 'f' || repeat('o', 100-g) || 'surprise' from generate_series(1, 100) g;
+-- Test out-of-range fillfactor values
+create index spgist_point_idx2 on spgist_point_tbl using spgist(p) with (fillfactor = 9);
+ERROR:  value 9 out of bounds for option "fillfactor"
+DETAIL:  Valid values are between "10" and "100".
+create index spgist_point_idx2 on spgist_point_tbl using spgist(p) with (fillfactor = 101);
+ERROR:  value 101 out of bounds for option "fillfactor"
+DETAIL:  Valid values are between "10" and "100".
+-- Modify fillfactor in existing index
+alter index spgist_point_idx set (fillfactor = 90);
+reindex index spgist_point_idx;
+-- Test index over a domain
+create domain spgist_text as varchar;
+create table spgist_domain_tbl (f1 spgist_text);
+create index spgist_domain_idx on spgist_domain_tbl using spgist(f1);
+insert into spgist_domain_tbl values('fee'), ('fi'), ('fo'), ('fum');
+explain (costs off)
+select * from spgist_domain_tbl where f1 = 'fo';
+                  QUERY PLAN                   
+-----------------------------------------------
+ Bitmap Heap Scan on spgist_domain_tbl
+   Recheck Cond: ((f1)::text = 'fo'::text)
+   ->  Bitmap Index Scan on spgist_domain_idx
+         Index Cond: ((f1)::text = 'fo'::text)
+(4 rows)
+
+select * from spgist_domain_tbl where f1 = 'fo';
+ f1 
+----
+ fo
+(1 row)
+
+-- test an unlogged table, mostly to get coverage of spgistbuildempty
+create unlogged table spgist_unlogged_tbl(id serial, b box);
+create index spgist_unlogged_idx on spgist_unlogged_tbl using spgist (b);
+insert into spgist_unlogged_tbl(b)
+select box(point(i,j))
+  from generate_series(1,100,5) i,
+       generate_series(1,10,5) j;
+-- leave this table around, to help in testing dump/restore