FilesExpand file tree

main

/

stringutil_test.go

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

271 lines (256 loc) · 4.83 KB

main

/

stringutil_test.go

Copy path

Top

File metadata and controls

• Code
• Blame

271 lines (256 loc) · 4.83 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

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

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

//go:build !integration

package stringutil

import (

"testing"

"github.com/stretchr/testify/assert"

)

func TestTruncate(t *testing.T) {

t.Parallel()

tests := []struct {

name string

s string

maxLen int

expected string

}{

{

name: "string shorter than max length",

s: "hello",

maxLen: 10,

expected: "hello",

},

{

name: "string equal to max length",

s: "hello",

maxLen: 5,

expected: "hello",

},

{

name: "string longer than max length",

s: "hello world",

maxLen: 8,

expected: "hello...",

},

{

name: "max length 3",

s: "hello",

maxLen: 3,

expected: "hel",

},

{

name: "max length 2",

s: "hello",

maxLen: 2,

expected: "he",

},

{

name: "max length 1",

s: "hello",

maxLen: 1,

expected: "h",

},

{

name: "max length zero",

s: "hello",

maxLen: 0,

expected: "",

},

{

name: "exactly three chars",

s: "abc",

maxLen: 3,

expected: "abc",

},

{

name: "four chars exact length",

s: "abcd",

maxLen: 4,

expected: "abcd",

},

{

name: "five chars truncated to four",

s: "abcde",

maxLen: 4,

expected: "a...",

},

{

name: "empty string",

s: "",

maxLen: 5,

expected: "",

},

{

name: "long string truncated",

s: "this is a very long string that needs to be truncated",

maxLen: 20,

expected: "this is a very lo...",

},

}

for _, tt := range tests {

t.Run(tt.name, func(t *testing.T) {

t.Parallel()

result := Truncate(tt.s, tt.maxLen)

assert.Equal(t, tt.expected, result, "Truncate(%q, %d) should return expected output", tt.s, tt.maxLen)

})

}

}

func BenchmarkTruncate(b *testing.B) {

s := "this is a very long string that needs to be truncated for testing purposes"

for b.Loop() {

Truncate(s, 30)

}

}

// Additional edge case tests

func TestTruncate_Unicode(t *testing.T) {

t.Parallel()

tests := []struct {

name string

s string

maxLen int

expected string

}{

{

name: "emoji truncation",

s: "Hello 👋 World 🌍",

maxLen: 10,

expected: "Hello \xf0...", // Truncates in middle of emoji byte sequence

},

{

name: "unicode characters",

s: "Café España México",

maxLen: 12,

expected: "Café Esp...", // Actual behavior

},

{

name: "mixed unicode and ascii",

s: "Test-测试-テスト",

maxLen: 8,

expected: "Test-...",

},

}

for _, tt := range tests {

t.Run(tt.name, func(t *testing.T) {

t.Parallel()

result := Truncate(tt.s, tt.maxLen)

assert.Equal(t, tt.expected, result, "Truncate(%q, %d) should handle unicode input as expected", tt.s, tt.maxLen)

})

}

}

func BenchmarkTruncate_Short(b *testing.B) {

s := "short"

for b.Loop() {

Truncate(s, 10)

}

}

func BenchmarkTruncate_Long(b *testing.B) {

s := "this is a very very very very very long string that definitely needs truncation"

for b.Loop() {

Truncate(s, 20)

}

}

func TestFormatList(t *testing.T) {

t.Parallel()

tests := []struct {

name string

items []string

expected string

}{

{

name: "empty slice",

items: []string{},

expected: "",

},

{

name: "single item",

items: []string{"a"},

expected: "a",

},

{

name: "two items",

items: []string{"a", "b"},

expected: "a and b",

},

{

name: "three items",

items: []string{"a", "b", "c"},

expected: "a, b, and c",

},

{

name: "four items",

items: []string{"a", "b", "c", "d"},

expected: "a, b, c, and d",

},

}

for _, tt := range tests {

t.Run(tt.name, func(t *testing.T) {

t.Parallel()

result := FormatList(tt.items)

assert.Equal(t, tt.expected, result, "FormatList(%v) should return natural-language list formatting", tt.items)

})

}

}

func TestIsPositiveInteger(t *testing.T) {

t.Parallel()

tests := []struct {

name string

s string

want bool

}{

{

name: "positive integer",

s: "123",

want: true,

},

{

name: "one",

s: "1",

want: true,

},

{

name: "large number",

s: "999999999",

want: true,

},

{

name: "zero",

s: "0",

want: false,

},

{

name: "negative",

s: "-5",

want: false,

},

{

name: "leading zeros",

s: "007",

want: false,

},

{

name: "float",

s: "3.14",

want: false,

},

{

name: "not a number",

s: "abc",

want: false,

},

{

name: "empty string",

s: "",

want: false,

},

{

name: "spaces",

s: " 123 ",

want: false,

},

}

for _, tt := range tests {

t.Run(tt.name, func(t *testing.T) {

t.Parallel()

got := IsPositiveInteger(tt.s)

assert.Equal(t, tt.want, got, "IsPositiveInteger(%q) should match expected positivity result", tt.s)

})

}

}