+++ /dev/null
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package cache
-
-import (
- "bytes"
- "encoding/binary"
- "fmt"
- "io/ioutil"
- "os"
- "path/filepath"
- "testing"
- "time"
-)
-
-func init() {
- verify = false // even if GODEBUG is set
-}
-
-func TestBasic(t *testing.T) {
- dir, err := ioutil.TempDir("", "cachetest-")
- if err != nil {
- t.Fatal(err)
- }
- defer os.RemoveAll(dir)
- _, err = Open(filepath.Join(dir, "notexist"))
- if err == nil {
- t.Fatal(`Open("tmp/notexist") succeeded, want failure`)
- }
-
- cdir := filepath.Join(dir, "c1")
- if err := os.Mkdir(cdir, 0777); err != nil {
- t.Fatal(err)
- }
-
- c1, err := Open(cdir)
- if err != nil {
- t.Fatalf("Open(c1) (create): %v", err)
- }
- if err := c1.putIndexEntry(dummyID(1), dummyID(12), 13, true); err != nil {
- t.Fatalf("addIndexEntry: %v", err)
- }
- if err := c1.putIndexEntry(dummyID(1), dummyID(2), 3, true); err != nil { // overwrite entry
- t.Fatalf("addIndexEntry: %v", err)
- }
- if entry, err := c1.Get(dummyID(1)); err != nil || entry.OutputID != dummyID(2) || entry.Size != 3 {
- t.Fatalf("c1.Get(1) = %x, %v, %v, want %x, %v, nil", entry.OutputID, entry.Size, err, dummyID(2), 3)
- }
-
- c2, err := Open(cdir)
- if err != nil {
- t.Fatalf("Open(c2) (reuse): %v", err)
- }
- if entry, err := c2.Get(dummyID(1)); err != nil || entry.OutputID != dummyID(2) || entry.Size != 3 {
- t.Fatalf("c2.Get(1) = %x, %v, %v, want %x, %v, nil", entry.OutputID, entry.Size, err, dummyID(2), 3)
- }
- if err := c2.putIndexEntry(dummyID(2), dummyID(3), 4, true); err != nil {
- t.Fatalf("addIndexEntry: %v", err)
- }
- if entry, err := c1.Get(dummyID(2)); err != nil || entry.OutputID != dummyID(3) || entry.Size != 4 {
- t.Fatalf("c1.Get(2) = %x, %v, %v, want %x, %v, nil", entry.OutputID, entry.Size, err, dummyID(3), 4)
- }
-}
-
-func TestGrowth(t *testing.T) {
- dir, err := ioutil.TempDir("", "cachetest-")
- if err != nil {
- t.Fatal(err)
- }
- defer os.RemoveAll(dir)
-
- c, err := Open(dir)
- if err != nil {
- t.Fatalf("Open: %v", err)
- }
-
- n := 10000
- if testing.Short() {
- n = 1000
- }
-
- for i := 0; i < n; i++ {
- if err := c.putIndexEntry(dummyID(i), dummyID(i*99), int64(i)*101, true); err != nil {
- t.Fatalf("addIndexEntry: %v", err)
- }
- id := ActionID(dummyID(i))
- entry, err := c.Get(id)
- if err != nil {
- t.Fatalf("Get(%x): %v", id, err)
- }
- if entry.OutputID != dummyID(i*99) || entry.Size != int64(i)*101 {
- t.Errorf("Get(%x) = %x, %d, want %x, %d", id, entry.OutputID, entry.Size, dummyID(i*99), int64(i)*101)
- }
- }
- for i := 0; i < n; i++ {
- id := ActionID(dummyID(i))
- entry, err := c.Get(id)
- if err != nil {
- t.Fatalf("Get2(%x): %v", id, err)
- }
- if entry.OutputID != dummyID(i*99) || entry.Size != int64(i)*101 {
- t.Errorf("Get2(%x) = %x, %d, want %x, %d", id, entry.OutputID, entry.Size, dummyID(i*99), int64(i)*101)
- }
- }
-}
-
-func TestVerifyPanic(t *testing.T) {
- os.Setenv("GODEBUG", "gocacheverify=1")
- initEnv()
- defer func() {
- os.Unsetenv("GODEBUG")
- verify = false
- }()
-
- if !verify {
- t.Fatal("initEnv did not set verify")
- }
-
- dir, err := ioutil.TempDir("", "cachetest-")
- if err != nil {
- t.Fatal(err)
- }
- defer os.RemoveAll(dir)
-
- c, err := Open(dir)
- if err != nil {
- t.Fatalf("Open: %v", err)
- }
-
- id := ActionID(dummyID(1))
- if err := c.PutBytes(id, []byte("abc")); err != nil {
- t.Fatal(err)
- }
-
- defer func() {
- if err := recover(); err != nil {
- t.Log(err)
- return
- }
- }()
- c.PutBytes(id, []byte("def"))
- t.Fatal("mismatched Put did not panic in verify mode")
-}
-
-func dummyID(x int) [HashSize]byte {
- var out [HashSize]byte
- binary.LittleEndian.PutUint64(out[:], uint64(x))
