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backend_windows_test.go
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backend_windows_test.go
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//go:build windows
// +build windows
package fsnotify
import (
"fmt"
"path/filepath"
"strings"
"testing"
)
func TestRemoveState(t *testing.T) {
// TODO: the Windows backend is too confusing; needs some serious attention.
return
var (
tmp = t.TempDir()
dir = filepath.Join(tmp, "dir")
file = filepath.Join(dir, "file")
)
mkdir(t, dir)
touch(t, file)
w := newWatcher(t, tmp)
addWatch(t, w, tmp)
addWatch(t, w, file)
check := func(want int) {
t.Helper()
if len(w.watches) != want {
var d []string
for k, v := range w.watches {
d = append(d, fmt.Sprintf("%#v = %#v", k, v))
}
t.Errorf("unexpected number of entries in w.watches (have %d, want %d):\n%v",
len(w.watches), want, strings.Join(d, "\n"))
}
}
check(2)
if err := w.Remove(file); err != nil {
t.Fatal(err)
}
check(1)
if err := w.Remove(tmp); err != nil {
t.Fatal(err)
}
check(0)
}
// TODO: write test which makes sure the buffer size is set correctly.
func TestWindowsWithBufferSize(t *testing.T) {
getWatch := func(opts ...addOpt) (*watch, error) {
w, err := NewWatcher()
if err != nil {
return nil, err
}
if err := w.AddWith(t.TempDir(), opts...); err != nil {
return nil, err
}
// Hackery to get first (and only) map value.
var v indexMap
for _, v = range w.watches {
}
if len(v) != 1 {
t.Fatal()
}
var watch *watch
for _, watch = range v {
}
return watch, nil
}
check := func(w *watch, want int) {
if len(w.buf) != want || cap(w.buf) != want {
t.Fatalf("want = %d; len = %d; cap = %d", want, len(w.buf), cap(w.buf))
}
}
if w, err := getWatch(); err != nil {
t.Fatal(err)
} else {
check(w, 65536)
}
if w, err := getWatch(WithBufferSize(4096)); err != nil {
t.Fatal(err)
} else {
check(w, 4096)
}
if _, err := getWatch(WithBufferSize(1024)); err == nil || !strings.Contains(err.Error(), "cannot be smaller") {
t.Fatal(err)
}
}