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FixtureHelper.php
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FixtureHelper.php
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<?php
declare(strict_types=1);
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 4.3.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\TestSuite\Fixture;
use Cake\Core\Configure;
use Cake\Core\Exception\CakeException;
use Cake\Database\Connection;
use Cake\Database\DriverFeatureEnum;
use Cake\Database\Schema\TableSchema;
use Cake\Datasource\ConnectionInterface;
use Cake\Datasource\ConnectionManager;
use Cake\Datasource\FixtureInterface;
use Cake\TestSuite\ConnectionHelper;
use Closure;
use PDOException;
use UnexpectedValueException;
/**
* Helper for managing fixtures.
*/
class FixtureHelper
{
/**
* Finds fixtures from their TestCase names such as 'core.Articles'.
*
* @param list<string> $fixtureNames Fixture names from test case
* @return array<\Cake\Datasource\FixtureInterface>
*/
public function loadFixtures(array $fixtureNames): array
{
static $cachedFixtures = [];
$fixtures = [];
foreach ($fixtureNames as $fixtureName) {
if (str_contains($fixtureName, '.')) {
[$type, $pathName] = explode('.', $fixtureName, 2);
$path = explode('/', $pathName);
$name = array_pop($path);
$additionalPath = implode('\\', $path);
if ($type === 'core') {
$baseNamespace = 'Cake';
} elseif ($type === 'app') {
$baseNamespace = Configure::read('App.namespace');
} elseif ($type === 'plugin') {
[$plugin, $name] = explode('.', $pathName);
$baseNamespace = str_replace('/', '\\', $plugin);
$additionalPath = null;
} else {
$baseNamespace = '';
$name = $fixtureName;
}
if (strpos($name, '/') > 0) {
$name = str_replace('/', '\\', $name);
}
$nameSegments = [
$baseNamespace,
'Test\Fixture',
$additionalPath,
$name . 'Fixture',
];
/** @var class-string<\Cake\Datasource\FixtureInterface> $className */
$className = implode('\\', array_filter($nameSegments));
} else {
/** @var class-string<\Cake\Datasource\FixtureInterface> $className */
$className = $fixtureName;
}
if (isset($fixtures[$className])) {
throw new UnexpectedValueException(sprintf('Found duplicate fixture `%s`.', $fixtureName));
}
if (!class_exists($className)) {
throw new UnexpectedValueException(sprintf('Could not find fixture `%s`.', $fixtureName));
}
if (!isset($cachedFixtures[$className])) {
$cachedFixtures[$className] = new $className();
}
$fixtures[$className] = $cachedFixtures[$className];
}
return $fixtures;
}
/**
* Runs the callback once per connection.
*
* The callback signature:
* ```
* function callback(ConnectionInterface $connection, array $fixtures)
* ```
*
* @param \Closure $callback Callback run per connection
* @param array<\Cake\Datasource\FixtureInterface> $fixtures Test fixtures
* @return void
*/
public function runPerConnection(Closure $callback, array $fixtures): void
{
$groups = [];
foreach ($fixtures as $fixture) {
$groups[$fixture->connection()][] = $fixture;
}
foreach ($groups as $connectionName => $fixtures) {
$callback(ConnectionManager::get($connectionName), $fixtures);
}
}
/**
* Inserts fixture data.
*
* @param array<\Cake\Datasource\FixtureInterface> $fixtures Test fixtures
* @return void
* @internal
*/
public function insert(array $fixtures): void
{
$this->runPerConnection(function (ConnectionInterface $connection, array $groupFixtures): void {
if ($connection instanceof Connection) {
$sortedFixtures = $this->sortByConstraint($connection, $groupFixtures);
if ($sortedFixtures) {
$this->insertConnection($connection, $sortedFixtures);
} else {
$helper = new ConnectionHelper();
$helper->runWithoutConstraints(
$connection,
fn (Connection $connection) => $this->insertConnection($connection, $groupFixtures)
);
}
} else {
$this->insertConnection($connection, $groupFixtures);
}
}, $fixtures);
}
/**
* Inserts all fixtures for a connection and provides friendly errors for bad data.
