refactor: migrate test , test_driver , test_goldens

[amanv8060]

Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.

part of #527

If you had to change anything in the flutter/tests repo, include a link to the migration guide as per the breaking change policy.

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I read the Flutter Style Guide recently, and have followed its advice.
• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or this PR is test-exempt.
• All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel on Discord.

[amanv8060]

Output of : flutter drive --profile --trace-startup -t test_driver/transitions_perf.dart -d <device>

Logs

Running "flutter pub get" in gallery...                            12.1s
Shrinking has been disabled for this build due to deferred components. Shrinking is not available for multi-apk applications. This limitation is expected to be removed when Gradle plugin 4.2+ is available in Flutter.
../../../../.pub-cache/hosted/pub.dartlang.org/animations-2.0.2/lib/src/open_container.dart:631:24: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
 - 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('../../../flutterm/packages/flutter/lib/src/scheduler/binding.dart').
      SchedulerBinding.instance!
                       ^
../../../../.pub-cache/hosted/pub.dartlang.org/animations-2.0.2/lib/src/open_container.dart:665:24: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
 - 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('../../../flutterm/packages/flutter/lib/src/scheduler/binding.dart').
      SchedulerBinding.instance!
                       ^
Running Gradle task 'assembleProfile'...                           64.5s
✓  Built build/app/outputs/flutter-apk/app-profile.apk (96.5MB).
Installing build/app/outputs/flutter-apk/app.apk...                10.4s
W/FlutterActivityAndFragmentDelegate(28300): A splash screen was provided to Flutter, but this is deprecated. See flutter.dev/go/android-splash-migration for migration steps.
D/ViewRootImpl[MainActivity](28300): hardware acceleration = true , fakeHwAccelerated = false, sRendererDisabled = false, forceHwAccelerated = false, sSystemRendererDisabled = false
D/DecorView[](28300): getWindowModeFromSystem  windowmode is 1
I/InputTransport(28300): Create ARC handle: 0xb40000707547ee20
V/PhoneWindow(28300): DecorView setVisiblity: visibility = 0, Parent = android.view.ViewRootImpl@88b20bf, this = DecorView@9f1538c[MainActivity]
W/Looper  (28300): PerfMonitor looperActivity : package=io.flutter.demo.gallery/.MainActivity time=254ms latency=351ms running=142ms  procState=2 ClientTransaction{ callbacks=[android.app.servertransaction.LaunchActivityItem]
lifecycleRequest=android.app.servertransaction.ResumeActivityItem } historyMsgCount=1 (msgIndex=1 wall=351ms seq=3 running=193ms runnable=122ms late=4ms h=android.app.ActivityThread$H w=110)
W/Looper  (28300): PerfMonitor looperActivity : package=io.flutter.demo.gallery/.MainActivity time=0ms latency=606ms running=0ms  procState=2 ClientTransaction{ callbacks=[android.app.servertransaction.TopResumedActivityChangeItem]
} historyMsgCount=2 (msgIndex=1 wall=351ms seq=3 running=193ms runnable=122ms late=4ms h=android.app.ActivityThread$H w=110) (msgIndex=2 wall=254ms seq=4 running=142ms runnable=22ms late=351ms h=android.app.ActivityThread$H w=159)
D/libMEOW (28300): applied 1 plugins for [io.flutter.demo.gallery]:
D/libMEOW (28300):   plugin 1: [libMEOW_gift.so]:
D/SurfaceView(28300): UPDATE null, mIsCastMode = false
I/GED     (28300): [GT]_get_procNameprocess pid(28300)
I/GED     (28300): [GT]_getprocess name(io.flutter.demo.gallery)
I/er.demo.galler(28300): [GT] ret(1) gt_status(00000000) aniso_debug_level(0) gt_aniso_max_level(16) ani so mask(00000001) tri mask(00000002)
I/libMEOW_gift(28300): ctx:0xb400007029d16f20, ARC not Enabled.
D/libMEOW (28300): applied 1 plugins for [io.flutter.demo.gallery]:
D/libMEOW (28300):   plugin 1: [libMEOW_gift.so]:
E/ion     (28300): ioctl c0044901 failed with code -1: Invalid argument
00:00 +0: Flutter Gallery transitions (setUpAll)

