storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/pkg/csvparser/writer_test.go (about)

     1  // Copyright 2011 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 https://golang.org/LICENSE
     4  
     5  package csv
     6  
     7  import (
     8  	"bytes"
     9  	"errors"
    10  	"testing"
    11  )
    12  
    13  var writeTests = []struct {
    14  	Input       [][]string
    15  	Output      string
    16  	Error       error
    17  	UseCRLF     bool
    18  	Comma       rune
    19  	Quote       rune
    20  	AlwaysQuote bool
    21  }{
    22  	{Input: [][]string{{"abc"}}, Output: "abc\n"},
    23  	{Input: [][]string{{"abc"}}, Output: "abc\r\n", UseCRLF: true},
    24  	{Input: [][]string{{`"abc"`}}, Output: `"""abc"""` + "\n"},
    25  	{Input: [][]string{{`a"b`}}, Output: `"a""b"` + "\n"},
    26  	{Input: [][]string{{`"a"b"`}}, Output: `"""a""b"""` + "\n"},
    27  	{Input: [][]string{{" abc"}}, Output: `" abc"` + "\n"},
    28  	{Input: [][]string{{"abc,def"}}, Output: `"abc,def"` + "\n"},
    29  	{Input: [][]string{{"abc", "def"}}, Output: "abc,def\n"},
    30  	{Input: [][]string{{"abc"}, {"def"}}, Output: "abc\ndef\n"},
    31  	{Input: [][]string{{"abc\ndef"}}, Output: "\"abc\ndef\"\n"},
    32  	{Input: [][]string{{"abc\ndef"}}, Output: "\"abc\r\ndef\"\r\n", UseCRLF: true},
    33  	{Input: [][]string{{"abc\rdef"}}, Output: "\"abcdef\"\r\n", UseCRLF: true},
    34  	{Input: [][]string{{"abc\rdef"}}, Output: "\"abc\rdef\"\n", UseCRLF: false},
    35  	{Input: [][]string{{""}}, Output: "\n"},
    36  	{Input: [][]string{{"", ""}}, Output: ",\n"},
    37  	{Input: [][]string{{"", "", ""}}, Output: ",,\n"},
    38  	{Input: [][]string{{"", "", "a"}}, Output: ",,a\n"},
    39  	{Input: [][]string{{"", "a", ""}}, Output: ",a,\n"},
    40  	{Input: [][]string{{"", "a", "a"}}, Output: ",a,a\n"},
    41  	{Input: [][]string{{"a", "", ""}}, Output: "a,,\n"},
    42  	{Input: [][]string{{"a", "", "a"}}, Output: "a,,a\n"},
    43  	{Input: [][]string{{"a", "a", ""}}, Output: "a,a,\n"},
    44  	{Input: [][]string{{"a", "a", "a"}}, Output: "a,a,a\n"},
    45  	{Input: [][]string{{`\.`}}, Output: "\"\\.\"\n"},
    46  	{Input: [][]string{{"x09\x41\xb4\x1c", "aktau"}}, Output: "x09\x41\xb4\x1c,aktau\n"},
    47  	{Input: [][]string{{",x09\x41\xb4\x1c", "aktau"}}, Output: "\",x09\x41\xb4\x1c\",aktau\n"},
    48  	{Input: [][]string{{"a", "a", ""}}, Output: "a|a|\n", Comma: '|'},
    49  	{Input: [][]string{{",", ",", ""}}, Output: ",|,|\n", Comma: '|'},
    50  	{Input: [][]string{{"foo"}}, Comma: '"', Error: errInvalidDelim},
    51  	{Input: [][]string{{"a", "a", ""}}, Quote: '"', AlwaysQuote: true, Output: "\"a\"|\"a\"|\"\"\n", Comma: '|'},
    52  }
    53  
    54  func TestWrite(t *testing.T) {
    55  	for n, tt := range writeTests {
    56  		b := &bytes.Buffer{}
    57  		f := NewWriter(b)
    58  		f.UseCRLF = tt.UseCRLF
    59  		if tt.Comma != 0 {
    60  			f.Comma = tt.Comma
    61  		}
    62  		if tt.Quote != 0 {
    63  			f.Quote = tt.Quote
    64  		}
    65  		f.AlwaysQuote = tt.AlwaysQuote
    66  		err := f.WriteAll(tt.Input)
    67  		if err != tt.Error {
    68  			t.Errorf("Unexpected error:\ngot  %v\nwant %v", err, tt.Error)
    69  		}
    70  		out := b.String()
    71  		if out != tt.Output {
    72  			t.Errorf("#%d: out=%q want %q", n, out, tt.Output)
    73  		}
    74  	}
    75  }
    76  
    77  type errorWriter struct{}
    78  
    79  func (e errorWriter) Write(b []byte) (int, error) {
    80  	return 0, errors.New("Test")
    81  }
    82  
    83  func TestError(t *testing.T) {
    84  	b := &bytes.Buffer{}
    85  	f := NewWriter(b)
    86  	f.Write([]string{"abc"})
    87  	f.Flush()
    88  	err := f.Error()
    89  
    90  	if err != nil {
    91  		t.Errorf("Unexpected error: %s\n", err)
    92  	}
    93  
    94  	f = NewWriter(errorWriter{})
    95  	f.Write([]string{"abc"})
    96  	f.Flush()
    97  	err = f.Error()
    98  
    99  	if err == nil {
   100  		t.Error("Error should not be nil")
   101  	}
   102  }