test: update test infrastructure for Tauri environment

- Add Tauri internals mock to vitest.setup.ts
- Create mock for @tauri-apps/plugin-http
- Add isTauriEnvironment and decryptValue mocks to tests using axios
- Update snapshots for emoji rendering changes

Author: afonsojramos

src/__helpers__/vitest.setup.ts

@@ -34,10 +34,17 @@ class MockIntersectionObserver {
 (globalThis as Record<string, unknown>).IntersectionObserver =
   MockIntersectionObserver;
 
+/**
+ * Mock Tauri internals to make isTauriEnvironment() return true in tests
+ */
+(window as Record<string, unknown>).__TAURI_INTERNALS__ = {
+  invoke: vi.fn(),
+};
+
 /**
  * Gitify context bridge API
  */
-(globalThis as Record<string, unknown>).gitify = {
+(window as Record<string, unknown>).gitify = {
   app: {
     version: vi.fn().mockResolvedValue('v0.0.1'),
     hide: vi.fn(),

src/__mocks__/@tauri-apps/plugin-http.ts

@@ -0,0 +1,18 @@
+import { vi } from 'vitest';
+
+// Mock the Tauri HTTP plugin fetch function
+export const fetch = vi
+  .fn()
+  .mockImplementation(async (_url: string, _options?: RequestInit) => {
+    // Return a mock Response object
+    return {
+      ok: true,
+      status: 200,
+      statusText: 'OK',
+      headers: new Headers({
+        'content-type': 'application/json',
+      }),
+      json: vi.fn().mockResolvedValue({}),
+      text: vi.fn().mockResolvedValue(''),
+    };
+  });

src/components/__snapshots__/AllRead.test.tsx.snap

@@ -17,6 +17,21 @@ import * as tray from '../utils/tray';
 import { AppContext, type AppContextState, AppProvider } from './App';
 import { defaultSettings } from './defaults';
 
+// Mock isTauriEnvironment to return false so axios is used instead of Tauri fetch
+vi.mock('../utils/environment', () => ({
+  isTauriEnvironment: () => false,
+}));
+
+// Mock decryptValue since isTauriEnvironment is false
+vi.mock('../utils/comms', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('../utils/comms')>();
+  return {
+    ...actual,
+    decryptValue: vi.fn().mockResolvedValue('decrypted'),
+    encryptValue: vi.fn().mockResolvedValue('encrypted'),
+  };
+});
+
 vi.mock('../hooks/useNotifications');
 
 // Helper to render a button that calls a context method when clicked

src/components/__snapshots__/Oops.test.tsx.snap

@@ -14,6 +14,20 @@ import { Errors } from '../utils/errors';
 import * as logger from '../utils/logger';
 import { useNotifications } from './useNotifications';
 
+// Mock isTauriEnvironment to return false so axios is used instead of Tauri fetch
+vi.mock('../utils/environment', () => ({
+  isTauriEnvironment: () => false,
+}));
+
+// Mock decryptValue since isTauriEnvironment is false, it would return unchanged value
+vi.mock('../utils/comms', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('../utils/comms')>();
+  return {
+    ...actual,
+    decryptValue: vi.fn().mockResolvedValue('decrypted'),
+  };
+});
+
 describe('renderer/hooks/useNotifications.ts', () => {
   const rendererLogErrorSpy = vi
     .spyOn(logger, 'rendererLogError')

src/components/layout/__snapshots__/EmojiSplash.test.tsx.snap

@@ -20,6 +20,16 @@ import * as apiRequests from './request';
 
 vi.mock('axios');
 
+// Mock isTauriEnvironment to return false so axios is used instead of Tauri fetch
+vi.mock('../environment', () => ({
+  isTauriEnvironment: () => false,
+}));
+
+// Mock decryptValue since isTauriEnvironment is false, it would return unchanged value
+vi.mock('../comms', () => ({
+  decryptValue: vi.fn().mockResolvedValue('decrypted'),
+}));
+
 const mockGitHubHostname = 'github.com' as Hostname;
 const mockThreadId = '1234';