1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
package regexp
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestFind(t *testing.T) {
f, err := Find(`[a-z]+`, `foo bar baz`)
require.NoError(t, err)
assert.Equal(t, "foo", f)
_, err = Find(`[a-`, "")
require.Error(t, err)
}
func TestFindAll(t *testing.T) {
_, err := FindAll(`[a-`, 42, "")
require.Error(t, err)
testdata := []struct {
re string
in string
expected []string
n int
}{
{`[a-z]+`, `foo bar baz`, []string{"foo", "bar", "baz"}, -1},
{`[a-z]+`, `foo bar baz`, nil, 0},
{`[a-z]+`, `foo bar baz`, []string{"foo", "bar"}, 2},
{`[a-z]+`, `foo bar baz`, []string{"foo", "bar", "baz"}, 14},
}
for _, d := range testdata {
f, err := FindAll(d.re, d.n, d.in)
require.NoError(t, err)
assert.Equal(t, d.expected, f)
}
}
func TestMatch(t *testing.T) {
actual, err := Match(`^[a-z]+\[[0-9]+\]$`, "adam[23]")
require.NoError(t, err)
assert.True(t, actual)
actual, err = Match(`^[a-z]+\[[0-9]+\]$`, "eve[7]")
require.NoError(t, err)
assert.True(t, actual)
actual, err = Match(`^[a-z]+\[[0-9]+\]$`, "Job[48]")
require.NoError(t, err)
assert.False(t, actual)
actual, err = Match(`^[a-z]+\[[0-9]+\]$`, "snakey")
require.NoError(t, err)
assert.False(t, actual)
}
func TestReplace(t *testing.T) {
testdata := []struct {
expected string
expression string
replacement string
input string
}{
{"-T-T-", "a(x*)b", "T", "-ab-axxb-"},
{"--xx-", "a(x*)b", "$1", "-ab-axxb-"},
{"---", "a(x*)b", "$1W", "-ab-axxb-"},
{"-W-xxW-", "a(x*)b", "${1}W", "-ab-axxb-"},
{"Turing, Alan", "(?P<first>[a-zA-Z]+) (?P<last>[a-zA-Z]+)", "${last}, ${first}", "Alan Turing"},
}
for _, d := range testdata {
actual, err := Replace(d.expression, d.replacement, d.input)
require.NoError(t, err)
assert.Equal(t, d.expected, actual)
}
}
func TestReplaceLiteral(t *testing.T) {
_, err := ReplaceLiteral(`[a-`, "", "")
require.Error(t, err)
testdata := []struct {
expected string
expression string
replacement string
input string
}{
{"-T-T-", "a(x*)b", "T", "-ab-axxb-"},
{"-$1-$1-", "a(x*)b", "$1", "-ab-axxb-"},
{"-$1W-$1W-", "a(x*)b", "$1W", "-ab-axxb-"},
{"-${1}W-${1}W-", "a(x*)b", "${1}W", "-ab-axxb-"},
{"${last}, ${first}", "(?P<first>[a-zA-Z]+) (?P<last>[a-zA-Z]+)", "${last}, ${first}", "Alan Turing"},
}
for _, d := range testdata {
r, err := ReplaceLiteral(d.expression, d.replacement, d.input)
require.NoError(t, err)
assert.Equal(t, d.expected, r)
}
}
func TestSplit(t *testing.T) {
_, err := Split(`[a-`, 42, "")
require.Error(t, err)
testdata := []struct {
re string
in string
expected []string
n int
}{
{`\s+`, "foo bar baz\tqux", []string{"foo", "bar", "baz", "qux"}, -1},
{`,`, `foo bar baz`, nil, 0},
{` `, `foo bar baz`, []string{"foo", "bar baz"}, 2},
{`[\s,.]`, `foo bar.baz,qux`, []string{"foo", "bar", "baz", "qux"}, 14},
}
for _, d := range testdata {
f, err := Split(d.re, d.n, d.in)
require.NoError(t, err)
assert.Equal(t, d.expected, f)
}
}
func TestQuoteMeta(t *testing.T) {
assert.Equal(t, `foo\{\(\\`, QuoteMeta(`foo{(\`))
}
|
