1 files changed, 458 insertions, 0 deletions
diff --git a/t/unit-tests/u-reftable-block.c b/t/unit-tests/u-reftable-block.c
new file mode 100644
index 0000000000..f4bded7d26
--- /dev/null
+++ b/t/unit-tests/u-reftable-block.c
@@ -0,0 +1,458 @@
+/*
+Copyright 2020 Google LLC
+
+Use of this source code is governed by a BSD-style
+license that can be found in the LICENSE file or at
+https://developers.google.com/open-source/licenses/bsd
+*/
+
+#include "unit-test.h"
+#include "lib-reftable.h"
+#include "reftable/block.h"
+#include "reftable/blocksource.h"
+#include "reftable/constants.h"
+#include "reftable/reftable-error.h"
+#include "strbuf.h"
+
+void test_reftable_block__read_write(void)
+{
+	const int header_off = 21; /* random */
+	struct reftable_record recs[30];
+	const size_t N = ARRAY_SIZE(recs);
+	const size_t block_size = 1024;
+	struct reftable_block_source source = { 0 };
+	struct block_writer bw = {
+		.last_key = REFTABLE_BUF_INIT,
+	};
+	struct reftable_record rec = {
+		.type = REFTABLE_BLOCK_TYPE_REF,
+	};
+	size_t i = 0;
+	int ret;
+	struct reftable_block block = { 0 };
+	struct block_iter it = BLOCK_ITER_INIT;
+	struct reftable_buf want = REFTABLE_BUF_INIT;
+	struct reftable_buf block_data = REFTABLE_BUF_INIT;
+
+	REFTABLE_CALLOC_ARRAY(block_data.buf, block_size);
+	cl_assert(block_data.buf != NULL);
+	block_data.len = block_size;
+
+	ret = block_writer_init(&bw, REFTABLE_BLOCK_TYPE_REF,
+				(uint8_t *) block_data.buf, block_size,
+				header_off, hash_size(REFTABLE_HASH_SHA1));
+	cl_assert(!ret);
+
+	rec.u.ref.refname = (char *) "";
+	rec.u.ref.value_type = REFTABLE_REF_DELETION;
+	ret = block_writer_add(&bw, &rec);
+	cl_assert_equal_i(ret, REFTABLE_API_ERROR);
+
+	for (i = 0; i < N; i++) {
+		rec.u.ref.refname = xstrfmt("branch%02"PRIuMAX, (uintmax_t)i);
+		rec.u.ref.value_type = REFTABLE_REF_VAL1;
+		memset(rec.u.ref.value.val1, i, REFTABLE_HASH_SIZE_SHA1);
+
+		recs[i] = rec;
+		ret = block_writer_add(&bw, &rec);
+		rec.u.ref.refname = NULL;
+		rec.u.ref.value_type = REFTABLE_REF_DELETION;
+		cl_assert_equal_i(ret, 0);
+	}
+
+	ret = block_writer_finish(&bw);
+	cl_assert(ret > 0);
+
+	block_writer_release(&bw);
+
+	block_source_from_buf(&source ,&block_data);
+	reftable_block_init(&block, &source, 0, header_off, block_size,
+			    REFTABLE_HASH_SIZE_SHA1, REFTABLE_BLOCK_TYPE_REF);
+
+	block_iter_init(&it, &block);
+
+	for (i = 0; ; i++) {
+		ret = block_iter_next(&it, &rec);
+		cl_assert(ret >= 0);
+		if (ret > 0) {
+			cl_assert_equal_i(i, N);
+			break;
+		}
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	for (i = 0; i < N; i++) {
+		reftable_record_key(&recs[i], &want);
+
+		ret = block_iter_seek_key(&it, &want);
+		cl_assert_equal_i(ret, 0);
+
+		ret = block_iter_next(&it, &rec);
+		cl_assert_equal_i(ret, 0);
+
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+
+		want.len--;
+		ret = block_iter_seek_key(&it, &want);
+		cl_assert_equal_i(ret, 0);
+
+		ret = block_iter_next(&it, &rec);
+		cl_assert_equal_i(ret, 0);
+		cl_assert_equal_i(reftable_record_equal(&recs[10 * (i / 10)], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	reftable_block_release(&block);
+	block_iter_close(&it);
+	reftable_record_release(&rec);
+	reftable_buf_release(&want);
+	reftable_buf_release(&block_data);
+	for (i = 0; i < N; i++)
