116 lines
3.8 KiB
Go
116 lines
3.8 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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// 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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"time"
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/ast"
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"github.com/pingcap/tidb/model"
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"github.com/pingcap/tidb/mysql"
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"github.com/pingcap/tidb/sessionctx/varsutil"
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"github.com/pingcap/tidb/util/mock"
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"github.com/pingcap/tidb/util/testleak"
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"github.com/pingcap/tidb/util/types"
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)
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func (s *testExpressionSuite) TestGetTimeValue(c *C) {
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defer testleak.AfterTest(c)()
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v, err := GetTimeValue(nil, "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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ctx := mock.NewContext()
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sessionVars := ctx.GetSessionVars()
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varsutil.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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varsutil.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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varsutil.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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varsutil.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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{CurrentTimestamp, time.Unix(1234, 0).Format(types.TimeFormat)},
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{ZeroTimestamp, "0000-00-00 00:00:00"},
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{ast.NewValueExpr("2012-12-12 00:00:00"), "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(CurrentTimestamp)}, 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")},
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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) TestIsCurrentTimeExpr(c *C) {
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defer testleak.AfterTest(c)()
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v := IsCurrentTimeExpr(ast.NewValueExpr("abc"))
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c.Assert(v, IsFalse)
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v = IsCurrentTimeExpr(&ast.FuncCallExpr{FnName: model.NewCIStr("CURRENT_TIMESTAMP")})
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c.Assert(v, IsTrue)
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}
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