45 lines
1.4 KiB
Go
45 lines
1.4 KiB
Go
// Copyright 2018 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 implementation
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import (
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"testing"
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"github.com/pingcap/tidb/pkg/domain"
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"github.com/pingcap/tidb/pkg/planner/core/operator/physicalop"
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"github.com/pingcap/tidb/pkg/planner/memo"
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"github.com/pingcap/tidb/pkg/planner/util/coretestsdk"
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"github.com/stretchr/testify/require"
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"go.opencensus.io/stats/view"
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)
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func TestBaseImplementation(t *testing.T) {
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defer view.Stop()
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sctx := coretestsdk.MockContext()
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defer func() {
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domain.GetDomain(sctx).StatsHandle().Close()
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}()
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p := physicalop.PhysicalLimit{}.Init(sctx, nil, 0, nil)
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impl := &baseImpl{plan: p}
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require.Equal(t, p, impl.GetPlan())
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cost := impl.CalcCost(10, []memo.Implementation{}...)
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require.Equal(t, 0.0, cost)
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require.Equal(t, 0.0, impl.GetCost())
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impl.SetCost(6.0)
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require.Equal(t, 6.0, impl.GetCost())
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}
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