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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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package expression
import (
"fmt"
"strconv"
"strings"
"testing"
"time"
"github.com/pingcap/errors"
"github.com/pingcap/tidb/errno"
"github.com/pingcap/tidb/parser/ast"
"github.com/pingcap/tidb/parser/charset"
"github.com/pingcap/tidb/parser/mysql"
"github.com/pingcap/tidb/parser/terror"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/testkit/testutil"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/chunk"
"github.com/pingcap/tidb/util/mock"
"github.com/stretchr/testify/require"
)
func TestLengthAndOctetLength(t *testing.T) {
ctx := createContext(t)
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.NewTime(types.FromGoTime(time.Now()), mysql.TypeDatetime, 6), 26, false, false},
{types.NewBinaryLiteralFromUint(0x01, -1), 1, false, false},
{types.Set{Value: 1, Name: "abc"}, 3, false, false},
{types.Duration{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},
}
lengthMethods := []string{ast.Length, ast.OctetLength}
for _, lengthMethod := range lengthMethods {
for _, c := range cases {
f, err := newFunctionForTest(ctx, lengthMethod, primitiveValsToConstants(ctx, []interface{}{c.args})...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, d.Kind())
} else {
require.Equal(t, c.expected, d.GetInt64())
}
}
}
}
_, err := funcs[ast.Length].getFunction(ctx, []Expression{NewZero()})
require.NoError(t, err)
// Test GBK String
tbl := []struct {
input string
chs string
result int64
}{
{"abc", "gbk", 3},
{"一二三", "gbk", 6},
{"一二三", "", 9},
{"一二三!", "gbk", 7},
{"一二三!", "", 10},
}
for _, lengthMethod := range lengthMethods {
for _, c := range tbl {
err := ctx.GetSessionVars().SetSystemVarWithoutValidation(variable.CharacterSetConnection, c.chs)
require.NoError(t, err)
f, err := newFunctionForTest(ctx, lengthMethod, primitiveValsToConstants(ctx, []interface{}{c.input})...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
require.NoError(t, err)
require.Equal(t, c.result, d.GetInt64())
}
}
}
func TestASCII(t *testing.T) {
ctx := createContext(t)
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 _, c := range cases {
f, err := newFunctionForTest(ctx, ast.ASCII, primitiveValsToConstants(ctx, []interface{}{c.args})...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, d.Kind())
} else {
require.Equal(t, c.expected, d.GetInt64())
}
}
}
_, err := funcs[ast.Length].getFunction(ctx, []Expression{NewZero()})
require.NoError(t, err)
// Test GBK String
tbl := []struct {
input string
chs string
result int64
}{
{"abc", "gbk", 97},
{"你好", "gbk", 196},
{"你好", "", 228},
{"世界", "gbk", 202},
{"世界", "", 228},
}
for _, c := range tbl {
err := ctx.GetSessionVars().SetSystemVarWithoutValidation(variable.CharacterSetConnection, c.chs)
require.NoError(t, err)
f, err := newFunctionForTest(ctx, ast.ASCII, primitiveValsToConstants(ctx, []interface{}{c.input})...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
require.NoError(t, err)
require.Equal(t, c.result, d.GetInt64())
}
}
func TestConcat(t *testing.T) {
ctx := createContext(t)
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
