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builtin_string_test.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 expression
import (
"fmt"
"strconv"
"strings"
"time"
. "github.com/pingcap/check"
"github.com/pingcap/tidb/ast"
"github.com/pingcap/tidb/mysql"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/terror"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/charset"
"github.com/pingcap/tidb/util/chunk"
"github.com/pingcap/tidb/util/mock"
"github.com/pingcap/tidb/util/testleak"
"github.com/pingcap/tidb/util/testutil"
"github.com/pkg/errors"
)
func (s *testEvaluatorSuite) TestLength(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args interface{}
expected int64
isNil bool
getErr bool
}{
{"abc", 3, false, false},
{"你好", 6, false, false},
{1, 1, false, false},
{3.14, 4, false, false},
{types.NewDecFromFloatForTest(123.123), 7, false, false},
{types.Time{Time: types.FromGoTime(time.Now()), Fsp: 6, Type: mysql.TypeDatetime}, 26, false, false},
{types.NewBinaryLiteralFromUint(0x01, -1), 1, false, false},
{types.Set{Value: 1, Name: "abc"}, 3, false, false},
{types.Duration{Duration: time.Duration(12*time.Hour + 1*time.Minute + 1*time.Second), Fsp: types.DefaultFsp}, 8, false, false},
{nil, 0, true, false},
{errors.New("must error"), 0, false, true},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Length, s.primitiveValsToConstants([]interface{}{t.args})...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetInt64(), Equals, t.expected)
}
}
}
_, err := funcs[ast.Length].getFunction(s.ctx, []Expression{Zero})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestASCII(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args interface{}
expected int64
isNil bool
getErr bool
}{
{"2", 50, false, false},
{2, 50, false, false},
{"23", 50, false, false},
{23, 50, false, false},
{2.3, 50, false, false},
{nil, 0, true, false},
{"", 0, false, false},
{"你好", 228, false, false},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.ASCII, s.primitiveValsToConstants([]interface{}{t.args})...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetInt64(), Equals, t.expected)
}
}
}
_, err := funcs[ast.Length].getFunction(s.ctx, []Expression{Zero})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestConcat(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
retType *types.FieldType
}{
{
[]interface{}{nil},
true, false, "",
&types.FieldType{Tp: mysql.TypeVarString, Flen: 0, Decimal: types.UnspecifiedLength, Charset: charset.CharsetBin, Collate: charset.CollationBin, Flag: mysql.BinaryFlag},
},
{
[]interface{}{"a", "b",
1, 2,
1.1, 1.2,
types.NewDecFromFloatForTest(1.1),
types.Time{
Time: types.FromDate(2000, 1, 1, 12, 01, 01, 0),
Type: mysql.TypeDatetime,
Fsp: types.DefaultFsp},
types.Duration{
Duration: time.Duration(12*time.Hour + 1*time.Minute + 1*time.Second),
Fsp: types.DefaultFsp},
},
false, false, "ab121.11.21.12000-01-01 12:01:0112:01:01",
&types.FieldType{Tp: mysql.TypeVarString, Flen: 40, Decimal: types.UnspecifiedLength, Charset: charset.CharsetBin, Collate: charset.CollationBin, Flag: mysql.BinaryFlag},
},
{
[]interface{}{"a", "b", nil, "c"},
true, false, "",
&types.FieldType{Tp: mysql.TypeVarString, Flen: 3, Decimal: types.UnspecifiedLength, Charset: charset.CharsetBin, Collate: charset.CollationBin, Flag: mysql.BinaryFlag},
},
{
[]interface{}{errors.New("must error")},
false, true, "",
&types.FieldType{Tp: mysql.TypeVarString, Flen: types.UnspecifiedLength, Decimal: types.UnspecifiedLength, Charset: charset.CharsetBin, Collate: charset.CollationBin, Flag: mysql.BinaryFlag},
},
}
fcName := ast.Concat
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, fcName, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
v, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(v.Kind(), Equals, types.KindNull)
} else {
c.Assert(v.GetString(), Equals, t.res)
}
}
}
}
func (s *testEvaluatorSuite) TestConcatWS(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
expected string
}{
{
[]interface{}{nil, nil},
true, false, "",
},
{
[]interface{}{nil, "a", "b"},
true, false, "",
},
{
[]interface{}{",", "a", "b", "hello", `$^%`},
false, false,
`a,b,hello,$^%`,
},
{
[]interface{}{"|", "a", nil, "b", "c"},
false, false,
