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Diffstat (limited to 'src/test/isolation/specs/total-cash.spec')
-rw-r--r-- | src/test/isolation/specs/total-cash.spec | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/isolation/specs/total-cash.spec b/src/test/isolation/specs/total-cash.spec new file mode 100644 index 0000000..d98121a --- /dev/null +++ b/src/test/isolation/specs/total-cash.spec @@ -0,0 +1,28 @@ +# Total Cash test +# +# Another famous test of snapshot isolation anomaly. +# +# Any overlap between the transactions must cause a serialization failure. + +setup +{ + CREATE TABLE accounts (accountid text NOT NULL PRIMARY KEY, balance numeric not null); + INSERT INTO accounts VALUES ('checking', 600),('savings',600); +} + +teardown +{ + DROP TABLE accounts; +} + +session s1 +setup { BEGIN ISOLATION LEVEL SERIALIZABLE; } +step wx1 { UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking'; } +step rxy1 { SELECT SUM(balance) FROM accounts; } +step c1 { COMMIT; } + +session s2 +setup { BEGIN ISOLATION LEVEL SERIALIZABLE; } +step wy2 { UPDATE accounts SET balance = balance - 200 WHERE accountid = 'savings'; } +step rxy2 { SELECT SUM(balance) FROM accounts; } +step c2 { COMMIT; } |