Source file
src/encoding/csv/writer_test.go
1
2
3
4
5 package csv
6
7 import (
8 "bytes"
9 "errors"
10 "strings"
11 "testing"
12 )
13
14 var writeTests = []struct {
15 Input [][]string
16 Output string
17 Error error
18 UseCRLF bool
19 Comma rune
20 }{
21 {Input: [][]string{{"abc"}}, Output: "abc\n"},
22 {Input: [][]string{{"abc"}}, Output: "abc\r\n", UseCRLF: true},
23 {Input: [][]string{{`"abc"`}}, Output: `"""abc"""` + "\n"},
24 {Input: [][]string{{`a"b`}}, Output: `"a""b"` + "\n"},
25 {Input: [][]string{{`"a"b"`}}, Output: `"""a""b"""` + "\n"},
26 {Input: [][]string{{" abc"}}, Output: `" abc"` + "\n"},
27 {Input: [][]string{{"abc,def"}}, Output: `"abc,def"` + "\n"},
28 {Input: [][]string{{"abc", "def"}}, Output: "abc,def\n"},
29 {Input: [][]string{{"abc"}, {"def"}}, Output: "abc\ndef\n"},
30 {Input: [][]string{{"abc\ndef"}}, Output: "\"abc\ndef\"\n"},
31 {Input: [][]string{{"abc\ndef"}}, Output: "\"abc\r\ndef\"\r\n", UseCRLF: true},
32 {Input: [][]string{{"abc\rdef"}}, Output: "\"abcdef\"\r\n", UseCRLF: true},
33 {Input: [][]string{{"abc\rdef"}}, Output: "\"abc\rdef\"\n", UseCRLF: false},
34 {Input: [][]string{{""}}, Output: "\n"},
35 {Input: [][]string{{"", ""}}, Output: ",\n"},
36 {Input: [][]string{{"", "", ""}}, Output: ",,\n"},
37 {Input: [][]string{{"", "", "a"}}, Output: ",,a\n"},
38 {Input: [][]string{{"", "a", ""}}, Output: ",a,\n"},
39 {Input: [][]string{{"", "a", "a"}}, Output: ",a,a\n"},
40 {Input: [][]string{{"a", "", ""}}, Output: "a,,\n"},
41 {Input: [][]string{{"a", "", "a"}}, Output: "a,,a\n"},
42 {Input: [][]string{{"a", "a", ""}}, Output: "a,a,\n"},
43 {Input: [][]string{{"a", "a", "a"}}, Output: "a,a,a\n"},
44 {Input: [][]string{{`\.`}}, Output: "\"\\.\"\n"},
45 {Input: [][]string{{"x09\x41\xb4\x1c", "aktau"}}, Output: "x09\x41\xb4\x1c,aktau\n"},
46 {Input: [][]string{{",x09\x41\xb4\x1c", "aktau"}}, Output: "\",x09\x41\xb4\x1c\",aktau\n"},
47 {Input: [][]string{{"a", "a", ""}}, Output: "a|a|\n", Comma: '|'},
48 {Input: [][]string{{",", ",", ""}}, Output: ",|,|\n", Comma: '|'},
49 {Input: [][]string{{"foo"}}, Comma: '"', Error: errInvalidDelim},
50 }
51
52 func TestWrite(t *testing.T) {
53 for n, tt := range writeTests {
54 b := &strings.Builder{}
55 f := NewWriter(b)
56 f.UseCRLF = tt.UseCRLF
57 if tt.Comma != 0 {
58 f.Comma = tt.Comma
59 }
60 err := f.WriteAll(tt.Input)
61 if err != tt.Error {
62 t.Errorf("Unexpected error:\ngot %v\nwant %v", err, tt.Error)
63 }
64 out := b.String()
65 if out != tt.Output {
66 t.Errorf("#%d: out=%q want %q", n, out, tt.Output)
67 }
68 }
69 }
70
71 type errorWriter struct{}
72
73 func (e errorWriter) Write(b []byte) (int, error) {
74 return 0, errors.New("Test")
75 }
76
77 func TestError(t *testing.T) {
78 b := &bytes.Buffer{}
79 f := NewWriter(b)
80 f.Write([]string{"abc"})
81 f.Flush()
82 err := f.Error()
83
84 if err != nil {
85 t.Errorf("Unexpected error: %s\n", err)
86 }
87
88 f = NewWriter(errorWriter{})
89 f.Write([]string{"abc"})
90 f.Flush()
91 err = f.Error()
92
93 if err == nil {
94 t.Error("Error should not be nil")
95 }
96 }
97
98 var benchmarkWriteData = [][]string{
99 {"abc", "def", "12356", "1234567890987654311234432141542132"},
100 {"abc", "def", "12356", "1234567890987654311234432141542132"},
101 {"abc", "def", "12356", "1234567890987654311234432141542132"},
102 }
103
104 func BenchmarkWrite(b *testing.B) {
105 for i := 0; i < b.N; i++ {
106 w := NewWriter(&bytes.Buffer{})
107 err := w.WriteAll(benchmarkWriteData)
108 if err != nil {
109 b.Fatal(err)
110 }
111 w.Flush()
112 }
113 }
114
View as plain text