t/unit-tests: convert reftable readwrite test to use clar

Adapt reftable readwrite test file to use clar by using clar assertions
where necessary.

Signed-off-by: Seyi Kuforiji <kuforiji98@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

3 files changed, 179 insertions, 230 deletions

diff --git a/Makefile b/Makefile
index e4b90052be..1c91787b6a 100644
--- a/Makefile
+++ b/Makefile
@@ -1368,6 +1368,7 @@ CLAR_TEST_SUITES += u-reftable-basics
 CLAR_TEST_SUITES += u-reftable-block
 CLAR_TEST_SUITES += u-reftable-merged
 CLAR_TEST_SUITES += u-reftable-pq
+CLAR_TEST_SUITES += u-reftable-readwrite
 CLAR_TEST_SUITES += u-reftable-table
 CLAR_TEST_SUITES += u-reftable-tree
 CLAR_TEST_SUITES += u-strbuf
@@ -1382,7 +1383,6 @@ CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/unit-test.o
 CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/lib-oid.o
 CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/lib-reftable-clar.o
 
-UNIT_TEST_PROGRAMS += t-reftable-readwrite
 UNIT_TEST_PROGRAMS += t-reftable-record
 UNIT_TEST_PROGRAMS += t-reftable-stack
 UNIT_TEST_PROGS = $(patsubst %,$(UNIT_TEST_BIN)/%$X,$(UNIT_TEST_PROGRAMS))
diff --git a/t/meson.build b/t/meson.build
index 46d3a8580b..5189176472 100644
--- a/t/meson.build
+++ b/t/meson.build
@@ -12,6 +12,7 @@ clar_test_suites = [
   'unit-tests/u-reftable-block.c',
   'unit-tests/u-reftable-merged.c',
   'unit-tests/u-reftable-pq.c',
+  'unit-tests/u-reftable-readwrite.c',
   'unit-tests/u-reftable-table.c',
   'unit-tests/u-reftable-tree.c',
   'unit-tests/u-strbuf.c',
@@ -60,7 +61,6 @@ clar_unit_tests = executable('unit-tests',
 test('unit-tests', clar_unit_tests)
 
 unit_test_programs = [
-  'unit-tests/t-reftable-readwrite.c',
   'unit-tests/t-reftable-record.c',
   'unit-tests/t-reftable-stack.c',
 ]
diff --git a/t/unit-tests/t-reftable-readwrite.c b/t/unit-tests/u-reftable-readwrite.c
index 4c49129439..9aac74a011 100644
--- a/t/unit-tests/t-reftable-readwrite.c
+++ b/t/unit-tests/u-reftable-readwrite.c
@@ -8,8 +8,8 @@ https://developers.google.com/open-source/licenses/bsd
 
 #define DISABLE_SIGN_COMPARE_WARNINGS
 
-#include "test-lib.h"
-#include "lib-reftable.h"
+#include "unit-test.h"
+#include "lib-reftable-clar.h"
 #include "reftable/basics.h"
 #include "reftable/blocksource.h"
 #include "reftable/reftable-error.h"
@@ -19,24 +19,24 @@ https://developers.google.com/open-source/licenses/bsd
 
 static const int update_index = 5;
 
-static void t_buffer(void)
+void test_reftable_readwrite__buffer(void)
 {
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
 	struct reftable_block_source source = { 0 };
 	struct reftable_block_data out = { 0 };
 	int n;
 	uint8_t in[] = "hello";
-	check(!reftable_buf_add(&buf, in, sizeof(in)));
+	cl_assert_equal_i(reftable_buf_add(&buf, in, sizeof(in)), 0);
 	block_source_from_buf(&source, &buf);
-	check_int(block_source_size(&source), ==, 6);
+	cl_assert_equal_i(block_source_size(&source), 6);
 	n = block_source_read_data(&source, &out, 0, sizeof(in));
-	check_int(n, ==, sizeof(in));
-	check(!memcmp(in, out.data, n));
+	cl_assert_equal_i(n, sizeof(in));
+	cl_assert(!memcmp(in, out.data, n));
 	block_source_release_data(&out);
 
 	n = block_source_read_data(&source, &out, 1, 2);
-	check_int(n, ==, 2);
-	check(!memcmp(out.data, "el", 2));
+	cl_assert_equal_i(n, 2);
+	cl_assert(!memcmp(out.data, "el", 2));
 
 	block_source_release_data(&out);
 	block_source_close(&source);
@@ -55,41 +55,41 @@ static void write_table(char ***names, struct reftable_buf *buf, int N,
 	int i;
 
