3 files changed, 76 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/xslt/test.xml b/dom/serviceworkers/test/xslt/test.xml
new file mode 100644
index 0000000000..83c7776339
--- /dev/null
+++ b/dom/serviceworkers/test/xslt/test.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl" href="test.xsl"?>
+<result>
+  <Title>Example</Title>
+  <Error>Error</Error>
+</result>
diff --git a/dom/serviceworkers/test/xslt/xslt.sjs b/dom/serviceworkers/test/xslt/xslt.sjs
new file mode 100644
index 0000000000..db681ab500
--- /dev/null
+++ b/dom/serviceworkers/test/xslt/xslt.sjs
@@ -0,0 +1,12 @@
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "application/xslt+xml", false);
+  response.setHeader("Access-Control-Allow-Origin", "*");
+
+  var body = request.queryString;
+  if (!body) {
+    response.setStatusLine(null, 500, "Invalid querystring");
+    return;
+  }
+
+  response.write(unescape(body));
+}
diff --git a/dom/serviceworkers/test/xslt_worker.js b/dom/serviceworkers/test/xslt_worker.js
new file mode 100644
index 0000000000..d3c4383f22
--- /dev/null
+++ b/dom/serviceworkers/test/xslt_worker.js
@@ -0,0 +1,58 @@
+var testType = "synthetic";
+
+var xslt =
+  '<?xml version="1.0"?> ' +
+  '<xsl:stylesheet version="1.0"' +
+  '   xmlns:xsl="http://www.w3.org/1999/XSL/Transform">' +
+  '  <xsl:template match="node()|@*">' +
+  "    <xsl:copy>" +
+  '      <xsl:apply-templates select="node()|@*"/>' +
+  "    </xsl:copy>" +
+  "  </xsl:template>" +
+  '  <xsl:template match="Error"/>' +
+  "</xsl:stylesheet>";
+
+onfetch = function(event) {
+  if (event.request.url.includes("test.xsl")) {
+    if (testType == "synthetic") {
+      if (event.request.mode != "cors") {
+        event.respondWith(Response.error());
+        return;
+      }
+
+      event.respondWith(
+        Promise.resolve(
+          new Response(xslt, {
+            headers: { "Content-Type": "application/xslt+xml" },
+          })
+        )
+      );
+    } else if (testType == "cors") {
+      if (event.request.mode != "cors") {
+        event.respondWith(Response.error());
+        return;
+      }
+
+      var url =
+        "http://example.com/tests/dom/serviceworkers/test/xslt/xslt.sjs?" +
+        escape(xslt);
+      event.respondWith(fetch(url, { mode: "cors" }));
+    } else if (testType == "opaque") {
+      if (event.request.mode != "cors") {
+        event.respondWith(Response.error());
+        return;
+      }
+
+      var url =
+        "http://example.com/tests/dom/serviceworkers/test/xslt/xslt.sjs?" +
+        escape(xslt);
+      event.respondWith(fetch(url, { mode: "no-cors" }));
+    } else {
+      event.respondWith(Response.error());
+    }
+  }
+};
+
+onmessage = function(event) {
+  testType = event.data;
+};