@@ -2469,6 +2469,7 @@ REFTABLE_OBJS += reftable/writer.o
REFTABLE_TEST_OBJS += reftable/basics_test.o
REFTABLE_TEST_OBJS += reftable/block_test.o
REFTABLE_TEST_OBJS += reftable/record_test.o
+REFTABLE_TEST_OBJS += reftable/readwrite_test.o
REFTABLE_TEST_OBJS += reftable/test_framework.o
REFTABLE_TEST_OBJS += reftable/tree_test.o
new file mode 100644
@@ -0,0 +1,652 @@
+/*
+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 "system.h"
+
+#include "basics.h"
+#include "block.h"
+#include "blocksource.h"
+#include "constants.h"
+#include "reader.h"
+#include "record.h"
+#include "test_framework.h"
+#include "reftable-tests.h"
+#include "reftable-writer.h"
+
+static const int update_index = 5;
+
+static void test_buffer(void)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_block_source source = { NULL };
+ struct reftable_block out = { NULL };
+ int n;
+ uint8_t in[] = "hello";
+ strbuf_add(&buf, in, sizeof(in));
+ block_source_from_strbuf(&source, &buf);
+ EXPECT(block_source_size(&source) == 6);
+ n = block_source_read_block(&source, &out, 0, sizeof(in));
+ EXPECT(n == sizeof(in));
+ EXPECT(!memcmp(in, out.data, n));
+ reftable_block_done(&out);
+
+ n = block_source_read_block(&source, &out, 1, 2);
+ EXPECT(n == 2);
+ EXPECT(!memcmp(out.data, "el", 2));
+
+ reftable_block_done(&out);
+ block_source_close(&source);
+ strbuf_release(&buf);
+}
+
+static void write_table(char ***names, struct strbuf *buf, int N,
+ int block_size, uint32_t hash_id)
+{
+ struct reftable_write_options opts = {
+ .block_size = block_size,
+ .hash_id = hash_id,
+ };
+ struct reftable_writer *w =
+ reftable_new_writer(&strbuf_add_void, buf, &opts);
+ struct reftable_ref_record ref = { NULL };
+ int i = 0, n;
+ struct reftable_log_record log = { NULL };
+ const struct reftable_stats *stats = NULL;
+ *names = reftable_calloc(sizeof(char *) * (N + 1));
+ reftable_writer_set_limits(w, update_index, update_index);
+ for (i = 0; i < N; i++) {
+ uint8_t hash[GIT_SHA256_RAWSZ] = { 0 };
+ char name[100];
+ int n;
+
+ set_test_hash(hash, i);
+
+ snprintf(name, sizeof(name), "refs/heads/branch%02d", i);
+
+ ref.refname = name;
+ ref.update_index = update_index;
+ ref.value_type = REFTABLE_REF_VAL1;
+ ref.value.val1 = hash;
+ (*names)[i] = xstrdup(name);
+
+ n = reftable_writer_add_ref(w, &ref);
+ EXPECT(n == 0);
+ }
+
+ for (i = 0; i < N; i++) {
+ uint8_t hash[GIT_SHA256_RAWSZ] = { 0 };
+ char name[100];
+ int n;
+
+ set_test_hash(hash, i);
+
+ snprintf(name, sizeof(name), "refs/heads/branch%02d", i);
+
+ log.refname = name;
+ log.update_index = update_index;
+ log.value_type = REFTABLE_LOG_UPDATE;
+ log.value.update.new_hash = hash;
+ log.value.update.message = "message";
+
+ n = reftable_writer_add_log(w, &log);
+ EXPECT(n == 0);
+ }
+
+ n = reftable_writer_close(w);
+ EXPECT(n == 0);
+
+ stats = writer_stats(w);
+ for (i = 0; i < stats->ref_stats.blocks; i++) {
+ int off = i * opts.block_size;
+ if (off == 0) {
+ off = header_size(
+ (hash_id == GIT_SHA256_FORMAT_ID) ? 2 : 1);
+ }
+ EXPECT(buf->buf[off] == 'r');
+ }
+
+ EXPECT(stats->log_stats.blocks > 0);
+ reftable_writer_free(w);
+}
+
+static void test_log_buffer_size(void)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_write_options opts = {
+ .block_size = 4096,
+ };
+ int err;
+ int i;
+ struct reftable_log_record
+ log = { .refname = "refs/heads/master",
+ .update_index = 0xa,
+ .value_type = REFTABLE_LOG_UPDATE,
+ .value = { .update = {
+ .name = "Han-Wen Nienhuys",
+ .email = "hanwen@google.com",
+ .tz_offset = 100,
+ .time = 0x5e430672,
+ .message = "commit: 9\n",
+ } } };
+ struct reftable_writer *w =
+ reftable_new_writer(&strbuf_add_void, &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.
