<?php

/**
 * @file
 * Tests for ParserCSV library.
 */

/**
 * Test aggregating a feed as node items.
 *
 * Using DrupalWebTestCase as DrupalUnitTestCase is broken in SimpleTest 2.8.
 * Not inheriting from Feeds base class as ParserCSV should be moved out of
 * Feeds at some time.
 */
class ParserCSVTest extends DrupalWebTestCase  {

  public static function getInfo() {
    return array(
      'name' => 'CSV Parser unit tests',
      'description' => 'Base level test for Feeds\' built in CSV parser.',
      'group' => 'Feeds',
    );
  }

  /**
   * Test method.
   */
  public function test() {
    drupal_load('module', 'feeds');
    feeds_include_library('ParserCSV.inc', 'ParserCSV');

    $this->_testSimple();
    $this->_testBatching();
  }

  /**
   * Simple test of parsing functionality.
   */
  protected function _testSimple() {
    $file =  $this->absolutePath() .'/tests/feeds/nodes.csv';
    include $this->absolutePath() .'/tests/feeds/nodes.csv.php';

    $iterator = new ParserCSVIterator($file);
    $parser = new ParserCSV();
    $parser->setDelimiter(',');
    $rows = $parser->parse($iterator);
    $this->assertFalse($parser->lastLinePos(), t('Parser reports all lines parsed'));
    $this->assertEqual(md5(serialize($rows)), md5(serialize($control_result)), t('Parsed result matches control result.'));
  }

  /**
   * Test batching.
   */
  protected function _testBatching() {
    $file =  $this->absolutePath() .'/tests/feeds/nodes.csv';
    include $this->absolutePath() .'/tests/feeds/nodes.csv.php';

    // Set up parser with 2 lines to parse per call.
    $iterator = new ParserCSVIterator($file);
    $parser = new ParserCSV();
    $parser->setDelimiter(',');
    $parser->setLineLimit(2);
    $rows = array();
    $pos = 0;

    // Call parser until all lines are parsed, then compare to control result.
    do {
      $parser->setStartByte($pos);
      $rows = array_merge($rows, $parser->parse($iterator));
      $pos = $parser->lastLinePos();
      $this->assertTrue($parser->lastLinePos() || count($rows) == 10, t('Parser reports line limit correctly'));
    }
    while ($pos = $parser->lastLinePos());

    $this->assertEqual(md5(serialize($rows)), md5(serialize($control_result)), t('Parsed result matches control result.'));
  }

  /**
   * Absolute path to feeds.
   */
  public function absolutePath() {
    return realpath(getcwd()) .'/'. drupal_get_path('module', 'feeds');
  }
}