1 files changed, 30 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_dataURI_unique_opaque_origin.js b/docshell/test/browser/browser_dataURI_unique_opaque_origin.js
new file mode 100644
index 0000000000..c46012fa82
--- /dev/null
+++ b/docshell/test/browser/browser_dataURI_unique_opaque_origin.js
@@ -0,0 +1,30 @@
+add_task(async function test_dataURI_unique_opaque_origin() {
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  let tab = BrowserTestUtils.addTab(gBrowser, "http://example.com");
+  let browser = tab.linkedBrowser;
+  await BrowserTestUtils.browserLoaded(browser);
+
+  let pagePrincipal = browser.contentPrincipal;
+  info("pagePrincial " + pagePrincipal.origin);
+
+  BrowserTestUtils.loadURIString(browser, "data:text/html,hi");
+  await BrowserTestUtils.browserLoaded(browser);
+
+  await SpecialPowers.spawn(
+    browser,
+    [{ principal: pagePrincipal }],
+    async function (args) {
+      info("data URI principal: " + content.document.nodePrincipal.origin);
+      Assert.ok(
+        content.document.nodePrincipal.isNullPrincipal,
+        "data: URI should have NullPrincipal."
+      );
+      Assert.ok(
+        !content.document.nodePrincipal.equals(args.principal),
+        "data: URI should have unique opaque origin."
+      );
+    }
+  );
+
+  gBrowser.removeTab(tab);
+});