1 files changed, 74 insertions, 0 deletions
diff --git a/dom/xslt/tests/browser/browser_bug1309630.js b/dom/xslt/tests/browser/browser_bug1309630.js
new file mode 100644
index 0000000000..f475fc2585
--- /dev/null
+++ b/dom/xslt/tests/browser/browser_bug1309630.js
@@ -0,0 +1,74 @@
+"use strict";
+
+const BASE = "https://example.com/browser/dom/xslt/tests/browser";
+const SERVER_SCRIPT = `${BASE}/bug1309630.sjs`;
+
+function resetCounter() {
+  return fetch(`${SERVER_SCRIPT}?reset_counter`);
+}
+function recordCounter() {
+  return fetch(`${SERVER_SCRIPT}?record_counter`);
+}
+// Returns a promise that resolves to true if the counter in
+// bug1309630.sjs changed by more than 'value' since last calling
+// recordCounter(), or false if it doesn't and we time out.
+function waitForCounterChangeAbove(value) {
+  return TestUtils.waitForCondition(() =>
+    fetch(`${SERVER_SCRIPT}?get_counter_change`).then(response =>
+      response.ok
+        ? response.text().then(str => Number(str) > value)
+        : Promise.reject()
+    )
+  ).then(
+    () => true,
+    () => false
+  );
+}
+
+add_task(async function test_eternal_xslt() {
+  await resetCounter();
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url: SERVER_SCRIPT, waitForLoad: false },
+    async function(browser) {
+      info("Waiting for XSLT to keep loading");
+
+      ok(
+        await waitForCounterChangeAbove(1),
+        "We should receive at least a request from the document function call."
+      );
+
+      info("Navigating to about:blank");
+      BrowserTestUtils.loadURI(browser, "about:blank");
+      await BrowserTestUtils.browserLoaded(browser);
+
+      info("Check to see if XSLT stops loading");
+      await recordCounter();
+      ok(
+        !(await waitForCounterChangeAbove(0)),
+        "We shouldn't receive more requests to the XSLT file within the timeout period."
+      );
+    }
+  );
+
+  await resetCounter();
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url: `${BASE}/file_bug1309630.html` },
+    async function(browser) {
+      ok(
+        await waitForCounterChangeAbove(1),
+        "We should receive at least a request from the document function call."
+      );
+
+      info("Navigating to about:blank");
+      BrowserTestUtils.loadURI(browser, "about:blank");
+      await BrowserTestUtils.browserLoaded(browser);
+
+      info("Check to see if XSLT stops loading");
+      await recordCounter();
+      ok(
+        !(await waitForCounterChangeAbove(0)),
+        "We shouldn't receive more requests to the XSLT file within the timeout period."
+      );
+    }
+  );
+});