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154 lines
5.8 KiB
154 lines
5.8 KiB
// 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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// 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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"strings"
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"time"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/ast"
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"github.com/pingcap/parser/charset"
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"github.com/pingcap/parser/model"
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"github.com/pingcap/parser/mysql"
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"github.com/pingcap/tidb/sessionctx/variable"
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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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)
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func (s *testExpressionSuite) TestGetTimeValue(c *C) {
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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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c.Assert(err, IsNil)
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c.Assert(v.Kind(), Equals, types.KindMysqlTime)
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timeValue := v.GetMysqlTime()
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c.Assert(timeValue.String(), Equals, "2012-12-12 00:00:00")
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sessionVars := ctx.GetSessionVars()
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variable.SetSessionSystemVar(sessionVars, "timestamp", types.NewStringDatum(""))
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v, err = GetTimeValue(ctx, "2012-12-12 00:00:00", mysql.TypeTimestamp, types.MinFsp)
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c.Assert(err, IsNil)
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c.Assert(v.Kind(), Equals, types.KindMysqlTime)
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timeValue = v.GetMysqlTime()
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c.Assert(timeValue.String(), Equals, "2012-12-12 00:00:00")
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variable.SetSessionSystemVar(sessionVars, "timestamp", types.NewStringDatum("0"))
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v, err = GetTimeValue(ctx, "2012-12-12 00:00:00", mysql.TypeTimestamp, types.MinFsp)
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c.Assert(err, IsNil)
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c.Assert(v.Kind(), Equals, types.KindMysqlTime)
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timeValue = v.GetMysqlTime()
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c.Assert(timeValue.String(), Equals, "2012-12-12 00:00:00")
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variable.SetSessionSystemVar(sessionVars, "timestamp", types.Datum{})
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v, err = GetTimeValue(ctx, "2012-12-12 00:00:00", mysql.TypeTimestamp, types.MinFsp)
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c.Assert(err, IsNil)
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c.Assert(v.Kind(), Equals, types.KindMysqlTime)
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timeValue = v.GetMysqlTime()
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c.Assert(timeValue.String(), Equals, "2012-12-12 00:00:00")
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variable.SetSessionSystemVar(sessionVars, "timestamp", types.NewStringDatum("1234"))
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tbl := []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, t := range tbl {
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comment := Commentf("expr: %d", i)
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v, err := GetTimeValue(ctx, t.Expr, mysql.TypeTimestamp, types.MinFsp)
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c.Assert(err, IsNil)
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switch v.Kind() {
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case types.KindMysqlTime:
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c.Assert(v.GetMysqlTime().String(), DeepEquals, t.Ret, comment)
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default:
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c.Assert(v.GetValue(), DeepEquals, t.Ret, 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 _, t := range errTbl {
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_, err := GetTimeValue(ctx, t.Expr, mysql.TypeTimestamp, types.MinFsp)
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c.Assert(err, NotNil)
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}
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}
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func (s *testExpressionSuite) TestIsCurrentTimestampExpr(c *C) {
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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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c.Assert(v, IsFalse)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(0), nil)
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c.Assert(v, IsTrue)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(3), &types.FieldType{Decimal: 3})
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c.Assert(v, IsTrue)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(1), &types.FieldType{Decimal: 3})
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c.Assert(v, IsFalse)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(0), &types.FieldType{Decimal: 3})
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c.Assert(v, IsFalse)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(2), &types.FieldType{Decimal: 0})
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c.Assert(v, IsFalse)
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v = IsValidCurrentTimestampExpr(buildTimestampFuncCallExpr(2), nil)
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c.Assert(v, IsFalse)
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}
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func (s *testExpressionSuite) TestCurrentTimestampTimeZone(c *C) {
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ctx := mock.NewContext()
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sessionVars := ctx.GetSessionVars()
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variable.SetSessionSystemVar(sessionVars, "timestamp", types.NewStringDatum("1234"))
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variable.SetSessionSystemVar(sessionVars, "time_zone", types.NewStringDatum("+00:00"))
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v, err := GetTimeValue(ctx, ast.CurrentTimestamp, mysql.TypeTimestamp, types.MinFsp)
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c.Assert(err, IsNil)
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c.Assert(v.GetMysqlTime(), DeepEquals, 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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// CurrentTimestamp from "timestamp" session variable is based on UTC, so change timezone
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// would get different value.
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variable.SetSessionSystemVar(sessionVars, "time_zone", types.NewStringDatum("+08:00"))
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v, err = GetTimeValue(ctx, ast.CurrentTimestamp, mysql.TypeTimestamp, types.MinFsp)
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c.Assert(err, IsNil)
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c.Assert(v.GetMysqlTime(), DeepEquals, 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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}
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