Add macros to make test description easier

[maruuusa83]

Currently we need to write some tests in same initial statement.
So, add some macros to make test description easier as shown in next:

`TEST_ARRAY(<TEST_ARRAY_NAME>);
  `TEST(<TEST_NAME>);
    <testcode>
  `ENDTEST;

  `TEST(<TEST_NAME>);
    <testcode>
  `ENDTEST;
`ENDTESTARRAY;