Add tests and improve param checks

Fixed some minor `git_repository_hashfile` issues:

- Fixed incorrect doc (saying that repo could be NULL)
- Added checking of object type value to acceptable ones
- Added more tests for various parameter permutations

1 files changed, 5 insertions, 0 deletions

diff --git a/src/odb.c b/src/odb.c
index 0d3d809f7..943ffedaa 100644
--- a/src/odb.c
+++ b/src/odb.c
@@ -117,6 +117,11 @@ int git_odb__hashfd(git_oid *out, git_file fd, size_t size, git_otype type)
 	git_hash_ctx *ctx;
 	ssize_t read_len;
 
+	if (!git_object_typeisloose(type)) {
+		giterr_set(GITERR_INVALID, "Invalid object type for hash");
+		return -1;
+	}
+
 	hdr_len = format_object_header(hdr, sizeof(hdr), size, type);
 
 	ctx = git_hash_new_ctx();