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
|
package decoder
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestStringCacheOffsetZero(t *testing.T) {
cache := newStringCache()
data := []byte("hello world, this is test data")
// Test string at offset 0
str1 := cache.internAt(0, 5, data)
require.Equal(t, "hello", str1)
// Second call should hit cache and return same interned string
str2 := cache.internAt(0, 5, data)
require.Equal(t, "hello", str2)
// Note: Both strings should be identical (cache hit)
// We can't easily test if they're the same object without unsafe,
// but correctness is verified by the equal values
}
func TestStringCacheVariousOffsets(t *testing.T) {
cache := newStringCache()
data := []byte("abcdefghijklmnopqrstuvwxyz")
testCases := []struct {
offset uint
size uint
expected string
}{
{0, 3, "abc"},
{5, 3, "fgh"},
{10, 5, "klmno"},
{23, 3, "xyz"},
}
for _, tc := range testCases {
// First call
str1 := cache.internAt(tc.offset, tc.size, data)
require.Equal(t, tc.expected, str1)
// Second call should hit cache
str2 := cache.internAt(tc.offset, tc.size, data)
require.Equal(t, tc.expected, str2)
// Verify cache hit returns correct value (interning tested via behavior)
}
}
|
