75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
/*
|
|
Copyright IBM Corp. All Rights Reserved.
|
|
|
|
SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
package semaphore_test
|
|
|
|
import (
|
|
"context"
|
|
"testing"
|
|
|
|
"github.com/hyperledger/fabric/common/semaphore"
|
|
. "github.com/onsi/gomega"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestNewSemaphorePanic(t *testing.T) {
|
|
require.PanicsWithValue(t, "permits must be greater than 0", func() { semaphore.New(0) })
|
|
}
|
|
|
|
func TestSemaphoreAcquireBlocking(t *testing.T) {
|
|
gt := NewGomegaWithT(t)
|
|
|
|
sema := semaphore.New(5)
|
|
for i := 0; i < 5; i++ {
|
|
err := sema.Acquire(context.Background())
|
|
gt.Expect(err).NotTo(HaveOccurred())
|
|
}
|
|
|
|
done := make(chan struct{})
|
|
go func() {
|
|
err := sema.Acquire(context.Background())
|
|
gt.Expect(err).NotTo(HaveOccurred())
|
|
|
|
close(done)
|
|
sema.Release()
|
|
}()
|
|
|
|
gt.Consistently(done).ShouldNot(BeClosed())
|
|
sema.Release()
|
|
gt.Eventually(done).Should(BeClosed())
|
|
}
|
|
|
|
func TestSemaphoreAcquireContextError(t *testing.T) {
|
|
gt := NewGomegaWithT(t)
|
|
|
|
sema := semaphore.New(1)
|
|
err := sema.Acquire(context.Background())
|
|
gt.Expect(err).NotTo(HaveOccurred())
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
cancel()
|
|
errCh := make(chan error, 1)
|
|
go func() { errCh <- sema.Acquire(ctx) }()
|
|
|
|
gt.Eventually(errCh).Should(Receive(Equal(context.Canceled)))
|
|
}
|
|
|
|
func TestSemaphoreTryAcquireBufferFull(t *testing.T) {
|
|
gt := NewGomegaWithT(t)
|
|
|
|
sema := semaphore.New(5)
|
|
for i := 0; i < 5; i++ {
|
|
gt.Expect(t, true, sema.TryAcquire())
|
|
}
|
|
|
|
gt.Expect(t, false, sema.TryAcquire())
|
|
}
|
|
|
|
func TestSemaphoreReleaseTooMany(t *testing.T) {
|
|
sema := semaphore.New(1)
|
|
require.PanicsWithValue(t, "semaphore buffer is empty", func() { sema.Release() })
|
|
}
|