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// Copyright 2018 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 implementation
import (
"testing"
. "github.com/pingcap/check"
"github.com/pingcap/parser"
"github.com/pingcap/parser/model"
"github.com/pingcap/tidb/infoschema"
plannercore "github.com/pingcap/tidb/planner/core"
"github.com/pingcap/tidb/planner/memo"
"github.com/pingcap/tidb/sessionctx"
"github.com/pingcap/tidb/util/testleak"
)
func TestT(t *testing.T) {
CustomVerboseFlag = true
TestingT(t)
}
var _ = Suite(&testImplSuite{})
type testImplSuite struct {
*parser.Parser
is infoschema.InfoSchema
sctx sessionctx.Context
}
func (s *testImplSuite) SetUpSuite(c *C) {
testleak.BeforeTest()
s.is = infoschema.MockInfoSchema([]*model.TableInfo{plannercore.MockSignedTable()})
s.sctx = plannercore.MockContext()
s.Parser = parser.New()
}
func (s *testImplSuite) TearDownSuite(c *C) {
testleak.AfterTest(c)()
}
func (s *testImplSuite) TestBaseImplementation(c *C) {
p := plannercore.PhysicalLimit{}.Init(s.sctx, nil, 0, nil)
impl := &baseImpl{plan: p}
c.Assert(impl.GetPlan(), Equals, p)
cost := impl.CalcCost(10, []memo.Implementation{}...)
c.Assert(cost, Equals, 0.0)
c.Assert(impl.GetCost(), Equals, 0.0)
impl.SetCost(6.0)
c.Assert(impl.GetCost(), Equals, 6.0)
}