add isolation tests

Makefile

@@ -35,6 +35,7 @@ DATA = cstore_fdw--1.7.sql cstore_fdw--1.6--1.7.sql  cstore_fdw--1.5--1.6.sql cs
 	   cstore_fdw--1.0--1.1.sql cstore_fdw--1.7--1.8.sql
 
 REGRESS = extension_create
+ISOLATION = create
 EXTRA_CLEAN = cstore.pb-c.h cstore.pb-c.c data/*.cstore data/*.cstore.footer \
               sql/block_filtering.sql sql/create.sql sql/data_types.sql sql/load.sql \
               sql/copyto.sql expected/block_filtering.out expected/create.out \
@@ -54,6 +55,7 @@ ifeq ($(USE_TABLEAM),yes)
 	OBJS += cstore_tableam.o
 	REGRESS += am_create am_load am_query am_analyze am_data_types am_functions \
 	           am_drop am_insert am_copyto am_alter am_rollback am_truncate am_vacuum am_clean
+	ISOLATION += am_vacuum_vs_insert
 endif
 
 ifeq ($(enable_coverage),yes)
@@ -76,6 +78,22 @@ PG_CONFIG = pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)
 include $(PGXS)
 
+# command for getting postgres source directory is taken from citus/configure.in
+POSTGRES_SRCDIR=$(shell grep ^abs_top_srcdir $(shell dirname $(shell $(PG_CONFIG) --pgxs))/../Makefile.global|cut -d ' ' -f3-)
+PGXS_ISOLATION_TESTER=$(top_builddir)/src/test/isolation/pg_isolation_regress
+
+# If postgres installation doesn't include pg_isolation_regress, try using the
+# one in postgres source directory.
+ifeq (,$(wildcard $(PGXS_ISOLATION_TESTER)))
+	pg_isolation_regress_installcheck = \
+		$(POSTGRES_SRCDIR)/src/test/isolation/pg_isolation_regress \
+		--inputdir=$(srcdir) $(EXTRA_REGRESS_OPTS)
+else
+	pg_isolation_regress_installcheck = \
+		$(PGXS_ISOLATION_TESTER) \
+		--inputdir=$(srcdir) $(EXTRA_REGRESS_OPTS)
+endif
+
 installcheck:
 
 reindent:

expected/am_vacuum_vs_insert.out

@@ -0,0 +1,58 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1-insert s1-begin s1-insert s2-vacuum s1-commit s2-select
+step s1-insert: 
+    INSERT INTO test_vacuum_vs_insert SELECT i, 2 * i FROM generate_series(1, 3) i;
+
+step s1-begin: 
+    BEGIN;
+
+step s1-insert: 
+    INSERT INTO test_vacuum_vs_insert SELECT i, 2 * i FROM generate_series(1, 3) i;
+
+step s2-vacuum: 
+    VACUUM test_vacuum_vs_insert;
+
+step s1-commit: 
+    COMMIT;
+
+step s2-select: 
+    SELECT * FROM test_vacuum_vs_insert;
+
+a              b              
+
+1              2              
+2              4              
+3              6              
+1              2              
+2              4              
+3              6              
+
+starting permutation: s1-insert s1-begin s1-insert s2-vacuum-full s1-commit s2-select
+step s1-insert: 
+    INSERT INTO test_vacuum_vs_insert SELECT i, 2 * i FROM generate_series(1, 3) i;
+
+step s1-begin: 
+    BEGIN;
+
+step s1-insert: 
+    INSERT INTO test_vacuum_vs_insert SELECT i, 2 * i FROM generate_series(1, 3) i;
+
+step s2-vacuum-full: 
+    VACUUM FULL test_vacuum_vs_insert;
+ <waiting ...>
+step s1-commit: 
+    COMMIT;
+
+step s2-vacuum-full: <... completed>
+step s2-select: 
+    SELECT * FROM test_vacuum_vs_insert;
+
+a              b              
+
+1              2              
+2              4              
+3              6              
+1              2              
+2              4              
+3              6              

expected/create.out

@@ -0,0 +1,6 @@
+Parsed test spec with 1 sessions
+
+starting permutation: s1a
+step s1a: 
+    CREATE EXTENSION cstore_fdw;
+

specs/am_vacuum_vs_insert.spec

@@ -0,0 +1,47 @@
+setup
+{
+    CREATE TABLE test_vacuum_vs_insert (a int, b int) USING cstore_tableam;
+}
+
+teardown
+{
+    DROP TABLE IF EXISTS test_vacuum_vs_insert CASCADE;
+}
+
+session "s1"
+
+step "s1-begin"
+{
+    BEGIN;
+}
+
+step "s1-insert"
+{
+    INSERT INTO test_vacuum_vs_insert SELECT i, 2 * i FROM generate_series(1, 3) i;
+}
+
+step "s1-commit"
+{
+    COMMIT;
+}
+
+session "s2"
+
+step "s2-vacuum"
+{
+    VACUUM test_vacuum_vs_insert;
+}
+
+step "s2-vacuum-full"
+{
+    VACUUM FULL test_vacuum_vs_insert;
+}
+
+step "s2-select"
+{
+    SELECT * FROM test_vacuum_vs_insert;
+}
+
+permutation "s1-insert" "s1-begin" "s1-insert" "s2-vacuum" "s1-commit" "s2-select"
+permutation "s1-insert" "s1-begin" "s1-insert" "s2-vacuum-full" "s1-commit" "s2-select"
+

specs/create.spec

@@ -0,0 +1,8 @@
+session "s1"
+step "s1a"
+{
+    CREATE EXTENSION cstore_fdw;
+}
+
+permutation "s1a"
+