thodg/libgit2

diff --git a/tests-clay/clay.h b/tests-clay/clay.h
index bc4267b..cbdf138 100644
--- a/tests-clay/clay.h
+++ b/tests-clay/clay.h
@@ -57,6 +57,17 @@ void cl_fixture_cleanup(const char *fixture_name);
 /**
  * Test method declarations
  */
+extern void test_status_single__hash_single_file(void);
+extern void test_status_worktree__initialize(void);
+extern void test_status_worktree__cleanup(void);
+extern void test_status_worktree__whole_repository(void);
+extern void test_status_worktree__empty_repository(void);
+extern void test_network_remotes__initialize(void);
+extern void test_network_remotes__cleanup(void);
+extern void test_network_remotes__parsing(void);
+extern void test_network_remotes__refspec_parsing(void);
+extern void test_network_remotes__fnmatch(void);
+extern void test_network_remotes__transform(void);
 extern void test_core_dirent__dont_traverse_dot(void);
 extern void test_core_dirent__traverse_subfolder(void);
 extern void test_core_dirent__traverse_slash_terminated_folder(void);
@@ -82,21 +93,40 @@ extern void test_core_strtol__int64(void);
 extern void test_core_vector__0(void);
 extern void test_core_vector__1(void);
 extern void test_core_vector__2(void);
-extern void test_network_remotes__initialize(void);
-extern void test_network_remotes__cleanup(void);
-extern void test_network_remotes__parsing(void);
-extern void test_network_remotes__refspec_parsing(void);
-extern void test_network_remotes__fnmatch(void);
-extern void test_network_remotes__transform(void);
 extern void test_object_tree_frompath__initialize(void);
 extern void test_object_tree_frompath__cleanup(void);
 extern void test_object_tree_frompath__retrieve_tree_from_path_to_treeentry(void);
 extern void test_object_tree_frompath__fail_when_processing_an_unknown_tree_segment(void);
 extern void test_object_tree_frompath__fail_when_processing_an_invalid_path(void);
-extern void test_status_single__hash_single_file(void);
-extern void test_status_worktree__initialize(void);
-extern void test_status_worktree__cleanup(void);
-extern void test_status_worktree__whole_repository(void);
-extern void test_status_worktree__empty_repository(void);
+extern void test_object_raw_chars__find_invalid_chars_in_oid(void);
+extern void test_object_raw_chars__build_valid_oid_from_raw_bytes(void);
+extern void test_object_raw_compare__succeed_on_copy_oid(void);
+extern void test_object_raw_compare__succeed_on_oid_comparison_lesser(void);
+extern void test_object_raw_compare__succeed_on_oid_comparison_equal(void);
+extern void test_object_raw_compare__succeed_on_oid_comparison_greater(void);
+extern void test_object_raw_compare__compare_fmt_oids(void);
+extern void test_object_raw_compare__compare_allocfmt_oids(void);
+extern void test_object_raw_compare__compare_pathfmt_oids(void);
+extern void test_object_raw_convert__succeed_on_oid_to_string_conversion(void);
+extern void test_object_raw_convert__succeed_on_oid_to_string_conversion_big(void);
+extern void test_object_raw_fromstr__fail_on_invalid_oid_string(void);
+extern void test_object_raw_fromstr__succeed_on_valid_oid_string(void);
+extern void test_object_raw_hash__hash_by_blocks(void);
+extern void test_object_raw_hash__hash_buffer_in_single_call(void);
+extern void test_object_raw_hash__hash_vector(void);
+extern void test_object_raw_hash__hash_junk_data(void);
+extern void test_object_raw_hash__hash_commit_object(void);
+extern void test_object_raw_hash__hash_tree_object(void);
+extern void test_object_raw_hash__hash_tag_object(void);
+extern void test_object_raw_hash__hash_zero_length_object(void);
+extern void test_object_raw_hash__hash_one_byte_object(void);
+extern void test_object_raw_hash__hash_two_byte_object(void);
+extern void test_object_raw_hash__hash_multi_byte_object(void);
+extern void test_object_raw_short__oid_shortener_no_duplicates(void);
+extern void test_object_raw_short__oid_shortener_stresstest_git_oid_shorten(void);
+extern void test_object_raw_size__validate_oid_size(void);
+extern void test_object_raw_type2string__convert_type_to_string(void);
+extern void test_object_raw_type2string__convert_string_to_type(void);
+extern void test_object_raw_type2string__check_type_is_loose(void);
 
 #endif
diff --git a/tests-clay/clay_main.c b/tests-clay/clay_main.c
index da90872..2f3cee3 100644
--- a/tests-clay/clay_main.c
+++ b/tests-clay/clay_main.c
@@ -660,123 +660,201 @@ cl_fs_cleanup(void)
 
 
 static const struct clay_func _all_callbacks[] = {
-    {"dont_traverse_dot", &test_core_dirent__dont_traverse_dot, 0},
-	{"traverse_subfolder", &test_core_dirent__traverse_subfolder, 0},
-	{"traverse_slash_terminated_folder", &test_core_dirent__traverse_slash_terminated_folder, 0},
-	{"dont_traverse_empty_folders", &test_core_dirent__dont_traverse_empty_folders, 0},
-	{"traverse_weird_filenames", &test_core_dirent__traverse_weird_filenames, 0},
-	{"0", &test_core_filebuf__0, 1},
-	{"1", &test_core_filebuf__1, 1},
-	{"2", &test_core_filebuf__2, 1},
-	{"streq", &test_core_oid__streq, 2},
-	{"0", &test_core_path__0, 3},
-	{"1", &test_core_path__1, 3},
-	{"2", &test_core_path__2, 3},
-	{"5", &test_core_path__5, 3},
-	{"6", &test_core_path__6, 3},
-	{"delete_recursive", &test_core_rmdir__delete_recursive, 4},
-	{"fail_to_delete_non_empty_dir", &test_core_rmdir__fail_to_delete_non_empty_dir, 4},
-	{"0", &test_core_string__0, 5},
-	{"1", &test_core_string__1, 5},
-	{"int32", &test_core_strtol__int32, 6},
-	{"int64", &test_core_strtol__int64, 6},
-	{"0", &test_core_vector__0, 7},
-	{"1", &test_core_vector__1, 7},
-	{"2", &test_core_vector__2, 7},
-	{"parsing", &test_network_remotes__parsing, 8},
-	{"refspec_parsing", &test_network_remotes__refspec_parsing, 8},
-	{"fnmatch", &test_network_remotes__fnmatch, 8},
-	{"transform", &test_network_remotes__transform, 8},
