debugAssertAllSchedulerVarsUnset function
Returns true if none of the scheduler library debug variables have been changed.
This function is used by the test framework to ensure that debug variables haven't been inadvertently changed.
See https://docs.flutter.io/flutter/scheduler/scheduler-library.html
for
a complete list.
Implementation
bool debugAssertAllSchedulerVarsUnset(String reason) {
assert(() {
if (debugPrintBeginFrameBanner ||
debugPrintEndFrameBanner) {
throw FlutterError(reason);
}
return true;
}());
return true;
}