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<?php |
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use PHPUnit\Framework\TestCase; |
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class MarkdownTestHelper |
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{ |
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/** |
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* Takes an input directory containing .text and .(x)html files, and returns an array |
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* of .text files and the corresponding output xhtml or html file. Can be used in a unit test data provider. |
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* |
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* @param string $directory Input directory |
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* |
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* @return array |
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*/ |
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public static function getInputOutputPaths($directory) { |
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$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory)); |
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$regexIterator = new RegexIterator( |
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$iterator, |
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'/^.+\.text$/', |
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RecursiveRegexIterator::GET_MATCH |
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); |
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$dataValues = []; |
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/** @var SplFileInfo $inputFile */ |
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foreach ($regexIterator as $inputFiles) { |
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foreach ($inputFiles as $inputMarkdownPath) { |
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$xhtml = true; |
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$expectedHtmlPath = substr($inputMarkdownPath, 0, -4) . 'xhtml'; |
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if (!file_exists($expectedHtmlPath)) { |
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$expectedHtmlPath = substr($inputMarkdownPath, 0, -4) . 'html'; |
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$xhtml = false; |
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} |
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$dataValues[] = [$inputMarkdownPath, $expectedHtmlPath, $xhtml]; |
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} |
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} |
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return $dataValues; |
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} |
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/** |
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* Applies PHPUnit's assertSame after normalizing both strings (e.g. ignoring whitespace differences). |
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* Uses logic found originally in MDTest. |
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* |
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* @param string $string1 |
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* @param string $string2 |
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* @param string $message Positive message to print when test fails (e.g. "String1 matches String2") |
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* @param bool $xhtml |
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*/ |
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public static function assertSameNormalized($string1, $string2, $message, $xhtml = true) { |
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$t_result = $string1; |
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$t_output = $string2; |
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// DOMDocuments |
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if ($xhtml) { |
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$document = new DOMDocument(); |
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$doc_result = $document->loadXML('<!DOCTYPE html>' . |
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"<html xmlns='http://www.w3.org/1999/xhtml'>" . |
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"<body>$t_result</body></html>"); |
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$document2 = new DOMDocument(); |
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$doc_output = $document2->loadXML('<!DOCTYPE html>' . |
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"<html xmlns='http://www.w3.org/1999/xhtml'>" . |
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"<body>$t_output</body></html>"); |
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if ($doc_result) { |
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static::normalizeElementContent($document->documentElement, false); |
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$n_result = $document->saveXML(); |
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} else { |
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$n_result = '--- Expected Result: XML Parse Error ---'; |
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} |
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if ($doc_output) { |
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static::normalizeElementContent($document2->documentElement, false); |
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$n_output = $document2->saveXML(); |
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} else { |
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$n_output = '--- Output: XML Parse Error ---'; |
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} |
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} else { |
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// '@' suppressors used because some tests have invalid HTML (multiple elements with the same id attribute) |
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// Perhaps isolate to a separate test and remove this? |
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$document = new DOMDocument(); |
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$doc_result = @$document->loadHTML($t_result); |
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$document2 = new DOMDocument(); |
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$doc_output = @$document2->loadHTML($t_output); |
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if ($doc_result) { |
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static::normalizeElementContent($document->documentElement, false); |
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$n_result = $document->saveHTML(); |
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} else { |
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$n_result = '--- Expected Result: HTML Parse Error ---'; |
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} |
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if ($doc_output) { |
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static::normalizeElementContent($document2->documentElement, false); |
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$n_output = $document2->saveHTML(); |
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} else { |
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$n_output = '--- Output: HTML Parse Error ---'; |
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} |
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} |
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$n_result = preg_replace('{^.*?<body>|</body>.*?$}is', '', $n_result); |
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$n_output = preg_replace('{^.*?<body>|</body>.*?$}is', '', $n_output); |
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$c_result = $n_result; |
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$c_output = $n_output; |
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$c_result = trim($c_result) . "\n"; |
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$c_output = trim($c_output) . "\n"; |
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// This will throw a test exception if the strings don't exactly match |
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TestCase::assertSame($c_result, $c_output, $message); |
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} |
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/** |
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* @param DOMElement $element Modifies this element by reference |
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* @param bool $whitespace_preserve Preserve Whitespace |
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* @return void |
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*/ |
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protected static function normalizeElementContent($element, $whitespace_preserve) { |
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# |
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# Normalize content of HTML DOM $element. The $whitespace_preserve |
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# argument indicates that whitespace is significant and shouldn't be |
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# normalized; it should be used for the content of certain elements like |
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# <pre> or <script>. |
