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Postgres FD Implementation
Commit c0f27628 authored by Tom Lane's avatar Tom Lane
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Improve regression tests for uuid-ossp. 

On reflection, the timestamp-advances test might fail if we're unlucky
enough for the time_mid field to change between two calls, since uuid_cmp
is just bytewise comparison and the field ordering has more significant
fields later.  Build some field extraction functions so we can do a more
honest test of that.  Also check that the version and reserved fields
contain what they should.
parent 2103218d
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Showing with 88 additions and 21 deletions
contrib/uuid-ossp/expected/uuid_ossp.out
View file @ c0f27628
......@@ -29,40 +29,71 @@ SELECT uuid_ns_x500();
6ba7b814-9dad-11d1-80b4-00c04fd430c8
(1 row)
SELECT uuid_generate_v1() < uuid_generate_v1();
?column?
----------
t
-- some quick and dirty field extraction functions
-- this is actually timestamp concatenated with clock sequence, per RFC 4122
CREATE FUNCTION uuid_timestamp_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 15, 4) || substr($1::text, 10, 4) ||
substr($1::text, 1, 8) || substr($1::text, 20, 4))::bit(80)
& x'0FFFFFFFFFFFFFFF3FFF' $$
LANGUAGE SQL STRICT IMMUTABLE;
CREATE FUNCTION uuid_version_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 15, 2))::bit(8) & '11110000' $$
LANGUAGE SQL STRICT IMMUTABLE;
CREATE FUNCTION uuid_reserved_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 20, 2))::bit(8) & '11000000' $$
LANGUAGE SQL STRICT IMMUTABLE;
CREATE FUNCTION uuid_multicast_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 25, 2))::bit(8) & '00000011' $$
LANGUAGE SQL STRICT IMMUTABLE;
CREATE FUNCTION uuid_node(uuid) RETURNS text AS
$$ SELECT substr($1::text, 25) $$
LANGUAGE SQL STRICT IMMUTABLE;
SELECT uuid_version_bits(uuid_generate_v1()),
uuid_reserved_bits(uuid_generate_v1()),
uuid_multicast_bits(uuid_generate_v1());
uuid_version_bits | uuid_reserved_bits | uuid_multicast_bits
-------------------+--------------------+---------------------
00010000 | 10000000 | 00000000
(1 row)
SELECT uuid_version_bits(uuid_generate_v1mc()),
uuid_reserved_bits(uuid_generate_v1mc()),
uuid_multicast_bits(uuid_generate_v1mc());
uuid_version_bits | uuid_reserved_bits | uuid_multicast_bits
-------------------+--------------------+---------------------
00010000 | 10000000 | 00000011
(1 row)
SELECT uuid_generate_v1() < uuid_generate_v1mc();
-- timestamp+clock sequence should be monotonic increasing in v1
SELECT uuid_timestamp_bits(uuid_generate_v1()) < uuid_timestamp_bits(uuid_generate_v1());
?column?
----------
t
(1 row)
SELECT substr(uuid_generate_v1()::text, 25) = substr(uuid_generate_v1()::text, 25);
SELECT uuid_timestamp_bits(uuid_generate_v1mc()) < uuid_timestamp_bits(uuid_generate_v1mc());
?column?
----------
t
(1 row)
SELECT substr(uuid_generate_v1()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
-- node should be stable in v1, but not v1mc
SELECT uuid_node(uuid_generate_v1()) = uuid_node(uuid_generate_v1());
?column?
----------
t
(1 row)
SELECT substr(uuid_generate_v1mc()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
SELECT uuid_node(uuid_generate_v1()) <> uuid_node(uuid_generate_v1mc());
?column?
----------
t
(1 row)
SELECT ('x' || substr(uuid_generate_v1mc()::text, 25, 2))::bit(8) & '00000011';
SELECT uuid_node(uuid_generate_v1mc()) <> uuid_node(uuid_generate_v1mc());
?column?