+ */
+ uint8_t hash1[GIT_SHA1_RAWSZ], hash2[GIT_SHA1_RAWSZ];
+ for (i = 0; i < GIT_SHA1_RAWSZ; i++) {
+ hash1[i] = (uint8_t)(rand() % 256);
+ hash2[i] = (uint8_t)(rand() % 256);
+ }
+ log.value.update.old_hash = hash1;
+ log.value.update.new_hash = hash2;
+ reftable_writer_set_limits(w, update_index, update_index);
+ err = reftable_writer_add_log(w, &log);
+ EXPECT_ERR(err);
+ err = reftable_writer_close(w);
+ EXPECT_ERR(err);
+ reftable_writer_free(w);
+ strbuf_release(&buf);
+}
+
+static void test_log_write_read(void)
+{
+ int N = 2;
+ char **names = reftable_calloc(sizeof(char *) * (N + 1));
+ int err;
+ struct reftable_write_options opts = {
+ .block_size = 256,
+ };
+ struct reftable_ref_record ref = { NULL };
+ int i = 0;
+ struct reftable_log_record log = { NULL };
+ int n;
+ struct reftable_iterator it = { NULL };
+ struct reftable_reader rd = { NULL };
+ struct reftable_block_source source = { NULL };
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_writer *w =
+ reftable_new_writer(&strbuf_add_void, &buf, &opts);
+ const struct reftable_stats *stats = NULL;
+ reftable_writer_set_limits(w, 0, N);
+ for (i = 0; i < N; i++) {
+ char name[256];
+ struct reftable_ref_record ref = { NULL };
+ snprintf(name, sizeof(name), "b%02d%0*d", i, 130, 7);
+ names[i] = xstrdup(name);
+ ref.refname = name;
+ ref.update_index = i;
+
+ err = reftable_writer_add_ref(w, &ref);
+ EXPECT_ERR(err);
+ }
+ for (i = 0; i < N; i++) {
+ uint8_t hash1[GIT_SHA1_RAWSZ], hash2[GIT_SHA1_RAWSZ];
+ struct reftable_log_record log = { NULL };
+ set_test_hash(hash1, i);
+ set_test_hash(hash2, i + 1);
+
+ log.refname = names[i];
+ log.update_index = i;
+ log.value_type = REFTABLE_LOG_UPDATE;
+ log.value.update.old_hash = hash1;
+ log.value.update.new_hash = hash2;
+
+ err = reftable_writer_add_log(w, &log);
+ EXPECT_ERR(err);
+ }
+
+ n = reftable_writer_close(w);
+ EXPECT(n == 0);
+
+ stats = writer_stats(w);
+ EXPECT(stats->log_stats.blocks > 0);
+ reftable_writer_free(w);
+ w = NULL;
+
+ block_source_from_strbuf(&source, &buf);
+
+ err = init_reader(&rd, &source, "file.log");
+ EXPECT_ERR(err);
+
+ err = reftable_reader_seek_ref(&rd, &it, names[N - 1]);
+ EXPECT_ERR(err);
+
+ err = reftable_iterator_next_ref(&it, &ref);
+ EXPECT_ERR(err);
+
+ /* end of iteration. */
+ err = reftable_iterator_next_ref(&it, &ref);
+ EXPECT(0 < err);
+
+ reftable_iterator_destroy(&it);
+ reftable_ref_record_release(&ref);
+
+ err = reftable_reader_seek_log(&rd, &it, "");
+ EXPECT_ERR(err);
+
+ i = 0;
+ while (1) {
+ int err = reftable_iterator_next_log(&it, &log);
+ if (err > 0) {
+ break;