 	REFTABLE_CALLOC_ARRAY(*names, N + 1);
-	check(*names != NULL);
+	cl_assert(*names != NULL);
 	REFTABLE_CALLOC_ARRAY(refs, N);
-	check(refs != NULL);
+	cl_assert(refs != NULL);
 	REFTABLE_CALLOC_ARRAY(logs, N);
-	check(logs != NULL);
+	cl_assert(logs != NULL);
 
 	for (i = 0; i < N; i++) {
 		refs[i].refname = (*names)[i] = xstrfmt("refs/heads/branch%02d", i);
 		refs[i].update_index = update_index;
 		refs[i].value_type = REFTABLE_REF_VAL1;
-		t_reftable_set_hash(refs[i].value.val1, i, REFTABLE_HASH_SHA1);
+		cl_reftable_set_hash(refs[i].value.val1, i,
+				     REFTABLE_HASH_SHA1);
 	}
 
 	for (i = 0; i < N; i++) {
 		logs[i].refname = (*names)[i];
 		logs[i].update_index = update_index;
 		logs[i].value_type = REFTABLE_LOG_UPDATE;
-		t_reftable_set_hash(logs[i].value.update.new_hash, i,
-				    REFTABLE_HASH_SHA1);
+		cl_reftable_set_hash(logs[i].value.update.new_hash, i,
+				     REFTABLE_HASH_SHA1);
 		logs[i].value.update.message = (char *) "message";
 	}
 
-	t_reftable_write_to_buf(buf, refs, N, logs, N, &opts);
+	cl_reftable_write_to_buf(buf, refs, N, logs, N, &opts);
 
 	reftable_free(refs);
 	reftable_free(logs);
 }
 
-static void t_log_buffer_size(void)
+void test_reftable_readwrite__log_buffer_size(void)
 {
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
 	struct reftable_write_options opts = {
 		.block_size = 4096,
 	};
-	int err;
 	int i;
 	struct reftable_log_record
 		log = { .refname = (char *) "refs/heads/master",
@@ -102,7 +102,8 @@ static void t_log_buffer_size(void)
 					   .time = 0x5e430672,
 					   .message = (char *) "commit: 9\n",
 				   } } };
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf,
+							      &opts);
 
 	/* This tests buffer extension for log compression. Must use a random
 	   hash, to ensure that the compressed part is larger than the original.
@@ -112,22 +113,19 @@ static void t_log_buffer_size(void)
 		log.value.update.new_hash[i] = (uint8_t)(git_rand(0) % 256);
 	}
 	reftable_writer_set_limits(w, update_index, update_index);
-	err = reftable_writer_add_log(w, &log);
-	check(!err);
-	err = reftable_writer_close(w);
-	check(!err);
+	cl_assert_equal_i(reftable_writer_add_log(w, &log), 0);
+	cl_assert_equal_i(reftable_writer_close(w), 0);
 	reftable_writer_free(w);
 	reftable_buf_release(&buf);
 }
 
-static void t_log_overflow(void)
+void test_reftable_readwrite__log_overflow(void)
 {
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
 	char msg[256] = { 0 };
 	struct reftable_write_options opts = {
 		.block_size = ARRAY_SIZE(msg),
 	};
-	int err;
 	struct reftable_log_record log = {
 		.refname = (char *) "refs/heads/master",
 		.update_index = update_index,
@@ -144,21 +142,22 @@ static void t_log_overflow(void)
 			},
 		},
 	};
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf,
+							      &opts);
 
 	memset(msg, 'x', sizeof(msg) - 1);
 	reftable_writer_set_limits(w, update_index, update_index);
-	err = reftable_writer_add_log(w, &log);
-	check_int(err, ==, REFTABLE_ENTRY_TOO_BIG_ERROR);
+	cl_assert_equal_i(reftable_writer_add_log(w, &log), REFTABLE_ENTRY_TOO_BIG_ERROR);
 	reftable_writer_free(w);
 	reftable_buf_release(&buf);
 }
 
-static void t_log_write_limits(void)
+void test_reftable_readwrite__log_write_limits(void)
 {
 	struct reftable_write_options opts = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf,
+							      &opts);
 	struct reftable_log_record log = {
 		.refname = (char *)"refs/head/master",
 		.update_index = 0,
@@ -174,29 +173,25 @@ static void t_log_write_limits(void)
 			},
 		},
 	};
-	int err;
 
 	reftable_writer_set_limits(w, 1, 1);
 
 	/* write with update_index (0) below set limits (1, 1) */
-	err = reftable_writer_add_log(w, &log);
-	check_int(err, ==, 0);
+	cl_assert_equal_i(reftable_writer_add_log(w, &log), 0);
 
 	/* write with update_index (1) in the set limits (1, 1) */
 	log.update_index = 1;
-	err = reftable_writer_add_log(w, &log);
-	check_int(err, ==, 0);
+	cl_assert_equal_i(reftable_writer_add_log(w, &log), 0);
 