retType *types.FieldType
}{
{
[]interface{}{nil},
true, false, "",
types.NewFieldTypeBuilder().SetType(mysql.TypeVarString).SetFlag(mysql.BinaryFlag).SetDecimal(types.UnspecifiedLength).SetCharset(charset.CharsetBin).SetCollate(charset.CollationBin).BuildP(),
},
{
[]interface{}{"a", "b",
1, 2,
1.1, 1.2,
types.NewDecFromFloatForTest(1.1),
types.NewTime(types.FromDate(2000, 1, 1, 12, 01, 01, 0), mysql.TypeDatetime, types.DefaultFsp),
types.Duration{
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.NewFieldTypeBuilder().SetType(mysql.TypeVarString).SetFlag(mysql.BinaryFlag).SetFlen(40).SetDecimal(types.UnspecifiedLength).SetCharset(charset.CharsetBin).SetCollate(charset.CollationBin).BuildP(),
},
{
[]interface{}{"a", "b", nil, "c"},
true, false, "",
types.NewFieldTypeBuilder().SetType(mysql.TypeVarString).SetFlag(mysql.BinaryFlag).SetFlen(3).SetDecimal(types.UnspecifiedLength).SetCharset(charset.CharsetBin).SetCollate(charset.CollationBin).BuildP(),
},
{
[]interface{}{errors.New("must error")},
false, true, "",
types.NewFieldTypeBuilder().SetType(mysql.TypeVarString).SetFlag(mysql.BinaryFlag).SetFlen(types.UnspecifiedLength).SetDecimal(types.UnspecifiedLength).SetCharset(charset.CharsetBin).SetCollate(charset.CollationBin).BuildP(),
},
}
fcName := ast.Concat
for _, c := range cases {
f, err := newFunctionForTest(ctx, fcName, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
v, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, v.Kind())
} else {
require.Equal(t, c.res, v.GetString())
}
}
}
}
func TestConcatSig(t *testing.T) {
ctx := createContext(t)
colTypes := []*types.FieldType{
types.NewFieldType(mysql.TypeVarchar),
types.NewFieldType(mysql.TypeVarchar),
}
resultType := &types.FieldType{}
resultType.SetType(mysql.TypeVarchar)
resultType.SetFlen(1000)
args := []Expression{
&Column{Index: 0, RetType: colTypes[0]},
&Column{Index: 1, RetType: colTypes[1]},
}
base := baseBuiltinFunc{args: args, ctx: ctx, tp: resultType}
concat := &builtinConcatSig{base, 5}
cases := []struct {
args []interface{}
warnings int
res string
}{
{[]interface{}{"a", "b"}, 0, "ab"},
{[]interface{}{"aaa", "bbb"}, 1, ""},
{[]interface{}{"中", "a"}, 0, "中a"},
{[]interface{}{"中文", "a"}, 2, ""},
}
for _, c := range cases {
input := chunk.NewChunkWithCapacity(colTypes, 10)
input.AppendString(0, c.args[0].(string))
input.AppendString(1, c.args[1].(string))
res, isNull, err := concat.evalString(input.GetRow(0))
require.Equal(t, c.res, res)
require.NoError(t, err)
if c.warnings == 0 {
require.False(t, isNull)
} else {
require.True(t, isNull)
warnings := ctx.GetSessionVars().StmtCtx.GetWarnings()
require.Len(t, warnings, c.warnings)
lastWarn := warnings[len(warnings)-1]
require.True(t, terror.ErrorEqual(errWarnAllowedPacketOverflowed, lastWarn.Err))
}
}
}
func TestConcatWS(t *testing.T) {
ctx := createContext(t)
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.NewTime(types.FromDate(2000, 1, 1, 12, 01, 01, 0), mysql.TypeDatetime, types.DefaultFsp),
types.Duration{
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'
_, err := newFunctionForTest(ctx, fcName, primitiveValsToConstants(ctx, []interface{}{nil})...)
