t: move reftable/block_test.c to the unit testing framework

reftable/block_test.c exercises the functions defined in
reftable/block.{c, h}. Migrate reftable/block_test.c to the unit
testing framework. Migration involves refactoring the tests
to use the unit testing framework instead of reftable's test
framework and renaming the tests to follow the unit-tests'
naming conventions.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Makefile

@@ -1341,6 +1341,7 @@ UNIT_TEST_PROGRAMS += t-oidmap
 UNIT_TEST_PROGRAMS += t-oidtree
 UNIT_TEST_PROGRAMS += t-prio-queue
 UNIT_TEST_PROGRAMS += t-reftable-basics
+UNIT_TEST_PROGRAMS += t-reftable-block
 UNIT_TEST_PROGRAMS += t-reftable-merged
 UNIT_TEST_PROGRAMS += t-reftable-pq
 UNIT_TEST_PROGRAMS += t-reftable-record
@@ -2682,7 +2683,6 @@ REFTABLE_OBJS += reftable/stack.o
 REFTABLE_OBJS += reftable/tree.o
 REFTABLE_OBJS += reftable/writer.o
 
-REFTABLE_TEST_OBJS += reftable/block_test.o
 REFTABLE_TEST_OBJS += reftable/dump.o
 REFTABLE_TEST_OBJS += reftable/readwrite_test.o
 REFTABLE_TEST_OBJS += reftable/stack_test.o

reftable/reftable-tests.h

@@ -10,7 +10,6 @@ https://developers.google.com/open-source/licenses/bsd
 #define REFTABLE_TESTS_H
 
 int basics_test_main(int argc, const char **argv);
-int block_test_main(int argc, const char **argv);
 int record_test_main(int argc, const char **argv);
 int readwrite_test_main(int argc, const char **argv);
 int stack_test_main(int argc, const char **argv);

t/helper/test-reftable.c

@@ -5,7 +5,6 @@
 int cmd__reftable(int argc, const char **argv)
 {
 	/* test from simple to complex. */
-	block_test_main(argc, argv);
 	readwrite_test_main(argc, argv);
 	stack_test_main(argc, argv);
 	return 0;

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

@@ -6,17 +6,13 @@ license that can be found in the LICENSE file or at
 https://developers.google.com/open-source/licenses/bsd
 */
 
-#include "block.h"
+#include "test-lib.h"
+#include "reftable/block.h"
+#include "reftable/blocksource.h"
+#include "reftable/constants.h"
+#include "reftable/reftable-error.h"
 
-#include "system.h"
+static void t_block_read_write(void)
-#include "blocksource.h"
-#include "basics.h"
-#include "constants.h"
-#include "record.h"
-#include "test_framework.h"
-#include "reftable-tests.h"
-
-static void test_block_read_write(void)
 {
 	const int header_off = 21; /* random */
 	char *names[30];
@@ -45,7 +41,7 @@ static void test_block_read_write(void)
 	rec.u.ref.refname = (char *) "";
 	rec.u.ref.value_type = REFTABLE_REF_DELETION;
 	n = block_writer_add(&bw, &rec);
-	EXPECT(n == REFTABLE_API_ERROR);
+	check_int(n, ==, REFTABLE_API_ERROR);
 
 	for (i = 0; i < N; i++) {
 		char name[100];
@@ -59,11 +55,11 @@ static void test_block_read_write(void)
 		n = block_writer_add(&bw, &rec);
 		rec.u.ref.refname = NULL;
 		rec.u.ref.value_type = REFTABLE_REF_DELETION;
-		EXPECT(n == 0);
+		check_int(n, ==, 0);
 	}
 
 	n = block_writer_finish(&bw);
-	EXPECT(n > 0);
+	check_int(n, >, 0);
 
 	block_writer_release(&bw);
 
@@ -73,11 +69,11 @@ static void test_block_read_write(void)
 
 	while (1) {
 		int r = block_iter_next(&it, &rec);
-		EXPECT(r >= 0);
+		check_int(r, >=, 0);
 		if (r > 0) {
 			break;
 		}
-		EXPECT_STREQ(names[j], rec.u.ref.refname);
+		check_str(names[j], rec.u.ref.refname);
 		j++;
 	}
 
@@ -90,20 +86,20 @@ static void test_block_read_write(void)
 		strbuf_addstr(&want, names[i]);
 
 		n = block_iter_seek_key(&it, &br, &want);
-		EXPECT(n == 0);
+		check_int(n, ==, 0);
 
 		n = block_iter_next(&it, &rec);
-		EXPECT(n == 0);
+		check_int(n, ==, 0);
 
-		EXPECT_STREQ(names[i], rec.u.ref.refname);
+		check_str(names[i], rec.u.ref.refname);
 
 		want.len--;
 		n = block_iter_seek_key(&it, &br, &want);
-		EXPECT(n == 0);
+		check_int(n, ==, 0);
 
 		n = block_iter_next(&it, &rec);
-		EXPECT(n == 0);
+		check_int(n, ==, 0);
-		EXPECT_STREQ(names[10 * (i / 10)], rec.u.ref.refname);
+		check_str(names[10 * (i / 10)], rec.u.ref.refname);
 
 		block_iter_close(&it);
 	}
@@ -116,8 +112,9 @@ static void test_block_read_write(void)
 	}
 }
 
-int block_test_main(int argc, const char *argv[])
+int cmd_main(int argc, const char *argv[])
 {
-	RUN_TEST(test_block_read_write);
+	TEST(t_block_read_write(), "read-write operations on blocks work");
-	return 0;
+
+	return test_done();
 }