fix: Address PR comments

* ref: Switch from isBrowser -> ignoreDuration
* test: Add sanity check test for sec to ms conversion
* ref: Update session.close tests to assert on session
  instead of spying on implementation

Author: AbhiPrasad

packages/browser/src/sdk.ts

@@ -199,7 +199,11 @@ function startSessionTracking(): void {
     return;
   }
 
-  hub.startSession({ isBrowser: true });
+  // The session duration for browser sessions does not track a meaningful
+  // concept that can be used as a metric.
+  // Automatically captured sessions are akin to page views, and thus we
+  // discard their duration.
+  hub.startSession({ ignoreDuration: true });
   hub.captureSession();
 
   // We want to create a session for every navigation as well
@@ -209,7 +213,7 @@ function startSessionTracking(): void {
       if (from === undefined || from === to) {
         return;
       }
-      hub.startSession({ isBrowser: true });
+      hub.startSession({ ignoreDuration: true });
       hub.captureSession();
     },
     type: 'history',

packages/hub/src/session.ts

@@ -28,7 +28,7 @@ export class Session implements SessionInterface {
   public environment?: string;
   public ipAddress?: string;
   public init: boolean = true;
-  public isBrowser: boolean = false;
+  public ignoreDuration: boolean = false;
 
   public constructor(context?: Omit<SessionContext, 'started' | 'status'>) {
     // Both timestamp and started are in seconds since the UNIX epoch.
@@ -54,8 +54,8 @@ export class Session implements SessionInterface {
     }
 
     this.timestamp = context.timestamp || timestampInSeconds();
-    if (context.isBrowser) {
-      this.isBrowser = context.isBrowser;
+    if (context.ignoreDuration) {
+      this.ignoreDuration = context.ignoreDuration;
     }
     if (context.sid) {
       // Good enough uuid validation. — Kamil
@@ -70,11 +70,7 @@ export class Session implements SessionInterface {
     if (typeof context.started === 'number') {
       this.started = context.started;
     }
-    // The session duration for browser sessions does not track a meaningful
-    // concept that can be used as a metric.
-    // Automatically captured sessions are akin to page views, and thus we
-    // discard their duration.
-    if (this.isBrowser) {
+    if (this.ignoreDuration) {
       this.duration = undefined;
     } else if (typeof context.duration === 'number') {
       this.duration = context.duration;

packages/hub/test/session.test.ts

@@ -7,24 +7,23 @@ describe('Session', () => {
   it('initializes with the proper defaults', () => {
     const session = new Session().toJSON();
 
-    const sessionStartTime = session.timestamp;
-
+    // Grab current year to check if we are converting from sec -> ms correctly
+    const currentYear = new Date(timestampInSeconds() * 1000).toISOString().slice(0, 4);
     expect(session).toEqual({
       attrs: {},
       duration: 0,
       errors: 0,
       init: true,
       sid: expect.any(String),
-      started: expect.any(String),
+      started: expect.stringMatching(currentYear),
       status: SessionStatus.Ok,
-      timestamp: expect.any(String),
+      timestamp: expect.stringMatching(currentYear),
     });
 
     expect(session.sid).toHaveLength(32);
 
     // started and timestamp should be the same on creation
-    expect(session.started).toEqual(sessionStartTime);
-    expect(session.timestamp).toEqual(sessionStartTime);
+    expect(session.started).toEqual(session.timestamp);
   });
 
   describe('update', () => {
@@ -41,9 +40,13 @@ describe('Session', () => {
       ['sets an did', { did: 'specialID123' }, { did: 'specialID123' }],
       ['overwrites user did with custom did', { did: 'custom-did', user: { id: 'user-id' } }, { did: 'custom-did' }],
       ['sets a started time', { started: time }, { started: new Date(time * 1000).toISOString() }],
-      ['does not set a duration for browser env', { isBrowser: true }, { duration: undefined }],
+      ['does not set a duration for browser env', { ignoreDuration: true }, { duration: undefined }],
       ['sets a duration', { duration: 12000 }, { duration: 12000 }],
-      ['does not use custom duration for browser env', { duration: 12000, isBrowser: true }, { duration: undefined }],
+      [
+        'does not use custom duration for browser env',
+        { duration: 12000, ignoreDuration: true },
+        { duration: undefined },
+      ],
       [
         'does not set a negative duration',
         { timestamp: 10, started: 100 },
@@ -88,30 +91,26 @@ describe('Session', () => {
   describe('close', () => {
     it('exits a normal session', () => {
       const session = new Session();
-      const mockUpdate = jest.spyOn(session, 'update');
-      expect(mockUpdate).toHaveBeenCalledTimes(0);
+      expect(session.status).toEqual(SessionStatus.Ok);
       session.close();
-      expect(mockUpdate).toHaveBeenCalledTimes(1);
-      expect(mockUpdate).toHaveBeenLastCalledWith({ status: SessionStatus.Exited });
+      expect(session.status).toEqual(SessionStatus.Exited);
     });
 
     it('updates session status when give status', () => {
       const session = new Session();
-      const mockUpdate = jest.spyOn(session, 'update');
+      expect(session.status).toEqual(SessionStatus.Ok);
 
-      session.close(SessionStatus.Crashed);
-      expect(mockUpdate).toHaveBeenCalledTimes(1);
-      expect(mockUpdate).toHaveBeenLastCalledWith({ status: SessionStatus.Crashed });
+      session.close(SessionStatus.Abnormal);
+      expect(session.status).toEqual(SessionStatus.Abnormal);
     });
 
-    it('only changes status ok', () => {
+    it('only changes status ok to exited', () => {
       const session = new Session();
-      session.status = SessionStatus.Abnormal;
-      const mockUpdate = jest.spyOn(session, 'update');
+      session.update({ status: SessionStatus.Crashed });
+      expect(session.status).toEqual(SessionStatus.Crashed);
 
       session.close();
-      expect(mockUpdate).toHaveBeenCalledTimes(1);
-      expect(mockUpdate).toHaveBeenLastCalledWith();
+      expect(session.status).toEqual(SessionStatus.Crashed);
     });
   });
 });

packages/types/src/session.ts

@@ -53,7 +53,7 @@ export interface SessionContext {
   errors?: number;
   user?: User | null;
   // Sessions are handled differently in browser environments
-  isBrowser?: boolean;
+  ignoreDuration?: boolean;
 }
 
 /**