# Functions
DiffErr compares 2 messages (including optional transforms) and throws a testing Fatal on diff.
FatalOnErr is a testing helper function to test and abort on an error.
FatalOnNoErr is a testing helper function to test and abort when we get no error.
ResolvePath takes a binary name and attempts to resolve it for testing or fatal out.
WantErr is a testing helper for comparing boolean expected error state.
# Structs
FakeClientStream provides a null ClientStream for testing.
FakeServerStream provides a null ServerStream for testing.