+		reftable_record_release(&recs[i]);
+}
+
+void test_reftable_block__log_read_write(void)
+{
+	const int header_off = 21;
+	struct reftable_record recs[30];
+	const size_t N = ARRAY_SIZE(recs);
+	const size_t block_size = 2048;
+	struct reftable_block_source source = { 0 };
+	struct block_writer bw = {
+		.last_key = REFTABLE_BUF_INIT,
+	};
+	struct reftable_record rec = {
+		.type = REFTABLE_BLOCK_TYPE_LOG,
+	};
+	size_t i = 0;
+	int ret;
+	struct reftable_block block = { 0 };
+	struct block_iter it = BLOCK_ITER_INIT;
+	struct reftable_buf want = REFTABLE_BUF_INIT;
+	struct reftable_buf block_data = REFTABLE_BUF_INIT;
+
+	REFTABLE_CALLOC_ARRAY(block_data.buf, block_size);
+	cl_assert(block_data.buf != NULL);
+	block_data.len = block_size;
+
+	ret = block_writer_init(&bw, REFTABLE_BLOCK_TYPE_LOG, (uint8_t *) block_data.buf, block_size,
+				header_off, hash_size(REFTABLE_HASH_SHA1));
+	cl_assert(!ret);
+
+	for (i = 0; i < N; i++) {
+		rec.u.log.refname = xstrfmt("branch%02"PRIuMAX , (uintmax_t)i);
+		rec.u.log.update_index = i;
+		rec.u.log.value_type = REFTABLE_LOG_UPDATE;
+
+		recs[i] = rec;
+		ret = block_writer_add(&bw, &rec);
+		rec.u.log.refname = NULL;
+		rec.u.log.value_type = REFTABLE_LOG_DELETION;
+		cl_assert_equal_i(ret, 0);
+	}
+
+	ret = block_writer_finish(&bw);
+	cl_assert(ret > 0);
+
+	block_writer_release(&bw);
+
+	block_source_from_buf(&source, &block_data);
+	reftable_block_init(&block, &source, 0, header_off, block_size,
+			    REFTABLE_HASH_SIZE_SHA1, REFTABLE_BLOCK_TYPE_LOG);
+
+	block_iter_init(&it, &block);
+
+	for (i = 0; ; i++) {
+		ret = block_iter_next(&it, &rec);
+		cl_assert(ret >= 0);
+		if (ret > 0) {
+			cl_assert_equal_i(i, N);
+			break;
+		}
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	for (i = 0; i < N; i++) {
+		reftable_buf_reset(&want);
+		cl_assert(reftable_buf_addstr(&want, recs[i].u.log.refname) == 0);
+
+		ret = block_iter_seek_key(&it, &want);
+		cl_assert_equal_i(ret, 0);
+
+		ret = block_iter_next(&it, &rec);
+		cl_assert_equal_i(ret, 0);
+
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+
+		want.len--;
+		ret = block_iter_seek_key(&it, &want);
+		cl_assert_equal_i(ret, 0);
+
+		ret = block_iter_next(&it, &rec);
+		cl_assert_equal_i(ret, 0);
+		cl_assert_equal_i(reftable_record_equal(&recs[10 * (i / 10)], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	reftable_block_release(&block);
+	block_iter_close(&it);
+	reftable_record_release(&rec);
+	reftable_buf_release(&want);
+	reftable_buf_release(&block_data);
+	for (i = 0; i < N; i++)
+		reftable_record_release(&recs[i]);
+}
+
+void test_reftable_block__obj_read_write(void)
+{
+	const int header_off = 21;
+	struct reftable_record recs[30];
+	const size_t N = ARRAY_SIZE(recs);
+	const size_t block_size = 1024;
+	struct reftable_block_source source = { 0 };
+	struct block_writer bw = {
+		.last_key = REFTABLE_BUF_INIT,
+	};
+	struct reftable_record rec = {
+		.type = REFTABLE_BLOCK_TYPE_OBJ,
+	};
+	size_t i = 0;
+	int ret;
+	struct reftable_block block = { 0 };
+	struct block_iter it = BLOCK_ITER_INIT;
+	struct reftable_buf want = REFTABLE_BUF_INIT;
+	struct reftable_buf block_data = REFTABLE_BUF_INIT;
+
+	REFTABLE_CALLOC_ARRAY(block_data.buf, block_size);
+	cl_assert(block_data.buf != NULL);
