t-reftable-record: add comparison tests for obj records

In the current testing setup for obj records, the comparison
functions for obj records, reftable_obj_record_cmp_void() and
reftable_obj_record_equal_void() are left untested.

Add tests for the same by using the wrapper functions
reftable_record_cmp() and reftable_record_equal() for
reftable_index_record_cmp_void() and reftable_index_record_equal_void()
respectively.

Mentored-by: Patrick Steinhardt <[email protected]>
Mentored-by: Christian Couder <[email protected]>
Signed-off-by: Chandra Pratap <[email protected]>
Acked-by: Karthik Nayak <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: Chandra Pratap

t/unit-tests/t-reftable-record.c

@@ -299,6 +299,44 @@ static void t_key_roundtrip(void)
 	strbuf_release(&roundtrip);
 }
 
+static void t_reftable_obj_record_comparison(void)
+{
+
+	uint8_t id_bytes[] = { 0, 1, 2, 3, 4, 5, 6 };
+	uint64_t offsets[] = { 0, 16, 32, 48, 64, 80, 96, 112};
+	struct reftable_record in[3] = {
+		{
+			.type = BLOCK_TYPE_OBJ,
+			.u.obj.hash_prefix = id_bytes,
+			.u.obj.hash_prefix_len = 7,
+			.u.obj.offsets = offsets,
+			.u.obj.offset_len = 8,
+		},
+		{
+			.type = BLOCK_TYPE_OBJ,
+			.u.obj.hash_prefix = id_bytes,
+			.u.obj.hash_prefix_len = 7,
+			.u.obj.offsets = offsets,
+			.u.obj.offset_len = 5,
+		},
+		{
+			.type = BLOCK_TYPE_OBJ,
+			.u.obj.hash_prefix = id_bytes,
+			.u.obj.hash_prefix_len = 5,
+		},
+	};
+
+	check(!reftable_record_equal(&in[0], &in[1], GIT_SHA1_RAWSZ));
+	check(!reftable_record_cmp(&in[0], &in[1]));
+
+	check(!reftable_record_equal(&in[1], &in[2], GIT_SHA1_RAWSZ));
+	check_int(reftable_record_cmp(&in[1], &in[2]), >, 0);
+
+	in[1].u.obj.offset_len = in[0].u.obj.offset_len;
+	check(reftable_record_equal(&in[0], &in[1], GIT_SHA1_RAWSZ));
+	check(!reftable_record_cmp(&in[0], &in[1]));
+}
+
 static void t_reftable_obj_record_roundtrip(void)
 {
 	uint8_t testHash1[GIT_SHA1_RAWSZ] = { 1, 2, 3, 4, 0 };
@@ -443,6 +481,7 @@ int cmd_main(int argc, const char *argv[])
 	TEST(t_reftable_ref_record_comparison(), "comparison operations work on ref record");
 	TEST(t_reftable_log_record_comparison(), "comparison operations work on log record");
 	TEST(t_reftable_index_record_comparison(), "comparison operations work on index record");
+	TEST(t_reftable_obj_record_comparison(), "comparison operations work on obj record");
 	TEST(t_reftable_log_record_roundtrip(), "record operations work on log record");
 	TEST(t_reftable_ref_record_roundtrip(), "record operations work on ref record");
 	TEST(t_varint_roundtrip(), "put_var_int and get_var_int work");