90 lines
2.8 KiB
Go
90 lines
2.8 KiB
Go
// Copyright 2017 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 statscache_test
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import (
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"testing"
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"github.com/juju/errors"
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb"
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"github.com/pingcap/tidb/domain"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/meta"
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"github.com/pingcap/tidb/model"
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"github.com/pingcap/tidb/plan/statscache"
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"github.com/pingcap/tidb/util/testkit"
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)
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func TestT(t *testing.T) {
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TestingT(t)
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}
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var _ = Suite(&testStatsCacheSuite{})
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type testStatsCacheSuite struct{}
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func (s *testStatsCacheSuite) TestStatsCache(c *C) {
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store, do, err := newStoreWithBootstrap()
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c.Assert(err, IsNil)
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defer store.Close()
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testKit := testkit.NewTestKit(c, store)
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testKit.MustExec("use test")
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testKit.MustExec("create table t (c1 int, c2 int)")
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testKit.MustExec("insert into t values(1, 2)")
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is := do.InfoSchema()
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tbl, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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c.Assert(err, IsNil)
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tableInfo := tbl.Meta()
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statsTbl := statscache.GetStatisticsTableCache(tableInfo)
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c.Assert(statsTbl.Pseudo, IsTrue)
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testKit.MustExec("analyze table t")
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statsTbl = statscache.GetStatisticsTableCache(tableInfo)
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c.Assert(statsTbl.Pseudo, IsFalse)
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testKit.MustExec("create index idx_t on t(c1)")
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is = do.InfoSchema()
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tbl, err = is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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c.Assert(err, IsNil)
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tableInfo = tbl.Meta()
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statsTbl = statscache.GetStatisticsTableCache(tableInfo)
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c.Assert(statsTbl.Pseudo, IsTrue)
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testKit.MustExec("analyze table t")
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statsTbl = statscache.GetStatisticsTableCache(tableInfo)
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c.Assert(statsTbl.Pseudo, IsFalse)
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testKit.MustExec("alter table t drop column c2")
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is = do.InfoSchema()
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tbl, err = is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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c.Assert(err, IsNil)
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tableInfo = tbl.Meta()
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ver, err := store.CurrentVersion()
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c.Assert(err, IsNil)
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snapshot, err := store.GetSnapshot(ver)
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c.Assert(err, IsNil)
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m := meta.NewSnapshotMeta(snapshot)
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do.StatsHandle().Clear()
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do.StatsHandle().Update(m, is)
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statsTbl = statscache.GetStatisticsTableCache(tableInfo)
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c.Assert(statsTbl.Pseudo, IsTrue)
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}
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func newStoreWithBootstrap() (kv.Storage, *domain.Domain, error) {
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store, err := tidb.NewStore(tidb.EngineGoLevelDBMemory)
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if err != nil {
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return nil, nil, errors.Trace(err)
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}
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do, err := tidb.BootstrapSession(store)
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return store, do, errors.Trace(err)
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}
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