-	{"retrieve_tree_from_path_to_treeentry", &test_object_tree_frompath__retrieve_tree_from_path_to_treeentry, 9},
-	{"fail_when_processing_an_unknown_tree_segment", &test_object_tree_frompath__fail_when_processing_an_unknown_tree_segment, 9},
-	{"fail_when_processing_an_invalid_path", &test_object_tree_frompath__fail_when_processing_an_invalid_path, 9},
-	{"hash_single_file", &test_status_single__hash_single_file, 10},
-	{"whole_repository", &test_status_worktree__whole_repository, 11},
-	{"empty_repository", &test_status_worktree__empty_repository, 11}
+    {"hash_single_file", &test_status_single__hash_single_file, 0},
+	{"whole_repository", &test_status_worktree__whole_repository, 1},
+	{"empty_repository", &test_status_worktree__empty_repository, 1},
+	{"parsing", &test_network_remotes__parsing, 2},
+	{"refspec_parsing", &test_network_remotes__refspec_parsing, 2},
+	{"fnmatch", &test_network_remotes__fnmatch, 2},
+	{"transform", &test_network_remotes__transform, 2},
+	{"dont_traverse_dot", &test_core_dirent__dont_traverse_dot, 3},
+	{"traverse_subfolder", &test_core_dirent__traverse_subfolder, 3},
+	{"traverse_slash_terminated_folder", &test_core_dirent__traverse_slash_terminated_folder, 3},
+	{"dont_traverse_empty_folders", &test_core_dirent__dont_traverse_empty_folders, 3},
+	{"traverse_weird_filenames", &test_core_dirent__traverse_weird_filenames, 3},
+	{"0", &test_core_filebuf__0, 4},
+	{"1", &test_core_filebuf__1, 4},
+	{"2", &test_core_filebuf__2, 4},
+	{"streq", &test_core_oid__streq, 5},
+	{"0", &test_core_path__0, 6},
+	{"1", &test_core_path__1, 6},
+	{"2", &test_core_path__2, 6},
+	{"5", &test_core_path__5, 6},
+	{"6", &test_core_path__6, 6},
+	{"delete_recursive", &test_core_rmdir__delete_recursive, 7},
+	{"fail_to_delete_non_empty_dir", &test_core_rmdir__fail_to_delete_non_empty_dir, 7},
+	{"0", &test_core_string__0, 8},
+	{"1", &test_core_string__1, 8},
+	{"int32", &test_core_strtol__int32, 9},
+	{"int64", &test_core_strtol__int64, 9},
+	{"0", &test_core_vector__0, 10},
+	{"1", &test_core_vector__1, 10},
+	{"2", &test_core_vector__2, 10},
+	{"retrieve_tree_from_path_to_treeentry", &test_object_tree_frompath__retrieve_tree_from_path_to_treeentry, 11},
+	{"fail_when_processing_an_unknown_tree_segment", &test_object_tree_frompath__fail_when_processing_an_unknown_tree_segment, 11},
+	{"fail_when_processing_an_invalid_path", &test_object_tree_frompath__fail_when_processing_an_invalid_path, 11},
+	{"find_invalid_chars_in_oid", &test_object_raw_chars__find_invalid_chars_in_oid, 12},
+	{"build_valid_oid_from_raw_bytes", &test_object_raw_chars__build_valid_oid_from_raw_bytes, 12},
+	{"succeed_on_copy_oid", &test_object_raw_compare__succeed_on_copy_oid, 13},
+	{"succeed_on_oid_comparison_lesser", &test_object_raw_compare__succeed_on_oid_comparison_lesser, 13},
+	{"succeed_on_oid_comparison_equal", &test_object_raw_compare__succeed_on_oid_comparison_equal, 13},
+	{"succeed_on_oid_comparison_greater", &test_object_raw_compare__succeed_on_oid_comparison_greater, 13},
+	{"compare_fmt_oids", &test_object_raw_compare__compare_fmt_oids, 13},
+	{"compare_allocfmt_oids", &test_object_raw_compare__compare_allocfmt_oids, 13},
+	{"compare_pathfmt_oids", &test_object_raw_compare__compare_pathfmt_oids, 13},
+	{"succeed_on_oid_to_string_conversion", &test_object_raw_convert__succeed_on_oid_to_string_conversion, 14},
+	{"succeed_on_oid_to_string_conversion_big", &test_object_raw_convert__succeed_on_oid_to_string_conversion_big, 14},
+	{"fail_on_invalid_oid_string", &test_object_raw_fromstr__fail_on_invalid_oid_string, 15},
+	{"succeed_on_valid_oid_string", &test_object_raw_fromstr__succeed_on_valid_oid_string, 15},
+	{"hash_by_blocks", &test_object_raw_hash__hash_by_blocks, 16},
+	{"hash_buffer_in_single_call", &test_object_raw_hash__hash_buffer_in_single_call, 16},
+	{"hash_vector", &test_object_raw_hash__hash_vector, 16},
+	{"hash_junk_data", &test_object_raw_hash__hash_junk_data, 16},
+	{"hash_commit_object", &test_object_raw_hash__hash_commit_object, 16},
+	{"hash_tree_object", &test_object_raw_hash__hash_tree_object, 16},
+	{"hash_tag_object", &test_object_raw_hash__hash_tag_object, 16},
+	{"hash_zero_length_object", &test_object_raw_hash__hash_zero_length_object, 16},
+	{"hash_one_byte_object", &test_object_raw_hash__hash_one_byte_object, 16},
+	{"hash_two_byte_object", &test_object_raw_hash__hash_two_byte_object, 16},
+	{"hash_multi_byte_object", &test_object_raw_hash__hash_multi_byte_object, 16},
+	{"oid_shortener_no_duplicates", &test_object_raw_short__oid_shortener_no_duplicates, 17},
+	{"oid_shortener_stresstest_git_oid_shorten", &test_object_raw_short__oid_shortener_stresstest_git_oid_shorten, 17},
+	{"validate_oid_size", &test_object_raw_size__validate_oid_size, 18},
+	{"convert_type_to_string", &test_object_raw_type2string__convert_type_to_string, 19},
+	{"convert_string_to_type", &test_object_raw_type2string__convert_string_to_type, 19},
+	{"check_type_is_loose", &test_object_raw_type2string__check_type_is_loose, 19}
 };
 
 static const struct clay_suite _all_suites[] = {
     {
+        "status::single",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[0], 1
+    },
+	{
+        "status::worktree",
+        {"initialize", &test_status_worktree__initialize, 1},
+        {"cleanup", &test_status_worktree__cleanup, 1},
+        &_all_callbacks[1], 2
+    },
+	{
+        "network::remotes",
+        {"initialize", &test_network_remotes__initialize, 2},
+        {"cleanup", &test_network_remotes__cleanup, 2},
+        &_all_callbacks[3], 4
+    },
+	{
         "core::dirent",
         {NULL, NULL, 0},
         {NULL, NULL, 0},
-        &_all_callbacks[0], 5
+        &_all_callbacks[7], 5
     },
 	{
         "core::filebuf",
         {NULL, NULL, 0},
         {NULL, NULL, 0},
-        &_all_callbacks[5], 3
