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. /** * Unit tests for Random allocation * * @package workshopallocation_random * @category phpunit * @copyright 2009 David Mudrak
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ defined('MOODLE_INTERNAL') || die(); // Include the code to test global $CFG; require_once($CFG->dirroot . '/mod/workshop/locallib.php'); require_once($CFG->dirroot . '/mod/workshop/allocation/random/lib.php'); class workshopallocation_random_testcase extends advanced_testcase { /** workshop instance emulation */ protected $workshop; /** allocator instance */ protected $allocator; protected function setUp() { parent::setUp(); $this->resetAfterTest(); $this->setAdminUser(); $course = $this->getDataGenerator()->create_course(); $workshop = $this->getDataGenerator()->create_module('workshop', array('course' => $course)); $cm = get_fast_modinfo($course)->instances['workshop'][$workshop->id]; $this->workshop = new workshop($workshop, $cm, $course); $this->allocator = new testable_workshop_random_allocator($this->workshop); } protected function tearDown() { $this->allocator = null; $this->workshop = null; parent::tearDown(); } public function test_self_allocation_empty_values() { // fixture setup & exercise SUT & verify $this->assertEquals(array(), $this->allocator->self_allocation()); } public function test_self_allocation_equal_user_groups() { // fixture setup $authors = array(0 => array_fill_keys(array(4, 6, 10), new stdclass())); $reviewers = array(0 => array_fill_keys(array(4, 6, 10), new stdclass())); // exercise SUT $newallocations = $this->allocator->self_allocation($authors, $reviewers); // verify $this->assertEquals(array(array(4 => 4), array(6 => 6), array(10 => 10)), $newallocations); } public function test_self_allocation_different_user_groups() { // fixture setup $authors = array(0 => array_fill_keys(array(1, 4, 5, 10, 13), new stdclass())); $reviewers = array(0 => array_fill_keys(array(4, 7, 10), new stdclass())); // exercise SUT $newallocations = $this->allocator->self_allocation($authors, $reviewers); // verify $this->assertEquals(array(array(4 => 4), array(10 => 10)), $newallocations); } public function test_self_allocation_skip_existing() { // fixture setup $authors = array(0 => array_fill_keys(array(3, 4, 10), new stdclass())); $reviewers = array(0 => array_fill_keys(array(3, 4, 10), new stdclass())); $assessments = array(23 => (object)array('authorid' => 3, 'reviewerid' => 3)); // exercise SUT $newallocations = $this->allocator->self_allocation($authors, $reviewers, $assessments); // verify $this->assertEquals(array(array(4 => 4), array(10 => 10)), $newallocations); } public function test_get_author_ids() { // fixture setup $newallocations = array(array(1 => 3), array(2 => 1), array(3 => 1)); // exercise SUT & verify $this->assertEquals(array(3, 1), $this->allocator->get_author_ids($newallocations)); } public function test_index_submissions_by_authors() { // fixture setup $submissions = array( 676 => (object)array('id' => 676, 'authorid' => 23), 121 => (object)array('id' => 121, 'authorid' => 56), ); // exercise SUT $submissions = $this->allocator->index_submissions_by_authors($submissions); // verify $this->assertEquals(array( 23 => (object)array('id' => 676, 'authorid' => 23), 56 => (object)array('id' => 121, 'authorid' => 56), ), $submissions); } /** * @expectedException moodle_exception */ public function test_index_submissions_by_authors_duplicate_author() { // fixture setup $submissions = array( 14 => (object)array('id' => 676, 'authorid' => 3), 87 => (object)array('id' => 121, 'authorid' => 3), ); // exercise SUT $submissions = $this->allocator->index_submissions_by_authors($submissions); } public function test_get_unique_allocations() { // fixture setup $newallocations = array(array(4 => 5), array(6 => 6), array(1 => 16), array(4 => 5), array(16 => 1)); // exercise SUT $newallocations = $this->allocator->get_unique_allocations($newallocations); // verify $this->assertEquals(array(array(4 => 5), array(6 => 6), array(1 => 16), array(16 => 1)), $newallocations); } public function test_get_unkept_assessments_no_keep_selfassessments() { // fixture setup $assessments = array( 23 => (object)array('authorid' => 3, 'reviewerid' => 3), 45 => (object)array('authorid' => 5, 'reviewerid' => 11), 12 => (object)array('authorid' => 6, 'reviewerid' => 3), ); $newallocations = array(array(4 => 5), array(11 => 5), array(1 => 16), array(4 => 5), array(16 => 1)); // exercise SUT $delassessments = $this->allocator->get_unkept_assessments($assessments, $newallocations, false); // verify // we want to keep $assessments[45] because it has been re-allocated $this->assertEquals(array(23, 12), $delassessments); } public function test_get_unkept_assessments_keep_selfassessments() { // fixture setup $assessments = array( 23 => (object)array('authorid' => 3, 'reviewerid' => 3), 45 => (object)array('authorid' => 5, 'reviewerid' => 11), 12 => (object)array('authorid' => 6, 'reviewerid' => 3), ); $newallocations = array(array(4 => 5), array(11 => 5), array(1 => 16), array(4 => 5), array(16 => 1)); // exercise SUT $delassessments = $this->allocator->get_unkept_assessments($assessments, $newallocations, true); // verify // we want to keep $assessments[45] because it has been re-allocated // we want to keep $assessments[23] because