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testkit.go
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testkit.go
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// Copyright 2015 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package testkit
import (
"fmt"
"sync/atomic"
"github.com/juju/errors"
"github.com/pingcap/check"
"github.com/pingcap/tidb"
"github.com/pingcap/tidb/ast"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/util/testutil"
)
// TestKit is a utility to run sql test.
type TestKit struct {
c *check.C
store kv.Storage
Se tidb.Session
}
// Result is the result returned by MustQuery.
type Result struct {
rows [][]interface{}
comment check.CommentInterface
c *check.C
}
// Check asserts the result equals the expected results.
func (res *Result) Check(expected [][]interface{}) {
got := fmt.Sprintf("%v", res.rows)
need := fmt.Sprintf("%v", expected)
res.c.Assert(got, check.Equals, need, res.comment)
}
// Rows returns the result data.
func (res *Result) Rows() [][]interface{} {
return res.rows
}
// NewTestKit returns a new *TestKit.
func NewTestKit(c *check.C, store kv.Storage) *TestKit {
return &TestKit{
c: c,
store: store,
}
}
var connectionID uint64
// Exec executes a sql statement.
func (tk *TestKit) Exec(sql string, args ...interface{}) (ast.RecordSet, error) {
var err error
if tk.Se == nil {
tk.Se, err = tidb.CreateSession(tk.store)
tk.c.Assert(err, check.IsNil)
id := atomic.AddUint64(&connectionID, 1)
tk.Se.SetConnectionID(id)
}
if len(args) == 0 {
var rss []ast.RecordSet
rss, err = tk.Se.Execute(sql)
if err == nil && len(rss) > 0 {
return rss[0], nil
}
return nil, errors.Trace(err)
}
stmtID, _, _, err := tk.Se.PrepareStmt(sql)
if err != nil {
return nil, errors.Trace(err)
}
rs, err := tk.Se.ExecutePreparedStmt(stmtID, args...)
if err != nil {
return nil, errors.Trace(err)
}
err = tk.Se.DropPreparedStmt(stmtID)
if err != nil {
return nil, errors.Trace(err)
}
return rs, nil
}
// CheckExecResult checks the affected rows and the insert id after executing MustExec.
func (tk *TestKit) CheckExecResult(affectedRows, insertID int64) {
tk.c.Assert(affectedRows, check.Equals, int64(tk.Se.AffectedRows()))
tk.c.Assert(insertID, check.Equals, int64(tk.Se.LastInsertID()))
}
// MustExec executes a sql statement and asserts nil error.
func (tk *TestKit) MustExec(sql string, args ...interface{}) {
_, err := tk.Exec(sql, args...)
tk.c.Assert(err, check.IsNil, check.Commentf("sql:%s, %v", sql, args))
}
// MustQuery query the statements and returns result rows.
// If expected result is set it asserts the query result equals expected result.
func (tk *TestKit) MustQuery(sql string, args ...interface{}) *Result {
comment := check.Commentf("sql:%s, %v", sql, args)
rs, err := tk.Exec(sql, args...)
tk.c.Assert(errors.ErrorStack(err), check.Equals, "", comment)
tk.c.Assert(rs, check.NotNil, comment)
rows, err := tidb.GetRows(rs)
tk.c.Assert(errors.ErrorStack(err), check.Equals, "", comment)
iRows := make([][]interface{}, len(rows))
for i := range rows {
row := rows[i]
iRow := make([]interface{}, len(row))
for j := range row {
iRow[j] = row[j].GetValue()
}
iRows[i] = iRow
}
return &Result{rows: iRows, c: tk.c, comment: comment}
}
// Rows is similar to RowsWithSep, use white space as separator string.
func Rows(args ...string) [][]interface{} {
return testutil.RowsWithSep(" ", args...)
}