public function test_module_extends_navigation()
{
$node = new exposed_global_navigation();
// Create an initial tree structure to work with.
$cat1 = $node->add('category 1', null, navigation_node::TYPE_CATEGORY, null, 'cat1');
$cat2 = $node->add('category 2', null, navigation_node::TYPE_CATEGORY, null, 'cat2');
$cat3 = $node->add('category 3', null, navigation_node::TYPE_CATEGORY, null, 'cat3');
$sub1 = $cat2->add('sub category 1', null, navigation_node::TYPE_CATEGORY, null, 'sub1');
$sub2 = $cat2->add('sub category 2', null, navigation_node::TYPE_CATEGORY, null, 'sub2');
$sub3 = $cat2->add('sub category 3', null, navigation_node::TYPE_CATEGORY, null, 'sub3');
$course1 = $sub2->add('course 1', null, navigation_node::TYPE_COURSE, null, 'course1');
$course2 = $sub2->add('course 2', null, navigation_node::TYPE_COURSE, null, 'course2');
$course3 = $sub2->add('course 3', null, navigation_node::TYPE_COURSE, null, 'course3');
$section1 = $course2->add('section 1', null, navigation_node::TYPE_SECTION, null, 'sec1');
$section2 = $course2->add('section 2', null, navigation_node::TYPE_SECTION, null, 'sec2');
$section3 = $course2->add('section 3', null, navigation_node::TYPE_SECTION, null, 'sec3');
$act1 = $section2->add('activity 1', null, navigation_node::TYPE_ACTIVITY, null, 'act1');
$act2 = $section2->add('activity 2', null, navigation_node::TYPE_ACTIVITY, null, 'act2');
$act3 = $section2->add('activity 3', null, navigation_node::TYPE_ACTIVITY, null, 'act3');
$res1 = $section2->add('resource 1', null, navigation_node::TYPE_RESOURCE, null, 'res1');
$res2 = $section2->add('resource 2', null, navigation_node::TYPE_RESOURCE, null, 'res2');
$res3 = $section2->add('resource 3', null, navigation_node::TYPE_RESOURCE, null, 'res3');
$this->assertTrue($node->exposed_module_extends_navigation('data'));
$this->assertFalse($node->exposed_module_extends_navigation('test1'));
}
