129 lines
3.8 KiB
PHP
129 lines
3.8 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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use Behat\Mink\Exception\DriverException;
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use Behat\Mink\Exception\ExpectationException;
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require_once(__DIR__ . '/../../../../lib/behat/behat_base.php');
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require_once(__DIR__ . '/classes/performance_measure.php');
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/**
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* Behat step definitions to measure performance.
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*/
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class behat_performance extends behat_base {
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/**
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* @var array
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*/
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private $measures = [];
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/**
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* Start measuring performance.
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*
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* @When /^I start measuring "([^"]+)"$/
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*/
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public function i_start_measuring(string $name) {
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$this->measures[$name] = new performance_measure($name, $this->getSession()->getDriver());
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$this->measures[$name]->start();
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}
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/**
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* Stop measuring performance.
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*
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* @When /^I stop measuring "([^"]+)"$/
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*/
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public function i_stop_measuring(string $name) {
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$this->get_performance_measure($name)->end();
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}
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/**
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* Assert how long a performance measure took.
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*
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* @Then /^"([^"]+)" should have taken (less than|more than|exactly) (\d+(?:\.\d+)? (?:seconds|milliseconds))$/
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*/
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public function timing_should_have_taken(string $measure, Closure $comparison, float $expectedtime) {
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$measuretiming = $this->get_performance_measure($measure);
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if (!call_user_func($comparison, $measuretiming->duration, $expectedtime)) {
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throw new ExpectationException(
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"Expected duration for '$measure' failed! (took {$measuretiming->duration}ms)",
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$this->getSession()->getDriver()
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);
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}
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$measuretiming->store();
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}
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/**
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* Parse time.
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*
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* @Transform /^\d+(?:\.\d+)? (?:seconds|milliseconds)$/
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* @param string $text Time string.
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* @return float
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*/
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public function parse_time(string $text): float {
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$spaceindex = strpos($text, ' ');
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$value = floatval(substr($text, 0, $spaceindex));
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if (substr($text, $spaceindex + 1) == 'seconds') {
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$value *= 1000;
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}
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return $value;
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}
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/**
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* Parse a comparison function.
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*
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* @Transform /^less than|more than|exactly$/
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* @param string $text Comparison string.
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* @return Closure
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*/
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public function parse_comparison(string $text): Closure {
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switch ($text) {
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case 'less than':
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return function ($a, $b) {
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return $a < $b;
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};
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case 'more than':
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return function ($a, $b) {
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return $a > $b;
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};
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case 'exactly':
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return function ($a, $b) {
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return $a === $b;
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};
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default:
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break;
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}
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}
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/**
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* Get performance measure by name.
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*
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* @param string $name Performance measure name.
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* @return performance_measure Performance measure.
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*/
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private function get_performance_measure(string $name): performance_measure {
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if (!isset($this->measures[$name])) {
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throw new DriverException("'$name' performance measure does not exist.");
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}
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return $this->measures[$name];
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}
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}
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