2 files changed, 109 insertions, 0 deletions
diff --git a/browser/themes/test/browser/browser.toml b/browser/themes/test/browser/browser.toml
new file mode 100644
index 0000000000..c958cf533c
--- /dev/null
+++ b/browser/themes/test/browser/browser.toml
@@ -0,0 +1,3 @@
+[DEFAULT]
+
+["browser_expireThemes.js"]
diff --git a/browser/themes/test/browser/browser_expireThemes.js b/browser/themes/test/browser/browser_expireThemes.js
new file mode 100644
index 0000000000..c2dede20e3
--- /dev/null
+++ b/browser/themes/test/browser/browser_expireThemes.js
@@ -0,0 +1,106 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const { sinon } = ChromeUtils.importESModule(
+  "resource://testing-common/Sinon.sys.mjs"
+);
+
+const { AddonTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/AddonTestUtils.sys.mjs"
+);
+
+ChromeUtils.defineESModuleGetters(this, {
+  AddonManager: "resource://gre/modules/AddonManager.sys.mjs",
+  BuiltInThemes: "resource:///modules/BuiltInThemes.sys.mjs",
+});
+
+const kLushSoftID = "lush-soft-colorway@mozilla.org";
+const kLushBoldID = "lush-bold-colorway@mozilla.org";
+const kRetainedThemesPref = "browser.theme.retainedExpiredThemes";
+
+add_task(async function retainExpiredActiveTheme() {
+  let today = new Date().toISOString().split("T")[0];
+  let tomorrow = new Date();
+  tomorrow.setDate(tomorrow.getDate() + 1);
+  tomorrow = tomorrow.toISOString().split("T")[0];
+  let config = new Map([
+    [
+      kLushSoftID,
+      {
+        version: "1.1",
+        path: "resource://builtin-themes/colorways/2021lush/soft/",
+        expiry: tomorrow,
+      },
+    ],
+    [
+      kLushBoldID,
+      {
+        version: "1.1",
+        path: "resource://builtin-themes/colorways/2021lush/bold/",
+        expiry: tomorrow,
+      },
+    ],
+  ]);
+  const oldBuiltInThemeMap = BuiltInThemes.builtInThemeMap;
+  BuiltInThemes.builtInThemeMap = config;
+  Assert.equal(
+    Services.prefs.getStringPref(kRetainedThemesPref, "[]"),
+    "[]",
+    "There are no retained themes."
+  );
+
+  AddonTestUtils.initMochitest(this);
+  registerCleanupFunction(async function () {
+    Services.prefs.clearUserPref(kRetainedThemesPref);
+    BuiltInThemes.builtInThemeMap = oldBuiltInThemeMap;
+    await BuiltInThemes.ensureBuiltInThemes();
+  });
+
+  // Install our test themes and enable Lush (Soft).
+  await BuiltInThemes.ensureBuiltInThemes();
+  let lushSoft = await AddonManager.getAddonByID(kLushSoftID);
+  let lushBold = await AddonManager.getAddonByID(kLushBoldID);
+  await lushSoft.enable();
+  Assert.ok(
+    lushSoft && lushSoft.isActive,
+    "Sanity check: Lush Soft is the active theme."
+  );
+  Assert.ok(
+    lushBold && !lushBold.isActive,
+    "Lush Bold is installed but inactive."
+  );
+
+  // Now, change the expiry dates on the themes to simulate the expiry date
+  // passing.
+  BuiltInThemes.builtInThemeMap.forEach(
+    themeInfo => (themeInfo.expiry = today)
+  );
+  // Normally, ensureBuiltInThemes uninstalls expired themes. We
+  // expect it will not uninstall Lush (Soft) since it is the active theme.
+  await BuiltInThemes.ensureBuiltInThemes();
+  lushSoft = await AddonManager.getAddonByID(kLushSoftID);
+  lushBold = await AddonManager.getAddonByID(kLushBoldID);
+  Assert.ok(
+    lushSoft && lushSoft.isActive,
+    "Lush Soft is still the active theme."
+  );
+  Assert.ok(!lushBold, "Lush Bold has been uninstalled.");
+  Assert.equal(
+    Services.prefs.getStringPref(kRetainedThemesPref, "[]"),
+    JSON.stringify([kLushSoftID]),
+    "Lush Soft is set as a retained theme."
+  );
+
+  // Disable Lush (Soft) and re-run ensureBuiltInThemes. We're checking that
+  // Lush Soft is not uninstalled despite being inactive and expired, since it
+  // is a retained theme.
+  await lushSoft.disable();
+  await BuiltInThemes.ensureBuiltInThemes();
+  lushSoft = await AddonManager.getAddonByID(kLushSoftID);
+  Assert.ok(
+    lushSoft && !lushSoft.isActive,
+    "Lush Soft is installed but inactive."
+  );
+
+  await lushSoft.uninstall();
+});