"a|b|c",
},
{
[]interface{}{",", "a", ",", "b", "c"},
false, false,
"a,,,b,c",
},
{
[]interface{}{errors.New("must error"), "a", "b"},
false, true, "",
},
{
[]interface{}{",", "a", "b", 1, 2, 1.1, 0.11,
types.NewDecFromFloatForTest(1.1),
types.Time{
Time: types.FromDate(2000, 1, 1, 12, 01, 01, 0),
Type: mysql.TypeDatetime,
Fsp: types.DefaultFsp},
types.Duration{
Duration: time.Duration(12*time.Hour + 1*time.Minute + 1*time.Second),
Fsp: types.DefaultFsp},
},
false, false, "a,b,1,2,1.1,0.11,1.1,2000-01-01 12:01:01,12:01:01",
},
}
fcName := ast.ConcatWS
// ERROR 1582 (42000): Incorrect parameter count in the call to native function 'concat_ws'
f, err := newFunctionForTest(s.ctx, fcName, s.primitiveValsToConstants([]interface{}{nil})...)
c.Assert(err, NotNil)
for _, t := range cases {
f, err = newFunctionForTest(s.ctx, fcName, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
val, err1 := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err1, NotNil)
} else {
c.Assert(err1, IsNil)
if t.isNil {
c.Assert(val.Kind(), Equals, types.KindNull)
} else {
c.Assert(val.GetString(), Equals, t.expected)
}
}
}
_, err = funcs[ast.ConcatWS].getFunction(s.ctx, s.primitiveValsToConstants([]interface{}{nil, nil}))
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestLeft(c *C) {
defer testleak.AfterTest(c)()
stmtCtx := s.ctx.GetSessionVars().StmtCtx
origin := stmtCtx.IgnoreTruncate
stmtCtx.IgnoreTruncate = true
defer func() {
stmtCtx.IgnoreTruncate = origin
}()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{"abcde", 3}, false, false, "abc"},
{[]interface{}{"abcde", 0}, false, false, ""},
{[]interface{}{"abcde", 1.2}, false, false, "a"},
{[]interface{}{"abcde", 1.9}, false, false, "ab"},
{[]interface{}{"abcde", -1}, false, false, ""},
{[]interface{}{"abcde", 100}, false, false, "abcde"},
{[]interface{}{"abcde", nil}, true, false, ""},
{[]interface{}{nil, 3}, true, false, ""},
{[]interface{}{"abcde", "3"}, false, false, "abc"},
{[]interface{}{"abcde", "a"}, false, false, ""},
{[]interface{}{1234, 3}, false, false, "123"},
{[]interface{}{12.34, 3}, false, false, "12."},
{[]interface{}{types.NewBinaryLiteralFromUint(0x0102, -1), 1}, false, false, string([]byte{0x01})},
{[]interface{}{errors.New("must err"), 0}, false, true, ""},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Left, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
v, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(v.Kind(), Equals, types.KindNull)
} else {
c.Assert(v.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.Left].getFunction(s.ctx, []Expression{varcharCon, int8Con})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestRight(c *C) {
defer testleak.AfterTest(c)()
stmtCtx := s.ctx.GetSessionVars().StmtCtx
origin := stmtCtx.IgnoreTruncate
stmtCtx.IgnoreTruncate = true
defer func() {
stmtCtx.IgnoreTruncate = origin
}()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{"abcde", 3}, false, false, "cde"},
{[]interface{}{"abcde", 0}, false, false, ""},
{[]interface{}{"abcde", 1.2}, false, false, "e"},
{[]interface{}{"abcde", 1.9}, false, false, "de"},
{[]interface{}{"abcde", -1}, false, false, ""},
{[]interface{}{"abcde", 100}, false, false, "abcde"},
{[]interface{}{"abcde", nil}, true, false, ""},
{[]interface{}{nil, 1}, true, false, ""},
{[]interface{}{"abcde", "3"}, false, false, "cde"},
{[]interface{}{"abcde", "a"}, false, false, ""},
{[]interface{}{1234, 3}, false, false, "234"},
{[]interface{}{12.34, 3}, false, false, ".34"},
{[]interface{}{types.NewBinaryLiteralFromUint(0x0102, -1), 1}, false, false, string([]byte{0x02})},
{[]interface{}{errors.New("must err"), 0}, false, true, ""},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Right, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
v, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(v.Kind(), Equals, types.KindNull)
} else {
c.Assert(v.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.Right].getFunction(s.ctx, []Expression{varcharCon, int8Con})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestRepeat(c *C) {
defer testleak.AfterTest(c)()
args := []interface{}{"a", int64(2)}
fc := funcs[ast.Repeat]
f, err := fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(args...)))