 	/* write with update_index (3) above set limits (1, 1) */
 	log.update_index = 3;
-	err = reftable_writer_add_log(w, &log);
-	check_int(err, ==, REFTABLE_API_ERROR);
+	cl_assert_equal_i(reftable_writer_add_log(w, &log), REFTABLE_API_ERROR);
 
 	reftable_writer_free(w);
 	reftable_buf_release(&buf);
 }
 
-static void t_log_write_read(void)
+void test_reftable_readwrite__log_write_read(void)
 {
 	struct reftable_write_options opts = {
 		.block_size = 256,
@@ -207,13 +202,14 @@ static void t_log_write_read(void)
 	struct reftable_table *table;
 	struct reftable_block_source source = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf, &opts);
 	const struct reftable_stats *stats = NULL;
-	int N = 2, err, i, n;
+	int N = 2, i;
 	char **names;
+	int err;
 
 	names = reftable_calloc(N + 1, sizeof(*names));
-	check(names != NULL);
+	cl_assert(names != NULL);
 
 	reftable_writer_set_limits(w, 0, N);
 
@@ -225,8 +221,7 @@ static void t_log_write_read(void)
 		ref.refname = name;
 		ref.update_index = i;
 
-		err = reftable_writer_add_ref(w, &ref);
-		check(!err);
+		cl_assert_equal_i(reftable_writer_add_ref(w, &ref), 0);
 	}
 
 	for (i = 0; i < N; i++) {
@@ -235,60 +230,57 @@ static void t_log_write_read(void)
 		log.refname = names[i];
 		log.update_index = i;
 		log.value_type = REFTABLE_LOG_UPDATE;
-		t_reftable_set_hash(log.value.update.old_hash, i,
-				    REFTABLE_HASH_SHA1);
-		t_reftable_set_hash(log.value.update.new_hash, i + 1,
-				    REFTABLE_HASH_SHA1);
+		cl_reftable_set_hash(log.value.update.old_hash, i,
+				     REFTABLE_HASH_SHA1);
+		cl_reftable_set_hash(log.value.update.new_hash, i + 1,
+				     REFTABLE_HASH_SHA1);
 
-		err = reftable_writer_add_log(w, &log);
-		check(!err);
+		cl_assert_equal_i(reftable_writer_add_log(w, &log), 0);
 	}
 
-	n = reftable_writer_close(w);
-	check_int(n, ==, 0);
+	cl_assert_equal_i(reftable_writer_close(w), 0);
 
 	stats = reftable_writer_stats(w);
-	check_int(stats->log_stats.blocks, >, 0);
+	cl_assert(stats->log_stats.blocks > 0);
 	reftable_writer_free(w);
 	w = NULL;
 
 	block_source_from_buf(&source, &buf);
 
 	err = reftable_table_new(&table, &source, "file.log");
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_table_init_ref_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_iterator_seek_ref(&it, names[N - 1]);
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_iterator_next_ref(&it, &ref);
-	check(!err);
+	cl_assert(!err);
 
 	/* end of iteration. */
-	err = reftable_iterator_next_ref(&it, &ref);
-	check_int(err, >, 0);
+	cl_assert(reftable_iterator_next_ref(&it, &ref) > 0);
 
 	reftable_iterator_destroy(&it);
 	reftable_ref_record_release(&ref);
 
 	err = reftable_table_init_log_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_log(&it, "");
-	check(!err);
+	cl_assert(!err);
 
 	for (i = 0; ; i++) {
 		int err = reftable_iterator_next_log(&it, &log);
 		if (err > 0)
 			break;
-		check(!err);
-		check_str(names[i], log.refname);
-		check_int(i, ==, log.update_index);
+		cl_assert(!err);
+		cl_assert_equal_s(names[i], log.refname);
+		cl_assert_equal_i(i, log.update_index);
 		reftable_log_record_release(&log);
 	}
 
-	check_int(i, ==, N);
+	cl_assert_equal_i(i, N);
 	reftable_iterator_destroy(&it);
 
 	/* cleanup. */
@@ -297,7 +289,7 @@ static void t_log_write_read(void)
 	reftable_table_decref(table);
 }
 
-static void t_log_zlib_corruption(void)
+void test_reftable_readwrite__log_zlib_corruption(void)
 {
 	struct reftable_write_options opts = {
 		.block_size = 256,
@@ -306,10 +298,12 @@ static void t_log_zlib_corruption(void)
 	struct reftable_table *table;
 	struct reftable_block_source source = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf,
+							      &opts);
 	const struct reftable_stats *stats = NULL;
 	char message[100] = { 0 };
-	int err, i, n;
+	int i;
+	int err;
 	struct reftable_log_record log = {
 		.refname = (char *) "refname",
 		.value_type = REFTABLE_LOG_UPDATE,
@@ -329,14 +323,11 @@ static void t_log_zlib_corruption(void)
 
 	reftable_writer_set_limits(w, 1, 1);
 
-	err = reftable_writer_add_log(w, &log);
-	check(!err);
-
-	n = reftable_writer_close(w);
-	check_int(n, ==, 0);
+	cl_assert_equal_i(reftable_writer_add_log(w, &log), 0);
+	cl_assert_equal_i(reftable_writer_close(w), 0);
 
 	stats = reftable_writer_stats(w);
-	check_int(stats->log_stats.blocks, >, 0);
+	cl_assert(stats->log_stats.blocks > 0);
 	reftable_writer_free(w);
 	w = NULL;
 