require.Error(t, err)
for _, c := range cases {
f, err := newFunctionForTest(ctx, fcName, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
val, err1 := f.Eval(chunk.Row{})
if c.getErr {
require.NotNil(t, err1)
} else {
require.Nil(t, err1)
if c.isNil {
require.Equal(t, types.KindNull, val.Kind())
} else {
require.Equal(t, c.expected, val.GetString())
}
}
}
_, err = funcs[ast.ConcatWS].getFunction(ctx, primitiveValsToConstants(ctx, []interface{}{nil, nil}))
require.NoError(t, err)
}
func TestConcatWSSig(t *testing.T) {
ctx := createContext(t)
colTypes := []*types.FieldType{
types.NewFieldType(mysql.TypeVarchar),
types.NewFieldType(mysql.TypeVarchar),
types.NewFieldType(mysql.TypeVarchar),
}
resultType := &types.FieldType{}
resultType.SetType(mysql.TypeVarchar)
resultType.SetFlen(1000)
args := []Expression{
&Column{Index: 0, RetType: colTypes[0]},
&Column{Index: 1, RetType: colTypes[1]},
&Column{Index: 2, RetType: colTypes[2]},
}
base := baseBuiltinFunc{args: args, ctx: ctx, tp: resultType}
concat := &builtinConcatWSSig{base, 6}
cases := []struct {
args []interface{}
warnings int
res string
}{
{[]interface{}{",", "a", "b"}, 0, "a,b"},
{[]interface{}{",", "aaa", "bbb"}, 1, ""},
{[]interface{}{",", "中", "a"}, 0, "中,a"},
{[]interface{}{",", "中文", "a"}, 2, ""},
}
for _, c := range cases {
input := chunk.NewChunkWithCapacity(colTypes, 10)
input.AppendString(0, c.args[0].(string))
input.AppendString(1, c.args[1].(string))
input.AppendString(2, c.args[2].(string))
res, isNull, err := concat.evalString(input.GetRow(0))
require.Equal(t, c.res, res)
require.NoError(t, err)
if c.warnings == 0 {
require.False(t, isNull)
} else {
require.True(t, isNull)
warnings := ctx.GetSessionVars().StmtCtx.GetWarnings()
require.Len(t, warnings, c.warnings)
lastWarn := warnings[len(warnings)-1]
require.True(t, terror.ErrorEqual(errWarnAllowedPacketOverflowed, lastWarn.Err))
}
}
}
func TestLeft(t *testing.T) {
ctx := createContext(t)
stmtCtx := ctx.GetSessionVars().StmtCtx
origin := stmtCtx.IgnoreTruncate.Load()
stmtCtx.IgnoreTruncate.Store(true)
defer func() {
stmtCtx.IgnoreTruncate.Store(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 _, c := range cases {
f, err := newFunctionForTest(ctx, ast.Left, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
v, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, v.Kind())
} else {
require.Equal(t, c.res, v.GetString())
}
}
}
_, err := funcs[ast.Left].getFunction(ctx, []Expression{getVarcharCon(), getInt8Con()})
require.NoError(t, err)
}
func TestRight(t *testing.T) {
ctx := createContext(t)
stmtCtx := ctx.GetSessionVars().StmtCtx
origin := stmtCtx.IgnoreTruncate.Load()
stmtCtx.IgnoreTruncate.Store(true)
defer func() {
stmtCtx.IgnoreTruncate.Store(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 _, c := range cases {
f, err := newFunctionForTest(ctx, ast.Right, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
v, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, v.Kind())
} else {
require.Equal(t, c.res, v.GetString())
}
}
}
_, err := funcs[ast.Right].getFunction(ctx, []Expression{getVarcharCon(), getInt8Con()})
require.NoError(t, err)
}
func TestRepeat(t *testing.T) {
ctx := createContext(t)
args := []interface{}{"a", int64(2)}
fc := funcs[ast.Repeat]
f, err := fc.getFunction(ctx, datumsToConstants(types.MakeDatums(args...)))
require.NoError(t, err)
v, err := evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.Equal(t, "aa", v.GetString())
args = []interface{}{"a", uint64(2)}
f, err = fc.getFunction(ctx, datumsToConstants(types.MakeDatums(args...)))
require.NoError(t, err)
v, err = evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.Equal(t, "aa", v.GetString())
args = []interface{}{"a", uint64(16777217)}
f, err = fc.getFunction(ctx, datumsToConstants(types.MakeDatums(args...)))
require.NoError(t, err)
v, err = evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.False(t, v.IsNull())
args = []interface{}{"a", uint64(16777216)}
f, err = fc.getFunction(ctx, datumsToConstants(types.MakeDatums(args...)))
