No problem. We have updated VisualGDB to show the output messages from TinyEmbeddedTest in Test Explorer. Please try the following build: VisualGDB-126.96.36.19957.msi
Please make sure you update to the latest Profiler/Semihosting and TinyEmbeddedTest framework versions after installing the new build. Then try creating a simple TinyEmbeddedTest-based project and run its tests. The test window will show the output from test #2.
We have also added an option under VisualGDB Project Properties -> Embedded Frameworks to redirect all regular printf() output to the test output.