test methods return the same result

library/Icingadb/Util/PluginOutput.php

@@ -4,6 +4,9 @@
 
 namespace Icinga\Module\Icingadb\Util;
 
+use DOMDocument;
+use DOMNode;
+use DOMText;
 use Icinga\Module\Icingadb\Hook\PluginOutputHook;
 use Icinga\Module\Icingadb\Model\Host;
 use Icinga\Module\Icingadb\Model\Service;
@@ -12,6 +15,8 @@
 use ipl\Html\HtmlString;
 use ipl\Orm\Model;
 use LogicException;
+use Icinga\Web\Dom\DomNodeIterator;
+use RecursiveIteratorIterator;
 
 class PluginOutput extends HtmlString
 {
@@ -199,4 +204,87 @@ public function render()
 
         return $output;
     }
+
+
+    /** @var string[] Patterns to be replaced in html plugin output */
+    const HTML_PATTERNS = [
+        '~\\\t~',
+        '~\\\n~'
+    ];
+
+    /** @var string[] Replacements for {@see PluginOutput::HTML_PATTERNS} */
+    const HTML_REPLACEMENTS = [
+        "\t",
+        "\n"
+    ];
+    public static function test($output)
+    {
+        $output = HtmlPurifier::process(preg_replace(
+            self::HTML_PATTERNS,
+            self::HTML_REPLACEMENTS,
+            $output
+        ));
+
+        $output = trim($output);
+
+
+        $pattern = '/[([](OK|WARNING|CRITICAL|UNKNOWN|UP|DOWN)[)\]]/';
+        $doc = new DOMDocument();
+        $doc->loadXML('<div>' . $output . '</div>', LIBXML_NOERROR | LIBXML_NOWARNING);
+        $dom = new RecursiveIteratorIterator(new DomNodeIterator($doc), RecursiveIteratorIterator::SELF_FIRST);
+
+        $nodesToRemove = [];
+        foreach ($dom as $node) {
+            /** @var DOMNode $node */
+            if ($node->nodeType !== XML_TEXT_NODE) {
+                continue;
+            }
+
+            $start = 0;
+            while (preg_match($pattern, $node->nodeValue, $match, PREG_OFFSET_CAPTURE, $start)) {
+                $offsetLeft = $match[0][1];
+                $matchLength = strlen($match[0][0]);
+                $leftLength = $offsetLeft - $start;
+
+                // if there is text before the match
+                if ($leftLength) {
+                    // create node for leading text
+                    $text = new DOMText(substr($node->nodeValue, $start, $leftLength));
+                    $node->parentNode->insertBefore($text, $node);
+                }
+
+                // create the state ball for the match
+                $span = $doc->createElement('span');
+                $span->setAttribute(
+                    'class',
+                    'state-ball ball-size-m state-' . strtolower($match[1][0])
+                );
+                $node->parentNode->insertBefore($span, $node);
+
+                // start for next match
+                $start = $offsetLeft + $matchLength;
+            }
+
+            if ($start) {
+                // is there text left?
+                if (strlen($node->nodeValue) > $start) {
+                    // create node for trailing text
+                    $text = new DOMText(substr($node->nodeValue, $start));
+                    $node->parentNode->insertBefore($text, $node);
+                }
+
+                // delete the old node later
+                $nodesToRemove[] = $node;
+            }
+        }
+
+        foreach ($nodesToRemove as $node) {
+            /** @var DOMNode $node */
+            $node->parentNode->removeChild($node);
+        }
+
+        $output = substr($doc->saveHTML(), 5, -7);
+
+        return preg_replace('/,(?=[^\s])/', ',&#8203;', $output);
+    }
 }

test/php/library/Icingadb/Util/PluginOutputTest.php

@@ -126,4 +126,25 @@ public function testRenderTextWithHtmlIncludingStatesAndSpecialChars()
             'PluginOutput::render does not return expected values'
         );
     }
+
+    public function testRender()
+    {
+        $input = <<<'INPUT'
+Hello <h3>World</h3>, this "is" a <strong>test</strong>.
+[OK] Dummy state
+    special chars: !@#$%^&*()_+{}|:"<>?`-=[]\;',./
+text <span> ends </span> here
+Hello <h3>World</h3>, this "is" a <strong>test</strong>.
+<span class="state-ball ball-size-m state-ok"></span> Dummy state
+    \_ <span class="state-ball ball-size-m state-ok"></span> Fake "state"
+    \_ <span class="state-ball ball-size-m state-warning"></span> Fake state again
+text <span> ends </span> here
+INPUT;
+
+        $this->assertSame(
+            PluginOutput::test($input),
+            (new PluginOutput($input))->render(),
+            'PluginOutput::render does not return expected values'
+        );
+    }
 }