From 11c88e59a60b2096ab42fa7cf9bff542717ec1e0 Mon Sep 17 00:00:00 2001 From: Tom Lane <tgl@sss.pgh.pa.us> Date: Thu, 18 Aug 2011 11:45:25 -0400 Subject: [PATCH] Explain max_prepared_transactions requirement in isolation tests' README. Now that we have a test that requires nondefault settings to pass, it seems like we'd better mention that detail in the directions about how to run the tests. Also do some very minor copy-editing. --- src/test/isolation/README | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/src/test/isolation/README b/src/test/isolation/README index 58fe50e58a2..aeef7f6c3ab 100644 --- a/src/test/isolation/README +++ b/src/test/isolation/README @@ -5,13 +5,20 @@ Isolation tests This directory contains a set of tests for the serializable isolation level. Testing isolation requires running multiple overlapping transactions, -which requires multiple concurrent connections, and can't therefore be +which requires multiple concurrent connections, and therefore can't be tested using the normal pg_regress program. +To run the tests, you need to have a server running at the default port +expected by libpq. (You can set PGPORT and so forth in your environment +to control this.) Then run + gmake installcheck +Note that the prepared-transactions test will not pass unless you have +the server's max_prepared_transactions parameter set to at least 3. + To represent a test with overlapping transactions, we use a test specification -file with a custom syntax, described in the next section. +file with a custom syntax, which is described in the next section. -isolationtester is program that uses libpq to open multiple connections, +isolationtester is a program that uses libpq to open multiple connections, and executes a test specified by a spec file. A libpq connection string specifies the server and database to connect to; defaults derived from environment variables are used otherwise. @@ -19,8 +26,6 @@ environment variables are used otherwise. pg_isolation_regress is a tool similar to pg_regress, but instead of using psql to execute a test, it uses isolationtester. -To run the tests, you need to have a server up and running. Run - gmake installcheck Test specification ================== -- GitLab