require.NoError(t, err)
v, err = evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.False(t, v.IsNull())
args = []interface{}{"a", int64(-1)}
f, err = fc.getFunction(ctx, datumsToConstants(types.MakeDatums(args...)))
require.NoError(t, err)
v, err = evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.Equal(t, "", v.GetString())
args = []interface{}{"a", int64(0)}
f, err = fc.getFunction(ctx, datumsToConstants(types.MakeDatums(args...)))
require.NoError(t, err)
v, err = evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.Equal(t, "", v.GetString())
args = []interface{}{"a", uint64(0)}
f, err = fc.getFunction(ctx, datumsToConstants(types.MakeDatums(args...)))
require.NoError(t, err)
v, err = evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.Equal(t, "", v.GetString())
}
func TestRepeatSig(t *testing.T) {
ctx := createContext(t)
colTypes := []*types.FieldType{
types.NewFieldType(mysql.TypeVarchar),
types.NewFieldType(mysql.TypeLonglong),
}
resultType := &types.FieldType{}
resultType.SetType(mysql.TypeVarchar)
resultType.SetFlen(1000)
args := []Expression{
&Column{Index: 0, RetType: colTypes[0]},
&Column{Index: 1, RetType: colTypes[1]},
}
base := baseBuiltinFunc{args: args, ctx: 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 _, c := range cases {
input := chunk.NewChunkWithCapacity(colTypes, 10)
input.AppendString(0, c.args[0].(string))
input.AppendInt64(1, c.args[1].(int64))
res, isNull, err := repeat.evalString(input.GetRow(0))
require.Equal(t, c.res, res)
require.NoError(t, err)
if c.warning == 0 {
require.False(t, isNull)
} else {
require.True(t, isNull)
require.NoError(t, err)
warnings := ctx.GetSessionVars().StmtCtx.GetWarnings()
require.Len(t, warnings, c.warning)
lastWarn := warnings[len(warnings)-1]
require.True(t, terror.ErrorEqual(errWarnAllowedPacketOverflowed, lastWarn.Err))
}
}
}
func TestLower(t *testing.T) {
ctx := createContext(t)
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{nil}, true, false, ""},
{[]interface{}{"ab"}, false, false, "ab"},
{[]interface{}{1}, false, false, "1"},
{[]interface{}{"one week’s time TEST"}, false, false, "one week’s time test"},
{[]interface{}{"one week's time TEST"}, false, false, "one week's time test"},
{[]interface{}{"ABC测试DEF"}, false, false, "abc测试def"},
{[]interface{}{"ABCテストDEF"}, false, false, "abcテストdef"},
}
for _, c := range cases {
f, err := newFunctionForTest(ctx, ast.Lower, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
v, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, v.Kind())
} else {
require.Equal(t, c.res, v.GetString())
}
}
}
_, err := funcs[ast.Lower].getFunction(ctx, []Expression{getVarcharCon()})
require.NoError(t, err)
// Test GBK String
tbl := []struct {
input string
chs string
result string
}{
{"ABC", "gbk", "abc"},
{"一二三", "gbk", "一二三"},
{"àáèéêìíòóùúüāēěīńňōūǎǐǒǔǖǘǚǜⅪⅫ", "gbk", "àáèéêìíòóùúüāēěīńňōūǎǐǒǔǖǘǚǜⅪⅫ"},
{"àáèéêìíòóùúüāēěīńňōūǎǐǒǔǖǘǚǜⅪⅫ", "", "àáèéêìíòóùúüāēěīńňōūǎǐǒǔǖǘǚǜⅺⅻ"},
}
for _, c := range tbl {
err := ctx.GetSessionVars().SetSystemVarWithoutValidation(variable.CharacterSetConnection, c.chs)
require.NoError(t, err)
f, err := newFunctionForTest(ctx, ast.Lower, primitiveValsToConstants(ctx, []interface{}{c.input})...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
