Create a test observer writing to the specified stream.
Declared in <ball_testobserver.h>
explicit
TestObserver(
std::ostream* stream,
bslma::Allocator* basicAllocator = 0);
Create a test observer having a unique integer identifier, whose publish method will print diagnostic information (if any) to the specified stream. Optionally specify a basicAllocator used to supply memory. If basicAllocator is 0, the currently installed default allocator is used. By default, this observer prints nothing to stream. Note that the setVerbose method can affect this default behavior.