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
|
package disk_cache
import (
"fmt"
"os"
"path/filepath"
"runtime/debug"
"strings"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/kovidgoyal/kitty/tools/utils"
)
var _ = fmt.Print
func TestDiskCache(t *testing.T) {
tdir := t.TempDir()
dc, err := NewDiskCache(tdir, 64)
if err != nil {
t.Fatal(err)
}
dc2, err := NewDiskCache(tdir, dc.MaxSize)
if err != nil {
t.Fatal(err)
}
ensure_entries := func() {
for _, x := range []*DiskCache{dc, dc2} {
if err = x.ensure_entries(); err != nil {
t.Fatal(err)
}
}
}
arc := func(counts ...int) {
ensure_entries()
if diff := cmp.Diff(counts, []int{dc.read_count, dc2.read_count}); diff != "" {
t.Fatalf("disk cache has unexpected read count\n%s\n%s", diff, debug.Stack())
}
}
add := func(dc *DiskCache, key string, data map[string]string) {
d := make(map[string][]byte, len(data))
for k, v := range data {
d[k] = []byte(v)
}
if _, err := dc.Add(key, d); err != nil {
t.Fatal(err)
}
ensure_entries()
}
m, err := dc.Get("missing", "one", "two")
if err != nil {
t.Fatal(err)
}
if len(m) > 0 {
t.Fatalf("Unexpected return from missing: %s", m)
}
ad := func(key string, expected map[string]string) {
for _, x := range []*DiskCache{dc, dc2} {
actual, err := x.Get(key, utils.Keys(expected)...)
if err != nil {
t.Fatal(err)
}
for k, path := range actual {
d, err := os.ReadFile(path)
if err != nil {
t.Fatal(err)
}
actual[k] = string(d)
}
if diff := cmp.Diff(expected, actual); diff != "" {
t.Fatalf("Data for %s not equal: %s", key, diff)
}
ensure_entries()
}
}
ak := func(keys ...string) {
for i, x := range []*DiskCache{dc, dc2} {
kk, err := x.keys()
if err != nil {
t.Fatal(err)
}
if diff := cmp.Diff(keys, kk); diff != "" {
t.Fatalf("wrong keys in %d: %s", i+1, diff)
}
}
ensure_entries()
}
add(dc, "k1", map[string]string{"1": "abcd", "2": "efgh"})
arc(0, 1)
ad("k1", map[string]string{"1": "abcd", "2": "efgh"})
arc(1, 2) // the two gets cause two updates
add(dc, "k1", map[string]string{"3": "ijk", "4": "lmo"})
arc(1, 3) // dc.Add() causes re-read in dc2
ak("k1")
arc(1, 3)
add(dc2, "k2", map[string]string{"1": "123456789"})
arc(2, 3) // dc2.Add() causes re-read in dc
ak("k1", "k2")
arc(2, 3)
ad("k1", map[string]string{"1": "abcd", "2": "efgh", "3": "ijk"})
if dc.entries.TotalSize != 14+9 {
t.Fatalf("TotalSize: %d != %d", dc.entries.TotalSize, 14+9)
}
arc(3, 4) // the two gets cause two updates
ak("k2", "k1")
dc.Get("k2")
arc(3, 5) // dc.Get() causes dc2 to read
ak("k1", "k2")
add(dc, "k3", map[string]string{"1": strings.Repeat("a", int(dc.MaxSize)-10)})
arc(3, 6) // dc.Add() causes dc2 to read
ak("k2", "k3")
// check that creating a new disk cache prunes
_, err = NewDiskCache(tdir, dc.MaxSize-8)
if err != nil {
t.Fatal(err)
}
ak("k3")
arc(4, 7) // NewDiskCache()
// test the path api
path := filepath.Join(tdir, "source")
if err = os.WriteFile(path, []byte("abcdfjrof"), 0o600); err != nil {
t.Fatal(err)
}
key, _, err := dc.GetPath(path)
if _, err = dc.AddPath(path, key, map[string][]byte{"1": []byte("1")}); err != nil {
t.Fatal(err)
}
_, _, entries_before, _ := dc.entries_from_folders()
if diff := cmp.Diff(1, len(dc.entries.PathMap)); diff != "" {
t.Fatalf("unexpected pathmap count: %s", diff)
}
if err = os.WriteFile(path, []byte("changed contents"), 0o600); err != nil {
t.Fatal(err)
}
if _, err = dc.AddPath(path, key, map[string][]byte{"1": []byte("2")}); err != nil {
t.Fatal(err)
}
if diff := cmp.Diff(1, len(dc.entries.PathMap)); diff != "" {
t.Fatalf("unexpected pathmap count: %s", diff)
}
_, _, entries_after, _ := dc.entries_from_folders()
if len(entries_before) != len(entries_after) {
t.Fatalf("unexpected entries: %s", entries_after)
}
arc(4, 8) // dc.AddPath() causes dc2 to read
}
|
