fix(protocol): Fix inline timing metadata parsing and enhance test coverage for performance metrics and timing edge cases

test/tapbundle/test.timing-edge-cases.ts

@@ -0,0 +1,214 @@
+import { tap, expect } from '../../ts_tapbundle/index.js';
+
+tap.test('ultra-fast test - should capture sub-millisecond timing', async () => {
+  // This test does almost nothing, should complete in < 1ms
+  const x = 1 + 1;
+  expect(x).toEqual(2);
+});
+
+tap.test('test with exact 1ms delay', async (tools) => {
+  const start = Date.now();
+  await tools.delayFor(1);
+  const elapsed = Date.now() - start;
+  // Should be at least 1ms but could be more due to event loop
+  expect(elapsed).toBeGreaterThanOrEqual(1);
+});
+
+tap.test('test with 10ms delay', async (tools) => {
+  await tools.delayFor(10);
+  expect(true).toBeTrue();
+});
+
+tap.test('test with 100ms delay', async (tools) => {
+  await tools.delayFor(100);
+  expect(true).toBeTrue();
+});
+
+tap.test('test with 250ms delay', async (tools) => {
+  await tools.delayFor(250);
+  expect(true).toBeTrue();
+});
+
+tap.test('test with 500ms delay', async (tools) => {
+  await tools.delayFor(500);
+  expect(true).toBeTrue();
+});
+
+tap.test('test with variable processing time', async (tools) => {
+  // Simulate variable processing
+  const iterations = 1000000;
+  let sum = 0;
+  for (let i = 0; i < iterations; i++) {
+    sum += Math.sqrt(i);
+  }
+  expect(sum).toBeGreaterThan(0);
+  
+  // Add a small delay to ensure measurable time
+  await tools.delayFor(5);
+});
+
+tap.test('test with multiple async operations', async () => {
+  // Multiple promises in parallel
+  const results = await Promise.all([
+    new Promise(resolve => setTimeout(() => resolve(1), 10)),
+    new Promise(resolve => setTimeout(() => resolve(2), 20)),
+    new Promise(resolve => setTimeout(() => resolve(3), 30))
+  ]);
+  
+  expect(results).toEqual([1, 2, 3]);
+  // This should take at least 30ms (the longest delay)
+});
+
+tap.test('test with synchronous heavy computation', async () => {
+  // Heavy synchronous computation
+  const fibonacci = (n: number): number => {
+    if (n <= 1) return n;
+    return fibonacci(n - 1) + fibonacci(n - 2);
+  };
+  
+  // Calculate fibonacci(30) - should take measurable time
+  const result = fibonacci(30);
+  expect(result).toEqual(832040);
+});
+
+// Test with retry to see if timing accumulates correctly
+tap.retry(2).test('test with retry - fails first then passes', async (tools) => {
+  // Get or initialize retry count
+  const retryCount = tools.context.get('retryCount') || 0;
+  tools.context.set('retryCount', retryCount + 1);
+  
+  await tools.delayFor(50);
+  
+  if (retryCount === 0) {
+    throw new Error('First attempt fails');
+  }
+  
+  expect(retryCount).toEqual(1);
+});
+
+// Test timeout handling
+tap.timeout(100).test('test with timeout - should complete just in time', async (tools) => {
+  await tools.delayFor(80); // Just under the timeout
+  expect(true).toBeTrue();
+});
+
+// Skip test - should show 0ms
+tap.skip.test('skipped test - should report 0ms', async (tools) => {
+  await tools.delayFor(1000); // This won't execute
+  expect(true).toBeTrue();
+});
+
+// Todo test - should show 0ms
+tap.todo.test('todo test - should report 0ms', async (tools) => {
+  await tools.delayFor(1000); // This won't execute
+  expect(true).toBeTrue();
+});
+
+// Test with skip inside
+tap.test('test that skips conditionally - should show time until skip', async (tools) => {
+  await tools.delayFor(25);
+  
+  const shouldSkip = true;
+  if (shouldSkip) {
+    tools.skip('Skipping after 25ms');
+  }
+  
+  // This won't execute
+  await tools.delayFor(1000);
+  expect(true).toBeTrue();
+});
+
+// Test with very precise timing
+tap.test('test with precise timing measurements', async (tools) => {
+  const measurements: number[] = [];
+  
+  for (let i = 0; i < 5; i++) {
+    const start = process.hrtime.bigint();
+    await tools.delayFor(10);
+    const end = process.hrtime.bigint();
+    const durationMs = Number(end - start) / 1_000_000;
+    measurements.push(durationMs);
+  }
+  
+  // All measurements should be at least 10ms
+  measurements.forEach(m => {
+    expect(m).toBeGreaterThanOrEqual(10);
+  });
+  
+  // But not too much more (accounting for timer precision)
+  measurements.forEach(m => {
+    expect(m).toBeLessThan(20);
+  });
+});
+
+// Test that intentionally has 0 actual work
+tap.test('empty test - absolute minimum execution time', async () => {
+  // Literally nothing
+});
+
+// Test with promise that resolves immediately
+tap.test('test with immediate promise resolution', async () => {
+  await Promise.resolve();
+  expect(true).toBeTrue();
+});
+
+// Test with microtask queue
+tap.test('test with microtask queue processing', async () => {
+  let value = 0;
+  
+  await Promise.resolve().then(() => {
+    value = 1;
+    return Promise.resolve();
+  }).then(() => {
+    value = 2;
+    return Promise.resolve();
+  }).then(() => {
+    value = 3;
+  });
+  
+  expect(value).toEqual(3);
+});
+
+// Test to verify timing accumulation in describe blocks
+tap.describe('timing in describe blocks', () => {
+  let startTime: number;
+  
+  tap.beforeEach(async () => {
+    startTime = Date.now();
+    await new Promise(resolve => setTimeout(resolve, 5));
+  });
+  
+  tap.afterEach(async () => {
+    await new Promise(resolve => setTimeout(resolve, 5));
+  });
+  
+  tap.test('first test in describe', async (tools) => {
+    await tools.delayFor(10);
+    const elapsed = Date.now() - startTime;
+    expect(elapsed).toBeGreaterThanOrEqual(10);
+  });
+  
+  tap.test('second test in describe', async (tools) => {
+    await tools.delayFor(20);
+    const elapsed = Date.now() - startTime;
+    expect(elapsed).toBeGreaterThanOrEqual(20);
+  });
+});
+
+// Parallel tests to see timing differences
+tap.testParallel('parallel test 1 - 100ms', async (tools) => {
+  await tools.delayFor(100);
+  expect(true).toBeTrue();
+});
+
+tap.testParallel('parallel test 2 - 50ms', async (tools) => {
+  await tools.delayFor(50);
+  expect(true).toBeTrue();
+});
+
+tap.testParallel('parallel test 3 - 150ms', async (tools) => {
+  await tools.delayFor(150);
+  expect(true).toBeTrue();
+});
+
+tap.start();