pageinspect: Add tests

This commit is contained in:
Peter Eisentraut 2016-09-29 12:00:00 -04:00
parent 3a47c704fb
commit adfb81d9e1
10 changed files with 284 additions and 0 deletions

4
contrib/pageinspect/.gitignore vendored Normal file
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# Generated subdirectories
/log/
/results/
/tmp_check/

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@ -11,6 +11,8 @@ DATA = pageinspect--1.5.sql pageinspect--1.4--1.5.sql \
pageinspect--unpackaged--1.0.sql
PGFILEDESC = "pageinspect - functions to inspect contents of database pages"
REGRESS = page btree brin gin
ifdef USE_PGXS
PG_CONFIG = pg_config
PGXS := $(shell $(PG_CONFIG) --pgxs)

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CREATE TABLE test1 (a int, b text);
INSERT INTO test1 VALUES (1, 'one');
CREATE INDEX test1_a_idx ON test1 USING brin (a);
SELECT brin_page_type(get_raw_page('test1_a_idx', 0));
brin_page_type
----------------
meta
(1 row)
SELECT brin_page_type(get_raw_page('test1_a_idx', 1));
brin_page_type
----------------
revmap
(1 row)
SELECT brin_page_type(get_raw_page('test1_a_idx', 2));
brin_page_type
----------------
regular
(1 row)
SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 0));
magic | version | pagesperrange | lastrevmappage
------------+---------+---------------+----------------
0xA8109CFA | 1 | 128 | 1
(1 row)
SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 1));
ERROR: page is not a BRIN page of type "metapage"
DETAIL: Expected special type 0000f091, got 0000f092.
SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 0)) LIMIT 5;
ERROR: page is not a BRIN page of type "revmap"
DETAIL: Expected special type 0000f092, got 0000f091.
SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 1)) LIMIT 5;
pages
-------
(2,1)
(0,0)
(0,0)
(0,0)
(0,0)
(5 rows)
SELECT * FROM brin_page_items(get_raw_page('test1_a_idx', 2), 'test1_a_idx')
ORDER BY blknum, attnum LIMIT 5;
itemoffset | blknum | attnum | allnulls | hasnulls | placeholder | value
------------+--------+--------+----------+----------+-------------+----------
1 | 0 | 1 | f | f | f | {1 .. 1}
(1 row)
DROP TABLE test1;

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CREATE TABLE test1 (a int, b text);
INSERT INTO test1 VALUES (1, 'one');
CREATE INDEX test1_a_idx ON test1 USING btree (a);
\x
SELECT * FROM bt_metap('test1_a_idx');
-[ RECORD 1 ]-----
magic | 340322
version | 2
root | 1
level | 0
fastroot | 1
fastlevel | 0
SELECT * FROM bt_page_stats('test1_a_idx', 0);
ERROR: block 0 is a meta page
SELECT * FROM bt_page_stats('test1_a_idx', 1);
-[ RECORD 1 ]-+-----
blkno | 1
type | l
live_items | 1
dead_items | 0
avg_item_size | 16
page_size | 8192
free_size | 8128
btpo_prev | 0
btpo_next | 0
btpo | 0
btpo_flags | 3
SELECT * FROM bt_page_stats('test1_a_idx', 2);
ERROR: block number out of range
SELECT * FROM bt_page_items('test1_a_idx', 0);
ERROR: block 0 is a meta page
SELECT * FROM bt_page_items('test1_a_idx', 1);
-[ RECORD 1 ]-----------------------
itemoffset | 1
ctid | (0,1)
itemlen | 16
nulls | f
vars | f
data | 01 00 00 00 00 00 00 00
SELECT * FROM bt_page_items('test1_a_idx', 2);
ERROR: block number out of range
DROP TABLE test1;

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CREATE TABLE test1 (x int, y int[]);
INSERT INTO test1 VALUES (1, ARRAY[11, 111]);
CREATE INDEX test1_y_idx ON test1 USING gin (y);
\x
SELECT * FROM gin_metapage_info(get_raw_page('test1_y_idx', 0));
-[ RECORD 1 ]----+-----------
pending_head | 4294967295
pending_tail | 4294967295
tail_free_size | 0
n_pending_pages | 0
n_pending_tuples | 0
n_total_pages | 2
n_entry_pages | 1
n_data_pages | 0
n_entries | 2
version | 2
SELECT * FROM gin_metapage_info(get_raw_page('test1_y_idx', 1));
ERROR: input page is not a GIN metapage
DETAIL: Flags 0002, expected 0008
SELECT * FROM gin_page_opaque_info(get_raw_page('test1_y_idx', 1));
-[ RECORD 1 ]---------
rightlink | 4294967295
maxoff | 0
flags | {leaf}
SELECT * FROM gin_leafpage_items(get_raw_page('test1_y_idx', 1));
ERROR: input page is not a compressed GIN data leaf page
DETAIL: Flags 0002, expected 0083
DROP TABLE test1;