if is self assessment $this->assertEquals(array(12), $delassessments); } /** * Aggregates assessment info per author and per reviewer */ public function test_convert_assessments_to_links() { // fixture setup $assessments = array( 23 => (object)array('authorid' => 3, 'reviewerid' => 3), 45 => (object)array('authorid' => 5, 'reviewerid' => 11), 12 => (object)array('authorid' => 5, 'reviewerid' => 3), ); // exercise SUT list($authorlinks, $reviewerlinks) = $this->allocator->convert_assessments_to_links($assessments); // verify $this->assertEquals(array(3 => array(3), 5 => array(11, 3)), $authorlinks); $this->assertEquals(array(3 => array(3, 5), 11 => array(5)), $reviewerlinks); } /** * Trivial case */ public function test_convert_assessments_to_links_empty() { // fixture setup $assessments = array(); // exercise SUT list($authorlinks, $reviewerlinks) = $this->allocator->convert_assessments_to_links($assessments); // verify $this->assertEquals(array(), $authorlinks); $this->assertEquals(array(), $reviewerlinks); } /** * If there is a single element with the lowest workload, it should be chosen */ public function test_get_element_with_lowest_workload_deterministic() { // fixture setup $workload = array(4 => 6, 9 => 1, 10 => 2); // exercise SUT $chosen = $this->allocator->get_element_with_lowest_workload($workload); // verify $this->assertEquals(9, $chosen); } /** * If there are no elements available, must return false */ public function test_get_element_with_lowest_workload_impossible() { // fixture setup $workload = array(); // exercise SUT $chosen = $this->allocator->get_element_with_lowest_workload($workload); // verify $this->assertTrue($chosen === false); } /** * If there are several elements with the lowest workload, one of them should be chosen randomly */ public function test_get_element_with_lowest_workload_random() { // fixture setup $workload = array(4 => 6, 9 => 2, 10 => 2); // exercise SUT $elements = $this->allocator->get_element_with_lowest_workload($workload); // verify // in theory, this test can fail even if the function works well. However, the probability of getting // a row of a hundred same ids in this use case is 1/pow(2, 100) // also, this just tests that each of the two elements has been chosen at least once. this is not to // measure the quality or randomness of the algorithm $counts = array(4 => 0, 9 => 0, 10 => 0); for ($i = 0; $i < 100; $i++) { $chosen = $this->allocator->get_element_with_lowest_workload($workload); if (!in_array($chosen, array(4, 9, 10))) { $this->fail('Invalid element ' . var_export($chosen, true) . ' chosen'); break; } else { $counts[$this->allocator->get_element_with_lowest_workload($workload)]++; } } $this->assertTrue(($counts[9] > 0) && ($counts[10] > 0)); } /** * Floats should be rounded before they are compared * * This should test */ public function test_get_element_with_lowest_workload_random_floats() { // fixture setup $workload = array(1 => 1/13, 2 => 0.0769230769231); // should be considered as the same value // exercise SUT $elements = $this->allocator->get_element_with_lowest_workload($workload); // verify $counts = array(1 => 0, 2 => 0); for ($i = 0; $i < 100; $i++) { $chosen = $this->allocator->get_element_with_lowest_workload($workload); if (!in_array($chosen, array(1, 2))) { $this->fail('Invalid element ' . var_export($chosen, true) . ' chosen'); break; } else { $counts[$this->allocator->get_element_with_lowest_workload($workload)]++; } } $this->assertTrue(($counts[1] > 0) && ($counts[2] > 0)); } /** * Filter new assessments so they do not contain existing */ public function test_filter_current_assessments() { // fixture setup $newallocations = array(array(3 => 5), array(11 => 5), array(2 => 9), array(3 => 5)); $assessments = array( 23 => (object)array('authorid' => 3, 'reviewerid' => 3), 45 => (object)array('authorid' => 5, 'reviewerid' => 11), 12 => (object)array('authorid' => 5, 'reviewerid' => 3), ); // exercise SUT $this->allocator->filter_current_assessments($newallocations, $assessments); // verify $this->assertEquals(array_values($newallocations), array(array(2 => 9))); } } /** * Make protected methods we want to test public */ class testable_workshop_random_allocator extends workshop_random_allocator { public function self_allocation($authors=array(), $reviewers=array(), $assessments=array()) { return parent::self_allocation($authors, $reviewers, $assessments); } public function get_author_ids($newallocations) { return parent::get_author_ids($newallocations); } public function index_submissions_by_authors($submissions) { return parent::index_submissions_by_authors($submissions); } public function get_unique_allocations($newallocations) { return parent::get_unique_allocations($newallocations); } public function get_unkept_assessments($assessments, $newallocations, $keepselfassessments) { return parent::get_unkept_assessments($assessments, $newallocations, $keepselfassessments); } public function convert_assessments_to_links($assessments) { return parent::convert_assessments_to_links($assessments); } public function get_element_with_lowest_workload($workload) { return parent::get_element_with_lowest_workload($workload); } public function filter_current_assessments(&$newallocations, $assessments) { return parent::filter_current_assessments($newallocations, $assessments); } }