tests: rename test_inquiry_unmarshall to test_unmarshall_inquiry

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
tests: add unit test for readcapacity10

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
tests: fix readcapacity16 unmarshalling and add unit test

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Merge pull request #20 from sahlberg/unit-tests

Unit tests