Merge branch 'cc/test-oidmap'

Extend the test coverage a bit.

* cc/test-oidmap:
  t0016: add 'remove' subcommand test
  test-oidmap: remove 'add' subcommand
  test-hashmap: remove 'hash' command
  oidmap: use sha1hash() instead of static hash() function
  t: add t0016-oidmap.sh
  t/helper: add test-oidmap.c

diff --cc Makefile
Simple merge

diff --cc oidmap.c
index b0841a0f5870bafdcaf3482ed725e43ddaf5d461,01c206aaefe1daf29d3c8a3ac2862a93a95490af..6d6e840d037657721a5aa975e2567c8415547d93
--- 1/oidmap.c
--- 2/oidmap.c
+++ b/oidmap.c
@@@ -36,7 -29,7 +29,7 @@@ void *oidmap_get(const struct oidmap *m
        if (!map->map.cmpfn)
                return NULL;
  
-       return hashmap_get_from_hash(&map->map, hash(key), key);
 -      return hashmap_get_from_hash(&map->map, sha1hash(key->hash), key);
++      return hashmap_get_from_hash(&map->map, oidhash(key), key);
  }
  
  void *oidmap_remove(struct oidmap *map, const struct object_id *key)
@@@ -46,7 -39,7 +39,7 @@@
        if (!map->map.cmpfn)
                oidmap_init(map, 0);
  
-       hashmap_entry_init(&entry, hash(key));
 -      hashmap_entry_init(&entry, sha1hash(key->hash));
++      hashmap_entry_init(&entry, oidhash(key));
        return hashmap_remove(&map->map, &entry, key);
  }
  
@@@ -57,6 -50,6 +50,6 @@@ void *oidmap_put(struct oidmap *map, vo
        if (!map->map.cmpfn)
                oidmap_init(map, 0);
  
-       hashmap_entry_init(&to_put->internal_entry, hash(&to_put->oid));
 -      hashmap_entry_init(&to_put->internal_entry, sha1hash(to_put->oid.hash));
++      hashmap_entry_init(&to_put->internal_entry, oidhash(&to_put->oid));
        return hashmap_put(&map->map, to_put);
  }