99 lines
2.7 KiB
Go
99 lines
2.7 KiB
Go
// Copyright 2019 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 domain
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import (
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"time"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/ast"
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"github.com/pingcap/parser/charset"
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"github.com/pingcap/parser/model"
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"github.com/pingcap/parser/mysql"
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"github.com/pingcap/tidb/store/mockstore"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/chunk"
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"github.com/pingcap/tidb/util/testleak"
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)
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var _ = Suite(&testGVCSuite{})
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type testGVCSuite struct{}
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func (gvcSuite *testGVCSuite) TestSimple(c *C) {
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defer testleak.AfterTest(c)()
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testleak.BeforeTest()
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store, err := mockstore.NewMockTikvStore()
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c.Assert(err, IsNil)
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defer store.Close()
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ddlLease := 50 * time.Millisecond
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dom := NewDomain(store, ddlLease, 0, mockFactory)
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err = dom.Init(ddlLease, sysMockFactory)
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c.Assert(err, IsNil)
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defer dom.Close()
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// Get empty global vars cache.
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gvc := dom.GetGlobalVarsCache()
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succ, rows, fields := gvc.Get()
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c.Assert(succ, IsFalse)
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c.Assert(rows, IsNil)
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c.Assert(fields, IsNil)
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// Get a variable from global vars cache.
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rf := getResultField("c", 1, 0)
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rf1 := getResultField("c1", 2, 1)
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ft := &types.FieldType{
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Tp: mysql.TypeString,
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Charset: charset.CharsetBin,
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Collate: charset.CollationBin,
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}
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ft1 := &types.FieldType{
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Tp: mysql.TypeString,
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Charset: charset.CharsetBin,
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Collate: charset.CollationBin,
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}
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ck := chunk.NewChunkWithCapacity([]*types.FieldType{ft, ft1}, 1024)
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ck.AppendString(0, "variable1")
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ck.AppendString(1, "value1")
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row := ck.GetRow(0)
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gvc.Update([]chunk.Row{row}, []*ast.ResultField{rf, rf1})
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succ, rows, fields = gvc.Get()
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c.Assert(succ, IsTrue)
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c.Assert(rows[0], Equals, row)
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c.Assert(fields, DeepEquals, []*ast.ResultField{rf, rf1})
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// Disable the cache.
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gvc.Disable()
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succ, rows, fields = gvc.Get()
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c.Assert(succ, IsFalse)
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c.Assert(rows[0], Equals, row)
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c.Assert(fields, DeepEquals, []*ast.ResultField{rf, rf1})
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}
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func getResultField(colName string, id, offset int) *ast.ResultField {
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return &ast.ResultField{
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Column: &model.ColumnInfo{
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Name: model.NewCIStr(colName),
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ID: int64(id),
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Offset: offset,
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FieldType: types.FieldType{
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Tp: mysql.TypeString,
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Charset: charset.CharsetUTF8,
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Collate: charset.CollationUTF8,
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},
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},
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TableAsName: model.NewCIStr("tbl"),
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DBName: model.NewCIStr("test"),
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}
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}
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