@@ -346,12 +337,12 @@ static void t_log_zlib_corruption(void)
 	block_source_from_buf(&source, &buf);
 
 	err = reftable_table_new(&table, &source, "file.log");
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_table_init_log_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_log(&it, "refname");
-	check_int(err, ==, REFTABLE_ZLIB_ERROR);
+	cl_assert_equal_i(err, REFTABLE_ZLIB_ERROR);
 
 	reftable_iterator_destroy(&it);
 
@@ -360,7 +351,7 @@ static void t_log_zlib_corruption(void)
 	reftable_buf_release(&buf);
 }
 
-static void t_table_read_write_sequential(void)
+void test_reftable_readwrite__table_read_write_sequential(void)
 {
 	char **names;
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
@@ -376,24 +367,24 @@ static void t_table_read_write_sequential(void)
 	block_source_from_buf(&source, &buf);
 
 	err = reftable_table_new(&table, &source, "file.ref");
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_table_init_ref_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_ref(&it, "");
-	check(!err);
+	cl_assert(!err);
 
 	for (j = 0; ; j++) {
 		struct reftable_ref_record ref = { 0 };
 		int r = reftable_iterator_next_ref(&it, &ref);
-		check_int(r, >=, 0);
+		cl_assert(r >= 0);
 		if (r > 0)
 			break;
-		check_str(names[j], ref.refname);
-		check_int(update_index, ==, ref.update_index);
+		cl_assert_equal_s(names[j], ref.refname);
+		cl_assert_equal_i(update_index, ref.update_index);
 		reftable_ref_record_release(&ref);
 	}
-	check_int(j, ==, N);
+	cl_assert_equal_i(j, N);
 
 	reftable_iterator_destroy(&it);
 	reftable_table_decref(table);
@@ -401,42 +392,42 @@ static void t_table_read_write_sequential(void)
 	free_names(names);
 }
 
-static void t_table_write_small_table(void)
+void test_reftable_readwrite__table_write_small_table(void)
 {
 	char **names;
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
 	int N = 1;
 	write_table(&names, &buf, N, 4096, REFTABLE_HASH_SHA1);
-	check_int(buf.len, <, 200);
+	cl_assert(buf.len < 200);
 	reftable_buf_release(&buf);
 	free_names(names);
 }
 
-static void t_table_read_api(void)
+void test_reftable_readwrite__table_read_api(void)
 {
 	char **names;
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
 	int N = 50;
 	struct reftable_table *table;
 	struct reftable_block_source source = { 0 };
-	int err;
 	struct reftable_log_record log = { 0 };
 	struct reftable_iterator it = { 0 };
+	int err;
 
 	write_table(&names, &buf, N, 256, REFTABLE_HASH_SHA1);
 
 	block_source_from_buf(&source, &buf);
 
 	err = reftable_table_new(&table, &source, "file.ref");
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_table_init_ref_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_ref(&it, names[0]);
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_iterator_next_log(&it, &log);
-	check_int(err, ==, REFTABLE_API_ERROR);
+	cl_assert_equal_i(err, REFTABLE_API_ERROR);
 
 	reftable_buf_release(&buf);
 	free_names(names);
@@ -464,42 +455,43 @@ static void t_table_read_write_seek(int index, enum reftable_hash hash_id)
 	block_source_from_buf(&source, &buf);
 
 	err = reftable_table_new(&table, &source, "file.ref");
-	check(!err);
-	check_int(hash_id, ==, reftable_table_hash_id(table));
+	cl_assert(!err);
+	cl_assert_equal_i(hash_id, reftable_table_hash_id(table));
 
 	if (!index) {
 		table->ref_offsets.index_offset = 0;
 	} else {
-		check_int(table->ref_offsets.index_offset, >, 0);
+		cl_assert(table->ref_offsets.index_offset > 0);
 	}
 
 	for (i = 1; i < N; i++) {
 		err = reftable_table_init_ref_iterator(table, &it);
-		check(!err);
+		cl_assert(!err);
 		err = reftable_iterator_seek_ref(&it, names[i]);
-		check(!err);
+		cl_assert(!err);
 		err = reftable_iterator_next_ref(&it, &ref);
-		check(!err);
-		check_str(names[i], ref.refname);
-		check_int(REFTABLE_REF_VAL1, ==, ref.value_type);
-		check_int(i, ==, ref.value.val1[0]);
+		cl_assert(!err);
+		cl_assert_equal_s(names[i], ref.refname);
+		cl_assert_equal_i(REFTABLE_REF_VAL1, ref.value_type);
+		cl_assert_equal_i(i, ref.value.val1[0]);
 
 		reftable_ref_record_release(&ref);
 		reftable_iterator_destroy(&it);
 	}
 
-	check(!reftable_buf_addstr(&pastLast, names[N - 1]));
-	check(!reftable_buf_addstr(&pastLast, "/"));
+	cl_assert_equal_i(reftable_buf_addstr(&pastLast, names[N - 1]),
+					      0);
+	cl_assert_equal_i(reftable_buf_addstr(&pastLast, "/"), 0);
 