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# |
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$node_list = $element->childNodes; |
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switch (strtolower($element->nodeName)) { |
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case 'body': |
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case 'div': |
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case 'blockquote': |
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case 'ul': |
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case 'ol': |
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case 'dl': |
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case 'h1': |
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case 'h2': |
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case 'h3': |
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case 'h4': |
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case 'h5': |
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case 'h6': |
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$whitespace = "\n\n"; |
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break; |
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case 'table': |
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$whitespace = "\n"; |
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break; |
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case 'pre': |
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case 'script': |
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case 'style': |
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case 'title': |
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$whitespace_preserve = true; |
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$whitespace = ""; |
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break; |
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default: |
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$whitespace = ""; |
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break; |
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} |
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foreach ($node_list as $node) { |
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switch ($node->nodeType) { |
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case XML_ELEMENT_NODE: |
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static::normalizeElementContent($node, $whitespace_preserve); |
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static::normalizeElementAttributes($node); |
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switch (strtolower($node->nodeName)) { |
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case 'p': |
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case 'div': |
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case 'hr': |
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case 'blockquote': |
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case 'ul': |
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case 'ol': |
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case 'dl': |
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case 'li': |
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case 'address': |
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case 'table': |
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case 'dd': |
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case 'pre': |
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case 'h1': |
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case 'h2': |
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case 'h3': |
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case 'h4': |
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case 'h5': |
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case 'h6': |
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$whitespace = "\n\n"; |
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break; |
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case 'tr': |
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case 'td': |
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case 'dt': |
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$whitespace = "\n"; |
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break; |
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default: |
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$whitespace = ""; |
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break; |
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} |
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if (($whitespace === "\n\n" || $whitespace === "\n") && |
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$node->nextSibling && |
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$node->nextSibling->nodeType != XML_TEXT_NODE) { |
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$element->insertBefore(new DOMText($whitespace), $node->nextSibling); |
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} |
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break; |
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case XML_TEXT_NODE: |
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if (!$whitespace_preserve) { |
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if (trim($node->data) === "") { |
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$node->data = $whitespace; |
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} |
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else { |
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$node->data = preg_replace('{\s+}', ' ', $node->data); |
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} |
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} |
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break; |
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} |
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} |
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if (!$whitespace_preserve && |
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($whitespace === "\n\n" || $whitespace === "\n")) { |
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if ($element->firstChild) { |
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if ($element->firstChild->nodeType == XML_TEXT_NODE) { |
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$element->firstChild->data = |
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preg_replace('{^\s+}', "\n", $element->firstChild->data); |
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} |
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else { |
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$element->insertBefore(new DOMText("\n"), $element->firstChild); |
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} |
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} |
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if ($element->lastChild) { |
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if ($element->lastChild->nodeType == XML_TEXT_NODE) { |
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$element->lastChild->data = |
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preg_replace('{\s+$}', "\n", $element->lastChild->data); |
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} |
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else { |
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$element->insertBefore(new DOMText("\n"), null); |
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} |
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} |
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} |
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} |
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/** |
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* @param DOMElement $element Modifies this element by reference |
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*/ |
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protected static function normalizeElementAttributes (DOMElement $element) |
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{ |
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# |
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# Sort attributes by name. |
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# |
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// Gather the list of attributes as an array. |
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$attr_list = array(); |
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foreach ($element->attributes as $attr_node) { |
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$attr_list[$attr_node->name] = $attr_node; |
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} |
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// Sort attribute list by name. |
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ksort($attr_list); |
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// Remove then put back each attribute following sort order. |
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foreach ($attr_list as $attr_node) { |
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$element->removeAttributeNode($attr_node); |
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$element->setAttributeNode($attr_node); |
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} |
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} |
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} |
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