1 files changed, 77 insertions, 0 deletions

diff --git a/packages/main/src/reactions/__tests__/synchronizeNativeTheme.test.ts b/packages/main/src/reactions/__tests__/synchronizeNativeTheme.test.ts
new file mode 100644
index 0000000..c89f989
--- /dev/null
+++ b/packages/main/src/reactions/__tests__/synchronizeNativeTheme.test.ts
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C)  2021-2022 Kristóf Marussy <kristof@marussy.com>
+ *
+ * This file is part of Sophie.
+ *
+ * Sophie is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { jest } from '@jest/globals';
+import { mocked } from 'jest-mock';
+
+import SharedStore from '../../stores/SharedStore.js';
+import type Disposer from '../../utils/Disposer.js';
+
+let shouldUseDarkColors = false;
+
+jest.unstable_mockModule('electron', () => ({
+  nativeTheme: {
+    themeSource: 'system',
+    get shouldUseDarkColors() {
+      return shouldUseDarkColors;
+    },
+    on: jest.fn(),
+    off: jest.fn(),
+  },
+}));
+
+const { nativeTheme } = await import('electron');
+const { default: synchronizeNativeTheme } = await import(
+  '../synchronizeNativeTheme.js'
+);
+
+let store: SharedStore;
+let disposeSut: Disposer;
+
+beforeEach(() => {
+  store = SharedStore.create();
+  disposeSut = synchronizeNativeTheme(store);
+});
+
+test('should register a nativeTheme updated listener', () => {
+  expect(nativeTheme.on).toHaveBeenCalledWith('updated', expect.anything());
+});
+
+test('should synchronize themeSource changes to the nativeTheme', () => {
+  store.settings.setThemeSource('dark');
+  expect(nativeTheme.themeSource).toBe('dark');
+});
+
+test('should synchronize shouldUseDarkColors changes to the store', () => {
+  const listener = mocked(nativeTheme.on).mock.calls.find(
+    ([event]) => event === 'updated',
+  )![1];
+  shouldUseDarkColors = true;
+  listener();
+  expect(store.shouldUseDarkColors).toBe(true);
+});
+
+test('should remove the listener on dispose', () => {
+  const listener = mocked(nativeTheme.on).mock.calls.find(
+    ([event]) => event === 'updated',
+  )![1];
+  disposeSut();
+  expect(nativeTheme.off).toHaveBeenCalledWith('updated', listener);
+});