Bug 1631403 - Add test case to cover RDP APIs that 'web-ext run' depends on. r=rpl,ochameau,robwu

Differential Revision: https://phabricator.services.mozilla.com/D71892

devtools/server/tests/xpcshell/test_webext_apis.js

@@ -0,0 +1,94 @@
+/* Any copyright is dedicated to the Public Domain.
+http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// The `AddonsManager` test helper can only be called once per test script.
+// This `setup` task will run first.
+add_task(async function setup() {
+  Services.prefs.setBoolPref("extensions.blocklist.enabled", false);
+  await startupAddonsManager();
+});
+
+// Basic request wrapper that sends a request and resolves on the next packet.
+// Will only work for very basic scenarios, without events emitted on the server
+// etc...
+async function sendRequest(transport, request) {
+  return new Promise(resolve => {
+    transport.hooks = {
+      onPacket: packet => {
+        dump(`received packet: ${JSON.stringify(packet)}\n`);
+        // Let's resolve only when we get a packet that is related to our
+        // request. It is needed because some methods do not return the correct
+        // response right away. This is the case of the `reload` method, which
+        // receives a `addonListChanged` message first and then a `reload`
+        // message.
+        if (packet.from === request.to) {
+          resolve(packet);
+        }
+      },
+      onClosed: () => {},
+    };
+    transport.send(request);
+  });
+}
+
+// If this test case fails, please reach out to webext peers because
+// https://github.com/mozilla/web-ext relies on the APIs tested here.
+add_task(async function test_webext_run_apis() {
+  DevToolsServer.init();
+  DevToolsServer.registerAllActors();
+
+  const transport = DevToolsServer.connectPipe();
+
+  // After calling connectPipe, the root actor will be created on the server
+  // and a packet will be emitted after a tick. Wait for the initial packet.
+  await new Promise(resolve => {
+    transport.hooks = { onPacket: resolve };
+  });
+
+  const getRootResponse = await sendRequest(transport, {
+    to: "root",
+    type: "getRoot",
+  });
+
+  ok(getRootResponse, "received a response after calling RootActor::getRoot");
+  ok(getRootResponse.addonsActor, "getRoot returned an addonsActor id");
+
+  // installTemporaryAddon
+  const addonId = "test-addons-actor@mozilla.org";
+  const addonPath = getFilePath("addons/web-extension", false, true);
+  const promiseStarted = AddonTestUtils.promiseWebExtensionStartup(addonId);
+  const { addon } = await sendRequest(transport, {
+    to: getRootResponse.addonsActor,
+    type: "installTemporaryAddon",
+    addonPath,
+  });
+  await promiseStarted;
+
+  ok(addon, "addonsActor allows to install a temporary add-on");
+  equal(addon.id, addonId, "temporary add-on is the expected one");
+  equal(addon.actor, false, "temporary add-on does not have an actor");
+
+  // listAddons
+  const { addons } = await sendRequest(transport, {
+    to: "root",
+    type: "listAddons",
+  });
+  ok(Array.isArray(addons), "listAddons() returns a list of add-ons");
+
+  const installedAddon = addons[0];
+  equal(installedAddon.id, addonId, "installed add-on is the expected one");
+  ok(installedAddon.actor, "returned add-on has an actor");
+
+  // reload
+  const promiseReloaded = AddonTestUtils.promiseAddonEvent("onInstalled");
+  const promiseRestarted = AddonTestUtils.promiseWebExtensionStartup(addonId);
+  await sendRequest(transport, {
+    to: installedAddon.actor,
+    type: "reload",
+  });
+  await Promise.all([promiseReloaded, promiseRestarted]);
+
+  transport.close();
+});

devtools/server/tests/xpcshell/xpcshell.ini

@@ -236,3 +236,4 @@ skip-if = true # breakpoint sliding is not supported bug 1525685
 [test_safe-getter.js]
 [test_shapes_highlighter_helpers.js]
 [test_symbolactor.js]
+[test_webext_apis.js]