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MDL-63399 behat: implement a new download step
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,188 @@ | ||
| <?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/>. | ||
|
|
||
| /** | ||
| * Steps definitions to verify a downloaded file. | ||
| * | ||
| * @package core | ||
| * @category test | ||
| * @copyright 2023 Simey Lameze <[email protected]> | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
|
|
||
| use Behat\Gherkin\Node\TableNode; | ||
| use Behat\Mink\Exception\ExpectationException; | ||
|
|
||
| require_once(__DIR__ . '/../../behat/behat_base.php'); | ||
|
|
||
| /** | ||
| * Steps definitions to verify a downloaded file. | ||
| * | ||
| * @package core | ||
| * @category test | ||
| * @copyright 2023 Simey Lameze <[email protected]> | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
| class behat_download extends behat_base { | ||
|
|
||
| /** | ||
| * Downloads the file from a link on the page and checks the size is in a given range. | ||
| * | ||
| * @Then /^following "(?P<link_string>[^"]*)" should download a "(?P<format_string>[^"]*)" file that:$/ | ||
| * | Contains | abc | | ||
| * | Does not contain | xyz | | ||
| */ | ||
| public function following_should_download_a_file_that(string $link, string $format, TableNode $table): void { | ||
|
|
||
| // Find the link. | ||
| $linknode = $this->find_link($link); | ||
| $this->ensure_node_is_visible($linknode); | ||
|
|
||
| // Get the href and check it. | ||
| $url = $linknode->getAttribute('href'); | ||
| if (!$url) { | ||
| throw new ExpectationException( | ||
| 'Download link does not have href attribute', | ||
| $this->getSession(), | ||
| ); | ||
| } | ||
| if (!preg_match('~^https?://~', $url)) { | ||
| throw new ExpectationException( | ||
| "Download link not an absolute URL: {$url}", | ||
| $this->getSession(), | ||
| ); | ||
| } | ||
|
|
||
| $behatgeneralcontext = behat_context_helper::get('behat_general'); | ||
| $exception = new ExpectationException( | ||
| "Error while downloading data from {$link}", | ||
| $this->getSession(), | ||
| ); | ||
|
|
||
| // It will stop spinning once file is downloaded or time out. | ||
| $filecontent = $this->spin( | ||
| fn($context, $link) => $behatgeneralcontext->download_file_from_link($link), | ||
| $link, | ||
| behat_base::get_extended_timeout(), | ||
| $exception | ||
| ); | ||
|
|
||
| if (!$rows = $table->getRows()) { | ||
| // Nothing further to verify. | ||
| return; | ||
| } | ||
|
|
||
| // TODO: | ||
| // 2) Assert multiple files in the zip archive. | ||
| // 3) Validate txt, gift and png files. | ||
| // 4) Validate "Does not contain." | ||
| // 5) Validate "Contains" with multiple strings. | ||
| // 6) Validate "Does not contain PHP errors" -> (which can be based on look_for_exceptions from lib/behat/classes/behat_session_trait.php | ||
| $this->validate_mime_type($filecontent, $format); | ||
|
|
||
| $assertmethod = 'assert_file_type_' . strtolower($format); | ||
| foreach ($rows as $row) { | ||
| $assertion = strtolower(trim($row[0])); | ||
| match ($assertion) { | ||
| 'contains' => $this->$assertmethod($filecontent, $row[1]), | ||
| default => throw new ExpectationException( | ||
| "Invalid assertion: {$assertion}", | ||
| $this->getSession(), | ||
| ) | ||
| }; | ||
| } | ||
| } | ||
|
|
||
| protected function validate_mime_type(string $filecontent, string $format): void { | ||
|
|
||
| $finfo = new \finfo(FILEINFO_MIME_TYPE); | ||
| $mimetype = $finfo->buffer($filecontent); | ||
|
|
||
| $validmimetypes = match ($format) { | ||
| 'zip' => ['application/zip', 'application/x-zip-compressed', 'multipart/x-zip'], | ||
| 'xml' => ['application/xml', 'text/xml'], | ||
| 'txt' => ['text/plain'], | ||
| 'gift' => ['text/plain'], | ||
| 'png' => ['image/png'], | ||
| default => [$format], // If the format is not one of the above, assume it is the only valid MIME type | ||
| }; | ||
|
|
||
| if (!in_array($mimetype, $validmimetypes)) { | ||
| throw new ExpectationException( | ||
| "The file downloaded should have been a {$format} file, but got {$mimetype} instead.", | ||
| $this->getSession(), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| protected function assert_file_type_xml(string $filecontent, string $contains): void { | ||
|
|
||
| // Load the XML content into a SimpleXMLElement object | ||
| $xml = new SimpleXMLElement($filecontent); | ||
|
|
||
| // Use xpath to search for the string in the XML content | ||
| $result = $xml->xpath("//*[contains(text(), '$contains')]"); | ||
|
|
||
| // If the result is empty, the string was not found in the XML content | ||
| if (empty($result)) { | ||
| throw new ExpectationException( | ||
| "The string '{$contains}' was not found in the XML content.", | ||
| $this->getSession(), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| protected function assert_file_type_zip(string $filecontent, string $expectedfile): void { | ||
|
|
||
| // Save the file to disk. | ||
| $tempdir = make_request_directory(); | ||
| $filepath = $tempdir . '/downloaded.zip'; | ||
| file_put_contents($filepath, $filecontent); | ||
|
|
||
| $zip = new ZipArchive(); | ||
| $res = $zip->open($filepath); | ||
|
|
||
| if ($res !== true) { | ||
| throw new ExpectationException( | ||
| "Failed to open zip file.", | ||
| $this->getSession(), | ||
| ); | ||
| } | ||
|
|
||
| // Check if the expected file exists in the zip archive. | ||
| if ($zip->locateName($expectedfile) === false) { | ||
| throw new ExpectationException( | ||
| "The file '{$expectedfile}' was not found in the zip archive.", | ||
| $this->getSession(), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| protected function assert_file_type_text(string $filecontent, string $contains): void { | ||
|
|
||
| // Check if the string is present in the file content. | ||
| if (!str_contains($filecontent, $contains)) { | ||
| throw new ExpectationException( | ||
| "The string '{$contains}' was not found in the file content.", | ||
| $this->getSession(), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| protected function assert_file_type_gift(string $filecontent, string $contains): void { | ||
| $this->assert_file_type_text($filecontent, $contains); | ||
| } | ||
| } |
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