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CREATE EXTENSION pageinspect;
CREATE TABLE test1 (a int, b text);
INSERT INTO test1 VALUES (1, 'one');
VACUUM test1; -- set up FSM
-- The page contents can vary, so just test that it can be read
-- successfully, but don't keep the output.
SELECT octet_length(get_raw_page('test1', 'main', 0)) AS main_0;
main_0
--------
8192
(1 row)
SELECT octet_length(get_raw_page('test1', 'main', 1)) AS main_1;
ERROR: block number 1 is out of range for relation "test1"
SELECT octet_length(get_raw_page('test1', 'fsm', 0)) AS fsm_0;
fsm_0
-------
8192
(1 row)
SELECT octet_length(get_raw_page('test1', 'fsm', 1)) AS fsm_1;
fsm_1
-------
8192
(1 row)
SELECT octet_length(get_raw_page('test1', 'vm', 0)) AS vm_0;
vm_0
------
8192
(1 row)
SELECT octet_length(get_raw_page('test1', 'vm', 1)) AS vm_1;
ERROR: block number 1 is out of range for relation "test1"
SELECT octet_length(get_raw_page('xxx', 'main', 0));
ERROR: relation "xxx" does not exist
SELECT octet_length(get_raw_page('test1', 'xxx', 0));
ERROR: invalid fork name
HINT: Valid fork names are "main", "fsm", "vm", and "init".
SELECT get_raw_page('test1', 0) = get_raw_page('test1', 'main', 0);
?column?
----------
t
(1 row)
SELECT tuple_data_split('test1'::regclass, t_data, t_infomask, t_infomask2, t_bits)
FROM heap_page_items(get_raw_page('test1', 0));
tuple_data_split
-------------------------------
{"\\x01000000","\\x096f6e65"}
(1 row)
SELECT * FROM fsm_page_contents(get_raw_page('test1', 'fsm', 0));
fsm_page_contents
-------------------
0: 254 +
1: 254 +
3: 254 +
7: 254 +
15: 254 +
31: 254 +
63: 254 +
127: 254 +
255: 254 +
511: 254 +
1023: 254 +
2047: 254 +
4095: 254 +
fp_next_slot: 0 +
(1 row)
DROP TABLE test1;

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CREATE TABLE test1 (a int, b text);
INSERT INTO test1 VALUES (1, 'one');
CREATE INDEX test1_a_idx ON test1 USING brin (a);
SELECT brin_page_type(get_raw_page('test1_a_idx', 0));
SELECT brin_page_type(get_raw_page('test1_a_idx', 1));
SELECT brin_page_type(get_raw_page('test1_a_idx', 2));
SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 0));
SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 1));
SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 0)) LIMIT 5;
SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 1)) LIMIT 5;
SELECT * FROM brin_page_items(get_raw_page('test1_a_idx', 2), 'test1_a_idx')
ORDER BY blknum, attnum LIMIT 5;
DROP TABLE test1;

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CREATE TABLE test1 (a int, b text);
INSERT INTO test1 VALUES (1, 'one');
CREATE INDEX test1_a_idx ON test1 USING btree (a);
\x
SELECT * FROM bt_metap('test1_a_idx');
SELECT * FROM bt_page_stats('test1_a_idx', 0);
SELECT * FROM bt_page_stats('test1_a_idx', 1);
SELECT * FROM bt_page_stats('test1_a_idx', 2);
SELECT * FROM bt_page_items('test1_a_idx', 0);
SELECT * FROM bt_page_items('test1_a_idx', 1);
SELECT * FROM bt_page_items('test1_a_idx', 2);
DROP TABLE test1;

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CREATE TABLE test1 (x int, y int[]);
INSERT INTO test1 VALUES (1, ARRAY[11, 111]);
CREATE INDEX test1_y_idx ON test1 USING gin (y);
\x
SELECT * FROM gin_metapage_info(get_raw_page('test1_y_idx', 0));
SELECT * FROM gin_metapage_info(get_raw_page('test1_y_idx', 1));
SELECT * FROM gin_page_opaque_info(get_raw_page('test1_y_idx', 1));
SELECT * FROM gin_leafpage_items(get_raw_page('test1_y_idx', 1));
DROP TABLE test1;

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CREATE EXTENSION pageinspect;
CREATE TABLE test1 (a int, b text);
INSERT INTO test1 VALUES (1, 'one');
VACUUM test1; -- set up FSM
-- The page contents can vary, so just test that it can be read
-- successfully, but don't keep the output.
SELECT octet_length(get_raw_page('test1', 'main', 0)) AS main_0;
SELECT octet_length(get_raw_page('test1', 'main', 1)) AS main_1;
SELECT octet_length(get_raw_page('test1', 'fsm', 0)) AS fsm_0;
SELECT octet_length(get_raw_page('test1', 'fsm', 1)) AS fsm_1;
SELECT octet_length(get_raw_page('test1', 'vm', 0)) AS vm_0;
SELECT octet_length(get_raw_page('test1', 'vm', 1)) AS vm_1;
SELECT octet_length(get_raw_page('xxx', 'main', 0));
SELECT octet_length(get_raw_page('test1', 'xxx', 0));
SELECT get_raw_page('test1', 0) = get_raw_page('test1', 'main', 0);
SELECT tuple_data_split('test1'::regclass, t_data, t_infomask, t_infomask2, t_bits)
FROM heap_page_items(get_raw_page('test1', 0));
SELECT * FROM fsm_page_contents(get_raw_page('test1', 'fsm', 0));
DROP TABLE test1;