Remove pt-table-sync/issue_79.t (it was broken but coincidentally working) and write better tests in filters.t. Add subs to Sandbox and PerconaTest to clear and parse tables used from the general logs. Set log=genlog in the sandbox configs.

t/lib/samples/SchemaIterator.sql

@@ -1,24 +1,43 @@
+--
+-- d1
+--
 DROP DATABASE IF EXISTS d1;
-DROP DATABASE IF EXISTS d2;
-DROP DATABASE IF EXISTS d3;
-
 CREATE DATABASE d1;
-CREATE DATABASE d2;
-CREATE DATABASE d3;
 
 CREATE TABLE d1.t1 (
-   i int
+  id int auto_increment primary key,
+  c  char(8)
 ) ENGINE=MyISAM CHARSET=utf8;
-INSERT INTO d1.t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9);
+
 CREATE TABLE d1.t2 (
-   c varchar(255)
+  id int auto_increment primary key,
+  c  varchar(8)
 ) ENGINE=InnoDB;
+
 CREATE TABLE d1.t3 (
-   i int
+  id int auto_increment primary key,
+  c  char(8)
 ) ENGINE=MEMORY;
 
-CREATE TABLE d2.t1 (
-   i int
-);
+INSERT INTO d1.t1 VALUES (null, 'a'), (null, 'b'), (null, 'c'), (null, 'd'), (null, 'e'), (null, 'f'), (null, 'g'), (null, 'h'), (null, 'i');
+INSERT INTO d1.t2 SELECT * FROM d1.t1;
+INSERT INTO d1.t3 SELECT * FROM d1.t1;
 
+--
+-- d2
+--
+DROP DATABASE IF EXISTS d2;
+CREATE DATABASE d2;
+
+CREATE TABLE d2.t1 (
+  id int auto_increment primary key,
+  c  char(8)
+);
+-- d2.t1 is an empty table.
+
+--
+-- d3
+--
+DROP DATABASE IF EXISTS d3;
+CREATE DATABASE d3;
 -- d3 is an empty database.