+        &_all_callbacks[12], 3
     },
 	{
         "core::oid",
-        {"initialize", &test_core_oid__initialize, 2},
+        {"initialize", &test_core_oid__initialize, 5},
         {NULL, NULL, 0},
-        &_all_callbacks[8], 1
+        &_all_callbacks[15], 1
     },
 	{
         "core::path",
         {NULL, NULL, 0},
         {NULL, NULL, 0},
-        &_all_callbacks[9], 5
+        &_all_callbacks[16], 5
     },
 	{
         "core::rmdir",
-        {"initialize", &test_core_rmdir__initialize, 4},
+        {"initialize", &test_core_rmdir__initialize, 7},
         {NULL, NULL, 0},
-        &_all_callbacks[14], 2
+        &_all_callbacks[21], 2
     },
 	{
         "core::string",
         {NULL, NULL, 0},
         {NULL, NULL, 0},
-        &_all_callbacks[16], 2
+        &_all_callbacks[23], 2
     },
 	{
         "core::strtol",
         {NULL, NULL, 0},
         {NULL, NULL, 0},
-        &_all_callbacks[18], 2
+        &_all_callbacks[25], 2
     },
 	{
         "core::vector",
         {NULL, NULL, 0},
         {NULL, NULL, 0},
-        &_all_callbacks[20], 3
+        &_all_callbacks[27], 3
     },
 	{
-        "network::remotes",
-        {"initialize", &test_network_remotes__initialize, 8},
-        {"cleanup", &test_network_remotes__cleanup, 8},
-        &_all_callbacks[23], 4
+        "object::tree::frompath",
+        {"initialize", &test_object_tree_frompath__initialize, 11},
+        {"cleanup", &test_object_tree_frompath__cleanup, 11},
+        &_all_callbacks[30], 3
     },
 	{
-        "object::tree::frompath",
-        {"initialize", &test_object_tree_frompath__initialize, 9},
-        {"cleanup", &test_object_tree_frompath__cleanup, 9},
-        &_all_callbacks[27], 3
+        "object::raw::chars",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[33], 2
     },
 	{
-        "status::single",
+        "object::raw::compare",
         {NULL, NULL, 0},
         {NULL, NULL, 0},
-        &_all_callbacks[30], 1
+        &_all_callbacks[35], 7
     },
 	{
-        "status::worktree",
-        {"initialize", &test_status_worktree__initialize, 11},
-        {"cleanup", &test_status_worktree__cleanup, 11},
-        &_all_callbacks[31], 2
+        "object::raw::convert",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[42], 2
+    },
+	{
+        "object::raw::fromstr",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[44], 2
+    },
+	{
+        "object::raw::hash",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[46], 11
+    },
+	{
+        "object::raw::short",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[57], 2
+    },
+	{
+        "object::raw::size",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[59], 1
+    },
+	{
+        "object::raw::type2string",
+        {NULL, NULL, 0},
+        {NULL, NULL, 0},
+        &_all_callbacks[60], 3
     }
 };
 
-static const char _suites_str[] = "core::dirent, core::filebuf, core::oid, core::path, core::rmdir, core::string, core::strtol, core::vector, network::remotes, object::tree::frompath, status::single, status::worktree";
+static const char _suites_str[] = "status::single, status::worktree, network::remotes, core::dirent, core::filebuf, core::oid, core::path, core::rmdir, core::string, core::strtol, core::vector, object::tree::frompath, object::raw::chars, object::raw::compare, object::raw::convert, object::raw::fromstr, object::raw::hash, object::raw::short, object::raw::size, object::raw::type2string";
 
 int _MAIN_CC main(int argc, char *argv[])
 {
     return clay_test(
         argc, argv, _suites_str,
-        _all_callbacks, 33,
-        _all_suites, 12
+        _all_callbacks, 63,
+        _all_suites, 20
     );
 }
diff --git a/tests-clay/object/raw/chars.c b/tests-clay/object/raw/chars.c
new file mode 100644
index 0000000..eba352b
--- /dev/null
+++ b/tests-clay/object/raw/chars.c
@@ -0,0 +1,52 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+
+static int from_hex(unsigned int i)
+{
+	if (i >= '0' && i <= '9')
+		return i - '0';
+	if (i >= 'a' && i <= 'f')
+		return 10 + (i - 'a');
+	if (i >= 'A' && i <= 'F')
+		return 10 + (i - 'A');
+	return -1;
+}
+
+void test_object_raw_chars__find_invalid_chars_in_oid(void)
+{
+	git_oid out;
+	unsigned char exp[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xe0,
+	};
+	char in[41] = "16a67770b7d8d72317c4b775213c23a8bd74f5e0";
+	unsigned int i;
+
+	for (i = 0; i < 256; i++) {
+		in[38] = (char)i;
+		if (from_hex(i) >= 0) {
+			exp[19] = (unsigned char)(from_hex(i) << 4);
+			cl_git_pass(git_oid_fromstr(&out, in));
+			cl_assert(memcmp(out.id, exp, sizeof(out.id)) == 0);
+		} else {
+			cl_git_fail(git_oid_fromstr(&out, in));
+		}
+	}
+}
+
+void test_object_raw_chars__build_valid_oid_from_raw_bytes(void)
+{
+	git_oid out;
+	unsigned char exp[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xe0,
+	};
+	git_oid_fromraw(&out, exp);
+	cl_git_pass(memcmp(out.id, exp, sizeof(out.id)));
+}
diff --git a/tests-clay/object/raw/compare.c b/tests-clay/object/raw/compare.c
new file mode 100644
index 0000000..45e5331
--- /dev/null
+++ b/tests-clay/object/raw/compare.c
@@ -0,0 +1,124 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+
+void test_object_raw_compare__succeed_on_copy_oid(void)
+{
+	git_oid a, b;
+	unsigned char exp[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xe0,
+	};
+	memset(&b, 0, sizeof(b));
+	git_oid_fromraw(&a, exp);
+	git_oid_cpy(&b, &a);
+	cl_git_pass(memcmp(a.id, exp, sizeof(a.id)));
+}
+
+void test_object_raw_compare__succeed_on_oid_comparison_lesser(void)
+{
+	git_oid a, b;
+	unsigned char a_in[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xe0,
+	};
+	unsigned char b_in[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xf0,
+	};
+	git_oid_fromraw(&a, a_in);
+	git_oid_fromraw(&b, b_in);
+	cl_assert(git_oid_cmp(&a, &b) < 0);