 	err = reftable_table_init_ref_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_ref(&it, pastLast.buf);
 	if (err == 0) {
 		struct reftable_ref_record ref = { 0 };
 		int err = reftable_iterator_next_ref(&it, &ref);
-		check_int(err, >, 0);
+		cl_assert(err > 0);
 	} else {
-		check_int(err, >, 0);
+		cl_assert(err > 0);
 	}
 
 	reftable_buf_release(&pastLast);
@@ -510,17 +502,17 @@ static void t_table_read_write_seek(int index, enum reftable_hash hash_id)
 	reftable_table_decref(table);
 }
 
-static void t_table_read_write_seek_linear(void)
+void test_reftable_readwrite__table_read_write_seek_linear(void)
 {
 	t_table_read_write_seek(0, REFTABLE_HASH_SHA1);
 }
 
-static void t_table_read_write_seek_linear_sha256(void)
+void test_reftable_readwrite__table_read_write_seek_linear_sha256(void)
 {
 	t_table_read_write_seek(0, REFTABLE_HASH_SHA256);
 }
 
-static void t_table_read_write_seek_index(void)
+void test_reftable_readwrite__table_read_write_seek_index(void)
 {
 	t_table_read_write_seek(1, REFTABLE_HASH_SHA1);
 }
@@ -538,14 +530,16 @@ static void t_table_refs_for(int indexed)
 	struct reftable_table *table;
 	struct reftable_block_source source = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf,
+							      &opts);
 	struct reftable_iterator it = { 0 };
-	int N = 50, n, j, err, i;
+	int N = 50, j, i;
+	int err;
 
 	want_names = reftable_calloc(N + 1, sizeof(*want_names));
-	check(want_names != NULL);
+	cl_assert(want_names != NULL);
 
-	t_reftable_set_hash(want_hash, 4, REFTABLE_HASH_SHA1);
+	cl_reftable_set_hash(want_hash, 4, REFTABLE_HASH_SHA1);
 
 	for (i = 0; i < N; i++) {
 		uint8_t hash[REFTABLE_HASH_SIZE_SHA1];
@@ -561,24 +555,22 @@ static void t_table_refs_for(int indexed)
 		ref.refname = name;
 
 		ref.value_type = REFTABLE_REF_VAL2;
-		t_reftable_set_hash(ref.value.val2.value, i / 4,
-				    REFTABLE_HASH_SHA1);
-		t_reftable_set_hash(ref.value.val2.target_value, 3 + i / 4,
-				    REFTABLE_HASH_SHA1);
+		cl_reftable_set_hash(ref.value.val2.value, i / 4,
+				     REFTABLE_HASH_SHA1);
+		cl_reftable_set_hash(ref.value.val2.target_value,
+				     3 + i / 4, REFTABLE_HASH_SHA1);
 
 		/* 80 bytes / entry, so 3 entries per block. Yields 17
 		 */
 		/* blocks. */
-		n = reftable_writer_add_ref(w, &ref);
-		check_int(n, ==, 0);
+		cl_assert_equal_i(reftable_writer_add_ref(w, &ref), 0);
 
 		if (!memcmp(ref.value.val2.value, want_hash, REFTABLE_HASH_SIZE_SHA1) ||
 		    !memcmp(ref.value.val2.target_value, want_hash, REFTABLE_HASH_SIZE_SHA1))
 			want_names[want_names_len++] = xstrdup(name);
 	}
 
-	n = reftable_writer_close(w);
-	check_int(n, ==, 0);
+	cl_assert_equal_i(reftable_writer_close(w), 0);
 
 	reftable_writer_free(w);
 	w = NULL;
@@ -586,29 +578,29 @@ static void t_table_refs_for(int indexed)
 	block_source_from_buf(&source, &buf);
 
 	err = reftable_table_new(&table, &source, "file.ref");
-	check(!err);
+	cl_assert(!err);
 	if (!indexed)
 		table->obj_offsets.is_present = 0;
 
 	err = reftable_table_init_ref_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_ref(&it, "");
-	check(!err);
+	cl_assert(!err);
 	reftable_iterator_destroy(&it);
 
 	err = reftable_table_refs_for(table, &it, want_hash);
-	check(!err);
+	cl_assert(!err);
 
 	for (j = 0; ; j++) {
 		int err = reftable_iterator_next_ref(&it, &ref);
-		check_int(err, >=, 0);
+		cl_assert(err >= 0);
 		if (err > 0)
 			break;
-		check_int(j, <, want_names_len);
-		check_str(ref.refname, want_names[j]);
+		cl_assert(j < want_names_len);
+		cl_assert_equal_s(ref.refname, want_names[j]);
 		reftable_ref_record_release(&ref);
 	}
-	check_int(j, ==, want_names_len);
+	cl_assert_equal_i(j, want_names_len);
 
 	reftable_buf_release(&buf);
 	free_names(want_names);
@@ -616,21 +608,21 @@ static void t_table_refs_for(int indexed)
 	reftable_table_decref(table);
 }
 
