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.
namespace core;
/**
* Test case for recordset_walk.
*
* @package core
* @category test
* @copyright 2015 David Monllao
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class recordset_walk_test extends \advanced_testcase {
public function setUp(): void {
parent::setUp();
$this->resetAfterTest();
}
public function test_no_data() {
global $DB;
$recordset = $DB->get_recordset('assign');
$walker = new \core\dml\recordset_walk($recordset, array($this, 'simple_callback'));
$this->assertFalse($walker->valid());
$count = 0;
foreach ($walker as $data) {
// No error here.
$count++;
}
$this->assertEquals(0, $count);
$walker->close();
}
public function test_simple_callback() {
global $DB;
$generator = $this->getDataGenerator()->get_plugin_generator('mod_assign');
$courses = array();
for ($i = 0; $i < 10; $i++) {
$courses[$i] = $generator->create_instance(array('course' => SITEID));
}
// Simple iteration.
$recordset = $DB->get_recordset('assign');
$walker = new \core\dml\recordset_walk($recordset, array($this, 'simple_callback'));
$count = 0;
foreach ($walker as $data) {
// Checking that the callback is being executed on each iteration.
$this->assertEquals($data->id . ' potatoes', $data->newfield);
$count++;
}
$this->assertEquals(10, $count);
// No exception if we double-close.
$walker->close();
}
public function test_extra_params_callback() {
global $DB;
$generator = $this->getDataGenerator()->get_plugin_generator('mod_assign');
$courses = array();
for ($i = 0; $i < 10; $i++) {
$courses[$i] = $generator->create_instance(array('course' => SITEID));
}
// Iteration with extra callback arguments.
$recordset = $DB->get_recordset('assign');
$walker = new \core\dml\recordset_walk(
$recordset,
array($this, 'extra_callback'),
array('brown' => 'onions')
);
$count = 0;
foreach ($walker as $data) {
// Checking that the callback is being executed on each
// iteration and the param is being passed.
$this->assertEquals('onions', $data->brown);
$count++;
}
$this->assertEquals(10, $count);
$walker->close();
}
/**
* Simple callback requiring 1 row fields.
*
* @param \stdClass $data
* @return \Traversable
*/
public function simple_callback($data, $nothing = 'notpassed') {
// Confirm nothing was passed.
$this->assertEquals('notpassed', $nothing);
$data->newfield = $data->id . ' potatoes';
return $data;
}
/**
* Callback requiring 1 row fields + other params.
*
* @param \stdClass $data
* @param mixed $extra
* @return \Traversable
*/
public function extra_callback($data, $extra) {
$data->brown = $extra['brown'];
return $data;
}
}