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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.
This commit is contained in:
Tom Lane
parent
2103218dd4
commit
c0f27628d2
@ -29,42 +29,73 @@ SELECT uuid_ns_x500();
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6ba7b814-9dad-11d1-80b4-00c04fd430c8
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(1 row)
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SELECT uuid_generate_v1() < uuid_generate_v1();
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-- some quick and dirty field extraction functions
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-- this is actually timestamp concatenated with clock sequence, per RFC 4122
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CREATE FUNCTION uuid_timestamp_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 15, 4) || substr($1::text, 10, 4) ||
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substr($1::text, 1, 8) || substr($1::text, 20, 4))::bit(80)
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& x'0FFFFFFFFFFFFFFF3FFF' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_version_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 15, 2))::bit(8) & '11110000' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_reserved_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 20, 2))::bit(8) & '11000000' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_multicast_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 25, 2))::bit(8) & '00000011' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_node(uuid) RETURNS text AS
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$$ SELECT substr($1::text, 25) $$
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LANGUAGE SQL STRICT IMMUTABLE;
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SELECT uuid_version_bits(uuid_generate_v1()),
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uuid_reserved_bits(uuid_generate_v1()),
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uuid_multicast_bits(uuid_generate_v1());
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uuid_version_bits | uuid_reserved_bits | uuid_multicast_bits
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-------------------+--------------------+---------------------
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00010000 | 10000000 | 00000000
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(1 row)
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SELECT uuid_version_bits(uuid_generate_v1mc()),
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uuid_reserved_bits(uuid_generate_v1mc()),
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uuid_multicast_bits(uuid_generate_v1mc());
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uuid_version_bits | uuid_reserved_bits | uuid_multicast_bits
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-------------------+--------------------+---------------------
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00010000 | 10000000 | 00000011
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(1 row)
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-- timestamp+clock sequence should be monotonic increasing in v1
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SELECT uuid_timestamp_bits(uuid_generate_v1()) < uuid_timestamp_bits(uuid_generate_v1());
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?column?
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----------
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t
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(1 row)
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SELECT uuid_generate_v1() < uuid_generate_v1mc();
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SELECT uuid_timestamp_bits(uuid_generate_v1mc()) < uuid_timestamp_bits(uuid_generate_v1mc());
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?column?
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----------
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t
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(1 row)
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SELECT substr(uuid_generate_v1()::text, 25) = substr(uuid_generate_v1()::text, 25);
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-- node should be stable in v1, but not v1mc
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SELECT uuid_node(uuid_generate_v1()) = uuid_node(uuid_generate_v1());
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?column?
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----------
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t
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(1 row)
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SELECT substr(uuid_generate_v1()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
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SELECT uuid_node(uuid_generate_v1()) <> uuid_node(uuid_generate_v1mc());
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?column?
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----------
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t
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(1 row)
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SELECT substr(uuid_generate_v1mc()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
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SELECT uuid_node(uuid_generate_v1mc()) <> uuid_node(uuid_generate_v1mc());
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?column?
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----------
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t
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(1 row)
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SELECT ('x' || substr(uuid_generate_v1mc()::text, 25, 2))::bit(8) & '00000011';
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?column?
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----------
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00000011
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(1 row)
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SELECT uuid_generate_v3(uuid_ns_dns(), 'www.widgets.com');
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uuid_generate_v3
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--------------------------------------
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@ -77,10 +108,11 @@ SELECT uuid_generate_v5(uuid_ns_dns(), 'www.widgets.com');
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21f7f8de-8051-5b89-8680-0195ef798b6a
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(1 row)
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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}$';
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?column?
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----------
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t
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SELECT uuid_version_bits(uuid_generate_v4()),
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uuid_reserved_bits(uuid_generate_v4());
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uuid_version_bits | uuid_reserved_bits
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-------------------+--------------------
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01000000 | 10000000
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(1 row)
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SELECT uuid_generate_v4() <> uuid_generate_v4();
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@ -6,17 +6,52 @@ SELECT uuid_ns_url();
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SELECT uuid_ns_oid();
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SELECT uuid_ns_x500();
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SELECT uuid_generate_v1() < uuid_generate_v1();
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SELECT uuid_generate_v1() < uuid_generate_v1mc();
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-- some quick and dirty field extraction functions
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SELECT substr(uuid_generate_v1()::text, 25) = substr(uuid_generate_v1()::text, 25);
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SELECT substr(uuid_generate_v1()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
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SELECT substr(uuid_generate_v1mc()::text, 25) <> substr(uuid_generate_v1mc()::text, 25);
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-- this is actually timestamp concatenated with clock sequence, per RFC 4122
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CREATE FUNCTION uuid_timestamp_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 15, 4) || substr($1::text, 10, 4) ||
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substr($1::text, 1, 8) || substr($1::text, 20, 4))::bit(80)
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& x'0FFFFFFFFFFFFFFF3FFF' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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SELECT ('x' || substr(uuid_generate_v1mc()::text, 25, 2))::bit(8) & '00000011';
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CREATE FUNCTION uuid_version_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 15, 2))::bit(8) & '11110000' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_reserved_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 20, 2))::bit(8) & '11000000' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_multicast_bits(uuid) RETURNS varbit AS
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$$ SELECT ('x' || substr($1::text, 25, 2))::bit(8) & '00000011' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_node(uuid) RETURNS text AS
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$$ SELECT substr($1::text, 25) $$
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LANGUAGE SQL STRICT IMMUTABLE;
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SELECT uuid_version_bits(uuid_generate_v1()),
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uuid_reserved_bits(uuid_generate_v1()),
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uuid_multicast_bits(uuid_generate_v1());
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SELECT uuid_version_bits(uuid_generate_v1mc()),
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uuid_reserved_bits(uuid_generate_v1mc()),
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uuid_multicast_bits(uuid_generate_v1mc());
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-- timestamp+clock sequence should be monotonic increasing in v1
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SELECT uuid_timestamp_bits(uuid_generate_v1()) < uuid_timestamp_bits(uuid_generate_v1());
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SELECT uuid_timestamp_bits(uuid_generate_v1mc()) < uuid_timestamp_bits(uuid_generate_v1mc());
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-- node should be stable in v1, but not v1mc
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SELECT uuid_node(uuid_generate_v1()) = uuid_node(uuid_generate_v1());
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SELECT uuid_node(uuid_generate_v1()) <> uuid_node(uuid_generate_v1mc());
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SELECT uuid_node(uuid_generate_v1mc()) <> uuid_node(uuid_generate_v1mc());
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SELECT uuid_generate_v3(uuid_ns_dns(), 'www.widgets.com');
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SELECT uuid_generate_v5(uuid_ns_dns(), 'www.widgets.com');
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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}$';
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SELECT uuid_version_bits(uuid_generate_v4()),
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uuid_reserved_bits(uuid_generate_v4());
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SELECT uuid_generate_v4() <> uuid_generate_v4();
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