-static void t_table_refs_for_no_index(void)
+void test_reftable_readwrite__table_refs_for_no_index(void)
 {
 	t_table_refs_for(0);
 }
 
-static void t_table_refs_for_obj_index(void)
+void test_reftable_readwrite__table_refs_for_obj_index(void)
 {
 	t_table_refs_for(1);
 }
 
-static void t_write_empty_table(void)
+void test_reftable_readwrite__write_empty_table(void)
 {
 	struct reftable_write_options opts = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf, &opts);
 	struct reftable_block_source source = { 0 };
 	struct reftable_table *table = NULL;
 	struct reftable_ref_record rec = { 0 };
@@ -639,43 +631,41 @@ static void t_write_empty_table(void)
 
 	reftable_writer_set_limits(w, 1, 1);
 
-	err = reftable_writer_close(w);
-	check_int(err, ==, REFTABLE_EMPTY_TABLE_ERROR);
+	cl_assert_equal_i(reftable_writer_close(w), REFTABLE_EMPTY_TABLE_ERROR);
 	reftable_writer_free(w);
 
-	check_uint(buf.len, ==, header_size(1) + footer_size(1));
+	cl_assert_equal_i(buf.len, header_size(1) + footer_size(1));
 
 	block_source_from_buf(&source, &buf);
 
 	err = reftable_table_new(&table, &source, "filename");
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_table_init_ref_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_ref(&it, "");
-	check(!err);
+	cl_assert(!err);
 
 	err = reftable_iterator_next_ref(&it, &rec);
-	check_int(err, >, 0);
+	cl_assert(err > 0);
 
 	reftable_iterator_destroy(&it);
 	reftable_table_decref(table);
 	reftable_buf_release(&buf);
 }
 
-static void t_write_object_id_min_length(void)
+void test_reftable_readwrite__write_object_id_min_length(void)
 {
 	struct reftable_write_options opts = {
 		.block_size = 75,
 	};
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf, &opts);
 	struct reftable_ref_record ref = {
 		.update_index = 1,
 		.value_type = REFTABLE_REF_VAL1,
 		.value.val1 = {42},
 	};
-	int err;
 	int i;
 
 	reftable_writer_set_limits(w, 1, 1);
@@ -686,30 +676,27 @@ static void t_write_object_id_min_length(void)
 		char name[256];
 		snprintf(name, sizeof(name), "ref%05d", i);
 		ref.refname = name;
-		err = reftable_writer_add_ref(w, &ref);
-		check(!err);
+		cl_assert_equal_i(reftable_writer_add_ref(w, &ref), 0);
 	}
 
-	err = reftable_writer_close(w);
-	check(!err);
-	check_int(reftable_writer_stats(w)->object_id_len, ==, 2);
+	cl_assert_equal_i(reftable_writer_close(w), 0);
+	cl_assert_equal_i(reftable_writer_stats(w)->object_id_len, 2);
 	reftable_writer_free(w);
 	reftable_buf_release(&buf);
 }
 
-static void t_write_object_id_length(void)
+void test_reftable_readwrite__write_object_id_length(void)
 {
 	struct reftable_write_options opts = {
 		.block_size = 75,
 	};
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf, &opts);
 	struct reftable_ref_record ref = {
 		.update_index = 1,
 		.value_type = REFTABLE_REF_VAL1,
 		.value.val1 = {42},
 	};
-	int err;
 	int i;
 
 	reftable_writer_set_limits(w, 1, 1);
@@ -721,44 +708,39 @@ static void t_write_object_id_length(void)
 		snprintf(name, sizeof(name), "ref%05d", i);
 		ref.refname = name;
 		ref.value.val1[15] = i;
-		err = reftable_writer_add_ref(w, &ref);
-		check(!err);
+		cl_assert(reftable_writer_add_ref(w, &ref) == 0);
 	}
 
-	err = reftable_writer_close(w);
-	check(!err);
-	check_int(reftable_writer_stats(w)->object_id_len, ==, 16);
+	cl_assert_equal_i(reftable_writer_close(w), 0);
+	cl_assert_equal_i(reftable_writer_stats(w)->object_id_len, 16);
 	reftable_writer_free(w);
 	reftable_buf_release(&buf);
 }
 
-static void t_write_empty_key(void)
+void test_reftable_readwrite__write_empty_key(void)
 {
 	struct reftable_write_options opts = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf, &opts);
 	struct reftable_ref_record ref = {
 		.refname = (char *) "",
 		.update_index = 1,
 		.value_type = REFTABLE_REF_DELETION,
 	};
-	int err;
 
 	reftable_writer_set_limits(w, 1, 1);
-	err = reftable_writer_add_ref(w, &ref);
-	check_int(err, ==, REFTABLE_API_ERROR);
-
-	err = reftable_writer_close(w);
-	check_int(err, ==, REFTABLE_EMPTY_TABLE_ERROR);
+	cl_assert_equal_i(reftable_writer_add_ref(w, &ref), REFTABLE_API_ERROR);
+	cl_assert_equal_i(reftable_writer_close(w),
+			  REFTABLE_EMPTY_TABLE_ERROR);
 	reftable_writer_free(w);
 	reftable_buf_release(&buf);
 }
 
