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<?php// This file is part of Moodle - http://moodle.org///// Moodle is free software: you can redistribute it and/or modify// it under the terms of the GNU General Public License as published by// the Free Software Foundation, either version 3 of the License, or// (at your option) any later version.//// Moodle is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the// GNU General Public License for more details.//// You should have received a copy of the GNU General Public License// along with Moodle. If not, see <http://www.gnu.org/licenses/>.namespace core;/*** Unit tests for the xhprof class.** @package core* @category test* @copyright 2019 Brendan Heywood <brendan@catalyst-au.net>* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later*/class xhprof_test extends \advanced_testcase {public static function setUpBeforeClass(): void {global $CFG;require_once($CFG->libdir . '/xhprof/xhprof_moodle.php');}/*** Data provider for string matches** @return array*/public static function profiling_string_matches_provider(): array {return [['/index.php', '/index.php', true],['/some/dir/index.php', '/index.php', false],['/course/view.php', '/course/view.php', true],['/view.php', '/course/view.php', false],['/mod/forum', '/mod/forum/*', false],['/mod/forum/', '/mod/forum/*', true],['/mod/forum/index.php', '/mod/forum/*', true],['/mod/forum/foo.php', '/mod/forum/*', true],['/mod/forum/view.php', '/mod/*/view.php', true],['/mod/one/two/view.php', '/mod/*/view.php', true],['/view.php', '*/view.php', true],['/mod/one/two/view.php', '*/view.php', true],['/foo.php', '/foo.php,/bar.php', true],['/bar.php', '/foo.php,/bar.php', true],['/foo/bar.php', "/foo.php,/bar.php", false],['/foo/bar.php', "/foo.php,*/bar.php", true],['/foo/bar.php', "/foo*.php,/bar.php", true],['/foo.php', "/foo.php\n/bar.php", true],['/bar.php', "/foo.php\n/bar.php", true],['/foo/bar.php', "/foo.php\n/bar.php", false],['/foo/bar.php', "/foo.php\n*/bar.php", true],['/foo/bar.php', "/foo*.php\n/bar.php", true],];}/*** Test the matching syntax** @covers ::profiling_string_matches* @dataProvider profiling_string_matches_provider* @param string $string* @param string $patterns* @param bool $expected*/public function test_profiling_string_matches($string, $patterns, $expected): void {$result = profiling_string_matches($string, $patterns);$this->assertSame($result, $expected);}/*** Data provider for both the topological sort and the data reduction tests.** @return array*/public static function run_data_provider(): array {// This data corresponds to the runs used as example @ MDL-79285.return ['sorted_case' => ['rundata' => array_flip(['A','A==>B','A==>C','A==>__Mustache4','B==>__Mustache1','__Mustache1==>__Mustache2','__Mustache4==>__Mustache2','__Mustache4==>E','E==>F','C==>F','__Mustache2==>F','__Mustache2==>D','D==>__Mustache3','__Mustache3==>F',]),'expectations' => ['topofirst' => 'A','topolast' => '__Mustache3==>F','topocount' => 14,'topoorder' => [// Before and after pairs to verify they are ordered.['before' => 'A==>C', 'after' => 'C==>F'],['before' => 'D==>__Mustache3', 'after' => '__Mustache3==>F'],],'reducecount' => 8,'reduceremoved' => [// Elements that will be removed by the reduction.'__Mustache1==>__Mustache2','__Mustache4==>__Mustache2','__Mustache2==>F','__Mustache2==>D','__Mustache2==>D','__Mustache3==>F',],],],'unsorted_case' => ['rundata' => array_flip(['A==>__Mustache4','__Mustache3==>F','A==>B','A==>C','B==>__Mustache1','__Mustache1==>__Mustache2','__Mustache4==>__Mustache2','__Mustache4==>E','E==>F','C==>F','__Mustache2==>F','__Mustache2==>D','D==>__Mustache3','A',]),'expectations' => ['topofirst' => 'A','topolast' => '__Mustache3==>F','topocount' => 14,'topoorder' => [// Before and after pairs to verify they are ordered.['before' => 'A==>C', 'after' => 'C==>F'],['before' => 'D==>__Mustache3', 'after' => '__Mustache3==>F'],],'reducecount' => 8,'reduceremoved' => [// Elements that will be removed by the reduction.'__Mustache1==>__Mustache2','__Mustache4==>__Mustache2','__Mustache2==>F','__Mustache2==>D','__Mustache2==>D','__Mustache3==>F',],],],];}/*** Test that topologically sorting the run data works as expected** @covers \moodle_xhprofrun::xhprof_topo_sort* @dataProvider run_data_provider** @param array $rundata The run data to be sorted.* @param array $expectations The expected results.*/public function test_xhprof_topo_sort(array $rundata, array $expectations): void {// Make sure all the examples in the provider are the same size.$this->assertSame($expectations['topocount'], count($rundata));// Make moodle_xhprofrun::xhprof_topo_sort() accessible.$reflection = new \ReflectionClass('\moodle_xhprofrun');$method = $reflection->getMethod('xhprof_topo_sort');// Sort the data.$result = $method->invokeArgs(new \moodle_xhprofrun(), [$rundata]);$this->assertIsArray($result);$this->assertSame($expectations['topocount'], count($result));// Convert the array to a list of keys, so we can assert values by position.$resultkeys = array_keys($result);// This is the elements that should be first.$this->assertSame($expectations['topofirst'], $resultkeys[0]);// This is the element that should be last.$this->assertSame($expectations['topolast'], $resultkeys[$expectations['topocount'] - 1]);// This relative ordering should be respected.foreach ($expectations['topoorder'] as $order) {// All the elements in the expectations should be present.$this->assertArrayHasKey($order['before'], $result);$this->assertArrayHasKey($order['after'], $result);// And they should be in the correct relative order.$this->assertGreaterThan(array_search($order['before'], $resultkeys),array_search($order['after'], $resultkeys));}// Final check, if we sort it again, nothing changes (it's already topologically sorted).$result2 = $method->invokeArgs(new \moodle_xhprofrun(), [$result]);$this->assertSame($result, $result2);}/*** Test that reducing the data complexity works as expected** @covers \moodle_xhprofrun::reduce_run_data* @dataProvider run_data_provider** @param array $rundata The run data to be reduced.* @param array $expectations The expected results.*/public function test_reduce_run_data(array $rundata, array $expectations): void {// Make sure that the expected keys that will be removed are present.foreach ($expectations['reduceremoved'] as $key) {$this->assertArrayHasKey($key, $rundata);}// Make moodle_xhprofrun::reduce_run_data() accessible.$reflection = new \ReflectionClass('\moodle_xhprofrun');$method = $reflection->getMethod('reduce_run_data');// Reduce the data.$result = $method->invokeArgs(new \moodle_xhprofrun(), [$rundata]);$this->assertIsArray($result);$this->assertSame($expectations['reducecount'], count($result));// These have been the removed elements.foreach ($expectations['reduceremoved'] as $key) {$this->assertArrayNotHasKey($key, $result);}// Final check, if we reduce it again, nothing changes (it's already reduced).$result2 = $method->invokeArgs(new \moodle_xhprofrun(), [$result]);$this->assertSame($result, $result2);}}