+	block_data.len = block_size;
+
+	ret = block_writer_init(&bw, REFTABLE_BLOCK_TYPE_OBJ, (uint8_t *) block_data.buf, block_size,
+				header_off, hash_size(REFTABLE_HASH_SHA1));
+	cl_assert(!ret);
+
+	for (i = 0; i < N; i++) {
+		uint8_t bytes[] = { i, i + 1, i + 2, i + 3, i + 5 }, *allocated;
+		DUP_ARRAY(allocated, bytes, ARRAY_SIZE(bytes));
+
+		rec.u.obj.hash_prefix = allocated;
+		rec.u.obj.hash_prefix_len = 5;
+
+		recs[i] = rec;
+		ret = block_writer_add(&bw, &rec);
+		rec.u.obj.hash_prefix = NULL;
+		rec.u.obj.hash_prefix_len = 0;
+		cl_assert_equal_i(ret, 0);
+	}
+
+	ret = block_writer_finish(&bw);
+	cl_assert(ret > 0);
+
+	block_writer_release(&bw);
+
+	block_source_from_buf(&source, &block_data);
+	reftable_block_init(&block, &source, 0, header_off, block_size,
+			    REFTABLE_HASH_SIZE_SHA1, REFTABLE_BLOCK_TYPE_OBJ);
+
+	block_iter_init(&it, &block);
+
+	for (i = 0; ; i++) {
+		ret = block_iter_next(&it, &rec);
+		cl_assert(ret >= 0);
+		if (ret > 0) {
+			cl_assert_equal_i(i, N);
+			break;
+		}
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	for (i = 0; i < N; i++) {
+		reftable_record_key(&recs[i], &want);
+
+		ret = block_iter_seek_key(&it, &want);
+		cl_assert_equal_i(ret, 0);
+
+		ret = block_iter_next(&it, &rec);
+		cl_assert_equal_i(ret, 0);
+
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	reftable_block_release(&block);
+	block_iter_close(&it);
+	reftable_record_release(&rec);
+	reftable_buf_release(&want);
+	reftable_buf_release(&block_data);
+	for (i = 0; i < N; i++)
+		reftable_record_release(&recs[i]);
+}
+
+void test_reftable_block__ref_read_write(void)
+{
+	const int header_off = 21;
+	struct reftable_record recs[30];
+	const size_t N = ARRAY_SIZE(recs);
+	const size_t block_size = 1024;
+	struct reftable_block_source source = { 0 };
+	struct block_writer bw = {
+		.last_key = REFTABLE_BUF_INIT,
+	};
+	struct reftable_record rec = {
+		.type = REFTABLE_BLOCK_TYPE_INDEX,
+		.u.idx.last_key = REFTABLE_BUF_INIT,
+	};
+	size_t i = 0;
+	int ret;
+	struct reftable_block block = { 0 };
+	struct block_iter it = BLOCK_ITER_INIT;
+	struct reftable_buf want = REFTABLE_BUF_INIT;
+	struct reftable_buf block_data = REFTABLE_BUF_INIT;
+
+	REFTABLE_CALLOC_ARRAY(block_data.buf, block_size);
+	cl_assert(block_data.buf != NULL);
+	block_data.len = block_size;
+
+	ret = block_writer_init(&bw, REFTABLE_BLOCK_TYPE_INDEX, (uint8_t *) block_data.buf, block_size,
+				header_off, hash_size(REFTABLE_HASH_SHA1));
+	cl_assert(!ret);
+
+	for (i = 0; i < N; i++) {
+		char buf[128];
+
+		snprintf(buf, sizeof(buf), "branch%02"PRIuMAX, (uintmax_t)i);
+
+		reftable_buf_init(&recs[i].u.idx.last_key);
+		recs[i].type = REFTABLE_BLOCK_TYPE_INDEX;
+		cl_assert(!reftable_buf_addstr(&recs[i].u.idx.last_key, buf));
+		recs[i].u.idx.offset = i;
+
+		ret = block_writer_add(&bw, &recs[i]);
+		cl_assert_equal_i(ret, 0);
+	}
+
+	ret = block_writer_finish(&bw);
+	cl_assert(ret > 0);
+
+	block_writer_release(&bw);
+
+	block_source_from_buf(&source, &block_data);
+	reftable_block_init(&block, &source, 0, header_off, block_size,
+			    REFTABLE_HASH_SIZE_SHA1, REFTABLE_BLOCK_TYPE_INDEX);
+
+	block_iter_init(&it, &block);
+
+	for (i = 0; ; i++) {
+		ret = block_iter_next(&it, &rec);
+		cl_assert(ret >= 0);
+		if (ret > 0) {
+			cl_assert_equal_i(i, N);
