1 files changed, 46 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/test_ext_runtime_id.js b/toolkit/components/extensions/test/xpcshell/test_ext_runtime_id.js
new file mode 100644
index 0000000000..6967e81232
--- /dev/null
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_runtime_id.js
@@ -0,0 +1,46 @@
+"use strict";
+
+const server = createHttpServer({ hosts: ["example.com"] });
+server.registerDirectory("/data/", do_get_file("data"));
+
+add_task(async function test_runtime_id() {
+  let extension = ExtensionTestUtils.loadExtension({
+    manifest: {
+      content_scripts: [
+        {
+          matches: ["http://example.com/data/file_sample.html"],
+          js: ["content_script.js"],
+        },
+      ],
+    },
+
+    background() {
+      browser.test.sendMessage("background-id", browser.runtime.id);
+    },
+
+    files: {
+      "content_script.js"() {
+        browser.test.sendMessage("content-id", browser.runtime.id);
+      },
+    },
+  });
+
+  await extension.startup();
+
+  let contentPage = await ExtensionTestUtils.loadContentPage(
+    "http://example.com/data/file_sample.html"
+  );
+
+  let backgroundId = await extension.awaitMessage("background-id");
+  equal(
+    backgroundId,
+    extension.id,
+    "runtime.id from background script is correct"
+  );
+
+  let contentId = await extension.awaitMessage("content-id");
+  equal(contentId, extension.id, "runtime.id from content script is correct");
+
+  await contentPage.close();
+  await extension.unload();
+});