fuzz.go

     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  
     7  package csv
     8  
     9  import (
    10  	"bytes"
    11  	"fmt"
    12  	"reflect"
    13  )
    14  
    15  func Fuzz(data []byte) int {
    16  	score := 0
    17  	buf := new(bytes.Buffer)
    18  
    19  	for _, tt := range []Reader{
    20  		{},
    21  		{Comma: ';'},
    22  		{Comma: '\t'},
    23  		{LazyQuotes: true},
    24  		{TrimLeadingSpace: true},
    25  		{Comment: '#'},
    26  		{Comment: ';'},
    27  	} {
    28  		r := NewReader(bytes.NewReader(data))
    29  		r.Comma = tt.Comma
    30  		r.Comment = tt.Comment
    31  		r.LazyQuotes = tt.LazyQuotes
    32  		r.TrimLeadingSpace = tt.TrimLeadingSpace
    33  
    34  		records, err := r.ReadAll()
    35  		if err != nil {
    36  			continue
    37  		}
    38  		score = 1
    39  
    40  		buf.Reset()
    41  		w := NewWriter(buf)
    42  		w.Comma = tt.Comma
    43  		err = w.WriteAll(records)
    44  		if err != nil {
    45  			fmt.Printf("writer  = %#v\n", w)
    46  			fmt.Printf("records = %v\n", records)
    47  			panic(err)
    48  		}
    49  
    50  		r = NewReader(buf)
    51  		r.Comma = tt.Comma
    52  		r.Comment = tt.Comment
    53  		r.LazyQuotes = tt.LazyQuotes
    54  		r.TrimLeadingSpace = tt.TrimLeadingSpace
    55  		result, err := r.ReadAll()
    56  		if err != nil {
    57  			fmt.Printf("reader  = %#v\n", r)
    58  			fmt.Printf("records = %v\n", records)
    59  			panic(err)
    60  		}
    61  
    62  		if !reflect.DeepEqual(records, result) {
    63  			fmt.Println("records = \n", records)
    64  			fmt.Println("result  = \n", records)
    65  			panic("not equal")
    66  		}
    67  	}
    68  
    69  	return score
    70  }
    71
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