1 files changed, 83 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/test/browser/browser_html_discover_view_prefs.js b/toolkit/mozapps/extensions/test/browser/browser_html_discover_view_prefs.js
new file mode 100644
index 0000000000..474cd424b9
--- /dev/null
+++ b/toolkit/mozapps/extensions/test/browser/browser_html_discover_view_prefs.js
@@ -0,0 +1,83 @@
+/* eslint max-len: ["error", 80] */
+"use strict";
+
+const { AddonTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/AddonTestUtils.sys.mjs"
+);
+
+AddonTestUtils.initMochitest(this);
+const server = AddonTestUtils.createHttpServer();
+const TEST_API_URL = `http://localhost:${server.identity.primaryPort}/discoapi`;
+
+async function checkIfDiscoverVisible(expectVisible) {
+  let requestCount = 0;
+  let requestPromise = new Promise(resolve => {
+    // Overwrites previous request handler, if any.
+    server.registerPathHandler("/discoapi", (request, response) => {
+      ++requestCount;
+      response.write(`{"results": []}`);
+      resolve();
+    });
+  });
+
+  // Open about:addons with default view.
+  let managerWindow = await open_manager(null);
+  let categoryUtilities = new CategoryUtilities(managerWindow);
+
+  is(
+    categoryUtilities.isTypeVisible("discover"),
+    expectVisible,
+    "Visibility of discopane"
+  );
+
+  await wait_for_view_load(managerWindow);
+  if (expectVisible) {
+    is(
+      categoryUtilities.selectedCategory,
+      "discover",
+      "Expected discopane as the default view"
+    );
+    await requestPromise;
+    is(requestCount, 1, "Expected discovery API request");
+  } else {
+    // The next view (after discopane) is the extension list.
+    is(
+      categoryUtilities.selectedCategory,
+      "extension",
+      "Should fall back to another view when the discopane is disabled"
+    );
+    is(requestCount, 0, "Discovery API should not be requested");
+  }
+
+  await close_manager(managerWindow);
+}
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["extensions.getAddons.discovery.api_url", TEST_API_URL],
+      // Disable recommendations at the HTML about:addons view to avoid sending
+      // a discovery API request from the fallback view (extension list) in the
+      // showPane_false test.
+      ["extensions.htmlaboutaddons.recommendations.enabled", false],
+    ],
+  });
+});
+
+add_task(async function showPane_true() {
+  await SpecialPowers.pushPrefEnv({
+    set: [[PREF_DISCOVER_ENABLED, true]],
+    clear: [[PREF_UI_LASTCATEGORY]],
+  });
+  await checkIfDiscoverVisible(true);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function showPane_false() {
+  await SpecialPowers.pushPrefEnv({
+    set: [[PREF_DISCOVER_ENABLED, false]],
+    clear: [[PREF_UI_LASTCATEGORY]],
+  });
+  await checkIfDiscoverVisible(false);
+  await SpecialPowers.popPrefEnv();
+});