-static void t_write_key_order(void)
+void test_reftable_readwrite__write_key_order(void)
 {
 	struct reftable_write_options opts = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
-	struct reftable_writer *w = t_reftable_strbuf_writer(&buf, &opts);
+	struct reftable_writer *w = cl_reftable_strbuf_writer(&buf, &opts);
 	struct reftable_ref_record refs[2] = {
 		{
 			.refname = (char *) "b",
@@ -776,24 +758,21 @@ static void t_write_key_order(void)
 			},
 		}
 	};
-	int err;
 
 	reftable_writer_set_limits(w, 1, 1);
-	err = reftable_writer_add_ref(w, &refs[0]);
-	check(!err);
-	err = reftable_writer_add_ref(w, &refs[1]);
-	check_int(err, ==, REFTABLE_API_ERROR);
+	cl_assert_equal_i(reftable_writer_add_ref(w, &refs[0]), 0);
+	cl_assert_equal_i(reftable_writer_add_ref(w, &refs[1]),
+			  REFTABLE_API_ERROR);
 
 	refs[0].update_index = 2;
-	err = reftable_writer_add_ref(w, &refs[0]);
-	check_int(err, ==, REFTABLE_API_ERROR);
+	cl_assert_equal_i(reftable_writer_add_ref(w, &refs[0]), REFTABLE_API_ERROR);
 
 	reftable_writer_close(w);
 	reftable_writer_free(w);
 	reftable_buf_release(&buf);
 }
 
-static void t_write_multiple_indices(void)
+void test_reftable_readwrite__write_multiple_indices(void)
 {
 	struct reftable_write_options opts = {
 		.block_size = 100,
@@ -805,9 +784,10 @@ static void t_write_multiple_indices(void)
 	struct reftable_writer *writer;
 	struct reftable_table *table;
 	char buf[128];
-	int err, i;
+	int i;
+	int err;
 
-	writer = t_reftable_strbuf_writer(&writer_buf, &opts);
+	writer = cl_reftable_strbuf_writer(&writer_buf, &opts);
 	reftable_writer_set_limits(writer, 1, 1);
 	for (i = 0; i < 100; i++) {
 		struct reftable_ref_record ref = {
@@ -819,8 +799,7 @@ static void t_write_multiple_indices(void)
 		snprintf(buf, sizeof(buf), "refs/heads/%04d", i);
 		ref.refname = buf;
 
-		err = reftable_writer_add_ref(writer, &ref);
-		check(!err);
+		cl_assert_equal_i(reftable_writer_add_ref(writer, &ref), 0);
 	}
 
 	for (i = 0; i < 100; i++) {
@@ -836,8 +815,7 @@ static void t_write_multiple_indices(void)
 		snprintf(buf, sizeof(buf), "refs/heads/%04d", i);
 		log.refname = buf;
 
-		err = reftable_writer_add_log(writer, &log);
-		check(!err);
+		cl_assert_equal_i(reftable_writer_add_log(writer, &log), 0);
 	}
 
 	reftable_writer_close(writer);
@@ -847,22 +825,22 @@ static void t_write_multiple_indices(void)
 	 * for each of the block types.
 	 */
 	stats = reftable_writer_stats(writer);
-	check_int(stats->ref_stats.index_offset, >, 0);
-	check_int(stats->obj_stats.index_offset, >, 0);
-	check_int(stats->log_stats.index_offset, >, 0);
+	cl_assert(stats->ref_stats.index_offset > 0);
+	cl_assert(stats->obj_stats.index_offset > 0);
+	cl_assert(stats->log_stats.index_offset > 0);
 
 	block_source_from_buf(&source, &writer_buf);
 	err = reftable_table_new(&table, &source, "filename");
-	check(!err);
+	cl_assert(!err);
 
 	/*
 	 * Seeking the log uses the log index now. In case there is any
 	 * confusion regarding indices we would notice here.
 	 */
 	err = reftable_table_init_log_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_log(&it, "");
-	check(!err);
+	cl_assert(!err);
 
 	reftable_iterator_destroy(&it);
 	reftable_writer_free(writer);
@@ -870,7 +848,7 @@ static void t_write_multiple_indices(void)
 	reftable_buf_release(&writer_buf);
 }
 
-static void t_write_multi_level_index(void)
+void test_reftable_readwrite__write_multi_level_index(void)
 {
 	struct reftable_write_options opts = {
 		.block_size = 100,
@@ -883,7 +861,7 @@ static void t_write_multi_level_index(void)
 	struct reftable_table *table;
 	int err;
 
