chore: Upgrade to Vitest 4 and regroup tests for performance (#2618)

tests/card-controller/call/manager.test.ts

@@ -29,9 +29,13 @@ import {
 
 // Replace Ringtone with a fresh `mock<Ringtone>()` per construction so each
 // CallManager gets an isolated, type-safe ringtone we can assert on. The
-// real Ringtone creates an AudioContext, which we never want in tests.
+// real Ringtone creates an AudioContext, which we never want in tests. The
+// implementation must be callable with `new`, so it cannot be an arrow
+// function.
 vi.mock('../../../src/card-controller/call/ringtone', () => ({
-  Ringtone: vi.fn().mockImplementation(() => mock<Ringtone>()),
+  Ringtone: vi.fn().mockImplementation(function () {
+    return mock<Ringtone>();
+  }),
 }));
 
 // Each test creates a new CallManager which constructs a new Ringtone, so the

tests/card-controller/call/ringtone.test.ts

@@ -12,20 +12,32 @@ import type { RingtoneConfig } from '../../../src/config/schema/live';
 // Each tone constructor returns a fresh `mock<>()` per `new` call; the mock
 // implementation persists across `vi.clearAllMocks()` (which only clears call
 // records, not implementations) so tests don't need per-test re-installation.
+// The implementations must be callable with `new`, so they cannot be arrow
+// functions.
 vi.mock('../../../src/card-controller/call/tones/chime', () => ({
-  ChimeTone: vi.fn().mockImplementation(() => mock<ChimeTone>()),
+  ChimeTone: vi.fn().mockImplementation(function () {
+    return mock<ChimeTone>();
+  }),
 }));
 vi.mock('../../../src/card-controller/call/tones/westminster', () => ({
-  WestminsterTone: vi.fn().mockImplementation(() => mock<WestminsterTone>()),
+  WestminsterTone: vi.fn().mockImplementation(function () {
+    return mock<WestminsterTone>();
+  }),
 }));
 vi.mock('../../../src/card-controller/call/tones/arpeggio', () => ({
-  ArpeggioTone: vi.fn().mockImplementation(() => mock<ArpeggioTone>()),
+  ArpeggioTone: vi.fn().mockImplementation(function () {
+    return mock<ArpeggioTone>();
+  }),
 }));
 vi.mock('../../../src/card-controller/call/tones/melody', () => ({
-  MelodyTone: vi.fn().mockImplementation(() => mock<MelodyTone>()),
+  MelodyTone: vi.fn().mockImplementation(function () {
+    return mock<MelodyTone>();
+  }),
 }));
 vi.mock('../../../src/card-controller/call/tones/custom', () => ({
-  CustomTone: vi.fn().mockImplementation(() => mock<CustomTone>()),
+  CustomTone: vi.fn().mockImplementation(function () {
+    return mock<CustomTone>();
+  }),
 }));
 
 // Returns the most recently constructed instance of a mocked class.
@@ -187,7 +199,7 @@ describe('lock', () => {
 describe('natural finish', () => {
   it('should release the lock when the tone fires its finished handler', () => {
     let finishedHandler: (() => void) | undefined;
-    vi.mocked(ChimeTone).mockImplementationOnce(() => {
+    vi.mocked(ChimeTone).mockImplementationOnce(function () {
       const tone = mock<ChimeTone>();
       vi.mocked(tone.start).mockImplementation((handler) => {
         finishedHandler = handler;

tests/card-controller/call/tones/custom.test.ts

@@ -8,7 +8,7 @@ interface AudioMocks {
   // and pushed here in construction order, so tests can dispatch real events
   // and read real properties (`loop`, `currentTime`, etc.) on the instances.
   instances: HTMLAudioElement[];
-  ctor: Mock<[string?], HTMLAudioElement>;
+  ctor: Mock<(url?: string) => HTMLAudioElement>;
 }
 
 // Uses real jsdom HTMLAudioElement instances and only stubs the parts jsdom
@@ -33,7 +33,10 @@ const useAudioElementMocks = (): AudioMocks => {
     vi.spyOn(HTMLMediaElement.prototype, 'pause').mockImplementation(() => {});
 
     const RealAudio = window.Audio;
-    handle.ctor = vi.fn((url?: string) => {
+
+    // The source calls `new Audio(...)`, and a mock implementation must be
+    // callable with `new`, so it cannot be an arrow function.
+    handle.ctor = vi.fn(function (url?: string) {
       const audio = new RealAudio(url);
       handle.instances.push(audio);
       return audio;

tests/card-controller/call/tones/test-utils.ts

@@ -10,7 +10,7 @@ import { mock, type MockProxy } from 'vitest-mock-extended';
 // over the same observable state.
 interface AudioMocks {
   audioContext: MockProxy<AudioContext>;
-  audioContextCtor: Mock<[], MockProxy<AudioContext>>;
+  audioContextCtor: Mock<() => MockProxy<AudioContext>>;
 
   // Filled in the order `createOscillator()` / `createGain()` were called.
   oscillators: MockProxy<OscillatorNode>[];
@@ -73,7 +73,11 @@ export const useAudioMocks = (): AudioMocks => {
       configurable: true,
     });
 
-    audio.audioContextCtor = vi.fn(() => audio.audioContext);
+    // The source calls `new AudioContext()`, and a mock implementation must be
+    // callable with `new`, so it cannot be an arrow function.
+    audio.audioContextCtor = vi.fn(function () {
+      return audio.audioContext;
+    });
     vi.stubGlobal('AudioContext', audio.audioContextCtor);
   });