c.Assert(err, IsNil)
v, err := evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(v.GetString(), Equals, "aa")
args = []interface{}{"a", uint64(2)}
f, err = fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(args...)))
c.Assert(err, IsNil)
v, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(v.GetString(), Equals, "aa")
args = []interface{}{"a", uint64(16777217)}
f, err = fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(args...)))
c.Assert(err, IsNil)
v, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(v.IsNull(), IsTrue)
args = []interface{}{"a", uint64(16777216)}
f, err = fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(args...)))
c.Assert(err, IsNil)
v, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(v.IsNull(), IsFalse)
args = []interface{}{"a", int64(-1)}
f, err = fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(args...)))
c.Assert(err, IsNil)
v, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(v.GetString(), Equals, "")
args = []interface{}{"a", int64(0)}
f, err = fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(args...)))
c.Assert(err, IsNil)
v, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(v.GetString(), Equals, "")
args = []interface{}{"a", uint64(0)}
f, err = fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(args...)))
c.Assert(err, IsNil)
v, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(v.GetString(), Equals, "")
}
func (s *testEvaluatorSuite) TestRepeatSig(c *C) {
colTypes := []*types.FieldType{
{Tp: mysql.TypeVarchar},
{Tp: mysql.TypeLonglong},
}
resultType := &types.FieldType{Tp: mysql.TypeVarchar, Flen: 1000}
args := []Expression{
&Column{Index: 0, RetType: colTypes[0]},
&Column{Index: 1, RetType: colTypes[1]},
}
base := baseBuiltinFunc{args: args, ctx: s.ctx, tp: resultType}
repeat := &builtinRepeatSig{base, 1000}
cases := []struct {
args []interface{}
warning int
res string
}{
{[]interface{}{"a", int64(6)}, 0, "aaaaaa"},
{[]interface{}{"a", int64(10001)}, 1, ""},
{[]interface{}{"毅", int64(6)}, 0, "毅毅毅毅毅毅"},
{[]interface{}{"毅", int64(334)}, 2, ""},
}
for _, t := range cases {
input := chunk.NewChunkWithCapacity(colTypes, 10)
input.AppendString(0, t.args[0].(string))
input.AppendInt64(1, t.args[1].(int64))
res, isNull, err := repeat.evalString(input.GetRow(0))
c.Assert(res, Equals, t.res)
c.Assert(err, IsNil)
if t.warning == 0 {
c.Assert(isNull, IsFalse)
} else {
c.Assert(isNull, IsTrue)
c.Assert(err, IsNil)
warnings := s.ctx.GetSessionVars().StmtCtx.GetWarnings()
c.Assert(len(warnings), Equals, t.warning)
lastWarn := warnings[len(warnings)-1]
c.Assert(terror.ErrorEqual(errWarnAllowedPacketOverflowed, lastWarn.Err), IsTrue)
}
}
}
func (s *testEvaluatorSuite) TestLower(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{nil}, true, false, ""},
{[]interface{}{"ab"}, false, false, "ab"},
{[]interface{}{1}, false, false, "1"},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Lower, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
v, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(v.Kind(), Equals, types.KindNull)
} else {
c.Assert(v.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.Lower].getFunction(s.ctx, []Expression{varcharCon})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestUpper(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{nil}, true, false, ""},
{[]interface{}{"ab"}, false, false, "ab"},
