From a8f5f106a39d273f8133d3222ba50e43a3d6d0bb Mon Sep 17 00:00:00 2001
From: Vadim <vadim.turko@gmail.com>
Date: Sat, 12 Aug 2023 15:31:32 +0200
Subject: [PATCH] Trace animated dialog opening

---
 .vscode/launch.json                           |  1 +
 .../widget_dialog_animated_test.dart          | 16 +++++++----
 pubspec.yaml                                  |  2 ++
 test_driver/performance_driver.dart           | 27 +++++++++++++++++++
 test_driver/test_driver.md                    |  9 +++++++
 5 files changed, 50 insertions(+), 5 deletions(-)
 create mode 100644 test_driver/performance_driver.dart
 create mode 100644 test_driver/test_driver.md

diff --git a/.vscode/launch.json b/.vscode/launch.json
index 1d2b113..b139440 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -57,6 +57,7 @@
             "name": "Integration Test",
             "request": "launch",
             "type": "dart",
+            "flutterMode": "profile",
             "args": [
                 "--flavor",
                 "prod",
diff --git a/integration_test/widget_dialog_animated_test.dart b/integration_test/widget_dialog_animated_test.dart
index 5bea94d..c7a9f07 100644
--- a/integration_test/widget_dialog_animated_test.dart
+++ b/integration_test/widget_dialog_animated_test.dart
@@ -9,7 +9,7 @@ import 'package:lightmeter/screens/metering/components/shared/readings_container
 import 'mocks/application_mock.dart';
 
 void main() {
-  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  final binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
   group('AnimatedDialogPicker test', () {
     testWidgets('Tap on `ReadingValueContainer`, verify opened', (tester) async {
@@ -17,10 +17,16 @@ void main() {
       expect(find.text('Film'), findsOneWidget);
       expect(find.text('None'), findsOneWidget);
 
-      await tester.tap(find.byType(AnimatedDialogPicker<Film>));
-      await tester.pumpAndSettle(Dimens.durationL);
-      expect(find.text('Film'), findsNWidgets(2));
-      expect(find.text('None'), findsNWidgets(2));
+      await binding.traceAction(
+        () async {
+          await tester.tap(find.byType(AnimatedDialogPicker<Film>));
+          await tester.pumpAndSettle(Dimens.durationL);
+        },
+        reportKey: 'dialog_opening_timeline',
+      );
+
+      expect(find.text('Film'), findsNWidgets(3));
+      expect(find.text('None'), findsNWidgets(3));
     });
   });
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 9f0fa2a..6fb0faf 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -39,6 +39,8 @@ dependencies:
 dev_dependencies:
   bloc_test: 9.1.3
   build_runner: ^2.1.7
+  flutter_driver:
+    sdk: flutter
   flutter_launcher_icons: 0.11.0
   flutter_native_splash: 2.2.16
   flutter_test:
diff --git a/test_driver/performance_driver.dart b/test_driver/performance_driver.dart
new file mode 100644
index 0000000..e06e259
--- /dev/null
+++ b/test_driver/performance_driver.dart
@@ -0,0 +1,27 @@
+import 'package:flutter_driver/flutter_driver.dart' as driver;
+import 'package:integration_test/integration_test_driver.dart';
+
+Future<void> main() {
+  return integrationDriver(
+    responseDataCallback: (data) async {
+      if (data != null) {
+        final timeline =
+            driver.Timeline.fromJson(data['dialog_opening_timeline'] as Map<String, dynamic>);
+
+        // Convert the Timeline into a TimelineSummary that's easier to
+        // read and understand.
+        final summary = driver.TimelineSummary.summarize(timeline);
+
+        // Then, write the entire timeline to disk in a json format.
+        // This file can be opened in the Chrome browser's tracing tools
+        // found by navigating to chrome://tracing.
+        // Optionally, save the summary to disk by setting includeSummary
+        // to true
+        await summary.writeTimelineToFile(
+          'dialog_opening_timeline',
+          pretty: true,
+        );
+      }
+    },
+  );
+}
diff --git a/test_driver/test_driver.md b/test_driver/test_driver.md
new file mode 100644
index 0000000..81aa51a
--- /dev/null
+++ b/test_driver/test_driver.md
@@ -0,0 +1,9 @@
+Trace actions
+```console
+flutter drive \
+  --driver=test_driver/performance_driver.dart \
+  --target=integration_test/widget_dialog_animated_test.dart \
+  --profile \
+  --flavor=dev \
+  --no-dds
+```
\ No newline at end of file