+			break;
+		}
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	for (i = 0; i < N; i++) {
+		reftable_record_key(&recs[i], &want);
+
+		ret = block_iter_seek_key(&it, &want);
+		cl_assert_equal_i(ret, 0);
+
+		ret = block_iter_next(&it, &rec);
+		cl_assert_equal_i(ret, 0);
+
+		cl_assert_equal_i(reftable_record_equal(&recs[i], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+
+		want.len--;
+		ret = block_iter_seek_key(&it, &want);
+		cl_assert_equal_i(ret, 0);
+
+		ret = block_iter_next(&it, &rec);
+		cl_assert_equal_i(ret, 0);
+		cl_assert_equal_i(reftable_record_equal(&recs[10 * (i / 10)], &rec, REFTABLE_HASH_SIZE_SHA1), 1);
+	}
+
+	reftable_block_release(&block);
+	block_iter_close(&it);
+	reftable_record_release(&rec);
+	reftable_buf_release(&want);
+	reftable_buf_release(&block_data);
+	for (i = 0; i < N; i++)
+		reftable_record_release(&recs[i]);
+}
+
+void test_reftable_block__iterator(void)
+{
+	struct reftable_block_source source = { 0 };
+	struct block_writer writer = {
+		.last_key = REFTABLE_BUF_INIT,
+	};
+	struct reftable_record expected_refs[20];
+	struct reftable_ref_record ref = { 0 };
+	struct reftable_iterator it = { 0 };
+	struct reftable_block block = { 0 };
+	struct reftable_buf data;
+	int err;
+
+	data.len = 1024;
+	REFTABLE_CALLOC_ARRAY(data.buf, data.len);
+	cl_assert(data.buf != NULL);
+
+	err = block_writer_init(&writer, REFTABLE_BLOCK_TYPE_REF,
+				(uint8_t *) data.buf, data.len,
+				0, hash_size(REFTABLE_HASH_SHA1));
+	cl_assert(!err);
+
+	for (size_t i = 0; i < ARRAY_SIZE(expected_refs); i++) {
+		expected_refs[i] = (struct reftable_record) {
+			.type = REFTABLE_BLOCK_TYPE_REF,
+			.u.ref = {
+				.value_type = REFTABLE_REF_VAL1,
+				.refname = xstrfmt("refs/heads/branch-%02"PRIuMAX, (uintmax_t)i),
+			},
+		};
+		memset(expected_refs[i].u.ref.value.val1, i, REFTABLE_HASH_SIZE_SHA1);
+
+		err = block_writer_add(&writer, &expected_refs[i]);
+		cl_assert_equal_i(err, 0);
+	}
+
+	err = block_writer_finish(&writer);
+	cl_assert(err > 0);
+
+	block_source_from_buf(&source, &data);
+	reftable_block_init(&block, &source, 0, 0, data.len,
+			    REFTABLE_HASH_SIZE_SHA1, REFTABLE_BLOCK_TYPE_REF);
+
+	err = reftable_block_init_iterator(&block, &it);
+	cl_assert_equal_i(err, 0);
+
+	for (size_t i = 0; ; i++) {
+		err = reftable_iterator_next_ref(&it, &ref);
+		if (err > 0) {
+			cl_assert_equal_i(i, ARRAY_SIZE(expected_refs));
+			break;
+		}
+		cl_assert_equal_i(err, 0);
+
+		cl_assert(reftable_ref_record_equal(&ref,
+						    &expected_refs[i].u.ref, REFTABLE_HASH_SIZE_SHA1));
+	}
+
+	err = reftable_iterator_seek_ref(&it, "refs/heads/does-not-exist");
+	cl_assert_equal_i(err, 0);
+	err = reftable_iterator_next_ref(&it, &ref);
+	cl_assert_equal_i(err, 1);
+
+	err = reftable_iterator_seek_ref(&it, "refs/heads/branch-13");
+	cl_assert_equal_i(err, 0);
+	err = reftable_iterator_next_ref(&it, &ref);
+	cl_assert_equal_i(err, 0);
+	cl_assert(reftable_ref_record_equal(&ref,
+					    &expected_refs[13].u.ref,REFTABLE_HASH_SIZE_SHA1));
+
+	for (size_t i = 0; i < ARRAY_SIZE(expected_refs); i++)
+		reftable_free(expected_refs[i].u.ref.refname);
+	reftable_ref_record_release(&ref);
+	reftable_iterator_destroy(&it);
+	reftable_block_release(&block);
+	block_writer_release(&writer);
+	reftable_buf_release(&data);
+}