-	writer = t_reftable_strbuf_writer(&writer_buf, &opts);
+	writer = cl_reftable_strbuf_writer(&writer_buf, &opts);
 	reftable_writer_set_limits(writer, 1, 1);
 	for (size_t i = 0; i < 200; i++) {
 		struct reftable_ref_record ref = {
@@ -896,8 +874,7 @@ static void t_write_multi_level_index(void)
 		snprintf(buf, sizeof(buf), "refs/heads/%03" PRIuMAX, (uintmax_t)i);
 		ref.refname = buf;
 
-		err = reftable_writer_add_ref(writer, &ref);
-		check(!err);
+		cl_assert_equal_i(reftable_writer_add_ref(writer, &ref), 0);
 	}
 	reftable_writer_close(writer);
 
@@ -906,19 +883,19 @@ static void t_write_multi_level_index(void)
 	 * multi-level index.
 	 */
 	stats = reftable_writer_stats(writer);
-	check_int(stats->ref_stats.max_index_level, ==, 2);
+	cl_assert_equal_i(stats->ref_stats.max_index_level, 2);
 
 	block_source_from_buf(&source, &writer_buf);
 	err = reftable_table_new(&table, &source, "filename");
-	check(!err);
+	cl_assert(!err);
 
 	/*
 	 * Seeking the last ref should work as expected.
 	 */
 	err = reftable_table_init_ref_iterator(table, &it);
-	check(!err);
+	cl_assert(!err);
 	err = reftable_iterator_seek_ref(&it, "refs/heads/199");
-	check(!err);
+	cl_assert(!err);
 
 	reftable_iterator_destroy(&it);
 	reftable_writer_free(writer);
@@ -927,7 +904,7 @@ static void t_write_multi_level_index(void)
 	reftable_buf_release(&buf);
 }
 
-static void t_corrupt_table_empty(void)
+void test_reftable_readwrite__corrupt_table_empty(void)
 {
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
 	struct reftable_block_source source = { 0 };
@@ -936,50 +913,22 @@ static void t_corrupt_table_empty(void)
 
 	block_source_from_buf(&source, &buf);
 	err = reftable_table_new(&table, &source, "file.log");
-	check_int(err, ==, REFTABLE_FORMAT_ERROR);
+	cl_assert_equal_i(err, REFTABLE_FORMAT_ERROR);
 }
 
-static void t_corrupt_table(void)
+void test_reftable_readwrite__corrupt_table(void)
 {
 	uint8_t zeros[1024] = { 0 };
 	struct reftable_buf buf = REFTABLE_BUF_INIT;
 	struct reftable_block_source source = { 0 };
 	struct reftable_table *table;
 	int err;
-	check(!reftable_buf_add(&buf, zeros, sizeof(zeros)));
+
+	cl_assert(!reftable_buf_add(&buf, zeros, sizeof(zeros)));
 
 	block_source_from_buf(&source, &buf);
 	err = reftable_table_new(&table, &source, "file.log");
-	check_int(err, ==, REFTABLE_FORMAT_ERROR);
+	cl_assert_equal_i(err, REFTABLE_FORMAT_ERROR);
 
 	reftable_buf_release(&buf);
 }
-
-int cmd_main(int argc UNUSED, const char *argv[] UNUSED)
-{
-	TEST(t_buffer(), "strbuf works as blocksource");
-	TEST(t_corrupt_table(), "read-write on corrupted table");
-	TEST(t_corrupt_table_empty(), "read-write on an empty table");
-	TEST(t_log_buffer_size(), "buffer extension for log compression");
-	TEST(t_log_overflow(), "log overflow returns expected error");
-	TEST(t_log_write_limits(), "writer limits for writing log records");
-	TEST(t_log_write_read(), "read-write on log records");
-	TEST(t_log_zlib_corruption(), "reading corrupted log record returns expected error");
-	TEST(t_table_read_api(), "read on a table");
-	TEST(t_table_read_write_seek_index(), "read-write on a table with index");
-	TEST(t_table_read_write_seek_linear(), "read-write on a table without index (SHA1)");
-	TEST(t_table_read_write_seek_linear_sha256(), "read-write on a table without index (SHA256)");
-	TEST(t_table_read_write_sequential(), "sequential read-write on a table");
-	TEST(t_table_refs_for_no_index(), "refs-only table with no index");
-	TEST(t_table_refs_for_obj_index(), "refs-only table with index");
-	TEST(t_table_write_small_table(), "write_table works");
-	TEST(t_write_empty_key(), "write on refs with empty keys");
-	TEST(t_write_empty_table(), "read-write on empty tables");
-	TEST(t_write_key_order(), "refs must be written in increasing order");
-	TEST(t_write_multi_level_index(), "table with multi-level index");
-	TEST(t_write_multiple_indices(), "table with indices for multiple block types");
-	TEST(t_write_object_id_length(), "prefix compression on writing refs");
-	TEST(t_write_object_id_min_length(), "prefix compression on writing refs");
-
-	return test_done();
-}