Adds a test that verifies that the view of the local time is the same in
the Dart isolate and the process that is running the test.
Specifically, this test is useful to verify that the code paths for
timezone retrieval do not break while the underlying FIDL protocols are
being refactored.
However, since the check is generally useful, the test is written as a
general flutter test.
Running this on Fuchsia required adding `fuchsia.intl.ProfileProvider`
to the CMX file that is used for all build Fuchsia packages.
Testing is a bit involved on Fuchsia. You must build the Fuchsia
package `fluter/shell/common:shell_tests` and publish it to the dev
repository for your Fuchsia device. It seems that a way to do so is to
modify the script `flutter/tools/fuchsia/build_fuchsia_artifacts.py` and
modify its function `GetTargetsToBuild` like so:
```
def GetTargetsToBuild(product=False):
targets_to_build = [
'flutter/shell/platform/fuchsia:fuchsia',
'flutter/shell/common:shell_tests',
]
return targets_to_build
```
Next, the Fuchsia packages need to be compiled and published.
Once done, the following `fx` invocation will run the test, assuming
that you have your Fuchsia setup:
```
fx shell run \
fuchsia-pkg://fuchsia.com/shell_tests#meta/shell_tests.cmx \
-- --gtest_filter=ShellTest.LocaltimesMatch
```
* Hook up PersistentCache to ShellTestPlatformViewVulkan
* [vulkan][fuchsia] enable vulkan without swiftshader in fuchsia tests on arm64
* [vulkan][fuchsia] Disable second half of ShellTest.CacheSkSLWorks on
vulkan backend
GrContext::precompileShader() is not implemented for vulkan contexts, so
dont run the portion of this test that depends on that behavior on
Vulkan.
Co-authored-by: George Wright <gw280@google.com>
The engine was using a global to store a timestamp representing the
launch of the engine. This timestamp is initialized with a JNI call
on Android and during shell setup on other platforms. Later the
timestamp is added to a FlutterEngineMainEnter timeline event used to
measure engine startup time in benchmarks.
This PR removes the global and the JNI call and moves the timestamp
into the settings object.
This change converts it from an events that spans a time interval
to an event that occurs at an instant.
We also emit this trace event when there is no lag as opposed to
only when there was a lag to make it monotonous.
Co-authored-by: Kaushik Iska <kaushikiska@google.com>
This event goes from now -> current vsync target time
to avoid the limitations as seen in https://github.com/flutter/flutter/issues/54095#issuecomment-610636237
This event also tags additional metadata to capture
`vsync_transitions_missed` considering the refresh rate of the display.