{[]interface{}{1}, false, false, "1"},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Upper, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
v, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(v.Kind(), Equals, types.KindNull)
} else {
c.Assert(v.GetString(), Equals, strings.ToUpper(t.res))
}
}
}
_, err := funcs[ast.Upper].getFunction(s.ctx, []Expression{varcharCon})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestReverse(c *C) {
defer testleak.AfterTest(c)()
fc := funcs[ast.Reverse]
f, err := fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(nil)))
c.Assert(err, IsNil)
d, err := evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(d.Kind(), Equals, types.KindNull)
tbl := []struct {
Input interface{}
Expect string
}{
{"abc", "cba"},
{"LIKE", "EKIL"},
{123, "321"},
{"", ""},
}
dtbl := tblToDtbl(tbl)
for _, t := range dtbl {
f, err = fc.getFunction(s.ctx, s.datumsToConstants(t["Input"]))
c.Assert(err, IsNil)
c.Assert(f, NotNil)
d, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(d, testutil.DatumEquals, t["Expect"][0])
}
}
func (s *testEvaluatorSuite) TestStrcmp(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res int64
}{
{[]interface{}{"123", "123"}, false, false, 0},
{[]interface{}{"123", "1"}, false, false, 1},
{[]interface{}{"1", "123"}, false, false, -1},
{[]interface{}{"123", "45"}, false, false, -1},
{[]interface{}{123, "123"}, false, false, 0},
{[]interface{}{"12.34", 12.34}, false, false, 0},
{[]interface{}{nil, "123"}, true, false, 0},
{[]interface{}{"123", nil}, true, false, 0},
{[]interface{}{"", "123"}, false, false, -1},
{[]interface{}{"123", ""}, false, false, 1},
{[]interface{}{"", ""}, false, false, 0},
{[]interface{}{"", nil}, true, false, 0},
{[]interface{}{nil, ""}, true, false, 0},
{[]interface{}{nil, nil}, true, false, 0},
{[]interface{}{"123", errors.New("must err")}, false, true, 0},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Strcmp, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetInt64(), Equals, t.res)
}
}
}
}
func (s *testEvaluatorSuite) TestReplace(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
flen int
}{
{[]interface{}{"www.mysql.com", "mysql", "pingcap"}, false, false, "www.pingcap.com", 17},
{[]interface{}{"www.mysql.com", "w", 1}, false, false, "111.mysql.com", 260},
{[]interface{}{1234, 2, 55}, false, false, "15534", 20},
{[]interface{}{"", "a", "b"}, false, false, "", 0},
{[]interface{}{"abc", "", "d"}, false, false, "abc", 3},
{[]interface{}{"aaa", "a", ""}, false, false, "", 3},
{[]interface{}{nil, "a", "b"}, true, false, "", 0},
{[]interface{}{"a", nil, "b"}, true, false, "", 1},
{[]interface{}{"a", "b", nil}, true, false, "", 1},
{[]interface{}{errors.New("must err"), "a", "b"}, false, true, "", -1},
}
for i, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Replace, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil, Commentf("test %v", i))
c.Assert(f.GetType().Flen, Equals, t.flen, Commentf("test %v", i))
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil, Commentf("test %v", i))
} else {
c.Assert(err, IsNil, Commentf("test %v", i))
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull, Commentf("test %v", i))
} else {
c.Assert(d.GetString(), Equals, t.res, Commentf("test %v", i))
}
}
}
_, err := funcs[ast.Replace].getFunction(s.ctx, []Expression{Zero, Zero, Zero})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestSubstring(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{"Quadratically", 5}, false, false, "ratically"},
