chore: hide tracing calls from traces (#27096)

packages/playwright-core/src/client/tracing.ts

@@ -44,7 +44,7 @@ export class Tracing extends ChannelOwner<channels.TracingChannel> implements ap
       });
       const response = await this._channel.tracingStartChunk({ name: options.name, title: options.title });
       return response.traceName;
-    });
+    }, true);
     await this._startCollectingStacks(traceName);
   }
 
@@ -63,14 +63,16 @@ export class Tracing extends ChannelOwner<channels.TracingChannel> implements ap
   }
 
   async stopChunk(options: { path?: string } = {}) {
-    await this._doStopChunk(options.path);
+    await this._wrapApiCall(async () => {
+      await this._doStopChunk(options.path);
+    }, true);
   }
 
   async stop(options: { path?: string } = {}) {
     await this._wrapApiCall(async () => {
       await this._doStopChunk(options.path);
       await this._channel.tracingStop();
-    });
+    }, true);
   }
 
   private async _doStopChunk(filePath: string | undefined) {

tests/library/browsercontext-reuse.spec.ts

@@ -249,7 +249,7 @@ test('should reset tracing', async ({ reusedContext, trace }, testInfo) => {
   await page.evaluate('2 + 2');
 
   const error = await context.tracing.stopChunk({ path: testInfo.outputPath('trace.zip') }).catch(e => e);
-  expect(error.message).toContain('tracing.stopChunk: Must start tracing before stopping');
+  expect(error.message).toContain('Must start tracing before stopping');
 });
 
 test('should continue issuing events after closing the reused page', async ({ reusedContext, server }) => {

tests/library/inspector/pause.spec.ts

@@ -231,8 +231,6 @@ it.describe('pause', () => {
     await recorderPage.waitForSelector('.source-line-paused:has-text("page.pause();  // 2")');
     expect(await sanitizeLog(recorderPage)).toEqual([
       'page.pause- XXms',
-      'tracing.start- XXms',
-      'tracing.stop- XXms',
       'page.pause',
     ]);
     await recorderPage.click('[title="Resume (F8)"]');

tests/playwright-test/playwright.trace.spec.ts

@@ -91,12 +91,10 @@ test('should record api trace', async ({ runInlineTest, server }, testInfo) => {
     'Before Hooks',
     '  fixture: request',
     '    apiRequest.newContext',
-    '    tracing.start',
     '  fixture: browser',
     '    browserType.launch',
     '  fixture: context',
     '    browser.newContext',
-    '    tracing.start',
     '  fixture: page',
     '    browserContext.newPage',
     'page.goto',
@@ -105,14 +103,12 @@ test('should record api trace', async ({ runInlineTest, server }, testInfo) => {
     '  fixture: page',
     '  fixture: context',
     '  fixture: request',
-    '    tracing.stopChunk',
     '    apiRequestContext.dispose',
   ]);
   const trace2 = await parseTrace(testInfo.outputPath('test-results', 'a-api-pass', 'trace.zip'));
   expect(trace2.actionTree).toEqual([
     'Before Hooks',
     'apiRequest.newContext',
-    'tracing.start',
     'apiRequestContext.get',
     'After Hooks',
   ]);
@@ -121,10 +117,8 @@ test('should record api trace', async ({ runInlineTest, server }, testInfo) => {
     'Before Hooks',
     '  fixture: request',
     '    apiRequest.newContext',
-    '    tracing.start',
     '  fixture: context',
     '    browser.newContext',
-    '    tracing.start',
     '  fixture: page',
     '    browserContext.newPage',
     'page.goto',
@@ -134,7 +128,6 @@ test('should record api trace', async ({ runInlineTest, server }, testInfo) => {
     '  fixture: page',
     '  fixture: context',
     '  fixture: request',
-    '    tracing.stopChunk',
     '    apiRequestContext.dispose',
   ]);
 });
@@ -327,7 +320,6 @@ test('should not override trace file in afterAll', async ({ runInlineTest, serve
     '    browserType.launch',
     '  fixture: context',
     '    browser.newContext',
-    '    tracing.start',
     '  fixture: page',
     '    browserContext.newPage',
     'page.goto',
@@ -339,10 +331,8 @@ test('should not override trace file in afterAll', async ({ runInlineTest, serve
     '  afterAll hook',
     '    fixture: request',
     '      apiRequest.newContext',
-    '      tracing.start',
     '    apiRequestContext.get',
     '  fixture: request',
-    '    tracing.stopChunk',
     '    apiRequestContext.dispose',
   ]);
 
@@ -636,7 +626,6 @@ test('should expand expect.toPass', async ({ runInlineTest }, testInfo) => {
     '    browserType.launch',
     '  fixture: context',
     '    browser.newContext',
-    '    tracing.start',
     '  fixture: page',
     '    browserContext.newPage',
     'expect.toPass',
@@ -676,7 +665,6 @@ test('should show non-expect error in trace', async ({ runInlineTest }, testInfo
     '    browserType.launch',
     '  fixture: context',
     '    browser.newContext',
-    '    tracing.start',
     '  fixture: page',
     '    browserContext.newPage',
     'expect.toBe',
@@ -757,7 +745,6 @@ test('should use custom expect message in trace', async ({ runInlineTest }, test
     '    browserType.launch',
     '  fixture: context',
     '    browser.newContext',
-    '    tracing.start',
     '  fixture: page',
     '    browserContext.newPage',
     'expect to have text: find a hotel',