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package filewatcher
import (
"testing"
"time"
"github.com/hashicorp/go-hclog"
"github.com/pkg/errors"
"github.com/vercel/turbo/cli/internal/fs"
"gotest.tools/v3/assert"
)
func TestWaitForCookie(t *testing.T) {
logger := hclog.Default()
cookieDir := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
repoRoot := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
jar, err := NewCookieJar(cookieDir, 5*time.Second)
assert.NilError(t, err, "NewCookieJar")
watcher, err := GetPlatformSpecificBackend(logger)
assert.NilError(t, err, "NewWatcher")
fw := New(logger, repoRoot, watcher)
err = fw.Start()
assert.NilError(t, err, "Start")
fw.AddClient(jar)
err = fw.AddRoot(cookieDir)
assert.NilError(t, err, "Add")
err = jar.WaitForCookie()
assert.NilError(t, err, "failed to roundtrip cookie")
}
func TestWaitForCookieAfterClose(t *testing.T) {
logger := hclog.Default()
cookieDir := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
repoRoot := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
jar, err := NewCookieJar(cookieDir, 5*time.Second)
assert.NilError(t, err, "NewCookieJar")
watcher, err := GetPlatformSpecificBackend(logger)
assert.NilError(t, err, "NewWatcher")
fw := New(logger, repoRoot, watcher)
err = fw.Start()
assert.NilError(t, err, "Start")
fw.AddClient(jar)
err = fw.AddRoot(cookieDir)
assert.NilError(t, err, "Add")
err = fw.Close()
assert.NilError(t, err, "Close")
err = jar.WaitForCookie()
assert.ErrorIs(t, err, ErrCookieWatchingClosed)
}
func TestWaitForCookieTimeout(t *testing.T) {
logger := hclog.Default()
cookieDir := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
repoRoot := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
jar, err := NewCookieJar(cookieDir, 10*time.Millisecond)
assert.NilError(t, err, "NewCookieJar")
watcher, err := GetPlatformSpecificBackend(logger)
assert.NilError(t, err, "NewWatcher")
fw := New(logger, repoRoot, watcher)
err = fw.Start()
assert.NilError(t, err, "Start")
fw.AddClient(jar)
// NOTE: don't call fw.Add here so that no file event gets delivered
err = jar.WaitForCookie()
assert.ErrorIs(t, err, ErrCookieTimeout)
}
func TestWaitForCookieWithError(t *testing.T) {
logger := hclog.Default()
cookieDir := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
repoRoot := fs.AbsoluteSystemPathFromUpstream(t.TempDir())
jar, err := NewCookieJar(cookieDir, 10*time.Second)
assert.NilError(t, err, "NewCookieJar")
watcher, err := GetPlatformSpecificBackend(logger)
assert.NilError(t, err, "NewWatcher")
fw := New(logger, repoRoot, watcher)
err = fw.Start()
assert.NilError(t, err, "Start")
fw.AddClient(jar)
// NOTE: don't call fw.Add here so that no file event gets delivered
myErr := errors.New("an error")
ch := make(chan error)
go func() {
if err := jar.WaitForCookie(); err != nil {
ch <- err
}
close(ch)
}()
// wait for the cookie to be registered in the jar
for {
found := false
jar.mu.Lock()
if len(jar.cookies) == 1 {
found = true
}
jar.mu.Unlock()
if found {
break
}
<-time.After(10 * time.Millisecond)
}
jar.OnFileWatchError(myErr)
err, ok := <-ch
if !ok {
t.Error("expected to get an error from cookie watching")
}
assert.ErrorIs(t, err, myErr)
// ensure waiting for a new cookie still works.
// Add the filewatch to allow cookies work normally
err = fw.AddRoot(cookieDir)
assert.NilError(t, err, "Add")
err = jar.WaitForCookie()
assert.NilError(t, err, "WaitForCookie")
}
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