+}
+
+void test_object_raw_compare__succeed_on_oid_comparison_equal(void)
+{
+	git_oid a, b;
+	unsigned char a_in[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xe0,
+	};
+	git_oid_fromraw(&a, a_in);
+	git_oid_fromraw(&b, a_in);
+	cl_assert(git_oid_cmp(&a, &b) == 0);
+}
+
+void test_object_raw_compare__succeed_on_oid_comparison_greater(void)
+{
+	git_oid a, b;
+	unsigned char a_in[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xe0,
+	};
+	unsigned char b_in[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xd0,
+	};
+	git_oid_fromraw(&a, a_in);
+	git_oid_fromraw(&b, b_in);
+	cl_assert(git_oid_cmp(&a, &b) > 0);
+}
+
+void test_object_raw_compare__compare_fmt_oids(void)
+{
+	const char *exp = "16a0123456789abcdef4b775213c23a8bd74f5e0";
+	git_oid in;
+	char out[GIT_OID_HEXSZ + 1];
+
+	cl_git_pass(git_oid_fromstr(&in, exp));
+
+	/* Format doesn't touch the last byte */
+	out[GIT_OID_HEXSZ] = 'Z';
+	git_oid_fmt(out, &in);
+	cl_assert(out[GIT_OID_HEXSZ] == 'Z');
+
+	/* Format produced the right result */
+	out[GIT_OID_HEXSZ] = '\0';
+	cl_assert(strcmp(exp, out) == 0);
+}
+
+void test_object_raw_compare__compare_allocfmt_oids(void)
+{
+	const char *exp = "16a0123456789abcdef4b775213c23a8bd74f5e0";
+	git_oid in;
+	char *out;
+
+	cl_git_pass(git_oid_fromstr(&in, exp));
+
+	out = git_oid_allocfmt(&in);
+	cl_assert(out);
+	cl_assert(strcmp(exp, out) == 0);
+	free(out);
+}
+
+void test_object_raw_compare__compare_pathfmt_oids(void)
+{
+	const char *exp1 = "16a0123456789abcdef4b775213c23a8bd74f5e0";
+	const char *exp2 = "16/a0123456789abcdef4b775213c23a8bd74f5e0";
+	git_oid in;
+	char out[GIT_OID_HEXSZ + 2];
+
+	cl_git_pass(git_oid_fromstr(&in, exp1));
+
+	/* Format doesn't touch the last byte */
+	out[GIT_OID_HEXSZ + 1] = 'Z';
+	git_oid_pathfmt(out, &in);
+	cl_assert(out[GIT_OID_HEXSZ + 1] == 'Z');
+
+	/* Format produced the right result */
+	out[GIT_OID_HEXSZ + 1] = '\0';
+	cl_assert(strcmp(exp2, out) == 0);
+}
diff --git a/tests-clay/object/raw/convert.c b/tests-clay/object/raw/convert.c
new file mode 100644
index 0000000..f69f5f9
--- /dev/null
+++ b/tests-clay/object/raw/convert.c
@@ -0,0 +1,75 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+
+void test_object_raw_convert__succeed_on_oid_to_string_conversion(void)
+{
+	const char *exp = "16a0123456789abcdef4b775213c23a8bd74f5e0";
+	git_oid in;
+	char out[GIT_OID_HEXSZ + 1];
+	char *str;
+	int i;
+
+	cl_git_pass(git_oid_fromstr(&in, exp));
+
+	/* NULL buffer pointer, returns static empty string */
+	str = git_oid_to_string(NULL, sizeof(out), &in);
+	cl_assert(str && *str == '\0' && str != out);
+
+	/* zero buffer size, returns static empty string */
+	str = git_oid_to_string(out, 0, &in);
+	cl_assert(str && *str == '\0' && str != out);
+
+	/* NULL oid pointer, returns static empty string */
+	str = git_oid_to_string(out, sizeof(out), NULL);
+	cl_assert(str && *str == '\0' && str != out);
+
+	/* n == 1, returns out as an empty string */
+	str = git_oid_to_string(out, 1, &in);
+	cl_assert(str && *str == '\0' && str == out);
+
+	for (i = 1; i < GIT_OID_HEXSZ; i++) {
+		out[i+1] = 'Z';
+		str = git_oid_to_string(out, i+1, &in);
+		/* returns out containing c-string */
+		cl_assert(str && str == out);
+		/* must be '\0' terminated */
+		cl_assert(*(str+i) == '\0');
+		/* must not touch bytes past end of string */
+		cl_assert(*(str+(i+1)) == 'Z');
+		/* i == n-1 charaters of string */
+		cl_git_pass(strncmp(exp, out, i));
+	}
+
+	/* returns out as hex formatted c-string */
+	str = git_oid_to_string(out, sizeof(out), &in);
+	cl_assert(str && str == out && *(str+GIT_OID_HEXSZ) == '\0');
+	cl_assert(strcmp(exp, out) == 0);
+}
+
+void test_object_raw_convert__succeed_on_oid_to_string_conversion_big(void)
+{
+	const char *exp = "16a0123456789abcdef4b775213c23a8bd74f5e0";
+	git_oid in;
+	char big[GIT_OID_HEXSZ + 1 + 3]; /* note + 4 => big buffer */
+	char *str;
+
+	cl_git_pass(git_oid_fromstr(&in, exp));
+
+	/* place some tail material */
+	big[GIT_OID_HEXSZ+0] = 'W'; /* should be '\0' afterwards */
+	big[GIT_OID_HEXSZ+1] = 'X'; /* should remain untouched   */
+	big[GIT_OID_HEXSZ+2] = 'Y'; /* ditto */
+	big[GIT_OID_HEXSZ+3] = 'Z'; /* ditto */
+
+	/* returns big as hex formatted c-string */
+	str = git_oid_to_string(big, sizeof(big), &in);
+	cl_assert(str && str == big && *(str+GIT_OID_HEXSZ) == '\0');
+	cl_assert(strcmp(exp, big) == 0);
+
+	/* check tail material is untouched */
+	cl_assert(str && str == big && *(str+GIT_OID_HEXSZ+1) == 'X');
+	cl_assert(str && str == big && *(str+GIT_OID_HEXSZ+2) == 'Y');
+	cl_assert(str && str == big && *(str+GIT_OID_HEXSZ+3) == 'Z');
+}
diff --git a/tests-clay/object/raw/data.h b/tests-clay/object/raw/data.h
new file mode 100644
index 0000000..cf23819
--- /dev/null
+++ b/tests-clay/object/raw/data.h
@@ -0,0 +1,323 @@
+
+/*
+ * Raw data
+ */
+static unsigned char commit_data[] = {
+    0x74, 0x72, 0x65, 0x65, 0x20, 0x64, 0x66, 0x66,
+    0x32, 0x64, 0x61, 0x39, 0x30, 0x62, 0x32, 0x35,
+    0x34, 0x65, 0x31, 0x62, 0x65, 0x62, 0x38, 0x38,
+    0x39, 0x64, 0x31, 0x66, 0x31, 0x66, 0x31, 0x32,
+    0x38, 0x38, 0x62, 0x65, 0x31, 0x38, 0x30, 0x33,
+    0x37, 0x38, 0x32, 0x64, 0x66, 0x0a, 0x61, 0x75,
+    0x74, 0x68, 0x6f, 0x72, 0x20, 0x41, 0x20, 0x55,
+    0x20, 0x54, 0x68, 0x6f, 0x72, 0x20, 0x3c, 0x61,
+    0x75, 0x74, 0x68, 0x6f, 0x72, 0x40, 0x65, 0x78,
+    0x61, 0x6d, 0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f,
+    0x6d, 0x3e, 0x20, 0x31, 0x32, 0x32, 0x37, 0x38,
+    0x31, 0x34, 0x32, 0x39, 0x37, 0x20, 0x2b, 0x30,
+    0x30, 0x30, 0x30, 0x0a, 0x63, 0x6f, 0x6d, 0x6d,
+    0x69, 0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x20,
+    0x4f, 0x20, 0x4d, 0x69, 0x74, 0x74, 0x65, 0x72,
+    0x20, 0x3c, 0x63, 0x6f, 0x6d, 0x6d, 0x69, 0x74,
+    0x74, 0x65, 0x72, 0x40, 0x65, 0x78, 0x61, 0x6d,
