71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
// Copyright 2024 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 util_test
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import (
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"testing"
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"github.com/ngaut/pools"
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"github.com/pingcap/tidb/pkg/sessionctx"
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"github.com/pingcap/tidb/pkg/util"
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"github.com/stretchr/testify/require"
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)
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func TestSessionPool(t *testing.T) {
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re := require.New(t)
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f := func() (pools.Resource, error) { return &testResource{}, nil }
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pool := util.NewSessionPool(
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1, f,
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func(r pools.Resource) {
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r.(*testResource).refCount++
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},
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func(r pools.Resource) {
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r.(*testResource).refCount--
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},
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func(r pools.Resource) {
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r.(*testResource).refCount--
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},
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)
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tr, err := pool.Get()
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re.NoError(err)
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re.Equal(1, tr.(*testResource).refCount)
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tr1, err := pool.Get()
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re.NoError(err)
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re.Equal(1, tr1.(*testResource).refCount)
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pool.Put(tr)
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re.Equal(0, tr.(*testResource).refCount)
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// Capacity is 1, so tr1 is closed.
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pool.Put(tr1)
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re.Equal(0, tr1.(*testResource).refCount)
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re.Equal(1, tr1.(*testResource).status)
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pool.Close()
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pool.Close()
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pool.Put(tr1)
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re.Equal(-1, tr1.(*testResource).refCount)
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tr, err = pool.Get()
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re.Error(err)
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re.Equal("session pool closed", err.Error())
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re.Nil(tr)
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}
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type testResource struct {
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sessionctx.Context
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status int
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refCount int
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}
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func (tr *testResource) Close() { tr.status = 1 }
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