File size: 2,179 Bytes
8059bf0 | 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 | //go:build unit
package admin
import (
"testing"
"github.com/stretchr/testify/require"
)
// truncateSearchByRune 模拟 user_handler.go 中的 search 截断逻辑
func truncateSearchByRune(search string, maxRunes int) string {
if runes := []rune(search); len(runes) > maxRunes {
return string(runes[:maxRunes])
}
return search
}
func TestTruncateSearchByRune(t *testing.T) {
tests := []struct {
name string
input string
maxRunes int
wantLen int // 期望的 rune 长度
}{
{
name: "纯中文超长",
input: string(make([]rune, 150)),
maxRunes: 100,
wantLen: 100,
},
{
name: "纯 ASCII 超长",
input: string(make([]byte, 150)),
maxRunes: 100,
wantLen: 100,
},
{
name: "空字符串",
input: "",
maxRunes: 100,
wantLen: 0,
},
{
name: "恰好 100 个字符",
input: string(make([]rune, 100)),
maxRunes: 100,
wantLen: 100,
},
{
name: "不足 100 字符不截断",
input: "hello世界",
maxRunes: 100,
wantLen: 7,
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
result := truncateSearchByRune(tc.input, tc.maxRunes)
require.Equal(t, tc.wantLen, len([]rune(result)))
})
}
}
func TestTruncateSearchByRune_PreservesMultibyte(t *testing.T) {
// 101 个中文字符，截断到 100 个后应该仍然是有效 UTF-8
input := ""
for i := 0; i < 101; i++ {
input += "中"
}
result := truncateSearchByRune(input, 100)
require.Equal(t, 100, len([]rune(result)))
// 验证截断结果是有效的 UTF-8（每个中文字符 3 字节）
require.Equal(t, 300, len(result))
}
func TestTruncateSearchByRune_MixedASCIIAndMultibyte(t *testing.T) {
// 50 个 ASCII + 51 个中文 = 101 个 rune
input := ""
for i := 0; i < 50; i++ {
input += "a"
}
for i := 0; i < 51; i++ {
input += "中"
}
result := truncateSearchByRune(input, 100)
runes := []rune(result)
require.Equal(t, 100, len(runes))
// 前 50 个应该是 'a'，后 50 个应该是 '中'
require.Equal(t, 'a', runes[0])
require.Equal(t, 'a', runes[49])
require.Equal(t, '中', runes[50])
require.Equal(t, '中', runes[99])
}
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