feat(stats): add v1 immersion stats dashboard (#19)

src/window-trackers/macos-tracker.test.ts

@@ -0,0 +1,172 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { MacOSWindowTracker } from './macos-tracker';
+
+test('MacOSWindowTracker keeps the last geometry through a single helper miss', async () => {
+  let callIndex = 0;
+  const outputs = [
+    { stdout: '10,20,1280,720,1', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+    { stdout: '10,20,1280,720,1', stderr: '' },
+  ];
+
+  const tracker = new MacOSWindowTracker('/tmp/mpv.sock', {
+    resolveHelper: () => ({
+      helperPath: 'helper.swift',
+      helperType: 'swift',
+    }),
+    runHelper: async () => outputs[callIndex++] ?? outputs.at(-1)!,
+    trackingLossGraceMs: 0,
+  });
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.deepEqual(tracker.getGeometry(), {
+    x: 10,
+    y: 20,
+    width: 1280,
+    height: 720,
+  });
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.deepEqual(tracker.getGeometry(), {
+    x: 10,
+    y: 20,
+    width: 1280,
+    height: 720,
+  });
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.deepEqual(tracker.getGeometry(), {
+    x: 10,
+    y: 20,
+    width: 1280,
+    height: 720,
+  });
+});
+
+test('MacOSWindowTracker drops tracking after consecutive helper misses', async () => {
+  let callIndex = 0;
+  const outputs = [
+    { stdout: '10,20,1280,720,1', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+  ];
+
+  const tracker = new MacOSWindowTracker('/tmp/mpv.sock', {
+    resolveHelper: () => ({
+      helperPath: 'helper.swift',
+      helperType: 'swift',
+    }),
+    runHelper: async () => outputs[callIndex++] ?? outputs.at(-1)!,
+    trackingLossGraceMs: 0,
+  });
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), false);
+  assert.equal(tracker.getGeometry(), null);
+});
+
+test('MacOSWindowTracker keeps tracking through repeated helper misses inside grace window', async () => {
+  let callIndex = 0;
+  let now = 1_000;
+  const outputs = [
+    { stdout: '10,20,1280,720,1', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+  ];
+
+  const tracker = new MacOSWindowTracker('/tmp/mpv.sock', {
+    resolveHelper: () => ({
+      helperPath: 'helper.swift',
+      helperType: 'swift',
+    }),
+    runHelper: async () => outputs[callIndex++] ?? outputs.at(-1)!,
+    now: () => now,
+    trackingLossGraceMs: 1_500,
+  });
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  now += 250;
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  now += 250;
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  now += 250;
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+  assert.deepEqual(tracker.getGeometry(), {
+    x: 10,
+    y: 20,
+    width: 1280,
+    height: 720,
+  });
+});
+
+test('MacOSWindowTracker drops tracking after grace window expires', async () => {
+  let callIndex = 0;
+  let now = 1_000;
+  const outputs = [
+    { stdout: '10,20,1280,720,1', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+    { stdout: 'not-found', stderr: '' },
+  ];
+
+  const tracker = new MacOSWindowTracker('/tmp/mpv.sock', {
+    resolveHelper: () => ({
+      helperPath: 'helper.swift',
+      helperType: 'swift',
+    }),
+    runHelper: async () => outputs[callIndex++] ?? outputs.at(-1)!,
+    now: () => now,
+    trackingLossGraceMs: 500,
+  });
+
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  now += 250;
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  now += 250;
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  now += 250;
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), true);
+
+  now += 250;
+  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(tracker.isTracking(), false);
+  assert.equal(tracker.getGeometry(), null);
+});