+    0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x3e,
+    0x20, 0x31, 0x32, 0x32, 0x37, 0x38, 0x31, 0x34,
+    0x32, 0x39, 0x37, 0x20, 0x2b, 0x30, 0x30, 0x30,
+    0x30, 0x0a, 0x0a, 0x41, 0x20, 0x6f, 0x6e, 0x65,
+    0x2d, 0x6c, 0x69, 0x6e, 0x65, 0x20, 0x63, 0x6f,
+    0x6d, 0x6d, 0x69, 0x74, 0x20, 0x73, 0x75, 0x6d,
+    0x6d, 0x61, 0x72, 0x79, 0x0a, 0x0a, 0x54, 0x68,
+    0x65, 0x20, 0x62, 0x6f, 0x64, 0x79, 0x20, 0x6f,
+    0x66, 0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6f,
+    0x6d, 0x6d, 0x69, 0x74, 0x20, 0x6d, 0x65, 0x73,
+    0x73, 0x61, 0x67, 0x65, 0x2c, 0x20, 0x63, 0x6f,
+    0x6e, 0x74, 0x61, 0x69, 0x6e, 0x69, 0x6e, 0x67,
+    0x20, 0x66, 0x75, 0x72, 0x74, 0x68, 0x65, 0x72,
+    0x20, 0x65, 0x78, 0x70, 0x6c, 0x61, 0x6e, 0x61,
+    0x74, 0x69, 0x6f, 0x6e, 0x0a, 0x6f, 0x66, 0x20,
+    0x74, 0x68, 0x65, 0x20, 0x70, 0x75, 0x72, 0x70,
+    0x6f, 0x73, 0x65, 0x20, 0x6f, 0x66, 0x20, 0x74,
+    0x68, 0x65, 0x20, 0x63, 0x68, 0x61, 0x6e, 0x67,
+    0x65, 0x73, 0x20, 0x69, 0x6e, 0x74, 0x72, 0x6f,
+    0x64, 0x75, 0x63, 0x65, 0x64, 0x20, 0x62, 0x79,
+    0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6f, 0x6d,
+    0x6d, 0x69, 0x74, 0x2e, 0x0a, 0x0a, 0x53, 0x69,
+    0x67, 0x6e, 0x65, 0x64, 0x2d, 0x6f, 0x66, 0x2d,
+    0x62, 0x79, 0x3a, 0x20, 0x41, 0x20, 0x55, 0x20,
+    0x54, 0x68, 0x6f, 0x72, 0x20, 0x3c, 0x61, 0x75,
+    0x74, 0x68, 0x6f, 0x72, 0x40, 0x65, 0x78, 0x61,
+    0x6d, 0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d,
+    0x3e, 0x0a,
+};
+
+
+static unsigned char tree_data[] = {
+    0x31, 0x30, 0x30, 0x36, 0x34, 0x34, 0x20, 0x6f,
+    0x6e, 0x65, 0x00, 0x8b, 0x13, 0x78, 0x91, 0x79,
+    0x1f, 0xe9, 0x69, 0x27, 0xad, 0x78, 0xe6, 0x4b,
+    0x0a, 0xad, 0x7b, 0xde, 0xd0, 0x8b, 0xdc, 0x31,
+    0x30, 0x30, 0x36, 0x34, 0x34, 0x20, 0x73, 0x6f,
+    0x6d, 0x65, 0x00, 0xfd, 0x84, 0x30, 0xbc, 0x86,
+    0x4c, 0xfc, 0xd5, 0xf1, 0x0e, 0x55, 0x90, 0xf8,
+    0xa4, 0x47, 0xe0, 0x1b, 0x94, 0x2b, 0xfe, 0x31,
+    0x30, 0x30, 0x36, 0x34, 0x34, 0x20, 0x74, 0x77,
+    0x6f, 0x00, 0x78, 0x98, 0x19, 0x22, 0x61, 0x3b,
+    0x2a, 0xfb, 0x60, 0x25, 0x04, 0x2f, 0xf6, 0xbd,
+    0x87, 0x8a, 0xc1, 0x99, 0x4e, 0x85, 0x31, 0x30,
+    0x30, 0x36, 0x34, 0x34, 0x20, 0x7a, 0x65, 0x72,
+    0x6f, 0x00, 0xe6, 0x9d, 0xe2, 0x9b, 0xb2, 0xd1,
+    0xd6, 0x43, 0x4b, 0x8b, 0x29, 0xae, 0x77, 0x5a,
+    0xd8, 0xc2, 0xe4, 0x8c, 0x53, 0x91,
+};
+
+static unsigned char tag_data[] = {
+    0x6f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x20, 0x33,
+    0x64, 0x37, 0x66, 0x38, 0x61, 0x36, 0x61, 0x66,
+    0x30, 0x37, 0x36, 0x63, 0x38, 0x63, 0x33, 0x66,
+    0x32, 0x30, 0x30, 0x37, 0x31, 0x61, 0x38, 0x39,
+    0x33, 0x35, 0x63, 0x64, 0x62, 0x65, 0x38, 0x32,
+    0x32, 0x38, 0x35, 0x39, 0x34, 0x64, 0x31, 0x0a,
+    0x74, 0x79, 0x70, 0x65, 0x20, 0x63, 0x6f, 0x6d,
+    0x6d, 0x69, 0x74, 0x0a, 0x74, 0x61, 0x67, 0x20,
+    0x76, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x0a, 0x74,
+    0x61, 0x67, 0x67, 0x65, 0x72, 0x20, 0x43, 0x20,
+    0x4f, 0x20, 0x4d, 0x69, 0x74, 0x74, 0x65, 0x72,
+    0x20, 0x3c, 0x63, 0x6f, 0x6d, 0x6d, 0x69, 0x74,
+    0x74, 0x65, 0x72, 0x40, 0x65, 0x78, 0x61, 0x6d,
+    0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x3e,
+    0x20, 0x31, 0x32, 0x32, 0x37, 0x38, 0x31, 0x34,
+    0x32, 0x39, 0x37, 0x20, 0x2b, 0x30, 0x30, 0x30,
+    0x30, 0x0a, 0x0a, 0x54, 0x68, 0x69, 0x73, 0x20,
+    0x69, 0x73, 0x20, 0x74, 0x68, 0x65, 0x20, 0x74,
+    0x61, 0x67, 0x20, 0x6f, 0x62, 0x6a, 0x65, 0x63,
+    0x74, 0x20, 0x66, 0x6f, 0x72, 0x20, 0x72, 0x65,
+    0x6c, 0x65, 0x61, 0x73, 0x65, 0x20, 0x76, 0x30,
+    0x2e, 0x30, 0x2e, 0x31, 0x0a,
+};
+
+/*
+ * Dummy data
+ */
+static unsigned char zero_data[] = {
+    0x00,
+};
+
+static unsigned char one_data[] = {
+    0x0a,
+};
+
+static unsigned char two_data[] = {
+    0x61, 0x0a,
+};
+
+static unsigned char some_data[] = {
+    0x2f, 0x2a, 0x0a, 0x20, 0x2a, 0x20, 0x54, 0x68,
+    0x69, 0x73, 0x20, 0x66, 0x69, 0x6c, 0x65, 0x20,
+    0x69, 0x73, 0x20, 0x66, 0x72, 0x65, 0x65, 0x20,
+    0x73, 0x6f, 0x66, 0x74, 0x77, 0x61, 0x72, 0x65,
+    0x3b, 0x20, 0x79, 0x6f, 0x75, 0x20, 0x63, 0x61,
+    0x6e, 0x20, 0x72, 0x65, 0x64, 0x69, 0x73, 0x74,
+    0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x20, 0x69,
+    0x74, 0x20, 0x61, 0x6e, 0x64, 0x2f, 0x6f, 0x72,
+    0x20, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x79, 0x0a,
+    0x20, 0x2a, 0x20, 0x69, 0x74, 0x20, 0x75, 0x6e,
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+    0x20, 0x74, 0x68, 0x65, 0x20, 0x47, 0x4e, 0x55,
+    0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
+    0x20, 0x50, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x20,
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+    0x20, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e,
+    0x20, 0x32, 0x2c, 0x0a, 0x20, 0x2a, 0x20, 0x61,
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+    0x20, 0x2a, 0x20, 0x49, 0x6e, 0x20, 0x61, 0x64,
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+    0x73, 0x20, 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65,
+    0x20, 0x47, 0x4e, 0x55, 0x20, 0x47, 0x65, 0x6e,
+    0x65, 0x72, 0x61, 0x6c, 0x20, 0x50, 0x75, 0x62,
+    0x6c, 0x69, 0x63, 0x20, 0x4c, 0x69, 0x63, 0x65,
+    0x6e, 0x73, 0x65, 0x2c, 0x0a, 0x20, 0x2a, 0x20,
+    0x74, 0x68, 0x65, 0x20, 0x61, 0x75, 0x74, 0x68,
+    0x6f, 0x72, 0x73, 0x20, 0x67, 0x69, 0x76, 0x65,
+    0x20, 0x79, 0x6f, 0x75, 0x20, 0x75, 0x6e, 0x6c,
+    0x69, 0x6d, 0x69, 0x74, 0x65, 0x64, 0x20, 0x70,
+    0x65, 0x72, 0x6d, 0x69, 0x73, 0x73, 0x69, 0x6f,
+    0x6e, 0x20, 0x74, 0x6f, 0x20, 0x6c, 0x69, 0x6e,
+    0x6b, 0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6f,
+    0x6d, 0x70, 0x69, 0x6c, 0x65, 0x64, 0x0a, 0x20,
+    0x2a, 0x20, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f,