{[]interface{}{"Sakila", 1}, false, false, "Sakila"},
{[]interface{}{"Sakila", 2}, false, false, "akila"},
{[]interface{}{"Sakila", -3}, false, false, "ila"},
{[]interface{}{"Sakila", 0}, false, false, ""},
{[]interface{}{"Sakila", 100}, false, false, ""},
{[]interface{}{"Sakila", -100}, false, false, ""},
{[]interface{}{"Quadratically", 5, 6}, false, false, "ratica"},
{[]interface{}{"Sakila", -5, 3}, false, false, "aki"},
{[]interface{}{"Sakila", 2, 0}, false, false, ""},
{[]interface{}{"Sakila", 2, -1}, false, false, ""},
{[]interface{}{"Sakila", 2, 100}, false, false, "akila"},
{[]interface{}{nil, 2, 3}, true, false, ""},
{[]interface{}{"Sakila", nil, 3}, true, false, ""},
{[]interface{}{"Sakila", 2, nil}, true, false, ""},
{[]interface{}{errors.New("must error"), 2, 3}, false, true, ""},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Substring, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.Substring].getFunction(s.ctx, []Expression{Zero, Zero, Zero})
c.Assert(err, IsNil)
_, err = funcs[ast.Substring].getFunction(s.ctx, []Expression{Zero, Zero})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestConvert(c *C) {
defer testleak.AfterTest(c)()
tbl := []struct {
str string
cs string
result string
}{
{"haha", "utf8", "haha"},
{"haha", "ascii", "haha"},
{"haha", "binary", "haha"},
}
for _, v := range tbl {
fc := funcs[ast.Convert]
f, err := fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(v.str, v.cs)))
c.Assert(err, IsNil)
c.Assert(f, NotNil)
r, err := evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(r.Kind(), Equals, types.KindString)
c.Assert(r.GetString(), Equals, v.result)
}
// Test case for error
errTbl := []struct {
str interface{}
cs string
result string
}{
{"haha", "wrongcharset", "haha"},
}
for _, v := range errTbl {
fc := funcs[ast.Convert]
f, err := fc.getFunction(s.ctx, s.datumsToConstants(types.MakeDatums(v.str, v.cs)))
c.Assert(err, IsNil)
c.Assert(f, NotNil)
_, err = evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, NotNil)
}
}
func (s *testEvaluatorSuite) TestSubstringIndex(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{"www.pingcap.com", ".", 2}, false, false, "www.pingcap"},
{[]interface{}{"www.pingcap.com", ".", -2}, false, false, "pingcap.com"},
{[]interface{}{"www.pingcap.com", ".", 0}, false, false, ""},
{[]interface{}{"www.pingcap.com", ".", 100}, false, false, "www.pingcap.com"},
{[]interface{}{"www.pingcap.com", ".", -100}, false, false, "www.pingcap.com"},
{[]interface{}{"www.pingcap.com", "d", 0}, false, false, ""},
{[]interface{}{"www.pingcap.com", "d", 1}, false, false, "www.pingcap.com"},
{[]interface{}{"www.pingcap.com", "d", -1}, false, false, "www.pingcap.com"},
{[]interface{}{"www.pingcap.com", "", 0}, false, false, ""},
{[]interface{}{"www.pingcap.com", "", 1}, false, false, ""},
{[]interface{}{"www.pingcap.com", "", -1}, false, false, ""},
{[]interface{}{"", ".", 0}, false, false, ""},
{[]interface{}{"", ".", 1}, false, false, ""},
{[]interface{}{"", ".", -1}, false, false, ""},
{[]interface{}{nil, ".", 1}, true, false, ""},
{[]interface{}{"www.pingcap.com", nil, 1}, true, false, ""},
{[]interface{}{"www.pingcap.com", ".", nil}, true, false, ""},
