Clean up some pg_dump tests

1) Remove useless entries from "unlike" lists.  Runs that are not
   listed in "like" don't need to be excluded in "unlike".

2) Ensure there is always a "like" list, even if it is empty.  This
   makes the test more self-documenting.

3) Use predefined lists such as %full_runs where appropriate, instead
   of listing all runs separately.

Also add code that checks 1 and 2 automatically and dies with an error
for violations.

Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://www.postgresql.org/message-id/flat/1f8cb371-e84e-434e-0367-6b716fb16fa1@eisentraut.org

src/bin/pg_dump/t/002_pg_dump.pl

@@ -818,7 +818,7 @@ my %tests = (
 		regexp => qr/^\QALTER COLLATION public.test0 OWNER TO \E.+;/m,
 		collation => 1,
 		like => { %full_runs, section_pre_data => 1, },
-		unlike => { %dump_test_schema_runs, no_owner => 1, },
+		unlike => { no_owner => 1, },
 	},
 
 	'ALTER FOREIGN DATA WRAPPER dummy OWNER TO' => {
@@ -977,7 +977,7 @@ my %tests = (
 		create_sql =>
 		  'ALTER SCHEMA public OWNER TO "regress_quoted  \"" role";',
 		regexp => qr/^(GRANT|REVOKE)/m,
-		unlike => { defaults_public_owner => 1 },
+		like => {},
 	},
 
 	'ALTER SEQUENCE test_table_col1_seq' => {
@@ -1285,9 +1285,7 @@ my %tests = (
 		  { %full_runs, %dump_test_schema_runs, section_pre_data => 1, },
 		unlike => {
 			exclude_dump_test_schema => 1,
-			only_dump_test_table => 1,
 			no_owner => 1,
-			role => 1,
 			only_dump_measurement => 1,
 		},
 	},
@@ -1351,7 +1349,6 @@ my %tests = (
 			binary_upgrade => 1,
 			no_large_objects => 1,
 			schema_only => 1,
-			section_pre_data => 1,
 		},
 	},
 
@@ -3210,7 +3207,6 @@ my %tests = (
 			binary_upgrade => 1,
 			exclude_dump_test_schema => 1,
 			schema_only => 1,
-			only_dump_measurement => 1,
 		},
 	},
 
@@ -3457,7 +3453,6 @@ my %tests = (
 	'Disabled trigger on partition is not created' => {
 		regexp => qr/CREATE TRIGGER test_trigger.*ON dump_test_second_schema/,
 		like => {},
-		unlike => { %full_runs, %dump_test_schema_runs },
 	},
 
 	# Triggers on partitions should not be dropped individually
@@ -3834,35 +3829,12 @@ my %tests = (
 		\QCREATE INDEX measurement_city_id_logdate_idx ON ONLY dump_test.measurement USING\E
 		/xm,
 		like => {
-			binary_upgrade => 1,
-			clean => 1,
-			clean_if_exists => 1,
-			compression => 1,
-			createdb => 1,
-			defaults => 1,
-			exclude_test_table => 1,
-			exclude_test_table_data => 1,
-			no_toast_compression => 1,
-			no_large_objects => 1,
-			no_privs => 1,
-			no_owner => 1,
-			no_table_access_method => 1,
-			only_dump_test_schema => 1,
-			pg_dumpall_dbprivs => 1,
-			pg_dumpall_exclude => 1,
-			schema_only => 1,
+			%full_runs,
+			%dump_test_schema_runs,
 			section_post_data => 1,
-			test_schema_plus_large_objects => 1,
-			only_dump_measurement => 1,
-			exclude_measurement_data => 1,
 		},
 		unlike => {
 			exclude_dump_test_schema => 1,
-			only_dump_test_table => 1,
-			pg_dumpall_globals => 1,
-			pg_dumpall_globals_clean => 1,
-			role => 1,
-			section_pre_data => 1,
 			exclude_measurement => 1,
 		},
 	},
@@ -3913,7 +3885,6 @@ my %tests = (
 			role => 1,
 			section_post_data => 1,
 			only_dump_measurement => 1,
-			exclude_measurement_data => 1,
 		},
 		unlike => {
 			exclude_measurement => 1,
@@ -3927,35 +3898,12 @@ my %tests = (
 		\QALTER INDEX dump_test.measurement_pkey ATTACH PARTITION dump_test_second_schema.measurement_y2006m2_pkey\E
 		/xm,
 		like => {
-			binary_upgrade => 1,
-			clean => 1,
-			clean_if_exists => 1,
-			compression => 1,
-			createdb => 1,
-			defaults => 1,
-			exclude_dump_test_schema => 1,
-			exclude_test_table => 1,
-			exclude_test_table_data => 1,
-			no_toast_compression => 1,
-			no_large_objects => 1,
-			no_privs => 1,
-			no_owner => 1,
-			no_table_access_method => 1,
-			pg_dumpall_dbprivs => 1,
-			pg_dumpall_exclude => 1,
+			%full_runs,
 			role => 1,
-			schema_only => 1,
 			section_post_data => 1,
 			only_dump_measurement => 1,
-			exclude_measurement_data => 1,
 		},
 		unlike => {
-			only_dump_test_schema => 1,
-			only_dump_test_table => 1,
-			pg_dumpall_globals => 1,
-			pg_dumpall_globals_clean => 1,
-			section_pre_data => 1,
-			test_schema_plus_large_objects => 1,
 			exclude_measurement => 1,
 		},
 	},
@@ -4929,6 +4877,22 @@ foreach my $run (sort keys %pgdump_runs)
 			$test_db = $tests{$test}->{database};
 		}
 
+		# Check for proper test definitions
+		#
+		# There should be a "like" list, even if it is empty.  (This
+		# makes the test more self-documenting.)
+		if (!defined($tests{$test}->{like}))
+		{
+			die "missing \"like\" in test \"$test\"";
+		}
+		# Check for useless entries in "unlike" list.  Runs that are
+		# not listed in "like" don't need to be excluded in "unlike".
+		if ($tests{$test}->{unlike}->{$test_key} &&
+			!defined($tests{$test}->{like}->{$test_key}))
+		{
+			die "useless \"unlike\" entry \"$test_key\" in test \"$test\"";
+		}
+
 		# Skip any collation-related commands if there is no collation support
 		if (!$collation_support && defined($tests{$test}->{collation}))
 		{