1 files changed, 120 insertions, 0 deletions
diff --git a/t/unit-tests/t-reftable-block.c b/t/unit-tests/t-reftable-block.c
new file mode 100644
index 0000000000..f2b9a8a6f4
--- /dev/null
+++ b/t/unit-tests/t-reftable-block.c
@@ -0,0 +1,120 @@
+/*
+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 "test-lib.h"
+#include "reftable/block.h"
+#include "reftable/blocksource.h"
+#include "reftable/constants.h"
+#include "reftable/reftable-error.h"
+
+static void t_block_read_write(void)
+{
+	const int header_off = 21; /* random */
+	char *names[30];
+	const int N = ARRAY_SIZE(names);
+	const int block_size = 1024;
+	struct reftable_block block = { NULL };
+	struct block_writer bw = {
+		.last_key = STRBUF_INIT,
+	};
+	struct reftable_record rec = {
+		.type = BLOCK_TYPE_REF,
+	};
+	int i = 0;
+	int n;
+	struct block_reader br = { 0 };
+	struct block_iter it = BLOCK_ITER_INIT;
+	int j = 0;
+	struct strbuf want = STRBUF_INIT;
+
+	REFTABLE_CALLOC_ARRAY(block.data, block_size);
+	block.len = block_size;
+	block.source = malloc_block_source();
+	block_writer_init(&bw, BLOCK_TYPE_REF, block.data, block_size,
+			  header_off, hash_size(GIT_SHA1_FORMAT_ID));
+
+	rec.u.ref.refname = (char *) "";
+	rec.u.ref.value_type = REFTABLE_REF_DELETION;
+	n = block_writer_add(&bw, &rec);
+	check_int(n, ==, REFTABLE_API_ERROR);
+
+	for (i = 0; i < N; i++) {
+		char name[100];
+		snprintf(name, sizeof(name), "branch%02d", i);
+
+		rec.u.ref.refname = name;
+		rec.u.ref.value_type = REFTABLE_REF_VAL1;
+		memset(rec.u.ref.value.val1, i, GIT_SHA1_RAWSZ);
+
+		names[i] = xstrdup(name);
+		n = block_writer_add(&bw, &rec);
+		rec.u.ref.refname = NULL;
+		rec.u.ref.value_type = REFTABLE_REF_DELETION;
+		check_int(n, ==, 0);
+	}
+
+	n = block_writer_finish(&bw);
+	check_int(n, >, 0);
+
+	block_writer_release(&bw);
+
+	block_reader_init(&br, &block, header_off, block_size, GIT_SHA1_RAWSZ);
+
+	block_iter_seek_start(&it, &br);
+
+	while (1) {
+		int r = block_iter_next(&it, &rec);
+		check_int(r, >=, 0);
+		if (r > 0) {
+			break;
+		}
+		check_str(names[j], rec.u.ref.refname);
+		j++;
+	}
+
+	reftable_record_release(&rec);
+	block_iter_close(&it);
+
+	for (i = 0; i < N; i++) {
+		struct block_iter it = BLOCK_ITER_INIT;
+		strbuf_reset(&want);
+		strbuf_addstr(&want, names[i]);
+
+		n = block_iter_seek_key(&it, &br, &want);
+		check_int(n, ==, 0);
+
+		n = block_iter_next(&it, &rec);
+		check_int(n, ==, 0);
+
+		check_str(names[i], rec.u.ref.refname);
+
+		want.len--;
+		n = block_iter_seek_key(&it, &br, &want);
+		check_int(n, ==, 0);
+
+		n = block_iter_next(&it, &rec);
+		check_int(n, ==, 0);
+		check_str(names[10 * (i / 10)], rec.u.ref.refname);
+
+		block_iter_close(&it);
+	}
+
+	reftable_record_release(&rec);
+	reftable_block_done(&br.block);
+	strbuf_release(&want);
+	for (i = 0; i < N; i++) {
+		reftable_free(names[i]);
+	}
+}
+
+int cmd_main(int argc, const char *argv[])
+{
+	TEST(t_block_read_write(), "read-write operations on blocks work");
+
+	return test_done();
+}