184 lines
6.2 KiB
Go
184 lines
6.2 KiB
Go
// Copyright 2016 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package expression
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import (
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"fmt"
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"strings"
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"testing"
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"time"
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"github.com/pingcap/tidb/parser/ast"
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"github.com/pingcap/tidb/parser/charset"
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"github.com/pingcap/tidb/parser/model"
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"github.com/pingcap/tidb/parser/mysql"
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"github.com/pingcap/tidb/types"
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driver "github.com/pingcap/tidb/types/parser_driver"
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"github.com/pingcap/tidb/util/mock"
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"github.com/stretchr/testify/require"
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)
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func TestGetTimeValue(t *testing.T) {
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ctx := mock.NewContext()
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v, err := GetTimeValue(ctx, "2012-12-12 00:00:00", mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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require.Equal(t, types.KindMysqlTime, v.Kind())
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timeValue := v.GetMysqlTime()
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require.Equal(t, "2012-12-12 00:00:00", timeValue.String())
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sessionVars := ctx.GetSessionVars()
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err = sessionVars.SetSystemVar("timestamp", "0")
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require.NoError(t, err)
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v, err = GetTimeValue(ctx, "2012-12-12 00:00:00", mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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require.Equal(t, types.KindMysqlTime, v.Kind())
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timeValue = v.GetMysqlTime()
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require.Equal(t, "2012-12-12 00:00:00", timeValue.String())
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err = sessionVars.SetSystemVar("timestamp", "0")
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require.NoError(t, err)
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v, err = GetTimeValue(ctx, "2012-12-12 00:00:00", mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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require.Equal(t, types.KindMysqlTime, v.Kind())
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timeValue = v.GetMysqlTime()
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require.Equal(t, "2012-12-12 00:00:00", timeValue.String())
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err = sessionVars.SetSystemVar("timestamp", "")
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require.Error(t, err, "Incorrect argument type to variable 'timestamp'")
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v, err = GetTimeValue(ctx, "2012-12-12 00:00:00", mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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require.Equal(t, types.KindMysqlTime, v.Kind())
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timeValue = v.GetMysqlTime()
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require.Equal(t, "2012-12-12 00:00:00", timeValue.String())
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// trigger the stmt context cache.
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err = sessionVars.SetSystemVar("timestamp", "0")
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require.NoError(t, err)
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v1, err := GetTimeCurrentTimestamp(ctx, mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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v2, err := GetTimeCurrentTimestamp(ctx, mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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require.Equal(t, v1, v2)
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err = sessionVars.SetSystemVar("timestamp", "1234")
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require.NoError(t, err)
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tbls := []struct {
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Expr interface{}
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Ret interface{}
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}{
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{"2012-12-12 00:00:00", "2012-12-12 00:00:00"},
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{ast.CurrentTimestamp, time.Unix(1234, 0).Format(types.TimeFormat)},
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{types.ZeroDatetimeStr, "0000-00-00 00:00:00"},
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{ast.NewValueExpr("2012-12-12 00:00:00", charset.CharsetUTF8MB4, charset.CollationUTF8MB4), "2012-12-12 00:00:00"},
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{ast.NewValueExpr(int64(0), "", ""), "0000-00-00 00:00:00"},
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{ast.NewValueExpr(nil, "", ""), nil},
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{&ast.FuncCallExpr{FnName: model.NewCIStr(ast.CurrentTimestamp)}, strings.ToUpper(ast.CurrentTimestamp)},
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// {&ast.UnaryOperationExpr{Op: opcode.Minus, V: ast.NewValueExpr(int64(0))}, "0000-00-00 00:00:00"},
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}
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for i, tbl := range tbls {
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comment := fmt.Sprintf("expr: %d", i)
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v, err := GetTimeValue(ctx, tbl.Expr, mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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switch v.Kind() {
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case types.KindMysqlTime:
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require.EqualValues(t, tbl.Ret, v.GetMysqlTime().String(), comment)
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default:
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require.EqualValues(t, tbl.Ret, v.GetValue(), comment)
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}
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}
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errTbl := []struct {
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Expr interface{}
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}{
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{"2012-13-12 00:00:00"},
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{ast.NewValueExpr("2012-13-12 00:00:00", charset.CharsetUTF8MB4, charset.CollationUTF8MB4)},
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{ast.NewValueExpr(int64(1), "", "")},
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{&ast.FuncCallExpr{FnName: model.NewCIStr("xxx")}},
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// {&ast.UnaryOperationExpr{Op: opcode.Minus, V: ast.NewValueExpr(int64(1))}},
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}
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for _, tbl := range errTbl {
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_, err := GetTimeValue(ctx, tbl.Expr, mysql.TypeTimestamp, types.MinFsp)
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require.Error(t, err)
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}
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}
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func TestIsCurrentTimestampExpr(t *testing.T) {
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buildTimestampFuncCallExpr := func(i int64) *ast.FuncCallExpr {
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var args []ast.ExprNode
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if i != 0 {
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args = []ast.ExprNode{&driver.ValueExpr{Datum: types.NewIntDatum(i)}}
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}
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return &ast.FuncCallExpr{FnName: model.NewCIStr("CURRENT_TIMESTAMP"), Args: args}
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}
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v := IsValidCurrentTimestampExpr(ast.NewValueExpr("abc", charset.CharsetUTF8MB4, charset.CollationUTF8MB4), nil)
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require.False(t, v)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(0), nil)
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require.True(t, v)
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ft := &types.FieldType{}
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ft.SetDecimal(3)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(3), ft)
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require.True(t, v)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(1), ft)
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require.False(t, v)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(0), ft)
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require.False(t, v)
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ft1 := &types.FieldType{}
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ft1.SetDecimal(0)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(2), ft1)
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require.False(t, v)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(2), nil)
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require.False(t, v)
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}
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func TestCurrentTimestampTimeZone(t *testing.T) {
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ctx := mock.NewContext()
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sessionVars := ctx.GetSessionVars()
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err := sessionVars.SetSystemVar("timestamp", "1234")
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require.NoError(t, err)
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err = sessionVars.SetSystemVar("time_zone", "+00:00")
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require.NoError(t, err)
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v, err := GetTimeValue(ctx, ast.CurrentTimestamp, mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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require.EqualValues(t, types.NewTime(
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types.FromDate(1970, 1, 1, 0, 20, 34, 0),
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mysql.TypeTimestamp, types.DefaultFsp),
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v.GetMysqlTime())
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// CurrentTimestamp from "timestamp" session variable is based on UTC, so change timezone
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// would get different value.
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err = sessionVars.SetSystemVar("time_zone", "+08:00")
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require.NoError(t, err)
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v, err = GetTimeValue(ctx, ast.CurrentTimestamp, mysql.TypeTimestamp, types.MinFsp)
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require.NoError(t, err)
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require.EqualValues(t, types.NewTime(
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types.FromDate(1970, 1, 1, 8, 20, 34, 0),
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mysql.TypeTimestamp, types.DefaultFsp),
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v.GetMysqlTime())
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}
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