pgsql: worker_spi: Fix test failure with BGWORKER_BYPASS_ALLOWCONN

worker_spi: Fix test failure with BGWORKER_BYPASS_ALLOWCONN

A bgworker can spawn parallel workers of its own when executing queries,
and if the worker uses BGWORKER_BYPASS_ALLOWCONN while the database it
is connected to does not allow connections, a parallel worker would fail
to startup. In the case of this module, the step checking for the
presence of the schema to create was spawning a worker, failing the last
test introduced by 991bb0f9653c.

This issue could be reproduced with debug_parallel_query = 'regress',
for example.

Per buildfarm member crake.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/fd4d93d269c02081958e4c0c214f1d82186e5689

Modified Files
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src/test/modules/worker_spi/worker_spi.c | 9 +++++++++
1 file changed, 9 insertions(+)