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Diffstat (limited to 'pkg/waiter/waiter_test.go')
-rw-r--r--pkg/waiter/waiter_test.go198
1 files changed, 0 insertions, 198 deletions
diff --git a/pkg/waiter/waiter_test.go b/pkg/waiter/waiter_test.go
deleted file mode 100644
index 6928f28b4..000000000
--- a/pkg/waiter/waiter_test.go
+++ /dev/null
@@ -1,198 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package waiter
-
-import (
- "sync/atomic"
- "testing"
-)
-
-type callbackStub struct {
- f func(e *Entry, m EventMask)
-}
-
-// Callback implements EntryCallback.Callback.
-func (c *callbackStub) Callback(e *Entry, m EventMask) {
- c.f(e, m)
-}
-
-func TestEmptyQueue(t *testing.T) {
- var q Queue
-
- // Notify the zero-value of a queue.
- q.Notify(EventIn)
-
- // Register then unregister a waiter, then notify the queue.
- cnt := 0
- e := Entry{Callback: &callbackStub{func(*Entry, EventMask) { cnt++ }}}
- q.EventRegister(&e, EventIn)
- q.EventUnregister(&e)
- q.Notify(EventIn)
- if cnt != 0 {
- t.Errorf("Callback was called when it shouldn't have been")
- }
-}
-
-func TestMask(t *testing.T) {
- // Register a waiter.
- var q Queue
- var cnt int
- e := Entry{Callback: &callbackStub{func(*Entry, EventMask) { cnt++ }}}
- q.EventRegister(&e, EventIn|EventErr)
-
- // Notify with an overlapping mask.
- cnt = 0
- q.Notify(EventIn | EventOut)
- if cnt != 1 {
- t.Errorf("Callback wasn't called when it should have been")
- }
-
- // Notify with a subset mask.
- cnt = 0
- q.Notify(EventIn)
- if cnt != 1 {
- t.Errorf("Callback wasn't called when it should have been")
- }
-
- // Notify with a superset mask.
- cnt = 0
- q.Notify(EventIn | EventErr | EventOut)
- if cnt != 1 {
- t.Errorf("Callback wasn't called when it should have been")
- }
-
- // Notify with the exact same mask.
- cnt = 0
- q.Notify(EventIn | EventErr)
- if cnt != 1 {
- t.Errorf("Callback wasn't called when it should have been")
- }
-
- // Notify with a disjoint mask.
- cnt = 0
- q.Notify(EventOut | EventHUp)
- if cnt != 0 {
- t.Errorf("Callback was called when it shouldn't have been")
- }
-}
-
-func TestConcurrentRegistration(t *testing.T) {
- var q Queue
- var cnt int
- const concurrency = 1000
-
- ch1 := make(chan struct{})
- ch2 := make(chan struct{})
- ch3 := make(chan struct{})
-
- // Create goroutines that will all register/unregister concurrently.
- for i := 0; i < concurrency; i++ {
- go func() {
- var e Entry
- e.Callback = &callbackStub{func(entry *Entry, mask EventMask) {
- cnt++
- if entry != &e {
- t.Errorf("entry = %p, want %p", entry, &e)
- }
- if mask != EventIn {
- t.Errorf("mask = %#x want %#x", mask, EventIn)
- }
- }}
-
- // Wait for notification, then register.
- <-ch1
- q.EventRegister(&e, EventIn|EventErr)
-
- // Tell main goroutine that we're done registering.
- ch2 <- struct{}{}
-
- // Wait for notification, then unregister.
- <-ch3
- q.EventUnregister(&e)
-
- // Tell main goroutine that we're done unregistering.
- ch2 <- struct{}{}
- }()
- }
-
- // Let the goroutines register.
- close(ch1)
- for i := 0; i < concurrency; i++ {
- <-ch2
- }
-
- // Issue a notification.
- q.Notify(EventIn)
- if cnt != concurrency {
- t.Errorf("cnt = %d, want %d", cnt, concurrency)
- }
-
- // Let the goroutine unregister.
- close(ch3)
- for i := 0; i < concurrency; i++ {
- <-ch2
- }
-
- // Issue a notification.
- q.Notify(EventIn)
- if cnt != concurrency {
- t.Errorf("cnt = %d, want %d", cnt, concurrency)
- }
-}
-
-func TestConcurrentNotification(t *testing.T) {
- var q Queue
- var cnt int32
- const concurrency = 1000
- const waiterCount = 1000
-
- // Register waiters.
- for i := 0; i < waiterCount; i++ {
- var e Entry
- e.Callback = &callbackStub{func(entry *Entry, mask EventMask) {
- atomic.AddInt32(&cnt, 1)
- if entry != &e {
- t.Errorf("entry = %p, want %p", entry, &e)
- }
- if mask != EventIn {
- t.Errorf("mask = %#x want %#x", mask, EventIn)
- }
- }}
-
- q.EventRegister(&e, EventIn|EventErr)
- }
-
- // Launch notifiers.
- ch1 := make(chan struct{})
- ch2 := make(chan struct{})
- for i := 0; i < concurrency; i++ {
- go func() {
- <-ch1
- q.Notify(EventIn)
- ch2 <- struct{}{}
- }()
- }
-
- // Let notifiers go.
- close(ch1)
- for i := 0; i < concurrency; i++ {
- <-ch2
- }
-
- // Check the count.
- if cnt != concurrency*waiterCount {
- t.Errorf("cnt = %d, want %d", cnt, concurrency*waiterCount)
- }
-}