annotate accumulator.h @ 497:9d8aee621afb api-inversion

More libtests fixups.

Include audiodb_close() calls everywhere (whoops).

Add the facility to run tests under valgrind.  Unfortunately the
error-exitcode flag doesn't actually cause an error exit if the only
thing wrong is memory leaks, but it will if there are actual memory
errors, which is a start.

#ifndef ACCUMULATOR_H
#define ACCUMULATOR_H

class Accumulator {
public:
  virtual ~Accumulator() {};
  virtual void add_point(adb_result_t *r) = 0;
  virtual adb_query_results_t *get_points() = 0;
};

#endif