pgsql: Improve new AND CHAIN tests - Mailing list pgsql-committers

Improve new AND CHAIN tests

Tweak the tests so that we're not just testing the default setting of
transaction_read_only.

Reported-by: fn ln <emuser20140816@gmail.com>

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/ef48a0573bf0fc5c7e23f077788a055aad9f5e9e

Modified Files
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src/test/regress/expected/transactions.out | 4 ++--
src/test/regress/sql/transactions.sql      | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)