fuzz.go

Documentation: encoding/csv

     1  // Copyright 2019 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build gofuzz
     6  // +build gofuzz
     7  
     8  package csv
     9  
    10  import (
    11  	"bytes"
    12  	"fmt"
    13  	"reflect"
    14  )
    15  
    16  func Fuzz(data []byte) int {
    17  	score := 0
    18  	buf := new(bytes.Buffer)
    19  
    20  	for _, tt := range []Reader{
    21  		{},
    22  		{Comma: ';'},
    23  		{Comma: '\t'},
    24  		{LazyQuotes: true},
    25  		{TrimLeadingSpace: true},
    26  		{Comment: '#'},
    27  		{Comment: ';'},
    28  	} {
    29  		r := NewReader(bytes.NewReader(data))
    30  		r.Comma = tt.Comma
    31  		r.Comment = tt.Comment
    32  		r.LazyQuotes = tt.LazyQuotes
    33  		r.TrimLeadingSpace = tt.TrimLeadingSpace
    34  
    35  		records, err := r.ReadAll()
    36  		if err != nil {
    37  			continue
    38  		}
    39  		score = 1
    40  
    41  		buf.Reset()
    42  		w := NewWriter(buf)
    43  		w.Comma = tt.Comma
    44  		err = w.WriteAll(records)
    45  		if err != nil {
    46  			fmt.Printf("writer  = %#v\n", w)
    47  			fmt.Printf("records = %v\n", records)
    48  			panic(err)
    49  		}
    50  
    51  		r = NewReader(buf)
    52  		r.Comma = tt.Comma
    53  		r.Comment = tt.Comment
    54  		r.LazyQuotes = tt.LazyQuotes
    55  		r.TrimLeadingSpace = tt.TrimLeadingSpace
    56  		result, err := r.ReadAll()
    57  		if err != nil {
    58  			fmt.Printf("reader  = %#v\n", r)
    59  			fmt.Printf("records = %v\n", records)
    60  			panic(err)
    61  		}
    62  
    63  		if !reflect.DeepEqual(records, result) {
    64  			fmt.Println("records = \n", records)
    65  			fmt.Println("result  = \n", records)
    66  			panic("not equal")
    67  		}
    68  	}
    69  
    70  	return score
    71  }
    72
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