{[]interface{}{errors.New("must error"), ".", 1}, false, true, ""},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.SubstringIndex, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.SubstringIndex].getFunction(s.ctx, []Expression{Zero, Zero, Zero})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestSpace(c *C) {
defer testleak.AfterTest(c)()
stmtCtx := s.ctx.GetSessionVars().StmtCtx
origin := stmtCtx.IgnoreTruncate
stmtCtx.IgnoreTruncate = true
defer func() {
stmtCtx.IgnoreTruncate = origin
}()
cases := []struct {
arg interface{}
isNil bool
getErr bool
res string
}{
{0, false, false, ""},
{3, false, false, " "},
{mysql.MaxBlobWidth + 1, true, false, ""},
{-1, false, false, ""},
{"abc", false, false, ""},
{"3", false, false, " "},
{1.2, false, false, " "},
{1.9, false, false, " "},
{nil, true, false, ""},
{errors.New("must error"), false, true, ""},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Space, s.primitiveValsToConstants([]interface{}{t.arg})...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.Space].getFunction(s.ctx, []Expression{Zero})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestSpaceSig(c *C) {
colTypes := []*types.FieldType{
{Tp: mysql.TypeLonglong},
}
resultType := &types.FieldType{Tp: mysql.TypeVarchar, Flen: 1000}
args := []Expression{
&Column{Index: 0, RetType: colTypes[0]},
}
base := baseBuiltinFunc{args: args, ctx: s.ctx, tp: resultType}
space := &builtinSpaceSig{base, 1000}
input := chunk.NewChunkWithCapacity(colTypes, 10)
input.AppendInt64(0, 6)
input.AppendInt64(0, 1001)
res, isNull, err := space.evalString(input.GetRow(0))
c.Assert(res, Equals, " ")
c.Assert(isNull, IsFalse)
c.Assert(err, IsNil)
res, isNull, err = space.evalString(input.GetRow(1))
c.Assert(res, Equals, "")
c.Assert(isNull, IsTrue)
c.Assert(err, IsNil)
warnings := s.ctx.GetSessionVars().StmtCtx.GetWarnings()
c.Assert(len(warnings), Equals, 1)
lastWarn := warnings[len(warnings)-1]
c.Assert(terror.ErrorEqual(errWarnAllowedPacketOverflowed, lastWarn.Err), IsTrue, Commentf("err %v", lastWarn.Err))
}
func (s *testEvaluatorSuite) TestLocate(c *C) {
// 1. Test LOCATE without binary input.
defer testleak.AfterTest(c)()
tbl := []struct {
Args []interface{}
Want interface{}
}{
{[]interface{}{"bar", "foobarbar"}, 4},
{[]interface{}{"xbar", "foobar"}, 0},
{[]interface{}{"", "foobar"}, 1},
{[]interface{}{"foobar", ""}, 0},
{[]interface{}{"", ""}, 1},
{[]interface{}{"好世", "你好世界"}, 2},
{[]interface{}{"界面", "你好世界"}, 0},
{[]interface{}{"b", "中a英b文"}, 4},
{[]interface{}{"BaR", "foobArbar"}, 4},
{[]interface{}{nil, "foobar"}, nil},
{[]interface{}{"bar", nil}, nil},
{[]interface{}{"bar", "foobarbar", 5}, 7},
{[]interface{}{"xbar", "foobar", 1}, 0},
{[]interface{}{"", "foobar", 2}, 2},
{[]interface{}{"foobar", "", 1}, 0},
{[]interface{}{"", "", 2}, 0},
{[]interface{}{"A", "大A写的A", 0}, 0},
{[]interface{}{"A", "大A写的A", 1}, 2},
{[]interface{}{"A", "大A写的A", 2}, 2},
{[]interface{}{"A", "大A写的A", 3}, 5},
{[]interface{}{"bAr", "foobarBaR", 5}, 7},
{[]interface{}{nil, nil}, nil},
{[]interface{}{"", nil}, nil},
{[]interface{}{nil, ""}, nil},
{[]interface{}{nil, nil, 1}, nil},
{[]interface{}{"", nil, 1}, nil},
{[]interface{}{nil, "", 1}, nil},
{[]interface{}{"foo", nil, -1}, nil},
{[]interface{}{nil, "bar", 0}, nil},
}
Dtbl := tblToDtbl(tbl)
instr := funcs[ast.Locate]
for i, t := range Dtbl {
f, err := instr.getFunction(s.ctx, s.datumsToConstants(t["Args"]))
c.Assert(err, IsNil)
got, err := evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(f, NotNil)
