39 lines
1.1 KiB
Go
39 lines
1.1 KiB
Go
// 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,
|
|
// 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 implementation
|
|
|
|
import (
|
|
"testing"
|
|
|
|
plannercore "github.com/pingcap/tidb/planner/core"
|
|
"github.com/pingcap/tidb/planner/memo"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestBaseImplementation(t *testing.T) {
|
|
|
|
sctx := plannercore.MockContext()
|
|
p := plannercore.PhysicalLimit{}.Init(sctx, nil, 0, nil)
|
|
impl := &baseImpl{plan: p}
|
|
require.Equal(t, p, impl.GetPlan())
|
|
|
|
cost := impl.CalcCost(10, []memo.Implementation{}...)
|
|
require.Equal(t, 0.0, cost)
|
|
require.Equal(t, 0.0, impl.GetCost())
|
|
|
|
impl.SetCost(6.0)
|
|
require.Equal(t, 6.0, impl.GetCost())
|
|
}
|