+    0x6e, 0x20, 0x6f, 0x66, 0x20, 0x74, 0x68, 0x69,
+    0x73, 0x20, 0x66, 0x69, 0x6c, 0x65, 0x20, 0x69,
+    0x6e, 0x74, 0x6f, 0x20, 0x63, 0x6f, 0x6d, 0x62,
+    0x69, 0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73,
+    0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x6f, 0x74,
+    0x68, 0x65, 0x72, 0x20, 0x70, 0x72, 0x6f, 0x67,
+    0x72, 0x61, 0x6d, 0x73, 0x2c, 0x0a, 0x20, 0x2a,
+    0x20, 0x61, 0x6e, 0x64, 0x20, 0x74, 0x6f, 0x20,
+    0x64, 0x69, 0x73, 0x74, 0x72, 0x69, 0x62, 0x75,
+    0x74, 0x65, 0x20, 0x74, 0x68, 0x6f, 0x73, 0x65,
+    0x20, 0x63, 0x6f, 0x6d, 0x62, 0x69, 0x6e, 0x61,
+    0x74, 0x69, 0x6f, 0x6e, 0x73, 0x20, 0x77, 0x69,
+    0x74, 0x68, 0x6f, 0x75, 0x74, 0x20, 0x61, 0x6e,
+    0x79, 0x20, 0x72, 0x65, 0x73, 0x74, 0x72, 0x69,
+    0x63, 0x74, 0x69, 0x6f, 0x6e, 0x0a, 0x20, 0x2a,
+    0x20, 0x63, 0x6f, 0x6d, 0x69, 0x6e, 0x67, 0x20,
+    0x66, 0x72, 0x6f, 0x6d, 0x20, 0x74, 0x68, 0x65,
+    0x20, 0x75, 0x73, 0x65, 0x20, 0x6f, 0x66, 0x20,
+    0x74, 0x68, 0x69, 0x73, 0x20, 0x66, 0x69, 0x6c,
+    0x65, 0x2e, 0x20, 0x20, 0x28, 0x54, 0x68, 0x65,
+    0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
+    0x20, 0x50, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x20,
+    0x4c, 0x69, 0x63, 0x65, 0x6e, 0x73, 0x65, 0x0a,
+    0x20, 0x2a, 0x20, 0x72, 0x65, 0x73, 0x74, 0x72,
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+    0x20, 0x69, 0x6e, 0x20, 0x6f, 0x74, 0x68, 0x65,
+    0x72, 0x20, 0x72, 0x65, 0x73, 0x70, 0x65, 0x63,
+    0x74, 0x73, 0x3b, 0x20, 0x66, 0x6f, 0x72, 0x20,
+    0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x2c,
+    0x20, 0x74, 0x68, 0x65, 0x79, 0x20, 0x63, 0x6f,
+    0x76, 0x65, 0x72, 0x0a, 0x20, 0x2a, 0x20, 0x6d,
+    0x6f, 0x64, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74,
+    0x69, 0x6f, 0x6e, 0x20, 0x6f, 0x66, 0x20, 0x74,
+    0x68, 0x65, 0x20, 0x66, 0x69, 0x6c, 0x65, 0x2c,
+    0x20, 0x61, 0x6e, 0x64, 0x20, 0x64, 0x69, 0x73,
+    0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x69, 0x6f,
+    0x6e, 0x20, 0x77, 0x68, 0x65, 0x6e, 0x20, 0x6e,
+    0x6f, 0x74, 0x20, 0x6c, 0x69, 0x6e, 0x6b, 0x65,
+    0x64, 0x20, 0x69, 0x6e, 0x74, 0x6f, 0x0a, 0x20,
+    0x2a, 0x20, 0x61, 0x20, 0x63, 0x6f, 0x6d, 0x62,
+    0x69, 0x6e, 0x65, 0x64, 0x20, 0x65, 0x78, 0x65,
+    0x63, 0x75, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x2e,
+    0x29, 0x0a, 0x20, 0x2a, 0x0a, 0x20, 0x2a, 0x20,
+    0x54, 0x68, 0x69, 0x73, 0x20, 0x66, 0x69, 0x6c,
+    0x65, 0x20, 0x69, 0x73, 0x20, 0x64, 0x69, 0x73,
+    0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x64,
+    0x20, 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20,
+    0x68, 0x6f, 0x70, 0x65, 0x20, 0x74, 0x68, 0x61,
+    0x74, 0x20, 0x69, 0x74, 0x20, 0x77, 0x69, 0x6c,
+    0x6c, 0x20, 0x62, 0x65, 0x20, 0x75, 0x73, 0x65,
+    0x66, 0x75, 0x6c, 0x2c, 0x20, 0x62, 0x75, 0x74,
+    0x0a, 0x20, 0x2a, 0x20, 0x57, 0x49, 0x54, 0x48,
+    0x4f, 0x55, 0x54, 0x20, 0x41, 0x4e, 0x59, 0x20,
+    0x57, 0x41, 0x52, 0x52, 0x41, 0x4e, 0x54, 0x59,
+    0x3b, 0x20, 0x77, 0x69, 0x74, 0x68, 0x6f, 0x75,
+    0x74, 0x20, 0x65, 0x76, 0x65, 0x6e, 0x20, 0x74,
+    0x68, 0x65, 0x20, 0x69, 0x6d, 0x70, 0x6c, 0x69,
+    0x65, 0x64, 0x20, 0x77, 0x61, 0x72, 0x72, 0x61,
+    0x6e, 0x74, 0x79, 0x20, 0x6f, 0x66, 0x0a, 0x20,
+    0x2a, 0x20, 0x4d, 0x45, 0x52, 0x43, 0x48, 0x41,
+    0x4e, 0x54, 0x41, 0x42, 0x49, 0x4c, 0x49, 0x54,
+    0x59, 0x20, 0x6f, 0x72, 0x20, 0x46, 0x49, 0x54,
+    0x4e, 0x45, 0x53, 0x53, 0x20, 0x46, 0x4f, 0x52,
+    0x20, 0x41, 0x20, 0x50, 0x41, 0x52, 0x54, 0x49,
+    0x43, 0x55, 0x4c, 0x41, 0x52, 0x20, 0x50, 0x55,
+    0x52, 0x50, 0x4f, 0x53, 0x45, 0x2e, 0x20, 0x20,
+    0x53, 0x65, 0x65, 0x20, 0x74, 0x68, 0x65, 0x20,
+    0x47, 0x4e, 0x55, 0x0a, 0x20, 0x2a, 0x20, 0x47,
+    0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c, 0x20, 0x50,
+    0x75, 0x62, 0x6c, 0x69, 0x63, 0x20, 0x4c, 0x69,
+    0x63, 0x65, 0x6e, 0x73, 0x65, 0x20, 0x66, 0x6f,
+    0x72, 0x20, 0x6d, 0x6f, 0x72, 0x65, 0x20, 0x64,
+    0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0x2e, 0x0a,
+    0x20, 0x2a, 0x0a, 0x20, 0x2a, 0x20, 0x59, 0x6f,
+    0x75, 0x20, 0x73, 0x68, 0x6f, 0x75, 0x6c, 0x64,
+    0x20, 0x68, 0x61, 0x76, 0x65, 0x20, 0x72, 0x65,
+    0x63, 0x65, 0x69, 0x76, 0x65, 0x64, 0x20, 0x61,
+    0x20, 0x63, 0x6f, 0x70, 0x79, 0x20, 0x6f, 0x66,
+    0x20, 0x74, 0x68, 0x65, 0x20, 0x47, 0x4e, 0x55,
+    0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
+    0x20, 0x50, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x20,
+    0x4c, 0x69, 0x63, 0x65, 0x6e, 0x73, 0x65, 0x0a,
+    0x20, 0x2a, 0x20, 0x61, 0x6c, 0x6f, 0x6e, 0x67,
+    0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x74, 0x68,
+    0x69, 0x73, 0x20, 0x70, 0x72, 0x6f, 0x67, 0x72,
+    0x61, 0x6d, 0x3b, 0x20, 0x73, 0x65, 0x65, 0x20,
+    0x74, 0x68, 0x65, 0x20, 0x66, 0x69, 0x6c, 0x65,
+    0x20, 0x43, 0x4f, 0x50, 0x59, 0x49, 0x4e, 0x47,
+    0x2e, 0x20, 0x20, 0x49, 0x66, 0x20, 0x6e, 0x6f,
+    0x74, 0x2c, 0x20, 0x77, 0x72, 0x69, 0x74, 0x65,
+    0x20, 0x74, 0x6f, 0x0a, 0x20, 0x2a, 0x20, 0x74,
+    0x68, 0x65, 0x20, 0x46, 0x72, 0x65, 0x65, 0x20,
+    0x53, 0x6f, 0x66, 0x74, 0x77, 0x61, 0x72, 0x65,
+    0x20, 0x46, 0x6f, 0x75, 0x6e, 0x64, 0x61, 0x74,
+    0x69, 0x6f, 0x6e, 0x2c, 0x20, 0x35, 0x31, 0x20,
+    0x46, 0x72, 0x61, 0x6e, 0x6b, 0x6c, 0x69, 0x6e,
+    0x20, 0x53, 0x74, 0x72, 0x65, 0x65, 0x74, 0x2c,
+    0x20, 0x46, 0x69, 0x66, 0x74, 0x68, 0x20, 0x46,
+    0x6c, 0x6f, 0x6f, 0x72, 0x2c, 0x0a, 0x20, 0x2a,
+    0x20, 0x42, 0x6f, 0x73, 0x74, 0x6f, 0x6e, 0x2c,
+    0x20, 0x4d, 0x41, 0x20, 0x30, 0x32, 0x31, 0x31,
+    0x30, 0x2d, 0x31, 0x33, 0x30, 0x31, 0x2c, 0x20,
+    0x55, 0x53, 0x41, 0x2e, 0x0a, 0x20, 0x2a, 0x2f,
+    0x0a,
+};
+
+/*
+ * SHA1 Hashes
+ */
+static char *commit_id = "3d7f8a6af076c8c3f20071a8935cdbe8228594d1";
