1SELECT size, pg_size_pretty(size), pg_size_pretty(-1 * size) FROM
2    (VALUES (10::bigint), (1000::bigint), (1000000::bigint),
3            (1000000000::bigint), (1000000000000::bigint),
4            (1000000000000000::bigint)) x(size);
5
6SELECT size, pg_size_pretty(size), pg_size_pretty(-1 * size) FROM
7    (VALUES (10::numeric), (1000::numeric), (1000000::numeric),
8            (1000000000::numeric), (1000000000000::numeric),
9            (1000000000000000::numeric),
10            (10.5::numeric), (1000.5::numeric), (1000000.5::numeric),
11            (1000000000.5::numeric), (1000000000000.5::numeric),
12            (1000000000000000.5::numeric)) x(size);
13
14-- test where units change up
15SELECT size, pg_size_pretty(size), pg_size_pretty(-1 * size) FROM
16    (VALUES (10239::bigint), (10240::bigint),
17            (10485247::bigint), (10485248::bigint),
18            (10736893951::bigint), (10736893952::bigint),
19            (10994579406847::bigint), (10994579406848::bigint),
20            (11258449312612351::bigint), (11258449312612352::bigint)) x(size);
21
22SELECT size, pg_size_pretty(size), pg_size_pretty(-1 * size) FROM
23    (VALUES (10239::numeric), (10240::numeric),
24            (10485247::numeric), (10485248::numeric),
25            (10736893951::numeric), (10736893952::numeric),
26            (10994579406847::numeric), (10994579406848::numeric),
27            (11258449312612351::numeric), (11258449312612352::numeric)) x(size);
28
29-- pg_size_bytes() tests
30SELECT size, pg_size_bytes(size) FROM
31    (VALUES ('1'), ('123bytes'), ('1kB'), ('1MB'), (' 1 GB'), ('1.5 GB '),
32            ('1TB'), ('3000 TB'), ('1e6 MB')) x(size);
33
34-- case-insensitive units are supported
35SELECT size, pg_size_bytes(size) FROM
36    (VALUES ('1'), ('123bYteS'), ('1kb'), ('1mb'), (' 1 Gb'), ('1.5 gB '),
37            ('1tb'), ('3000 tb'), ('1e6 mb')) x(size);
38
39-- negative numbers are supported
40SELECT size, pg_size_bytes(size) FROM
41    (VALUES ('-1'), ('-123bytes'), ('-1kb'), ('-1mb'), (' -1 Gb'), ('-1.5 gB '),
42            ('-1tb'), ('-3000 TB'), ('-10e-1 MB')) x(size);
43
44-- different cases with allowed points
45SELECT size, pg_size_bytes(size) FROM
46     (VALUES ('-1.'), ('-1.kb'), ('-1. kb'), ('-0. gb'),
47             ('-.1'), ('-.1kb'), ('-.1 kb'), ('-.0 gb')) x(size);
48
49-- invalid inputs
50SELECT pg_size_bytes('1 AB');
51SELECT pg_size_bytes('1 AB A');
52SELECT pg_size_bytes('1 AB A    ');
53SELECT pg_size_bytes('9223372036854775807.9');
54SELECT pg_size_bytes('1e100');
55SELECT pg_size_bytes('1e1000000000000000000');
56SELECT pg_size_bytes('1 byte');  -- the singular "byte" is not supported
57SELECT pg_size_bytes('');
58
59SELECT pg_size_bytes('kb');
60SELECT pg_size_bytes('..');
61SELECT pg_size_bytes('-.');
62SELECT pg_size_bytes('-.kb');
63SELECT pg_size_bytes('-. kb');
64
65SELECT pg_size_bytes('.+912');
66SELECT pg_size_bytes('+912+ kB');
67SELECT pg_size_bytes('++123 kB');
68