Command-line options for Google Test program

Google Test can be used to write unit tests for C++ programs. Some of the useful command-line options and flags available to such a program are:

• --gtest_list_tests: Lists the names of all the tests available.

• --gtest_filter=pattern: Run only the tests whose names match the regex pattern. For example: `--gtest_filter="ConvolutionLayerTest.*"

• --gtest_shuffle: Run unit tests in random order.