+static char *tree_id = "dff2da90b254e1beb889d1f1f1288be1803782df";
+static char *tag_id = "09d373e1dfdc16b129ceec6dd649739911541e05";
+static char *zero_id = "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391";
+static char *one_id = "8b137891791fe96927ad78e64b0aad7bded08bdc";
+static char *two_id = "78981922613b2afb6025042ff6bd878ac1994e85";
+static char *some_id = "fd8430bc864cfcd5f10e5590f8a447e01b942bfe";
+
+/*
+ * In-memory objects
+ */
+static git_rawobj tree_obj = {
+	tree_data,
+	sizeof(tree_data),
+	GIT_OBJ_TREE
+};
+
+static git_rawobj tag_obj = {
+	tag_data,
+	sizeof(tag_data),
+	GIT_OBJ_TAG
+};
+
+static git_rawobj zero_obj = {
+	zero_data,
+	0,
+	GIT_OBJ_BLOB
+};
+
+static git_rawobj one_obj = {
+	one_data,
+	sizeof(one_data),
+	GIT_OBJ_BLOB
+};
+
+static git_rawobj two_obj = {
+	two_data,
+	sizeof(two_data),
+	GIT_OBJ_BLOB
+};
+
+static git_rawobj commit_obj = {
+	commit_data,
+	sizeof(commit_data),
+	GIT_OBJ_COMMIT
+};
+
+static git_rawobj some_obj = {
+	some_data,
+	sizeof(some_data),
+	GIT_OBJ_BLOB
+};
+
+static git_rawobj junk_obj = {
+	NULL,
+	0,
+	GIT_OBJ_BAD
+};
diff --git a/tests-clay/object/raw/fromstr.c b/tests-clay/object/raw/fromstr.c
new file mode 100644
index 0000000..6d732d4
--- /dev/null
+++ b/tests-clay/object/raw/fromstr.c
@@ -0,0 +1,30 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+
+void test_object_raw_fromstr__fail_on_invalid_oid_string(void)
+{
+	git_oid out;
+	cl_git_fail(git_oid_fromstr(&out, ""));
+	cl_git_fail(git_oid_fromstr(&out, "moo"));
+	cl_git_fail(git_oid_fromstr(&out, "16a67770b7d8d72317c4b775213c23a8bd74f5ez"));
+}
+
+void test_object_raw_fromstr__succeed_on_valid_oid_string(void)
+{
+	git_oid out;
+	unsigned char exp[] = {
+		0x16, 0xa6, 0x77, 0x70, 0xb7,
+		0xd8, 0xd7, 0x23, 0x17, 0xc4,
+		0xb7, 0x75, 0x21, 0x3c, 0x23,
+		0xa8, 0xbd, 0x74, 0xf5, 0xe0,
+	};
+
+	cl_git_pass(git_oid_fromstr(&out, "16a67770b7d8d72317c4b775213c23a8bd74f5e0"));
+	cl_git_pass(memcmp(out.id, exp, sizeof(out.id)));
+
+	cl_git_pass(git_oid_fromstr(&out, "16A67770B7D8D72317C4b775213C23A8BD74F5E0"));
+	cl_git_pass(memcmp(out.id, exp, sizeof(out.id)));
+
+}
diff --git a/tests-clay/object/raw/hash.c b/tests-clay/object/raw/hash.c
new file mode 100644
index 0000000..9974ed6
--- /dev/null
+++ b/tests-clay/object/raw/hash.c
@@ -0,0 +1,162 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+#include "hash.h"
+
+#include "data.h"
+
+static int hash_object(git_oid *oid, git_rawobj *obj)
+{
+	return git_odb_hash(oid, obj->data, obj->len, obj->type);
+}
+
+static char *hello_id = "22596363b3de40b06f981fb85d82312e8c0ed511";
+static char *hello_text = "hello world\n";
+
+static char *bye_id = "ce08fe4884650f067bd5703b6a59a8b3b3c99a09";
+static char *bye_text = "bye world\n";
+
+void test_object_raw_hash__hash_by_blocks(void)
+{
+    git_hash_ctx *ctx;
+    git_oid id1, id2;
+
+    cl_assert((ctx = git_hash_new_ctx()) != NULL);
+
+	/* should already be init'd */
+    git_hash_update(ctx, hello_text, strlen(hello_text));
+    git_hash_final(&id2, ctx);
+    cl_git_pass(git_oid_fromstr(&id1, hello_id));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+
+	/* reinit should permit reuse */
+    git_hash_init(ctx);
+    git_hash_update(ctx, bye_text, strlen(bye_text));
+    git_hash_final(&id2, ctx);
+    cl_git_pass(git_oid_fromstr(&id1, bye_id));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+
+    git_hash_free_ctx(ctx);
+}
+
+void test_object_raw_hash__hash_buffer_in_single_call(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, hello_id));
+    git_hash_buf(&id2, hello_text, strlen(hello_text));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_vector(void)
+{
+    git_oid id1, id2;
+    git_buf_vec vec[2];
+
+    cl_git_pass(git_oid_fromstr(&id1, hello_id));
+
+    vec[0].data = hello_text;
+    vec[0].len  = 4;
+    vec[1].data = hello_text+4;
+    vec[1].len  = strlen(hello_text)-4;
+
+    git_hash_vec(&id2, vec, 2);
+
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_junk_data(void)
+{
+    git_oid id, id_zero;
+
+    cl_git_pass(git_oid_fromstr(&id_zero, zero_id));
+
+    /* invalid types: */
+    junk_obj.data = some_data;
+    cl_git_fail(hash_object(&id, &junk_obj));
+
+    junk_obj.type = GIT_OBJ__EXT1;
+    cl_git_fail(hash_object(&id, &junk_obj));
+
+    junk_obj.type = GIT_OBJ__EXT2;
+    cl_git_fail(hash_object(&id, &junk_obj));
+
+    junk_obj.type = GIT_OBJ_OFS_DELTA;
+    cl_git_fail(hash_object(&id, &junk_obj));
+
+    junk_obj.type = GIT_OBJ_REF_DELTA;
+    cl_git_fail(hash_object(&id, &junk_obj));
+
+    /* data can be NULL only if len is zero: */
+    junk_obj.type = GIT_OBJ_BLOB;
+    junk_obj.data = NULL;
+    cl_git_pass(hash_object(&id, &junk_obj));
+    cl_assert(git_oid_cmp(&id, &id_zero) == 0);
+
+    junk_obj.len = 1;
+    cl_git_fail(hash_object(&id, &junk_obj));
+}
+
+void test_object_raw_hash__hash_commit_object(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, commit_id));
+    cl_git_pass(hash_object(&id2, &commit_obj));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_tree_object(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, tree_id));
+    cl_git_pass(hash_object(&id2, &tree_obj));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_tag_object(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, tag_id));
+    cl_git_pass(hash_object(&id2, &tag_obj));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_zero_length_object(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, zero_id));
+    cl_git_pass(hash_object(&id2, &zero_obj));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_one_byte_object(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, one_id));
+    cl_git_pass(hash_object(&id2, &one_obj));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_two_byte_object(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, two_id));
