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<?php
/*
* Copyright (c) 2024 Hubzilla
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
require_once 'tests/fakes/fake_dba.php';
require_once 'include/dba/dba_transaction.php';
use \PHPUnit\Framework\TestCase;
use \Zotlabs\Tests\Fakes\FakeDba;
/**
* Test database transactions.
*
* This class subclass the base PHPUnit TestCase class, since we do _not_
* want a real database connection for these tests. We're testing functionality
* of the database adapter itself, so we choose to stub the underlying db driver
* to be able to assert that the adapter behaves as it should.
*/
class DbaTransactionTest extends TestCase {
private $pdo_stub;
public function setUp(): void {
$this->pdo_stub = $this->createStub(PDO::class);
}
/**
* Test that creating a DbaTransaction object initiates a database transaction.
*
* @SuppressWarnings(PHPMD.UnusedLocalVariable)
*/
public function test_transaction_initialized_on_construction(): void {
// Stub PDO::inTransaction()
// Expect that it's called once, and return false to simulate that no
// transactions are active.
$this->pdo_stub
->expects($this->once())
->method('inTransaction')
->willReturn(false);
// Stub PDO::beginTransaction to ensure that it is being called.
$this->pdo_stub
->expects($this->once())
->method('beginTransaction')
->willReturn(true);
$dba = new FakeDba($this->pdo_stub);
$transaction = new DbaTransaction($dba);
}
/**
* Test that a transaction is rolled back when the DbaTransaction object
* is destroyed.
*
* @SuppressWarnings(PHPMD.UnusedLocalVariable)
*/
public function test_uncommitted_transaction_is_rolled_back_on_destruction(): void {
// Stub PDO::inTransaction()
// Expect that it's called once, and return false to simulate that no
// transactions are active.
$this->pdo_stub
->expects($this->once())
->method('inTransaction')
->willReturn(false);
// Stub PDO::beginTransaction to ensure that it is being called.
$this->pdo_stub
->expects($this->once())
->method('beginTransaction')
->willReturn(true);
// Stub PDO::rollBack to make sure we test it is being called.
$this->pdo_stub
->expects($this->once())
->method('rollBack')
->willReturn(true);
$dba = new FakeDba($this->pdo_stub);
$transaction = new DbaTransaction($dba);
}
/**
* Test that a committed transaction is not rolled back when the
* DbaTransaction object goes out of scope.
*/
public function test_committed_transaction_is_not_rolled_back(): void {
// Stub PDO::inTransaction()
// Return false to simulate that no transaction is active when called.
$this->pdo_stub
->expects($this->once())
->method('inTransaction')
->willReturn(false);
// Stub PDO::beginTransaction to ensure that it is being called.
$this->pdo_stub
->expects($this->once())
->method('beginTransaction')
->willReturn(true);
// Stub PDO::rollBack to ensure it is _not_ called
$this->pdo_stub
->expects($this->never())
->method('rollBack');
// Stub PDO::commit to make the test check that it is being called
$this->pdo_stub
->expects($this->once())
->method('commit')
->willReturn(true);
$dba = new FakeDba($this->pdo_stub);
$transaction = new DbaTransaction($dba);
$transaction->commit();
}
/**
* Test that commiting a transaction more than once is a no-op.
*/
public function test_that_committing_an_already_committed_transaction_does_nothing(): void {
// Stub PDO::inTransaction()
// Return false to simulate that no transaction is active when called.
$this->pdo_stub
->expects($this->once())
->method('inTransaction')
->willReturn(false);
// Stub PDO::beginTransaction to ensure that it is being called.
$this->pdo_stub
->expects($this->once())
->method('beginTransaction')
->willReturn(true);
// Stub PDO::rollBack to ensure it is _not_ called
$this->pdo_stub
->expects($this->never())
->method('rollBack');
// Stub PDO::commit to make the test check that it is being called
$this->pdo_stub
->expects($this->once())
->method('commit')
->willReturn(true);
$dba = new FakeDba($this->pdo_stub);
$transaction = new DbaTransaction($dba);
$transaction->commit();
$transaction->commit();
}
/**
* Test simulating constructing a DbaTransaction object when a transaction
* is already active.
*
* This should _not_ initiate an actual DB transaction, not call the rollBack
* method on destruction.
*
* @SuppressWarnings(PHPMD.UnusedLocalVariable)
*/
public function test_that_nesting_a_transaction_does_not_create_a_new_transaction_in_db(): void {
// Stub PDO::inTransaction()
// We simulate that a transaction is already active, by returning true from
// this method.
$this->pdo_stub
->expects($this->once())
->method('inTransaction')
->willReturn(true);
// Stub PDO::beginTransaction
// Since a transaction is already active, we should _not_ initiate
// a new transaction when the DbaTransaction object is constructed.
$this->pdo_stub
->expects($this->never())
->method('beginTransaction');
// Stub PDO::rollBack to ensure it is _not_ called
$this->pdo_stub
->expects($this->never())
->method('rollBack');
$dba = new FakeDba($this->pdo_stub);
$transaction = new DbaTransaction($dba);
}
}
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