Each destination and the format of output to write there is specified by adding "-o filename,format" to the command-line. The special filename "-" indicates that the log output is written to the standard output stream, though standard output can be used as a destination at most once. The old-style testlib output options are still supported, but can only be used to specify one logging destination, as before. If no logging options are given on the command-line, a plain text log will go to the console, as before. To log to the console in plain text and to the file "test_output" in xunit format, one would invoke a test in the following way: tst_foo -o test_output,xunitxml -o -,txt This commit also enhances the selftests to test with multiple loggers, but negative tests (e.g. bad combinations of command-line options) are left for future task QTBUG-21567. Task-number: QTBUG-20615 Change-Id: If91e752bc7001657e15e427aba9d25ab0a29a0b0 Reviewed-on: http://codereview.qt-project.org/4125 Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com> Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>