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-rw-r--r--pkg/gate/gate_test.go192
1 files changed, 0 insertions, 192 deletions
diff --git a/pkg/gate/gate_test.go b/pkg/gate/gate_test.go
deleted file mode 100644
index 316015e06..000000000
--- a/pkg/gate/gate_test.go
+++ /dev/null
@@ -1,192 +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 gate_test
-
-import (
- "runtime"
- "testing"
- "time"
-
- "gvisor.dev/gvisor/pkg/gate"
- "gvisor.dev/gvisor/pkg/sync"
-)
-
-func TestBasicEnter(t *testing.T) {
- var g gate.Gate
-
- if !g.Enter() {
- t.Fatalf("Failed to enter when it should be allowed")
- }
-
- g.Leave()
-
- g.Close()
-
- if g.Enter() {
- t.Fatalf("Allowed to enter when it should fail")
- }
-}
-
-func enterFunc(t *testing.T, g *gate.Gate, enter, leave, reenter chan struct{}, done1, done2, done3 *sync.WaitGroup) {
- // Wait until instructed to enter.
- <-enter
- if !g.Enter() {
- t.Errorf("Failed to enter when it should be allowed")
- }
-
- done1.Done()
-
- // Wait until instructed to leave.
- <-leave
- g.Leave()
-
- done2.Done()
-
- // Wait until instructed to reenter.
- <-reenter
- if g.Enter() {
- t.Errorf("Allowed to enter when it should fail")
- }
- done3.Done()
-}
-
-func TestConcurrentEnter(t *testing.T) {
- var g gate.Gate
- var done1, done2, done3 sync.WaitGroup
-
- // Create 1000 worker goroutines.
- enter := make(chan struct{})
- leave := make(chan struct{})
- reenter := make(chan struct{})
- done1.Add(1000)
- done2.Add(1000)
- done3.Add(1000)
- for i := 0; i < 1000; i++ {
- go enterFunc(t, &g, enter, leave, reenter, &done1, &done2, &done3)
- }
-
- // Tell them all to enter, then leave.
- close(enter)
- done1.Wait()
-
- close(leave)
- done2.Wait()
-
- // Close the gate, then have the workers try to enter again.
- g.Close()
- close(reenter)
- done3.Wait()
-}
-
-func closeFunc(g *gate.Gate, done chan struct{}) {
- g.Close()
- close(done)
-}
-
-func TestCloseWaits(t *testing.T) {
- var g gate.Gate
-
- // Enter 10 times.
- for i := 0; i < 10; i++ {
- if !g.Enter() {
- t.Fatalf("Failed to enter when it should be allowed")
- }
- }
-
- // Launch closer. Check that it doesn't complete.
- done := make(chan struct{})
- go closeFunc(&g, done)
-
- for i := 0; i < 10; i++ {
- select {
- case <-done:
- t.Fatalf("Close function completed too soon")
- case <-time.After(100 * time.Millisecond):
- }
-
- g.Leave()
- }
-
- // Now the closer must complete.
- <-done
-}
-
-func TestMultipleSerialCloses(t *testing.T) {
- var g gate.Gate
-
- // Enter 10 times.
- for i := 0; i < 10; i++ {
- if !g.Enter() {
- t.Fatalf("Failed to enter when it should be allowed")
- }
- }
-
- // Launch closer. Check that it doesn't complete.
- done := make(chan struct{})
- go closeFunc(&g, done)
-
- for i := 0; i < 10; i++ {
- select {
- case <-done:
- t.Fatalf("Close function completed too soon")
- case <-time.After(100 * time.Millisecond):
- }
-
- g.Leave()
- }
-
- // Now the closer must complete.
- <-done
-
- // Close again should not block.
- done = make(chan struct{})
- go closeFunc(&g, done)
-
- select {
- case <-done:
- case <-time.After(2 * time.Second):
- t.Fatalf("Second Close is blocking")
- }
-}
-
-func worker(g *gate.Gate, done *sync.WaitGroup) {
- for {
- if !g.Enter() {
- break
- }
- // Golang before v1.14 doesn't preempt busyloops.
- runtime.Gosched()
- g.Leave()
- }
- done.Done()
-}
-
-func TestConcurrentAll(t *testing.T) {
- var g gate.Gate
- var done sync.WaitGroup
-
- // Launch 1000 goroutines to concurrently enter/leave.
- done.Add(1000)
- for i := 0; i < 1000; i++ {
- go worker(&g, &done)
- }
-
- // Wait for the goroutines to do some work, then close the gate.
- time.Sleep(2 * time.Second)
- g.Close()
-
- // Wait for all of them to complete.
- done.Wait()
-}