Fix flaky test cases. NFC. (#110)

Author: higuoxing

gpcontrib/diskquota/tests/regress/expected/test_uncommitted_table_size.out

@@ -110,16 +110,11 @@ SELECT pg_sleep(5);
 
 (1 row)
 
-SELECT tableid::regclass, size, segid FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1;
- tableid |  size   | segid 
----------+---------+-------
- ao      | 1263784 |    -1
-(1 row)
-
-SELECT pg_table_size('ao');
- pg_table_size 
----------------
-       1263784
+SELECT (SELECT size FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1)=
+       (SELECT pg_table_size('ao'));
+ ?column? 
+----------
+ t
 (1 row)
 
 commit;
@@ -157,16 +152,11 @@ SELECT pg_sleep(5);
 
 (1 row)
 
-SELECT tableid::regclass, size, segid FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1;
- tableid |  size  | segid 
----------+--------+-------
- ao      | 329576 |    -1
-(1 row)
-
-SELECT pg_table_size('ao');
- pg_table_size 
----------------
-        329576
+SELECT (SELECT size FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1)=
+       (SELECT pg_table_size('ao'));
+ ?column? 
+----------
+ t
 (1 row)
 
 commit;

gpcontrib/diskquota/tests/regress/sql/test_uncommitted_table_size.sql

@@ -44,8 +44,8 @@ begin;
 CREATE TABLE ao (i int) WITH (appendonly=true);
 INSERT INTO ao SELECT generate_series(1, 100000);
 SELECT pg_sleep(5);
-SELECT tableid::regclass, size, segid FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1;
-SELECT pg_table_size('ao');
+SELECT (SELECT size FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1)=
+       (SELECT pg_table_size('ao'));
 commit;
 
 -- AO table index
@@ -62,8 +62,8 @@ DROP TABLE ao;
 begin;
 CREATE TABLE ao WITH(appendonly=true) AS SELECT generate_series(1, 10000);
 SELECT pg_sleep(5);
-SELECT tableid::regclass, size, segid FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1;
-SELECT pg_table_size('ao');
+SELECT (SELECT size FROM diskquota.table_size WHERE tableid = 'ao'::regclass and segid = -1)=
+       (SELECT pg_table_size('ao'));
 commit;
 DROP TABLE ao;
 
@@ -93,4 +93,4 @@ SELECT pg_sleep(5);
 SELECT tableid::regclass, size, segid FROM diskquota.table_size WHERE tableid = 'aocs'::regclass and segid = -1;
 SELECT pg_table_size('aocs');
 commit;
-DROP TABLE aocs;
+DROP TABLE aocs;