- return out
-}
-
-func TestCacheTrim(t *testing.T) {
- dir, err := ioutil.TempDir("", "cachetest-")
- if err != nil {
- t.Fatal(err)
- }
- defer os.RemoveAll(dir)
-
- c, err := Open(dir)
- if err != nil {
- t.Fatalf("Open: %v", err)
- }
- const start = 1000000000
- now := int64(start)
- c.now = func() time.Time { return time.Unix(now, 0) }
-
- checkTime := func(name string, mtime int64) {
- t.Helper()
- file := filepath.Join(c.dir, name[:2], name)
- info, err := os.Stat(file)
- if err != nil {
- t.Fatal(err)
- }
- if info.ModTime().Unix() != mtime {
- t.Fatalf("%s mtime = %d, want %d", name, info.ModTime().Unix(), mtime)
- }
- }
-
- id := ActionID(dummyID(1))
- c.PutBytes(id, []byte("abc"))
- entry, _ := c.Get(id)
- c.PutBytes(ActionID(dummyID(2)), []byte("def"))
- mtime := now
- checkTime(fmt.Sprintf("%x-a", id), mtime)
- checkTime(fmt.Sprintf("%x-d", entry.OutputID), mtime)
-
- // Get should not change recent mtimes.
- now = start + 10
- c.Get(id)
- checkTime(fmt.Sprintf("%x-a", id), mtime)
- checkTime(fmt.Sprintf("%x-d", entry.OutputID), mtime)
-
- // Get should change distant mtimes.
- now = start + 5000
- mtime2 := now
- if _, err := c.Get(id); err != nil {
- t.Fatal(err)
- }
- c.OutputFile(entry.OutputID)
- checkTime(fmt.Sprintf("%x-a", id), mtime2)
- checkTime(fmt.Sprintf("%x-d", entry.OutputID), mtime2)
-
- // Trim should leave everything alone: it's all too new.
- c.Trim()
- if _, err := c.Get(id); err != nil {
- t.Fatal(err)
- }
- c.OutputFile(entry.OutputID)
- data, err := ioutil.ReadFile(filepath.Join(dir, "trim.txt"))
- if err != nil {
- t.Fatal(err)
- }
- checkTime(fmt.Sprintf("%x-a", dummyID(2)), start)
-
- // Trim less than a day later should not do any work at all.
- now = start + 80000
- c.Trim()
- if _, err := c.Get(id); err != nil {
- t.Fatal(err)
- }
- c.OutputFile(entry.OutputID)
- data2, err := ioutil.ReadFile(filepath.Join(dir, "trim.txt"))
- if err != nil {
- t.Fatal(err)
- }
- if !bytes.Equal(data, data2) {
- t.Fatalf("second trim did work: %q -> %q", data, data2)
- }
-
- // Fast forward and do another trim just before the 5 day cutoff.
- // Note that because of usedQuantum the cutoff is actually 5 days + 1 hour.
- // We used c.Get(id) just now, so 5 days later it should still be kept.
- // On the other hand almost a full day has gone by since we wrote dummyID(2)
- // and we haven't looked at it since, so 5 days later it should be gone.
- now += 5 * 86400
- checkTime(fmt.Sprintf("%x-a", dummyID(2)), start)
- c.Trim()
- if _, err := c.Get(id); err != nil {
- t.Fatal(err)
- }
- c.OutputFile(entry.OutputID)
- mtime3 := now
- if _, err := c.Get(dummyID(2)); err == nil { // haven't done a Get for this since original write above
- t.Fatalf("Trim did not remove dummyID(2)")
- }
-
- // The c.Get(id) refreshed id's mtime again.
- // Check that another 5 days later it is still not gone,
- // but check by using checkTime, which doesn't bring mtime forward.
- now += 5 * 86400
- c.Trim()
- checkTime(fmt.Sprintf("%x-a", id), mtime3)
- checkTime(fmt.Sprintf("%x-d", entry.OutputID), mtime3)
-
- // Half a day later Trim should still be a no-op, because there was a Trim recently.
- // Even though the entry for id is now old enough to be trimmed,
- // it gets a reprieve until the time comes for a new Trim scan.
- now += 86400 / 2
- c.Trim()
- checkTime(fmt.Sprintf("%x-a", id), mtime3)
- checkTime(fmt.Sprintf("%x-d", entry.OutputID), mtime3)
-
- // Another half a day later, Trim should actually run, and it should remove id.
- now += 86400/2 + 1
- c.Trim()
- if _, err := c.Get(dummyID(1)); err == nil {
- t.Fatal("Trim did not remove dummyID(1)")
- }
-}
projects / dotfiles / .git / blobdiff