title: Can ctest output all log messages from the test program, e.g. boost test?
body: <p>The boost test library supports various logging options, for example: <code>--log_level=all</code> or <code>log_level=test_suite</code>.</p>
  
  <p>And the <code>ctest</code> test driver program has the option <code>--output-on-failure</code> which nicely outputs the messages from <em>boost test</em>.</p>
  
  <p>Is it possible to enable the above output for <em>passed</em> tests too?</p>