Faster coverage-xml report

Author: staabm

src/Report/Xml/Coverage.php

@@ -18,42 +18,25 @@
  */
 final class Coverage
 {
-    private readonly XMLWriter $writer;
     private readonly DOMElement $contextNode;
-    private bool $finalized = false;
+    private readonly string $line;
 
     public function __construct(DOMElement $context, string $line)
     {
         $this->contextNode = $context;
-
-        $this->writer = new XMLWriter;
-        $this->writer->openMemory();
-        $this->writer->startElementNs(null, $context->nodeName, 'https://schema.phpunit.de/coverage/1.0');
-        $this->writer->writeAttribute('nr', $line);
+        $this->line        = $line;
     }
 
-    /**
-     * @throws ReportAlreadyFinalizedException
-     */
-    public function addTest(string $test): void
+    public function finalize(array $tests): void
     {
-        if ($this->finalized) {
-            // @codeCoverageIgnoreStart
-            throw new ReportAlreadyFinalizedException;
-            // @codeCoverageIgnoreEnd
+        $xml = '<line nr="'. $this->line .'">';
+        foreach ($tests as $test) {
+            $xml .= '<covered by="'. htmlspecialchars($test, ENT_QUOTES | ENT_XML1) .'" />';
         }
-
-        $this->writer->startElement('covered');
-        $this->writer->writeAttribute('by', $test);
-        $this->writer->endElement();
-    }
-
-    public function finalize(): void
-    {
-        $this->writer->endElement();
+        $xml .= '</line>';
 
         $fragment = $this->contextNode->ownerDocument->createDocumentFragment();
-        $fragment->appendXML($this->writer->outputMemory());
+        $fragment->appendXML($xml);
 
         $this->contextNode->parentNode->replaceChild(
             $fragment,

src/Report/Xml/Facade.php

@@ -165,12 +165,7 @@ private function processFile(FileNode $file, Directory $context): void
             }
 
             $coverage = $fileReport->lineCoverage((string) $line);
-
-            foreach ($tests as $test) {
-                $coverage->addTest($test);
-            }
-
-            $coverage->finalize();
+            $coverage->finalize($tests);
         }
 
         $fileReport->source()->setSourceCode(