1 files changed, 50 insertions, 0 deletions
diff --git a/testing/web-platform/tests/domparsing/DOMParser-parseFromString-xml-parsererror.html b/testing/web-platform/tests/domparsing/DOMParser-parseFromString-xml-parsererror.html
new file mode 100644
index 0000000000..f6985aa20a
--- /dev/null
+++ b/testing/web-platform/tests/domparsing/DOMParser-parseFromString-xml-parsererror.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<title>DOMParser: &lt;parsererror> element added on error</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+const xhtml_prologue = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"' +
+                       ' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">\n' +
+                       '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">\n' +
+                       '<body>\n',
+      xhtml_epilogue = '</body>\n</html>\n';
+
+[
+  '<span x:test="testing">1</span>',                // undeclared 'x' namespace prefix
+  '< span>2</span>',                                // bad start tag
+  '<span :test="testing">3</span>',                 // empty namespace prefix
+  '<span><em>4</span></em>',                        // staggered tags
+  '<span>5',                                        // missing end </span> tag
+  '6</span>',                                       // missing start <span> tag
+  '<span>7< /span>',                                // bad end tag
+  '<span>8</ span>',                                // bad end tag
+  '<span novalue>9</span>',                         // missing attribute value
+  '<span ="noattr">10</span>',                      // missing attribute name
+  '<span ::="test">11</span>',                      // bad namespace prefix
+  '<span xmlns:="urn:x-test:test">12</span>',       // missing namespace prefix
+  '<span xmlns:xmlns="">13</span>',                 // invalid namespace prefix
+  '<span data-test=testing>14</span>',              // unquoted attribute value
+  '15<span',                                        // bad start tag
+  '<8:test xmlns:8="urn:x-test:test">16</8:test>',  // invalid namespace prefix
+  '<span xmlns:p1 xmlns:p2="urn:x-test:test"/>17',  // missing namespace URI
+].forEach(fragment => {
+  test(() => {
+    var document_string = xhtml_prologue + fragment + xhtml_epilogue;
+    var doc = (new DOMParser).parseFromString(document_string, "application/xhtml+xml");
+    var parsererrors = doc.getElementsByTagName("parsererror");
+    assert_equals(parsererrors.length, 1, 'expecting one parsererror');
+  }, document.title + ', ' + fragment);
+});
+
+[
+  'text/xml',
+  'application/xml',
+  'application/xhtml+xml',
+  'image/svg+xml'
+].forEach(mimeType => {
+  test(() => {
+    const doc = (new DOMParser()).parseFromString('<span x:test="testing">1</span>', mimeType);
+    assert_equals(doc.contentType, mimeType);
+  }, `${mimeType} is preserved in the error document`);
+})
+</script>