----------
00000011
t
(1 row)
SELECT uuid_generate_v3(uuid_ns_dns(), 'www.widgets.com');
......@@ -77,10 +108,11 @@ SELECT uuid_generate_v5(uuid_ns_dns(), 'www.widgets.com');
21f7f8de-8051-5b89-8680-0195ef798b6a
(1 row)
SELECT uuid_generate_v4()::text ~ '^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$';
?column?
----------
t
SELECT uuid_version_bits(uuid_generate_v4()),
uuid_reserved_bits(uuid_generate_v4());
uuid_version_bits | uuid_reserved_bits
-------------------+--------------------
01000000 | 10000000
(1 row)
SELECT uuid_generate_v4() <> uuid_generate_v4();
......
contrib/uuid-ossp/sql/uuid_ossp.sql
View file @ c0f27628
......@@ -6,17 +6,52 @@ SELECT uuid_ns_url();
SELECT uuid_ns_oid();
SELECT uuid_ns_x500();
SELECT uuid_generate_v1() < uuid_generate_v1();
SELECT uuid_generate_v1() < uuid_generate_v1mc();
-- some quick and dirty field extraction functions
SELECT substr(uuid_generate_v1()::text, 25) = substr(uuid_generate_v1()::text, 25);
SELECT substr(uuid_generate_v1()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
SELECT substr(uuid_generate_v1mc()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
-- this is actually timestamp concatenated with clock sequence, per RFC 4122
CREATE FUNCTION uuid_timestamp_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 15, 4) || substr($1::text, 10, 4) ||
substr($1::text, 1, 8) || substr($1::text, 20, 4))::bit(80)
& x'0FFFFFFFFFFFFFFF3FFF' $$
LANGUAGE SQL STRICT IMMUTABLE;
SELECT ('x' || substr(uuid_generate_v1mc()::text, 25, 2))::bit(8) & '00000011';
CREATE FUNCTION uuid_version_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 15, 2))::bit(8) & '11110000' $$
LANGUAGE SQL STRICT IMMUTABLE;
CREATE FUNCTION uuid_reserved_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 20, 2))::bit(8) & '11000000' $$
LANGUAGE SQL STRICT IMMUTABLE;
CREATE FUNCTION uuid_multicast_bits(uuid) RETURNS varbit AS
$$ SELECT ('x' || substr($1::text, 25, 2))::bit(8) & '00000011' $$
LANGUAGE SQL STRICT IMMUTABLE;
CREATE FUNCTION uuid_node(uuid) RETURNS text AS
$$ SELECT substr($1::text, 25) $$
LANGUAGE SQL STRICT IMMUTABLE;
SELECT uuid_version_bits(uuid_generate_v1()),
uuid_reserved_bits(uuid_generate_v1()),
uuid_multicast_bits(uuid_generate_v1());
SELECT uuid_version_bits(uuid_generate_v1mc()),
uuid_reserved_bits(uuid_generate_v1mc()),
uuid_multicast_bits(uuid_generate_v1mc());
-- timestamp+clock sequence should be monotonic increasing in v1
SELECT uuid_timestamp_bits(uuid_generate_v1()) < uuid_timestamp_bits(uuid_generate_v1());
SELECT uuid_timestamp_bits(uuid_generate_v1mc()) < uuid_timestamp_bits(uuid_generate_v1mc());
-- node should be stable in v1, but not v1mc
SELECT uuid_node(uuid_generate_v1()) = uuid_node(uuid_generate_v1());
SELECT uuid_node(uuid_generate_v1()) <> uuid_node(uuid_generate_v1mc());
SELECT uuid_node(uuid_generate_v1mc()) <> uuid_node(uuid_generate_v1mc());
SELECT uuid_generate_v3(uuid_ns_dns(), 'www.widgets.com');
SELECT uuid_generate_v5(uuid_ns_dns(), 'www.widgets.com');
SELECT uuid_generate_v4()::text ~ '^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$';
SELECT uuid_version_bits(uuid_generate_v4()),
uuid_reserved_bits(uuid_generate_v4());
SELECT uuid_generate_v4() <> uuid_generate_v4();
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