59 lines
2.0 KiB
Go
59 lines
2.0 KiB
Go
// Copyright 2021 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 parser_test
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import (
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"runtime"
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"strings"
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"testing"
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"github.com/pingcap/tidb/parser"
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"github.com/pingcap/tidb/parser/charset"
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"github.com/stretchr/testify/require"
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)
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func TestInsertStatementMemoryAllocation(t *testing.T) {
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sql := "insert t values (1)" + strings.Repeat(",(1)", 1000)
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var oldStats, newStats runtime.MemStats
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runtime.ReadMemStats(&oldStats)
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_, err := parser.New().ParseOneStmt(sql, "", "")
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require.NoError(t, err)
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runtime.ReadMemStats(&newStats)
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require.Less(t, int(newStats.TotalAlloc-oldStats.TotalAlloc), 1024*500)
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}
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func TestCharsetIntroducer(t *testing.T) {
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p := parser.New()
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// `_gbk` is treated as an identifier.
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_, _, err := p.Parse("select _gbk 'a';", "", "")
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require.NoError(t, err)
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charset.AddCharset(&charset.Charset{
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Name: "gbk",
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DefaultCollation: "gbk_bin",
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Collations: map[string]*charset.Collation{},
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Desc: "gbk",
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Maxlen: 2,
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})
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defer charset.RemoveCharset("gbk")
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// `_gbk` is treated as a character set.
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_, _, err = p.Parse("select _gbk 'a';", "", "")
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require.EqualError(t, err, "[ddl:1115]Unsupported character introducer: 'gbk'")
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_, _, err = p.Parse("select _gbk 0x1234;", "", "")
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require.EqualError(t, err, "[ddl:1115]Unsupported character introducer: 'gbk'")
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_, _, err = p.Parse("select _gbk 0b101001;", "", "")
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require.EqualError(t, err, "[ddl:1115]Unsupported character introducer: 'gbk'")
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}
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