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