Add test framework and go-sqlsmith

[you06]

Pocket

A test framework support ab/binlog/single test

Running mode

• abtest: running same SQLs in both sides, check consistency from snapshots periodically.

• binlog test: running SQLs in single side, waiting for sync and check check consistency periodically.

• single test: running SQLs in single side and do not check consistency.

Feature

• multi-thread transaction support

• Replay from log

• Stop when meets inconsistency in data checking

go-sqlsmith

A random SQL generator based on parser AST

Support statements

• Select statement

• Insert statement

• Update statement

• Subquery statement

• Create table statement (with partition table support)

Data type support

• int

• varchar

• text

• timestamp

• datetime