Handle USE_MODULE_DB for all tests able to use an installed postmaster.

When $(MODULES) and $(MODULE_big) are empty, derive the database name
from the first element of $(REGRESS) instead of using a constant string.
When deriving the database name from $(MODULES), use its first element
instead of the entire list; the earlier approach would fail if any
multi-module directory had $(REGRESS) tests.  Treat isolation suites and
src/pl correspondingly.  Under USE_MODULE_DB=1, installcheck-world and
check-world no longer reuse any database name in a given postmaster.
Buildfarm members axolotl, mandrill and frogfish saw spurious "is being
accessed by other users" failures that would not have happened without
database name reuse.  (The CountOtherDBBackends() 5s deadline expired
during DROP DATABASE; a backend for an earlier test suite had used the
same database name and had not yet exited.)  Back-patch to 9.4 (all
supported versions), except bits pertaining to isolation suites.

Concept reviewed by Andrew Dunstan, Andres Freund and Tom Lane.

Discussion: https://postgr.es/m/20190401135213.GE891537@rfd.leadboat.com

diff --git a/src/Makefile.global.in b/src/Makefile.global.in
index 50f1bfbe4838e74305a893ee1c033401c45d487a..9c6db7d35ab5287ea614ccbc023c06f8690552e4 100644 (file)
--- a/src/Makefile.global.in
+++ b/src/Makefile.global.in
@@ -552,16 +552,21 @@ submake-generated-headers:
 #
 # Testing support
 
-PL_TESTDB = pl_regression
-CONTRIB_TESTDB = contrib_regression
-ifneq ($(MODULE_big),)
-  CONTRIB_TESTDB_MODULE = contrib_regression_$(MODULE_big)
-else
-  ifneq ($(MODULES),)
-    CONTRIB_TESTDB_MODULE = contrib_regression_$(MODULES)
+ifneq ($(USE_MODULE_DB),)
+  PL_TESTDB = pl_regression_$(NAME)
+  # Replace this with $(or ...) if we ever require GNU make 3.81.
+  ifneq ($(MODULE_big),)
+    CONTRIB_TESTDB=contrib_regression_$(MODULE_big)
   else
-    CONTRIB_TESTDB_MODULE = contrib_regression
+    ifneq ($(MODULES),)
+      CONTRIB_TESTDB=contrib_regression_$(word 1,$(MODULES))
+    else
+      CONTRIB_TESTDB=contrib_regression_$(word 1,$(REGRESS))
+    endif
   endif
+else
+  PL_TESTDB = pl_regression
+  CONTRIB_TESTDB = contrib_regression
 endif
 
 ifdef NO_LOCALE

diff --git a/src/makefiles/pgxs.mk b/src/makefiles/pgxs.mk
index 3b639ed4fcbbc09ac75b9fa87a5721043737e7d4..ec4455f27ac8992805ee41e7dd143f9a6ce07493 100644 (file)
--- a/src/makefiles/pgxs.mk
+++ b/src/makefiles/pgxs.mk
@@ -252,12 +252,7 @@ distclean maintainer-clean: clean
 
 ifdef REGRESS
 
-# Select database to use for running the tests
-ifneq ($(USE_MODULE_DB),)
-  REGRESS_OPTS += --dbname=$(CONTRIB_TESTDB_MODULE)
-else
-  REGRESS_OPTS += --dbname=$(CONTRIB_TESTDB)
-endif
+REGRESS_OPTS += --dbname=$(CONTRIB_TESTDB)
 
 # When doing a VPATH build, must copy over the data files so that the
 # driver script can find them.  We have to use an absolute path for