1 files changed, 84 insertions, 0 deletions
diff --git a/devtools/client/aboutdebugging/test/browser_addons_debug_webextension_nobg.js b/devtools/client/aboutdebugging/test/browser_addons_debug_webextension_nobg.js
new file mode 100644
index 000000000..0e731fc5d
--- /dev/null
+++ b/devtools/client/aboutdebugging/test/browser_addons_debug_webextension_nobg.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Avoid test timeouts that can occur while waiting for the "addon-console-works" message.
+requestLongerTimeout(2);
+
+const ADDON_NOBG_ID = "test-devtools-webextension-nobg@mozilla.org";
+const ADDON_NOBG_NAME = "test-devtools-webextension-nobg";
+const ADDON_NOBG_PATH = "addons/test-devtools-webextension-nobg/manifest.json";
+
+const {
+  BrowserToolboxProcess
+} = Cu.import("resource://devtools/client/framework/ToolboxProcess.jsm", {});
+
+/**
+ * This test file ensures that the webextension addon developer toolbox:
+ * - the webextension developer toolbox is connected to a fallback page when the
+ *   background page is not available (and in the fallback page document body contains
+ *   the expected message, which warns the user that the current page is not a real
+ *   webextension context);
+ */
+add_task(function* testWebExtensionsToolboxNoBackgroundPage() {
+  let {
+    tab, document, debugBtn,
+  } = yield setupTestAboutDebuggingWebExtension(ADDON_NOBG_NAME, ADDON_NOBG_PATH);
+
+  // Be careful, this JS function is going to be executed in the addon toolbox,
+  // which lives in another process. So do not try to use any scope variable!
+  let env = Cc["@mozilla.org/process/environment;1"]
+        .getService(Ci.nsIEnvironment);
+  let testScript = function () {
+    /* eslint-disable no-undef */
+    toolbox.selectTool("inspector")
+      .then(inspector => {
+        return inspector.walker.querySelector(inspector.walker.rootNode, "body");
+      })
+      .then((nodeActor) => {
+        if (!nodeActor) {
+          throw new Error("nodeActor not found");
+        }
+
+        dump("Got a nodeActor\n");
+
+        if (!(nodeActor.inlineTextChild)) {
+          throw new Error("inlineTextChild not found");
+        }
+
+        dump("Got a nodeActor with an inline text child\n");
+
+        let expectedValue = "Your addon does not have any document opened yet.";
+        let actualValue = nodeActor.inlineTextChild._form.nodeValue;
+
+        if (actualValue !== expectedValue) {
+          throw new Error(
+            `mismatched inlineTextchild value: "${actualValue}" !== "${expectedValue}"`
+          );
+        }
+
+        dump("Got the expected inline text content in the selected node\n");
+        return Promise.resolve();
+      })
+      .then(() => toolbox.destroy())
+      .catch((error) => {
+        dump("Error while running code in the browser toolbox process:\n");
+        dump(error + "\n");
+        dump("stack:\n" + error.stack + "\n");
+      });
+    /* eslint-enable no-undef */
+  };
+  env.set("MOZ_TOOLBOX_TEST_SCRIPT", "new " + testScript);
+  registerCleanupFunction(() => {
+    env.set("MOZ_TOOLBOX_TEST_SCRIPT", "");
+  });
+
+  let onToolboxClose = BrowserToolboxProcess.once("close");
+  debugBtn.click();
+  yield onToolboxClose;
+
+  ok(true, "Addon toolbox closed");
+
+  yield uninstallAddon({document, id: ADDON_NOBG_ID, name: ADDON_NOBG_NAME});
+  yield closeAboutDebugging(tab);
+});