require.NoError(t, err)
require.Equal(t, c.result, d.GetString())
}
}
func TestUpper(t *testing.T) {
ctx := createContext(t)
cases := []struct {
args []interface{}
isNil bool
getErr bool
res string
}{
{[]interface{}{nil}, true, false, ""},
{[]interface{}{"ab"}, false, false, "ab"},
{[]interface{}{1}, false, false, "1"},
{[]interface{}{"one week’s time TEST"}, false, false, "ONE WEEK’S TIME TEST"},
{[]interface{}{"one week's time TEST"}, false, false, "ONE WEEK'S TIME TEST"},
{[]interface{}{"abc测试def"}, false, false, "ABC测试DEF"},
{[]interface{}{"abcテストdef"}, false, false, "ABCテストDEF"},
}
for _, c := range cases {
f, err := newFunctionForTest(ctx, ast.Upper, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
v, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, v.Kind())
} else {
require.Equal(t, strings.ToUpper(c.res), v.GetString())
}
}
}
_, err := funcs[ast.Upper].getFunction(ctx, []Expression{getVarcharCon()})
require.NoError(t, err)
// Test GBK String
tbl := []struct {
input string
chs string
result string
}{
{"abc", "gbk", "ABC"},
{"一二三", "gbk", "一二三"},
{"àbc", "gbk", "àBC"},
{"àáèéêìíòóùúüāēěīńňōūǎǐǒǔǖǘǚǜⅪⅫ", "gbk", "àáèéêìíòóùúüāēěīńňōūǎǐǒǔǖǘǚǜⅪⅫ"},
{"àáèéêìíòóùúüāēěīńňōūǎǐǒǔǖǘǚǜⅪⅫ", "", "ÀÁÈÉÊÌÍÒÓÙÚÜĀĒĚĪŃŇŌŪǍǏǑǓǕǗǙǛⅪⅫ"},
}
for _, c := range tbl {
err := ctx.GetSessionVars().SetSystemVarWithoutValidation(variable.CharacterSetConnection, c.chs)
require.NoError(t, err)
f, err := newFunctionForTest(ctx, ast.Upper, primitiveValsToConstants(ctx, []interface{}{c.input})...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
require.NoError(t, err)
require.Equal(t, c.result, d.GetString())
}
}
func TestReverse(t *testing.T) {
ctx := createContext(t)
fc := funcs[ast.Reverse]
f, err := fc.getFunction(ctx, datumsToConstants(types.MakeDatums(nil)))
require.NoError(t, err)
d, err := evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.Equal(t, types.KindNull, d.Kind())
tbl := []struct {
Input interface{}
Expect string
}{
{"abc", "cba"},
{"LIKE", "EKIL"},
{123, "321"},
{"", ""},
}
dtbl := tblToDtbl(tbl)
for _, c := range dtbl {
f, err = fc.getFunction(ctx, datumsToConstants(c["Input"]))
require.NoError(t, err)
require.NotNil(t, f)
d, err = evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
testutil.DatumEqual(t, c["Expect"][0], d)
}
}
func TestStrcmp(t *testing.T) {
ctx := createContext(t)
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 _, c := range cases {
f, err := newFunctionForTest(ctx, ast.Strcmp, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, d.Kind())
} else {
require.Equal(t, c.res, d.GetInt64())
}
}
}
}
func TestReplace(t *testing.T) {
ctx := createContext(t)
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, c := range cases {
f, err := newFunctionForTest(ctx, ast.Replace, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
require.Equalf(t, c.flen, f.GetType().GetFlen(), "test %v", i)
d, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equalf(t, types.KindNull, d.Kind(), "test %v", i)
} else {
require.Equalf(t, c.res, d.GetString(), "test %v", i)
}
}
}
_, err := funcs[ast.Replace].getFunction(ctx, []Expression{NewZero(), NewZero(), NewZero()})
require.NoError(t, err)
}
func TestSubstring(t *testing.T) {
ctx := createContext(t)
