[RUMF-407] improve resource timings collection

test/e2e/scenario/agents.scenario.ts

@@ -81,6 +81,16 @@ describe('rum', () => {
     expectToHaveValidTimings(timing!)
   })
 
+  it('should track redirect xhr timings', async () => {
+    const timing = await makeXHRAndCollectEvent(`${serverUrl.sameOrigin}/redirect/1`)
+    expect(timing!).not.toBeUndefined()
+    expect(timing!.http.method).toEqual('GET')
+    expect((timing!.http as any).status_code).toEqual(200)
+    expectToHaveValidTimings(timing!)
+    expect(timing!.http.performance!.redirect).not.toBeUndefined()
+    expect(timing!.http.performance!.redirect!.duration).toBeGreaterThan(0)
+  })
+
   it('should not track disallowed cross origin xhr timings', async () => {
     const timing = await makeXHRAndCollectEvent(`${serverUrl.crossOrigin}/ok`)
     expect(timing).not.toBeUndefined()

test/server/fake-backend.js

@@ -38,6 +38,15 @@ module.exports = (app) => {
     }
     res.send('ok')
   })
+
+  app.get('/redirect/:n', (req, res) => {
+    const n = Number(req.params.n)
+    if (!isNaN(n) && n > 1) {
+      res.redirect(`${n - 1}`)
+    } else {
+      res.redirect('../ok')
+    }
+  })
 }
 
 function send(res, data) {