FeRD (Frank Dana) 2a90aa09a9 ReaderBase: Make DisplayInfo testable ...

- The function now takes a pointer to the output stream it will
  write to. The _default_ for that argument is a pointer to std::cout.
- Any unit tests which wish to test the functionality can capture
  the output by passing an alternate buffer:
    std::stringstream output;
    reader.DisplayInfo(&output);
    CHECK(output.str() == "Expected output");

2021-06-11 06:08:40 -04:00

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