[tests] Preventing test from printing before Greentea __sync #3170
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Description
The
tests-mbedmicro-mbed-cpp
test was causing issues on some platforms because the serial output would get garbled and cause exceptions to occur in the testing tools when using the reporting functionality. This corrects the behavior to follow the other tests. It will now defer all printing until after the__sync
event occurs.I've also made a PR against Greentea to scrub these 'unprintable' characters from the log to prevent the traceback: ARMmbed/greentea#200
Status
READY
Migrations
If this PR changes any APIs or behaviors, give a short description of what API users should do when this PR is merged.
NO
Todos
Steps to test or reproduce
Using commit 8a9a246 of mbed-os, run the following commands: