1 files changed, 81 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/test_ext_background_script_and_service_worker.js b/toolkit/components/extensions/test/xpcshell/test_ext_background_script_and_service_worker.js
new file mode 100644
index 0000000000..fc59b1810d
--- /dev/null
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_background_script_and_service_worker.js
@@ -0,0 +1,81 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+async function testExtensionWithBackground({
+  with_scripts = false,
+  with_service_worker = false,
+  with_page = false,
+  expected_background_type,
+  expected_manifest_warnings = [],
+}) {
+  let background = {};
+  if (with_scripts) {
+    background.scripts = ["scripts.js"];
+  }
+  if (with_service_worker) {
+    background.service_worker = "sw.js";
+  }
+  if (with_page) {
+    background.page = "page.html";
+  }
+  let extension = ExtensionTestUtils.loadExtension({
+    manifest: { background },
+    files: {
+      "scripts.js": () => {
+        browser.test.sendMessage("from_bg", "scripts");
+      },
+      "sw.js": () => {
+        browser.test.sendMessage("from_bg", "service_worker");
+      },
+      "page.html": `<!DOCTYPE html><script src="page.js"></script>`,
+      "page.js": () => {
+        browser.test.sendMessage("from_bg", "page");
+      },
+    },
+  });
+  ExtensionTestUtils.failOnSchemaWarnings(false);
+  await extension.startup();
+  ExtensionTestUtils.failOnSchemaWarnings(true);
+  Assert.deepEqual(
+    extension.extension.warnings,
+    expected_manifest_warnings,
+    "Expected manifest warnings"
+  );
+  info("Waiting for background to start");
+  Assert.equal(
+    await extension.awaitMessage("from_bg"),
+    expected_background_type,
+    "Expected background type"
+  );
+  await extension.unload();
+}
+
+add_task(async function test_page_and_scripts() {
+  await testExtensionWithBackground({
+    with_page: true,
+    with_scripts: true,
+    // Should be expected_background_type: "scripts", not "page".
+    // https://github.com/w3c/webextensions/issues/282#issuecomment-1443332913
+    // ... but changing that may potentially affect backcompat of existing
+    // Firefox add-ons.
+    expected_background_type: "page",
+    expected_manifest_warnings: [
+      "Reading manifest: Warning processing background.scripts: An unexpected property was found in the WebExtension manifest.",
+    ],
+  });
+});
+
+add_task(
+  { skip_if: () => WebExtensionPolicy.backgroundServiceWorkerEnabled },
+  async function test_scripts_and_service_worker_when_sw_disabled() {
+    await testExtensionWithBackground({
+      with_scripts: true,
+      with_service_worker: true,
+      expected_background_type: "scripts",
+      expected_manifest_warnings: [
+        "Reading manifest: Warning processing background.service_worker: An unexpected property was found in the WebExtension manifest.",
+      ],
+    });
+  }
+);