write perf test for app init

mobile/app_init_perf_test.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# Make sure to go through home_gallery_scroll_test.dart and 
+# fill in email and password.
+# Specify destination directory for the perf results in perf_driver.dart.
+
+
+export ENDPOINT="https://api.ente.io"
+
+flutter drive \
+  --driver=test_driver/perf_driver.dart \
+  --target=integration_test/app_init_test.dart \
+  --dart-define=endpoint=$ENDPOINT \
+  --profile --flavor independent \
+  --no-dds \
+  --keep-app-running
+
+exit $?

mobile/integration_test/app_init_test.dart

@@ -0,0 +1,130 @@
+import "dart:async";
+
+import "package:flutter/material.dart";
+import "package:flutter_test/flutter_test.dart";
+import "package:integration_test/integration_test.dart";
+import "package:logging/logging.dart";
+import "package:photos/main.dart" as app;
+
+void main() {
+  group("App init test", () {
+    final binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+    binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
+    testWidgets("App init test", semanticsEnabled: false, (tester) async {
+      // https://github.com/flutter/flutter/issues/89749#issuecomment-1029965407
+      tester.testTextInput.register();
+
+      await runZonedGuarded(
+        () async {
+          bool skipLogin = false;
+
+          ///Ignore exceptions thrown by the app for the test to pass
+          WidgetsFlutterBinding.ensureInitialized();
+          FlutterError.onError = (FlutterErrorDetails errorDetails) {
+            FlutterError.dumpErrorToConsole(errorDetails);
+          };
+
+          await binding.traceAction(
+            () async {
+              app.main();
+
+              await tester.pumpAndSettle(const Duration(seconds: 1));
+
+              await dismissUpdateAppDialog(tester);
+
+              final signInButton = find.byKey(const ValueKey("signInButton"));
+              skipLogin = !tester.any(signInButton);
+
+              if (!skipLogin) {
+                await tester.tap(signInButton);
+                await tester.pumpAndSettle();
+                final emailInputField = find.byType(TextFormField);
+                final logInButton = find.byKey(const ValueKey("logInButton"));
+                //Fill email id here
+                await tester.enterText(emailInputField, "*enter email here*");
+                await tester.pumpAndSettle(const Duration(seconds: 1));
+                await tester.tap(logInButton);
+                await tester.pumpAndSettle(const Duration(seconds: 3));
+                final passwordInputField =
+                    find.byKey(const ValueKey("passwordInputField"));
+                final verifyPasswordButton =
+                    find.byKey(const ValueKey("verifyPasswordButton"));
+                //Fill password here
+                await tester.enterText(
+                  passwordInputField,
+                  "*enter password here*",
+                );
+                await tester.pumpAndSettle(const Duration(seconds: 1));
+                await tester.tap(verifyPasswordButton);
+                await tester.pumpAndSettle();
+
+                await tester.pumpAndSettle(const Duration(seconds: 1));
+                await dismissUpdateAppDialog(tester);
+
+                //Grant permission to access photos. Must manually click the system dialog.
+                final grantPermissionButton =
+                    find.byKey(const ValueKey("grantPermissionButton"));
+                await tester.tap(grantPermissionButton);
+                await tester.pumpAndSettle(const Duration(seconds: 1));
+                await tester.pumpAndSettle(const Duration(seconds: 3));
+
+                //Automatically skips backup
+                final skipBackupButton =
+                    find.byKey(const ValueKey("skipBackupButton"));
+                await tester.tap(skipBackupButton);
+                await tester.pumpAndSettle(const Duration(seconds: 2));
+              }
+            },
+            reportKey: "app_init_summary",
+          );
+        },
+        (error, stack) {
+          Logger("app_init_test").info(error, stack);
+        },
+      );
+    });
+  });
+}
+
+Future<void> dismissUpdateAppDialog(WidgetTester tester) async {
+  await tester.tapAt(const Offset(0, 0));
+  await tester.pumpAndSettle();
+}
+
+
+///Use this widget as floating action buttom in HomeWidget so that frames
+///are built and rendered continuously so that timeline trace has continuous 
+///data. Change the duraiton in `_startTimer()` to control the duraiton of 
+///test on app init.
+
+// class TempWidget extends StatefulWidget {
+//   const TempWidget({super.key});
+
+//   @override
+//   TempWidgetState createState() => TempWidgetState();
+// }
+
+// class TempWidgetState extends State<TempWidget> {
+//   bool _isLoading = true;
+
+//   @override
+//   void initState() {
+//     super.initState();
+//     _startTimer();
+//   }
+
+//   void _startTimer() {
+//     Future.delayed(const Duration(seconds: 20), () {
+//       setState(() {
+//         _isLoading = false;
+//       });
+//     });
+//   }
+
+//   @override
+//   Widget build(BuildContext context) {
+//     return _isLoading
+//         ? const CircularProgressIndicator()
+//         : const SizedBox.shrink();
+//   }
+// }

mobile/test_driver/perf_driver.dart

@@ -8,13 +8,14 @@ Future<void> main() {
     responseDataCallback: (data) async {
       if (data != null) {
         final timeline = driver.Timeline.fromJson(
-          data['home_gallery_scrolling_summary'] as Map<String, dynamic>,
+          data['*`report_key` of traceAction of integration test*']
+              as Map<String, dynamic>,
         );
 
         final summary = driver.TimelineSummary.summarize(timeline);
 
         await summary.writeTimelineToFile(
-          'home_gallery_scrolling_summary',
+          '*title of file*',
           pretty: true,
           includeSummary: true,
           //Specify destination directory for the timeline files.