+    cl_git_pass(hash_object(&id2, &two_obj));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
+
+void test_object_raw_hash__hash_multi_byte_object(void)
+{
+    git_oid id1, id2;
+
+    cl_git_pass(git_oid_fromstr(&id1, some_id));
+    cl_git_pass(hash_object(&id2, &some_obj));
+    cl_assert(git_oid_cmp(&id1, &id2) == 0);
+}
diff --git a/tests-clay/object/raw/short.c b/tests-clay/object/raw/short.c
new file mode 100644
index 0000000..46e4fba
--- /dev/null
+++ b/tests-clay/object/raw/short.c
@@ -0,0 +1,94 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+#include "hash.h"
+
+void test_object_raw_short__oid_shortener_no_duplicates(void)
+{
+	git_oid_shorten *os;
+	int min_len;
+
+	os = git_oid_shorten_new(0);
+	cl_assert(os != NULL);
+
+	git_oid_shorten_add(os, "22596363b3de40b06f981fb85d82312e8c0ed511");
+	git_oid_shorten_add(os, "ce08fe4884650f067bd5703b6a59a8b3b3c99a09");
+	git_oid_shorten_add(os, "16a0123456789abcdef4b775213c23a8bd74f5e0");
+	min_len = git_oid_shorten_add(os, "ce08fe4884650f067bd5703b6a59a8b3b3c99a09");
+
+	cl_assert(min_len == GIT_OID_HEXSZ + 1);
+
+	git_oid_shorten_free(os);
+}
+
+void test_object_raw_short__oid_shortener_stresstest_git_oid_shorten(void)
+{
+#define MAX_OIDS 1000
+
+	git_oid_shorten *os;
+	char *oids[MAX_OIDS];
+	char number_buffer[16];
+	git_oid oid;
+	size_t i, j;
+
+	int min_len = 0, found_collision;
+
+	os = git_oid_shorten_new(0);
+	cl_assert(os != NULL);
+
+	/*
+	 * Insert in the shortener 1000 unique SHA1 ids
+	 */
+	for (i = 0; i < MAX_OIDS; ++i) {
+		char *oid_text;
+
+		sprintf(number_buffer, "%u", (unsigned int)i);
+		git_hash_buf(&oid, number_buffer, strlen(number_buffer));
+
+		oid_text = git__malloc(GIT_OID_HEXSZ + 1);
+		git_oid_fmt(oid_text, &oid);
+		oid_text[GIT_OID_HEXSZ] = 0;
+
+		min_len = git_oid_shorten_add(os, oid_text);
+		cl_assert(min_len >= 0);
+
+		oids[i] = oid_text;
+	}
+
+	/*
+	 * Compare the first `min_char - 1` characters of each
+	 * SHA1 OID. If the minimizer worked, we should find at
+	 * least one collision
+	 */
+	found_collision = 0;
+	for (i = 0; i < MAX_OIDS; ++i) {
+		for (j = 0; j < MAX_OIDS; ++j) {
+			if (i != j && memcmp(oids[i], oids[j], min_len - 1) == 0)
+				found_collision = 1;
+		}
+	}
+	cl_assert(found_collision == 1);
+
+	/*
+	 * Compare the first `min_char` characters of each
+	 * SHA1 OID. If the minimizer worked, every single preffix
+	 * should be unique.
+	 */
+	found_collision = 0;
+	for (i = 0; i < MAX_OIDS; ++i) {
+		for (j = 0; j < MAX_OIDS; ++j) {
+			if (i != j && memcmp(oids[i], oids[j], min_len) == 0)
+				found_collision = 1;
+		}
+	}
+	cl_assert(found_collision == 0);
+
+	/* cleanup */
+	for (i = 0; i < MAX_OIDS; ++i)
+		free(oids[i]);
+
+	git_oid_shorten_free(os);
+
+#undef MAX_OIDS
+}
diff --git a/tests-clay/object/raw/size.c b/tests-clay/object/raw/size.c
new file mode 100644
index 0000000..44c5b6c
--- /dev/null
+++ b/tests-clay/object/raw/size.c
@@ -0,0 +1,13 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+
+void test_object_raw_size__validate_oid_size(void)
+{
+	git_oid out;
+	cl_assert(20 == GIT_OID_RAWSZ);
+	cl_assert(40 == GIT_OID_HEXSZ);
+	cl_assert(sizeof(out) == GIT_OID_RAWSZ);
+	cl_assert(sizeof(out.id) == GIT_OID_RAWSZ);
+}
diff --git a/tests-clay/object/raw/type2string.c b/tests-clay/object/raw/type2string.c
new file mode 100644
index 0000000..109bc11
--- /dev/null
+++ b/tests-clay/object/raw/type2string.c
@@ -0,0 +1,54 @@
+
+#include "clay_libgit2.h"
+
+#include "odb.h"
+#include "hash.h"
+
+void test_object_raw_type2string__convert_type_to_string(void)
+{
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ_BAD), ""));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ__EXT1), ""));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ_COMMIT), "commit"));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ_TREE), "tree"));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ_BLOB), "blob"));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ_TAG), "tag"));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ__EXT2), ""));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ_OFS_DELTA), "OFS_DELTA"));
+	cl_assert(!strcmp(git_object_type2string(GIT_OBJ_REF_DELTA), "REF_DELTA"));
+
+	cl_assert(!strcmp(git_object_type2string(-2), ""));
+	cl_assert(!strcmp(git_object_type2string(8), ""));
+	cl_assert(!strcmp(git_object_type2string(1234), ""));
+}
+
+void test_object_raw_type2string__convert_string_to_type(void)
+{
+	cl_assert(git_object_string2type(NULL) == GIT_OBJ_BAD);
+	cl_assert(git_object_string2type("") == GIT_OBJ_BAD);
+	cl_assert(git_object_string2type("commit") == GIT_OBJ_COMMIT);
+	cl_assert(git_object_string2type("tree") == GIT_OBJ_TREE);
+	cl_assert(git_object_string2type("blob") == GIT_OBJ_BLOB);
+	cl_assert(git_object_string2type("tag") == GIT_OBJ_TAG);
+	cl_assert(git_object_string2type("OFS_DELTA") == GIT_OBJ_OFS_DELTA);
+	cl_assert(git_object_string2type("REF_DELTA") == GIT_OBJ_REF_DELTA);
+
+	cl_assert(git_object_string2type("CoMmIt") == GIT_OBJ_BAD);
+	cl_assert(git_object_string2type("hohoho") == GIT_OBJ_BAD);
+}
+
+void test_object_raw_type2string__check_type_is_loose(void)
+{
+	cl_assert(git_object_typeisloose(GIT_OBJ_BAD) == 0);
+	cl_assert(git_object_typeisloose(GIT_OBJ__EXT1) == 0);
+	cl_assert(git_object_typeisloose(GIT_OBJ_COMMIT) == 1);
+	cl_assert(git_object_typeisloose(GIT_OBJ_TREE) == 1);
+	cl_assert(git_object_typeisloose(GIT_OBJ_BLOB) == 1);
+	cl_assert(git_object_typeisloose(GIT_OBJ_TAG) == 1);
+	cl_assert(git_object_typeisloose(GIT_OBJ__EXT2) == 0);
+	cl_assert(git_object_typeisloose(GIT_OBJ_OFS_DELTA) == 0);
+	cl_assert(git_object_typeisloose(GIT_OBJ_REF_DELTA) == 0);
+
+	cl_assert(git_object_typeisloose(-2) == 0);
+	cl_assert(git_object_typeisloose(8) == 0);
+	cl_assert(git_object_typeisloose(1234) == 0);
+}