function SelectComplexTest::testGroupBy

Tests GROUP BY clauses.

File

core/tests/Drupal/KernelTests/Core/Database/SelectComplexTest.php, line 77

Class

SelectComplexTest

Tests the Select query builder with more complex queries.

Namespace

Code

public function testGroupBy() {
    $query = $this->connection
        ->select('test_task', 't');
    $count_field = $query->addExpression('COUNT(task)', 'num');
    $task_field = $query->addField('t', 'task');
    $query->orderBy($count_field);
    $query->groupBy($task_field);
    $result = $query->execute();
    $num_records = 0;
    $last_count = 0;
    $records = [];
    foreach ($result as $record) {
        $num_records++;
        $this->assertTrue($record->{$count_field} >= $last_count, 'Results returned in correct order.');
        $last_count = $record->{$count_field};
        $records[$record->{$task_field}] = $record->{$count_field};
    }
    $correct_results = [
        'eat' => 1,
        'sleep' => 2,
        'code' => 1,
        'found new band' => 1,
        'perform at superbowl' => 1,
    ];
    foreach ($correct_results as $task => $count) {
        $this->assertEqual($records[$task], $count, new FormattableMarkup("Correct number of '@task' records found.", [
            '@task' => $task,
        ]));
    }
    $this->assertEqual($num_records, 6, 'Returned the correct number of total rows.');
}