libtracefs: Add unit tests for tracefs_cpu functions

Add unit tests to test the following functions:

  tracefs_cpu_open()
  tracefs_cpu_close()
  tracefs_cpu_read_size();
  tracefs_cpu_read()
  tracefs_cpu_write()
  tracefs_cpu_flush_write()
  tracefs_cpu_stop()

Link: https://lore.kernel.org/linux-trace-devel/20221109235214.2191393-6-rostedt@goodmis.org

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 files changed