/**
  * Test the parsing of the curriculum JSON.
  */
 public function testCurriculumParsing()
 {
     $xml = file_get_contents(FIXTURES_DIR . '/curriculum-data/lp21_curriculum_obfuscated.xml');
     // Parse the data.
     $data = LP21Curriculum::parseCurriculumXml($xml);
     // Load the expected ASCII tree.
     $expectedAsciiTree = file_get_contents(FIXTURES_DIR . '/curriculum-data/lp21_curriculum_obfuscated.ascii');
     $this->assertEquals(trim($expectedAsciiTree), $data->curriculum->asciiDump(), "The ASCII representation of the curriculum tree is as expected.");
 }