*/
/** @file test/file_group_test.cc
- * @brief Check that FileGroup works.
+ * @brief Test FileGroup class.
+ * @ingroup selfcontained
*/
#include <stdint.h>
BOOST_CHECK_EQUAL (memcmp (data + pos, test, 128), 0);
pos += 128;
- /* Read overlapping B/C/D and over-reading */
+ /* Read overlapping B/C/D and over-reading by a lot */
BOOST_CHECK_EQUAL (fg.read (test, total_length * 3), total_length - pos);
BOOST_CHECK_EQUAL (memcmp (data + pos, test, total_length - pos), 0);
- /* Bad seek */
- BOOST_CHECK_EQUAL (fg.seek (total_length * 2, SEEK_SET), -1);
+ /* Over-read by a little */
+ BOOST_CHECK_EQUAL (fg.seek (0, SEEK_SET), 0);
+ BOOST_CHECK_EQUAL (fg.read (test, total_length), total_length);
+ BOOST_CHECK_EQUAL (fg.read (test, 1), 0);
+
+ /* Seeking off the end of the file should not give an error */
+ BOOST_CHECK_EQUAL (fg.seek (total_length * 2, SEEK_SET), total_length * 2);
+ /* and attempting to read should return nothing */
+ BOOST_CHECK_EQUAL (fg.read (test, 64), 0);
+ /* but the requested seek should be remembered, so if we now go back (relatively) */
+ BOOST_CHECK_EQUAL (fg.seek (-total_length * 2, SEEK_CUR), 0);
+ /* we should be at the start again */
+ BOOST_CHECK_EQUAL (fg.read (test, 64), 64);
+ BOOST_CHECK_EQUAL (memcmp (data, test, 64), 0);
/* SEEK_SET */
BOOST_CHECK_EQUAL (fg.seek (999, SEEK_SET), 999);