VMServiceFlutterDriver: Connecting to Flutter application at http://127.0.0.1:40295/9dKNEu9EAV0=/
VMServiceFlutterDriver: Isolate found with number: 3414810770675599
VMServiceFlutterDriver: Isolate is paused at start.
VMServiceFlutterDriver: Attempting to resume isolate
VMServiceFlutterDriver: Connected to Flutter application.
00:00 +0: Flutter Gallery transitions only Crane

00:00 +1: Flutter Gallery transitions only Reply

00:00 +2: Flutter Gallery transitions all demos

> reply@study
scrolling to demo
tapping demo
tapping demo
< Success
> shrine@study
scrolling to demo
tapping demo
tapping demo
< Success
> rally@study
scrolling to demo
tapping demo
tapping demo
< Success
> crane@study
scrolling to demo
tapping demo
I/er.demo.galler(28300): ProcessProfilingInfo new_methods=1179 is saved saved_to_disk=1 resolve_classes_delay=8000
tapping demo
< Success
> fortnightly@study
scrolling to demo
tapping demo
tapping demo
< Success
> bottom-navigation@material
scrolling to top
scrolling to material category
scrolling to demo
tapping demo
tapping demo
< Success
> button@material
scrolling to demo
tapping demo
tapping demo
< Success
> card@material
scrolling to demo
tapping demo
tapping demo
< Success
> chip@material
scrolling to demo
tapping demo
tapping demo
< Success
> dialog@material
scrolling to demo
tapping demo
tapping demo
< Success
> pickers@material
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-alerts@cupertino
scrolling to top
scrolling to cupertino category
scrolling to demo
tapping demo
tapping demo
< Success
> colors@other
scrolling to top
scrolling to other category
scrolling to demo
tapping demo
tapping demo
< Success
scrolling to top
I/er.demo.galler(28300): Compiler allocated 4379KB to compile void android.view.ViewRootImpl.performTraversals()
> starter@study
scrolling to demo
tapping demo
tapping demo
< Success
> app-bar@material
scrolling to top
scrolling to material category
scrolling to demo
tapping demo
tapping demo
< Success
> banner@material
scrolling to demo
tapping demo
tapping demo
< Success
> bottom-app-bar@material
scrolling to demo
tapping demo
tapping demo
< Success
> bottom-sheet@material
scrolling to demo
tapping demo
tapping demo
< Success
> data-table@material
scrolling to demo
tapping demo
tapping demo
< Success
> divider@material
scrolling to demo
tapping demo
tapping demo
< Success
> grid-lists@material
scrolling to demo
tapping demo
tapping demo
< Success
> lists@material
scrolling to demo
tapping demo
tapping demo
< Success
> menu@material
scrolling to demo
tapping demo
tapping demo
< Success
> nav_drawer@material
scrolling to demo
tapping demo
tapping demo
< Success
> nav_rail@material
scrolling to demo
tapping demo
tapping demo
< Success
> progress-indicator@material
scrolling to demo
tapping demo
tapping demo
< Success
> selection-controls@material
scrolling to demo
tapping demo
tapping demo
< Success
> sliders@material
scrolling to demo
tapping demo
tapping demo
< Success
> snackbars@material
scrolling to demo
tapping demo
tapping demo
< Success
> tabs@material
scrolling to demo
tapping demo
tapping demo
< Success
> text-field@material
scrolling to demo
tapping demo
tapping demo
< Success
> tooltip@material
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-activity-indicator@cupertino
scrolling to top
scrolling to cupertino category
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-buttons@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-context-menu@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-navigation-bar@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-picker@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-pull-to-refresh@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-segmented-control@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-slider@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-switch@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-tab-bar@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> cupertino-text-field@cupertino
scrolling to demo
tapping demo
tapping demo
< Success
> motion@other
scrolling to top
scrolling to other category
scrolling to demo
tapping demo
tapping demo
< Success
> typography@other
scrolling to demo
tapping demo
tapping demo
< Success
> 2d-transformations@other
scrolling to demo
tapping demo
tapping demo
< Success
scrolling to top
02:42 +3: Flutter Gallery transitions (tearDownAll)

Timeline summaries for profiled demos have been output to the build/ directory.
02:42 +3: All tests passed!

[amanv8060]

test_benchmarks migration is blocked on flutter/packages#879

[amanv8060]

@guidezpl, this can be merged?

[guidezpl]

yes!