Cassandra\PagingIntegrationTest::testNextPageAsyncCaching PHP 메소드

    public function testNextPageAsyncCaching()
    {
        $results = array();
        $pageSize = 2;
        $options = array("page_size" => $pageSize);
        $statement = new SimpleStatement("SELECT * FROM {$this->tableNamePrefix}");
        // Get first page
        $rows = $this->session->execute($statement, new ExecutionOptions($options));
        $this->assertEquals($rows->count(), $pageSize);
        $values = self::convertRowsToArray($rows, "value");
        // Get next page asynchronously (verify that it's a different page)
        $nextRowsAsync = $rows->nextPageAsync()->get();
        $this->assertEquals($nextRowsAsync->count(), $pageSize);
        $nextValuesAsync = self::convertRowsToArray($nextRowsAsync, "value");
        $this->assertNotEquals($values, $nextValuesAsync);
        // Get next page asynchronously again (verify that it's the same)
        $nextRowsAgainAsync = $rows->nextPageAsync()->get();
        $this->assertEquals($nextRowsAgainAsync->count(), $pageSize);
        $nextValuesAgainAsync = self::convertRowsToArray($nextRowsAgainAsync, "value");
        $this->assertEquals($nextValuesAsync, $nextValuesAgainAsync);
        // Get the next page again synchonously (verify that it's the same)
        $nextRows = $rows->nextPage();
        $nextValues = self::convertRowsToArray($nextRows, "value");
        $this->assertEquals($nextRows->count(), $pageSize);
        $this->assertEquals($nextValuesAsync, $nextValues);
        // Get the next page's page asynchronously (verify that it's a different page)
        $lastRowsAsync = $nextRowsAsync->nextPageAsync()->get();
        $this->assertEquals($lastRowsAsync->count(), $pageSize);
        $lastValuesAsync = self::convertRowsToArray($lastRowsAsync, "value");
        $this->assertNotEquals($nextValuesAsync, $lastValuesAsync);
    }