clair/database/pgsql/lock_test.go

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