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Improve readability of some tests in strings.sql

c251336 has added some tests to check if a toast relation should beempty or not, hardcoding the toast relation name when callingpg_relation_size(). pg_class.reltoastrelid offers the same information,so simplify the tests to use that.Reviewed-by: Daniel GustafssonDiscussion:https://postgr.es/m/20190403065949.GH3298@paquier.xyz

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+12

-8

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src/test/regress
- expected
  - strings.out
- sql
  - strings.sql

2 files changed

+12

-8

lines changed

`‎src/test/regress/expected/strings.out`

Lines changed: 8 additions & 6 deletions

Original file line number	Diff line number	Diff line change
`@@ -1190,9 +1190,10 @@ INSERT INTO toasttest values (repeat('1234567890',300));`
`1190`	`1190`	`INSERT INTO toasttest values (repeat('1234567890',300));`
`1191`	`1191`	`INSERT INTO toasttest values (repeat('1234567890',300));`
`1192`	`1192`	`-- expect >0 blocks`
`1193`		`-select 0 = pg_relation_size('pg_toast.pg_toast_'\|\|(select oid from pg_class where relname = 'toasttest'))/current_setting('block_size')::integer as blocks;`
`1194`		`- blocks`
`1195`		`---------`
	`1193`	`+SELECT pg_relation_size(reltoastrelid) = 0 AS is_empty`
	`1194`	`+ FROM pg_class where relname = 'toasttest';`
	`1195`	`+ is_empty`
	`1196`	`+----------`
`1196`	`1197`	`f`
`1197`	`1198`	`(1 row)`
`1198`	`1199`
`@@ -1203,9 +1204,10 @@ INSERT INTO toasttest values (repeat('1234567890',300));`
`1203`	`1204`	`INSERT INTO toasttest values (repeat('1234567890',300));`
`1204`	`1205`	`INSERT INTO toasttest values (repeat('1234567890',300));`
`1205`	`1206`	`-- expect 0 blocks`
`1206`		`-select 0 = pg_relation_size('pg_toast.pg_toast_'\|\|(select oid from pg_class where relname = 'toasttest'))/current_setting('block_size')::integer as blocks;`
`1207`		`- blocks`
`1208`		`---------`
	`1207`	`+SELECT pg_relation_size(reltoastrelid) = 0 AS is_empty`
	`1208`	`+ FROM pg_class where relname = 'toasttest';`
	`1209`	`+ is_empty`
	`1210`	`+----------`
`1209`	`1211`	`t`
`1210`	`1212`	`(1 row)`
`1211`	`1213`

`‎src/test/regress/sql/strings.sql`

Lines changed: 4 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -375,7 +375,8 @@ INSERT INTO toasttest values (repeat('1234567890',300));`
`375`	`375`	`INSERT INTO toasttestvalues (repeat('1234567890',300));`
`376`	`376`	`INSERT INTO toasttestvalues (repeat('1234567890',300));`
`377`	`377`	`-- expect >0 blocks`
`378`		`-select0= pg_relation_size('pg_toast.pg_toast_'\|\|(selectoidfrom pg_classwhere relname='toasttest'))/current_setting('block_size')::integeras blocks;`
	`378`	`+SELECT pg_relation_size(reltoastrelid)=0AS is_empty`
	`379`	`+FROM pg_classwhere relname='toasttest';`
`379`	`380`
`380`	`381`	`TRUNCATE TABLE toasttest;`
`381`	`382`	`ALTERTABLE toasttestset (toast_tuple_target=4080);`
`@@ -384,7 +385,8 @@ INSERT INTO toasttest values (repeat('1234567890',300));`
`384`	`385`	`INSERT INTO toasttestvalues (repeat('1234567890',300));`
`385`	`386`	`INSERT INTO toasttestvalues (repeat('1234567890',300));`
`386`	`387`	`-- expect 0 blocks`
`387`		`-select0= pg_relation_size('pg_toast.pg_toast_'\|\|(selectoidfrom pg_classwhere relname='toasttest'))/current_setting('block_size')::integeras blocks;`
	`388`	`+SELECT pg_relation_size(reltoastrelid)=0AS is_empty`
	`389`	`+FROM pg_classwhere relname='toasttest';`
`388`	`390`
`389`	`391`	`DROPTABLE toasttest;`
`390`	`392`

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Commit92c7602

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`‎src/test/regress/expected/strings.out`

`‎src/test/regress/sql/strings.sql`

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