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 _, c := range cases {
f, err := newFunctionForTest(ctx, ast.Substring, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, d.Kind())
} else {
require.Equal(t, c.res, d.GetString())
}
}
}
_, err := funcs[ast.Substring].getFunction(ctx, []Expression{NewZero(), NewZero(), NewZero()})
require.NoError(t, err)
_, err = funcs[ast.Substring].getFunction(ctx, []Expression{NewZero(), NewZero()})
require.NoError(t, err)
}
func TestConvert(t *testing.T) {
ctx := createContext(t)
tbl := []struct {
str interface{}
cs string
result string
hasBinaryFlag bool
}{
{"haha", "utf8", "haha", false},
{"haha", "ascii", "haha", false},
{"haha", "binary", "haha", true},
{"haha", "bInAry", "haha", true},
{types.NewBinaryLiteralFromUint(0x7e, -1), "BiNarY", "~", true},
{types.NewBinaryLiteralFromUint(0xe4b8ade696870a, -1), "uTf8", "中文\n", false},
}
for _, v := range tbl {
fc := funcs[ast.Convert]
f, err := fc.getFunction(ctx, datumsToConstants(types.MakeDatums(v.str, v.cs)))
require.NoError(t, err)
require.NotNil(t, f)
retType := f.getRetTp()
require.Equal(t, strings.ToLower(v.cs), retType.GetCharset())
collate, err := charset.GetDefaultCollation(strings.ToLower(v.cs))
require.NoError(t, err)
require.Equal(t, collate, retType.GetCollate())
require.Equal(t, v.hasBinaryFlag, mysql.HasBinaryFlag(retType.GetFlag()))
r, err := evalBuiltinFunc(f, chunk.Row{})
require.NoError(t, err)
require.Equal(t, types.KindString, r.Kind())
require.Equal(t, v.result, r.GetString())
}
// Test case for getFunction() error
errTbl := []struct {
str interface{}
cs string
err string
}{
{"haha", "wrongcharset", "[expression:1115]Unknown character set: 'wrongcharset'"},
{"haha", "cp866", "[expression:1115]Unknown character set: 'cp866'"},
}
for _, v := range errTbl {
fc := funcs[ast.Convert]
f, err := fc.getFunction(ctx, datumsToConstants(types.MakeDatums(v.str, v.cs)))
require.Equal(t, v.err, err.Error())
require.Nil(t, f)
}
// Test wrong charset while evaluating.
fc := funcs[ast.Convert]
f, err := fc.getFunction(ctx, datumsToConstants(types.MakeDatums("haha", "utf8")))
require.NoError(t, err)
require.NotNil(t, f)
wrongFunction := f.(*builtinConvertSig)
wrongFunction.tp.SetCharset("wrongcharset")
_, err = evalBuiltinFunc(wrongFunction, chunk.Row{})
require.Error(t, err)
require.Equal(t, "[expression:1115]Unknown character set: 'wrongcharset'", err.Error())
}
func TestSubstringIndex(t *testing.T) {
ctx := createContext(t)
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 _, c := range cases {
f, err := newFunctionForTest(ctx, ast.SubstringIndex, primitiveValsToConstants(ctx, c.args)...)
require.NoError(t, err)
d, err := f.Eval(chunk.Row{})
if c.getErr {
require.Error(t, err)
} else {
require.NoError(t, err)
if c.isNil {
require.Equal(t, types.KindNull, d.Kind())
} else {
require.Equal(t, c.res, d.GetString())
}
}
}
_, err := funcs[ast.SubstringIndex].getFunction(ctx, []Expression{NewZero(), NewZero(), NewZero()})
require.NoError(t, err)
}
func TestSpace(t *testing.T) {
ctx := createContext(t)
stmtCtx := ctx.GetSessionVars().StmtCtx
origin := stmtCtx.IgnoreTruncate.Load()
stmtCtx.IgnoreTruncate.Store(true)
defer func() {
stmtCtx.IgnoreTruncate.Store(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, " "},