clair/database/pgsql/lock_test.go
2019-02-28 15:46:31 -05:00

85 lines
2.4 KiB
Go

// Copyright 2016 clair 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 pgsql
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestLock(t *testing.T) {
datastore, tx := openSessionForTest(t, "Lock", true)
defer datastore.Close()
var l bool
// Create a first lock.
l, _, err := tx.AcquireLock("test1", "owner1", time.Minute)
assert.Nil(t, err)
assert.True(t, l)
tx = restartSession(t, datastore, tx, true)
// lock again by itself, the previous lock is not expired yet.
l, _, err = tx.AcquireLock("test1", "owner1", time.Minute)
assert.Nil(t, err)
assert.False(t, l)
tx = restartSession(t, datastore, tx, false)
// Try to renew the same lock with another owner.
l, _, err = tx.ExtendLock("test1", "owner2", time.Minute)
assert.Nil(t, err)
assert.False(t, l)
tx = restartSession(t, datastore, tx, false)
l, _, err = tx.AcquireLock("test1", "owner2", time.Minute)
assert.Nil(t, err)
assert.False(t, l)
tx = restartSession(t, datastore, tx, false)
// Renew the lock.
l, _, err = tx.ExtendLock("test1", "owner1", 2*time.Minute)
assert.Nil(t, err)
assert.True(t, l)
tx = restartSession(t, datastore, tx, true)
// Unlock and then relock by someone else.
err = tx.ReleaseLock("test1", "owner1")
assert.Nil(t, err)
tx = restartSession(t, datastore, tx, true)
l, _, err = tx.AcquireLock("test1", "owner2", time.Minute)
assert.Nil(t, err)
assert.True(t, l)
tx = restartSession(t, datastore, tx, true)
// Create a second lock which is actually already expired ...
l, _, err = tx.AcquireLock("test2", "owner1", -time.Minute)
assert.Nil(t, err)
assert.True(t, l)
tx = restartSession(t, datastore, tx, true)
// Take over the lock
l, _, err = tx.AcquireLock("test2", "owner2", time.Minute)
assert.Nil(t, err)
assert.True(t, l)
tx = restartSession(t, datastore, tx, true)
if !assert.Nil(t, tx.Rollback()) {
t.FailNow()
}
}