1 files changed, 74 insertions, 0 deletions
diff --git a/testing/mochitest/tests/browser/browser_document_builder_sjs.js b/testing/mochitest/tests/browser/browser_document_builder_sjs.js
new file mode 100644
index 0000000000..4b653a792d
--- /dev/null
+++ b/testing/mochitest/tests/browser/browser_document_builder_sjs.js
@@ -0,0 +1,74 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Checks that document-builder.sjs works as expected
+add_task(async function assertHtmlParam() {
+  const html = "<main><h1>I'm built different</h1></main>";
+  const delay = 5000;
+
+  const params = new URLSearchParams({
+    delay,
+    html,
+  });
+  params.append("headers", "x-header-1:a");
+  params.append("headers", "x-header-2:b");
+
+  const startTime = performance.now();
+  const request = new Request(
+    `https://example.com/document-builder.sjs?${params}`
+  );
+  info("Do a fetch request to document-builder.sjs");
+  const response = await fetch(request);
+  const duration = performance.now() - startTime;
+
+  is(response.status, 200, "Response is a 200");
+  ok(
+    duration > delay,
+    `The delay parameter works as expected (took ${duration}ms)`
+  );
+
+  const responseText = await response.text();
+  is(responseText, html, "The response has the expected content");
+
+  is(
+    response.headers.get("content-type"),
+    "text/html",
+    "response has the expected content-type"
+  );
+  is(
+    response.headers.get("x-header-1"),
+    "a",
+    "first header was set as expected"
+  );
+  is(
+    response.headers.get("x-header-2"),
+    "b",
+    "second header was set as expected"
+  );
+});
+
+add_task(async function assertFileParam() {
+  const file = `browser/testing/mochitest/tests/browser/dummy.html`;
+  const request = new Request(
+    `https://example.com/document-builder.sjs?file=${file}`
+  );
+
+  info("Do a fetch request to document-builder.sjs with a `file` parameter");
+  const response = await fetch(request);
+  is(response.status, 200, "Response is a 200");
+  is(
+    response.headers.get("content-type"),
+    "text/html",
+    "response has the expected content-type"
+  );
+
+  const responseText = await response.text();
+  const parser = new DOMParser();
+  const doc = parser.parseFromString(responseText, "text/html");
+  is(
+    doc.body.innerHTML.trim(),
+    "This is a dummy page",
+    "The response has the file content"
+  );
+});