func (s *TestSuite) TestMoveBelowAndBack(c *C) {
clearTestMaintenance()
// become child
slave1, err := inst.MoveBelow(&slave1Key, &slave2Key)
c.Assert(err, IsNil)
c.Assert(slave1.MasterKey.Equals(&slave2Key), Equals, true)
c.Assert(slave1.SlaveRunning(), Equals, true)
// And back; keep topology intact
slave1, _ = inst.MoveUp(&slave1Key)
slave2, _ := inst.ReadTopologyInstance(&slave2Key)
c.Assert(inst.InstancesAreSiblings(slave1, slave2), Equals, true)
c.Assert(slave1.SlaveRunning(), Equals, true)
}
func (s *TestSuite) TestMoveBelowAndBackComplex(c *C) {
clearTestMaintenance()
// become child
slave1, _ := inst.MoveBelow(&slave1Key, &slave2Key)
c.Assert(slave1.MasterKey.Equals(&slave2Key), Equals, true)
c.Assert(slave1.SlaveRunning(), Equals, true)
// Now let's have fun. Stop slave2 (which is now parent of slave1), execute queries on master,
// move s1 back under master, start all, verify queries.
_, err := inst.StopSlave(&slave2Key)
c.Assert(err, IsNil)
randValue := rand.Int()
_, err = inst.ExecInstance(&masterKey, `replace into orchestrator_test.test_table (name, value) values ('TestMoveBelowAndBackComplex', ?)`, randValue)
c.Assert(err, IsNil)
master, err := inst.ReadTopologyInstance(&masterKey)
c.Assert(err, IsNil)
// And back; keep topology intact
slave1, err = inst.MoveUp(&slave1Key)
c.Assert(err, IsNil)
_, err = inst.MasterPosWait(&slave1Key, &master.SelfBinlogCoordinates)
c.Assert(err, IsNil)
slave2, err := inst.ReadTopologyInstance(&slave2Key)
c.Assert(err, IsNil)
_, err = inst.MasterPosWait(&slave2Key, &master.SelfBinlogCoordinates)
c.Assert(err, IsNil)
// Now check for value!
var value1, value2 int
inst.ScanInstanceRow(&slave1Key, `select value from orchestrator_test.test_table where name='TestMoveBelowAndBackComplex'`, &value1)
inst.ScanInstanceRow(&slave2Key, `select value from orchestrator_test.test_table where name='TestMoveBelowAndBackComplex'`, &value2)
c.Assert(inst.InstancesAreSiblings(slave1, slave2), Equals, true)
c.Assert(value1, Equals, randValue)
c.Assert(value2, Equals, randValue)
}
func (s *TestSuite) TestNonSiblings(c *C) {
i0, _ := inst.ReadTopologyInstance(&masterKey)
i1, _ := inst.ReadTopologyInstance(&slave1Key)
c.Assert(inst.InstancesAreSiblings(i0, i1), Not(Equals), true)
}
func (s *TestSuite) TestSlavesAreSiblings(c *C) {
i0, _ := inst.ReadTopologyInstance(&slave1Key)
i1, _ := inst.ReadTopologyInstance(&slave2Key)
c.Assert(inst.InstancesAreSiblings(i0, i1), Equals, true)
}