c.Assert(got, DeepEquals, t["Want"][0], Commentf("[%d]: args: %v", i, t["Args"]))
}
// 2. Test LOCATE with binary input
tbl2 := []struct {
Args []interface{}
Want interface{}
}{
{[]interface{}{[]byte("BaR"), "foobArbar"}, 0},
{[]interface{}{"BaR", []byte("foobArbar")}, 0},
{[]interface{}{[]byte("bAr"), "foobarBaR", 5}, 0},
{[]interface{}{"bAr", []byte("foobarBaR"), 5}, 0},
{[]interface{}{"bAr", []byte("foobarbAr"), 5}, 7},
}
Dtbl2 := tblToDtbl(tbl2)
for i, t := range Dtbl2 {
exprs := s.datumsToConstants(t["Args"])
types.SetBinChsClnFlag(exprs[0].GetType())
types.SetBinChsClnFlag(exprs[1].GetType())
f, err := instr.getFunction(s.ctx, exprs)
c.Assert(err, IsNil)
got, err := evalBuiltinFunc(f, chunk.Row{})
c.Assert(err, IsNil)
c.Assert(f, NotNil)
c.Assert(got, DeepEquals, t["Want"][0], Commentf("[%d]: args: %v", i, t["Args"]))
}
}
func (s *testEvaluatorSuite) TestTrim(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{" bar "}, false, false, "bar"},
{[]interface{}{"\t bar \n"}, false, false, "\t bar \n"},
{[]interface{}{"\r bar \t"}, false, false, "\r bar \t"},
{[]interface{}{" \tbar\n "}, false, false, "\tbar\n"},
{[]interface{}{""}, false, false, ""},
{[]interface{}{nil}, true, false, ""},
{[]interface{}{"xxxbarxxx", "x"}, false, false, "bar"},
{[]interface{}{"bar", "x"}, false, false, "bar"},
{[]interface{}{" bar ", ""}, false, false, " bar "},
{[]interface{}{"", "x"}, false, false, ""},
{[]interface{}{"bar", nil}, true, false, ""},
{[]interface{}{nil, "x"}, true, false, ""},
{[]interface{}{"xxxbarxxx", "x", int(ast.TrimLeading)}, false, false, "barxxx"},
{[]interface{}{"barxxyz", "xyz", int(ast.TrimTrailing)}, false, false, "barx"},
{[]interface{}{"xxxbarxxx", "x", int(ast.TrimBoth)}, false, false, "bar"},
// FIXME: the result for this test shuold be nil, current is "bar"
{[]interface{}{"bar", nil, int(ast.TrimLeading)}, false, false, "bar"},
{[]interface{}{errors.New("must error")}, false, true, ""},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.Trim, s.primitiveValsToConstants(t.args)...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.Trim].getFunction(s.ctx, []Expression{Zero})
c.Assert(err, IsNil)
_, err = funcs[ast.Trim].getFunction(s.ctx, []Expression{Zero, Zero})
c.Assert(err, IsNil)
_, err = funcs[ast.Trim].getFunction(s.ctx, []Expression{Zero, Zero, Zero})
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestLTrim(c *C) {
defer testleak.AfterTest(c)()
cases := []struct {
arg interface{}
isNil bool
getErr bool
res string
}{
{" bar ", false, false, "bar "},
{"\t bar ", false, false, "\t bar "},
{" \tbar ", false, false, "\tbar "},
{"\t bar ", false, false, "\t bar "},
{" \tbar ", false, false, "\tbar "},
{"\r bar ", false, false, "\r bar "},
{" \rbar ", false, false, "\rbar "},
{"\n bar ", false, false, "\n bar "},
{" \nbar ", false, false, "\nbar "},
{"bar", false, false, "bar"},
{"", false, false, ""},
{nil, true, false, ""},
{errors.New("must error"), false, true, ""},
}
for _, t := range cases {
f, err := newFunctionForTest(s.ctx, ast.LTrim, s.primitiveValsToConstants([]interface{}{t.arg})...)
c.Assert(err, IsNil)
d, err := f.Eval(chunk.Row{})
if t.getErr {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
if t.isNil {
c.Assert(d.Kind(), Equals, types.KindNull)
} else {
c.Assert(d.GetString(), Equals, t.res)
}
}
}
_, err := funcs[ast.LTrim].getFunction(s.ctx, []Expression{Zero})