RegressionTest.php

<?php

namespace Drupal\KernelTests\Core\Database;


/**
 * Regression tests cases for the database layer.
 *
 * @group Database
 */
class RegressionTest extends DatabaseTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'node',
        'user',
    ];
    
    /**
     * Ensures that non-ASCII UTF-8 data is stored in the database properly.
     */
    public function testRegression_310447() {
        // That's a 255 character UTF-8 string.
        $job = str_repeat("é", 255);
        $this->connection
            ->insert('test')
            ->fields([
            'name' => $this->randomMachineName(),
            'age' => 20,
            'job' => $job,
        ])
            ->execute();
        $from_database = $this->connection
            ->query('SELECT [job] FROM {test} WHERE [job] = :job', [
            ':job' => $job,
        ])
            ->fetchField();
        $this->assertSame($job, $from_database, 'The database handles UTF-8 characters cleanly.');
    }
    
    /**
     * Tests the Schema::tableExists() method.
     */
    public function testDBTableExists() {
        $this->assertTrue($this->connection
            ->schema()
            ->tableExists('test'), 'Returns true for existent table.');
        $this->assertFalse($this->connection
            ->schema()
            ->tableExists('no_such_table'), 'Returns false for nonexistent table.');
    }
    
    /**
     * Tests the \Drupal\Core\Database\Schema::fieldExists() method.
     */
    public function testDBFieldExists() {
        $schema = $this->connection
            ->schema();
        $this->assertTrue($schema->fieldExists('test', 'name'), 'Returns true for existent column.');
        $this->assertFalse($schema->fieldExists('test', 'no_such_column'), 'Returns false for nonexistent column.');
    }
    
    /**
     * Tests the Schema::indexExists() method.
     */
    public function testDBIndexExists() {
        $this->assertTrue($this->connection
            ->schema()
            ->indexExists('test', 'ages'), 'Returns true for existent index.');
        $this->assertFalse($this->connection
            ->schema()
            ->indexExists('test', 'no_such_index'), 'Returns false for nonexistent index.');
    }

}