30 lines
1.5 KiB
Ruby
30 lines
1.5 KiB
Ruby
# Classroom Scheduling test
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#
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# Ensure that the classroom is not scheduled more than once
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# for any moment in time.
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#
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# Any overlap between the transactions must cause a serialization failure.
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setup
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{
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CREATE TABLE room_reservation (room_id text NOT NULL, start_time timestamp with time zone NOT NULL, end_time timestamp with time zone NOT NULL, description text NOT NULL, CONSTRAINT room_reservation_pkey PRIMARY KEY (room_id, start_time));
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INSERT INTO room_reservation VALUES ('101', TIMESTAMP WITH TIME ZONE '2010-04-01 10:00', TIMESTAMP WITH TIME ZONE '2010-04-01 11:00', 'Bob');
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}
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teardown
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{
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DROP TABLE room_reservation;
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}
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session s1
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setup { BEGIN ISOLATION LEVEL SERIALIZABLE; }
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step rx1 { SELECT count(*) FROM room_reservation WHERE room_id = '101' AND start_time < TIMESTAMP WITH TIME ZONE '2010-04-01 14:00' AND end_time > TIMESTAMP WITH TIME ZONE '2010-04-01 13:00'; }
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step wy1 { INSERT INTO room_reservation VALUES ('101', TIMESTAMP WITH TIME ZONE '2010-04-01 13:00', TIMESTAMP WITH TIME ZONE '2010-04-01 14:00', 'Carol'); }
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step c1 { COMMIT; }
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session s2
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setup { BEGIN ISOLATION LEVEL SERIALIZABLE; }
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step ry2 { SELECT count(*) FROM room_reservation WHERE room_id = '101' AND start_time < TIMESTAMP WITH TIME ZONE '2010-04-01 14:30' AND end_time > TIMESTAMP WITH TIME ZONE '2010-04-01 13:30'; }
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step wx2 { UPDATE room_reservation SET start_time = TIMESTAMP WITH TIME ZONE '2010-04-01 13:30', end_time = TIMESTAMP WITH TIME ZONE '2010-04-01 14:30' WHERE room_id = '101' AND start_time = TIMESTAMP WITH TIME ZONE '2010-04-01 10:00'; }
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step c2 { COMMIT; }
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