*
* @param \Cake\Datasource\ConnectionInterface $connection Fixture connection
* @param array<\Cake\Datasource\FixtureInterface> $fixtures Connection fixtures
* @return void
*/
protected function insertConnection(ConnectionInterface $connection, array $fixtures): void
{
foreach ($fixtures as $fixture) {
try {
$fixture->insert($connection);
} catch (PDOException $exception) {
$message = sprintf(
'Unable to insert rows for table `%s`.'
. " Fixture records might have invalid data or unknown constraints.\n%s",
$fixture->sourceName(),
$exception->getMessage()
);
throw new CakeException($message);
}
}
}
/**
* Truncates fixture tables.
*
* @param array<\Cake\Datasource\FixtureInterface> $fixtures Test fixtures
* @return void
* @internal
*/
public function truncate(array $fixtures): void
{
$this->runPerConnection(function (ConnectionInterface $connection, array $groupFixtures): void {
if ($connection instanceof Connection) {
$sortedFixtures = null;
if ($connection->getDriver()->supports(DriverFeatureEnum::TRUNCATE_WITH_CONSTRAINTS)) {
$sortedFixtures = $this->sortByConstraint($connection, $groupFixtures);
}
if ($sortedFixtures !== null) {
$this->truncateConnection($connection, array_reverse($sortedFixtures));
} else {
$helper = new ConnectionHelper();
$helper->runWithoutConstraints(
$connection,
fn (Connection $connection) => $this->truncateConnection($connection, $groupFixtures)
);
}
} else {
$this->truncateConnection($connection, $groupFixtures);
}
}, $fixtures);
}
/**
* Truncates all fixtures for a connection and provides friendly errors for bad data.
*
* @param \Cake\Datasource\ConnectionInterface $connection Fixture connection
* @param array<\Cake\Datasource\FixtureInterface> $fixtures Connection fixtures
* @return void
*/
protected function truncateConnection(ConnectionInterface $connection, array $fixtures): void
{
foreach ($fixtures as $fixture) {
try {
$fixture->truncate($connection);
} catch (PDOException $exception) {
$message = sprintf(
'Unable to truncate table `%s`.'
. " Fixture records might have invalid data or unknown contraints.\n%s",
$fixture->sourceName(),
$exception->getMessage()
);
throw new CakeException($message);
}
}
}
/**
* Sort fixtures with foreign constraints last if possible, otherwise returns null.
*
* @param \Cake\Database\Connection $connection Database connection
* @param array<\Cake\Datasource\FixtureInterface> $fixtures Database fixtures
* @return array|null
*/
protected function sortByConstraint(Connection $connection, array $fixtures): ?array
{
$constrained = [];
$unconstrained = [];
foreach ($fixtures as $fixture) {
$references = $this->getForeignReferences($connection, $fixture);
if ($references) {
$constrained[$fixture->sourceName()] = ['references' => $references, 'fixture' => $fixture];
} else {
$unconstrained[] = $fixture;
}
}
// Check if any fixtures reference another fixture with constrants
// If they do, then there might be cross-dependencies which we don't support sorting
foreach ($constrained as ['references' => $references]) {
foreach ($references as $reference) {
if (isset($constrained[$reference])) {
return null;
}
}
}
return array_merge($unconstrained, array_column($constrained, 'fixture'));
}
/**
* Gets array of foreign references for fixtures table.
*
* @param \Cake\Database\Connection $connection Database connection
* @param \Cake\Datasource\FixtureInterface $fixture Database fixture
* @return array<string>
*/
protected function getForeignReferences(Connection $connection, FixtureInterface $fixture): array
{
/** @var array<string, \Cake\Database\Schema\TableSchemaInterface> $schemas */
static $schemas = [];
// Get and cache off the schema since TestFixture generates a fake schema based on $fields
$tableName = $fixture->sourceName();
if (!isset($schemas[$tableName])) {
$schemas[$tableName] = $connection->getSchemaCollection()->describe($tableName);
}
$schema = $schemas[$tableName];
$references = [];
foreach ($schema->constraints() as $constraintName) {
$constraint = $schema->getConstraint($constraintName);
if ($constraint && $constraint['type'] === TableSchema::CONSTRAINT_FOREIGN) {
$references[] = $constraint['references'][0];
}
}
return $references;
}
}