fix comments

syncer/syncer_test.go

@@ -710,7 +710,7 @@ func (s *testSyncerSuite) TestColumnMapping(c *C) {
 
 	s.resetEventsGenerator(c)
 
-	//create dbConn and tables
+	//create db and tables
 	events := mockBinlogEvents{
 		mockBinlogEvent{typ: DBCreate, args: []interface{}{"stest_3"}},
 		mockBinlogEvent{typ: TableCreate, args: []interface{}{"stest_3", "create table stest_3.log(id varchar(45))"}},
@@ -743,7 +743,7 @@ func (s *testSyncerSuite) TestColumnMapping(c *C) {
 		dmlEvents = append(dmlEvents, dml.events...)
 	}
 
-	// drop tables and dbConn
+	// drop tables and db
 	events = mockBinlogEvents{
 		// TODO event generator support generate an event with multiple tables DDL
 		mockBinlogEvent{typ: TableDrop, args: []interface{}{"stest_3", "log"}},
@@ -1241,12 +1241,12 @@ func (s *testSyncerSuite) TestSharding(c *C) {
 			WillReturnRows(sqlmock.NewRows([]string{"Variable_name", "Value"}).
 				AddRow("sql_mode", "ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"))
 
-		// mock checkpoint dbConn after create dbConn table1 table2
+		// mock checkpoint db after create db table1 table2
 		s.mockCheckPointCreate(checkPointMock)
 		s.mockCheckPointCreate(checkPointMock)
 		s.mockCheckPointCreate(checkPointMock)
 
-		// mock downstream dbConn result
+		// mock downstream db result
 		mock.ExpectBegin()
 		mock.ExpectExec("CREATE DATABASE").WillReturnResult(sqlmock.NewResult(1, 1))
 		mock.ExpectCommit()
@@ -1317,7 +1317,7 @@ func (s *testSyncerSuite) TestSharding(c *C) {
 
 		// check expectations for mock baseConn
 		if err := mock.ExpectationsWereMet(); err != nil {
-			c.Errorf("dbConn unfulfilled expectations: %s", err)
+			c.Errorf("db unfulfilled expectations: %s", err)
 		}
 		if err := fromMock.ExpectationsWereMet(); err != nil {
 			c.Errorf("fromDB unfulfilled expectations: %s", err)
@@ -1558,7 +1558,7 @@ func (s *testSyncerSuite) TestRun(c *C) {
 	c.Assert(syncer.isClosed(), IsTrue)
 
 	if err := mock.ExpectationsWereMet(); err != nil {
-		c.Errorf("dbConn unfulfilled expectations: %s", err)
+		c.Errorf("db unfulfilled expectations: %s", err)
 	}
 
 	if err := checkPointMock.ExpectationsWereMet(); err != nil {