How does google test make test sequence

By default it will test them in the order it finds them at link time, which will depend upon your tools.

You can select which tests to run, such as a subset, or a single test.

There is also an option to run them in a random order.

The advanced reference pages for googletest in the chapter Shuffling the Tests tells :

By default, Google Test uses a random seed calculated from the current time. Therefore you'll get a different order every time.

This is actually a good way of unit testing, since tests should not depend on the order of execution.

As far as I know, there are no ways of setting the order of tests execution. The only parameter you can set is the seed, used to set the same order of execution.