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25dd07e0f6
The previous version of these tests expected uuid_generate_v1() to always emit MAC addresses with the local-admin and multicast address bits zero. However, several of the buildfarm critters are reporting values with the local-admin bit set. (Perhaps they're running inside VMs or jails.) And a couple are reporting values with the multicast bit set, probably meaning that the UUID library couldn't read the system MAC address. Also, it emerges that if OSSP UUID can't read the system MAC address, it falls back to V1MC behavior wherein the whole node field gets randomized each time, breaking the test that expected the node field to remain stable in V1 output. (It looks like e2fs doesn't behave that way, though.) It's not entirely clear why we can't get a system MAC address, since the buildfarm scripts would not work without internet access. Nonetheless, the regression tests had better cope with the case, so adjust the tests to expect these behaviors.
76 lines
3.1 KiB
PL/PgSQL
76 lines
3.1 KiB
PL/PgSQL
CREATE EXTENSION "uuid-ossp";
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SELECT uuid_nil();
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SELECT uuid_ns_dns();
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SELECT uuid_ns_url();
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SELECT uuid_ns_oid();
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SELECT uuid_ns_x500();
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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_bit(uuid) RETURNS bool AS
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$$ SELECT (('x' || substr($1::text, 25, 2))::bit(8) & '00000001') != '00000000' $$
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LANGUAGE SQL STRICT IMMUTABLE;
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CREATE FUNCTION uuid_local_admin_bit(uuid) RETURNS bool AS
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$$ SELECT (('x' || substr($1::text, 25, 2))::bit(8) & '00000010') != '00000000' $$
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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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-- Ideally, the multicast bit would never be set in V1 output, but the
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-- UUID library may fall back to MC if it can't get the system MAC address.
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-- Also, the local-admin bit might be set (if so, we're probably inside a VM).
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-- So we can't test either bit here.
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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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-- Although RFC 4122 only requires the multicast bit to be set in V1MC style
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-- UUIDs, our implementation always sets the local-admin bit as well.
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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_bit(uuid_generate_v1mc()),
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uuid_local_admin_bit(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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-- Ideally, the node value is stable in V1 addresses, but OSSP UUID
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-- falls back to V1MC behavior if it can't get the system MAC address.
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SELECT CASE WHEN uuid_multicast_bit(uuid_generate_v1()) AND
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uuid_local_admin_bit(uuid_generate_v1()) THEN
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true -- punt, no test
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ELSE
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uuid_node(uuid_generate_v1()) = uuid_node(uuid_generate_v1())
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END;
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-- In any case, V1MC node addresses should be random.
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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_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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