chore: added starting time of test to the base json reporter (#16885)

packages/playwright-test/src/reporters/json.ts

@@ -177,6 +177,7 @@ class JSONReporter implements Reporter {
       stderr: result.stderr.map(s => stdioEntry(s)),
       retry: result.retry,
       steps: steps.length ? steps.map(s => this._serializeTestStep(s)) : undefined,
+      startTime: result.startTime,
       attachments: result.attachments.map(a => ({
         name: a.name,
         contentType: a.contentType,

packages/playwright-test/types/testReporter.d.ts

@@ -493,6 +493,7 @@ export interface JSONReportTestResult {
   stderr: JSONReportSTDIOEntry[];
   retry: number;
   steps?: JSONReportTestStep[];
+  startTime: Date;
   attachments: {
     name: string;
     path?: string;

tests/playwright-test/reporter-json.spec.ts

@@ -235,3 +235,16 @@ test('should add line in addition to file json without CI', async ({ runInlineTe
   expect(stripAnsi(result.output)).toContain('[1/1] a.test.js:6:7 › one');
   expect(fs.existsSync(testInfo.outputPath('a.json'))).toBeTruthy();
 });
+test('should have starting time in results', async ({ runInlineTest }, testInfo) => {
+  const result = await runInlineTest({
+    'a.test.js': `
+      const { test } = pwt;
+      test('math works!', async ({}) => {
+        expect(1 + 1).toBe(2);
+      });
+    `
+  },   { reporter: 'json' });
+  expect(result.exitCode).toBe(0);
+  const startTime = result.report.suites[0].specs[0].tests[0].results[0].startTime;
+  expect(new Date(startTime).getTime()).toBeGreaterThan(new Date('1/1/2000').getTime());
+});

utils/generate_types/overrides-testReporter.d.ts

@@ -104,6 +104,7 @@ export interface JSONReportTestResult {
   stderr: JSONReportSTDIOEntry[];
   retry: number;
   steps?: JSONReportTestStep[];
+  startTime: Date;
   attachments: {
     name: string;
     path?: string;