+ }
+
+ EXPECT_ERR(err);
+ EXPECT_STREQ(names[i], log.refname);
+ EXPECT(i == log.update_index);
+ i++;
+ reftable_log_record_release(&log);
+ }
+
+ EXPECT(i == N);
+ reftable_iterator_destroy(&it);
+
+ /* cleanup. */
+ strbuf_release(&buf);
+ free_names(names);
+ reader_close(&rd);
+}
+
+static void test_table_read_write_sequential(void)
+{
+ char **names;
+ struct strbuf buf = STRBUF_INIT;
+ int N = 50;
+ struct reftable_iterator it = { NULL };
+ struct reftable_block_source source = { NULL };
+ struct reftable_reader rd = { NULL };
+ int err = 0;
+ int j = 0;
+
+ write_table(&names, &buf, N, 256, GIT_SHA1_FORMAT_ID);
+
+ block_source_from_strbuf(&source, &buf);
+
+ err = init_reader(&rd, &source, "file.ref");
+ EXPECT_ERR(err);
+
+ err = reftable_reader_seek_ref(&rd, &it, "");
+ EXPECT_ERR(err);
+
+ while (1) {
+ struct reftable_ref_record ref = { NULL };
+ int r = reftable_iterator_next_ref(&it, &ref);
+ EXPECT(r >= 0);
+ if (r > 0) {
+ break;
+ }
+ EXPECT(0 == strcmp(names[j], ref.refname));
+ EXPECT(update_index == ref.update_index);
+
+ j++;
+ reftable_ref_record_release(&ref);
+ }
+ EXPECT(j == N);
+ reftable_iterator_destroy(&it);
+ strbuf_release(&buf);
+ free_names(names);
+
+ reader_close(&rd);
+}
+
+static void test_table_write_small_table(void)
+{
+ char **names;
+ struct strbuf buf = STRBUF_INIT;
+ int N = 1;
+ write_table(&names, &buf, N, 4096, GIT_SHA1_FORMAT_ID);
+ EXPECT(buf.len < 200);
+ strbuf_release(&buf);
+ free_names(names);
+}
+
+static void test_table_read_api(void)
+{
+ char **names;
+ struct strbuf buf = STRBUF_INIT;
+ int N = 50;
+ struct reftable_reader rd = { NULL };
+ struct reftable_block_source source = { NULL };
+ int err;
+ int i;
+ struct reftable_log_record log = { NULL };
+ struct reftable_iterator it = { NULL };
+
+ write_table(&names, &buf, N, 256, GIT_SHA1_FORMAT_ID);
+
+ block_source_from_strbuf(&source, &buf);
+
+ err = init_reader(&rd, &source, "file.ref");
+ EXPECT_ERR(err);
+
+ err = reftable_reader_seek_ref(&rd, &it, names[0]);
+ EXPECT_ERR(err);
+
+ err = reftable_iterator_next_log(&it, &log);
+ EXPECT(err == REFTABLE_API_ERROR);
+
+ strbuf_release(&buf);
+ for (i = 0; i < N; i++) {
+ reftable_free(names[i]);
+ }
+ reftable_iterator_destroy(&it);
+ reftable_free(names);
+ reader_close(&rd);
+ strbuf_release(&buf);
+}
+
+static void test_table_read_write_seek(int index, int hash_id)
+{
+ char **names;
+ struct strbuf buf = STRBUF_INIT;
+ int N = 50;
+ struct reftable_reader rd = { NULL };
+ struct reftable_block_source source = { NULL };
+ int err;
+ int i = 0;
+
+ struct reftable_iterator it = { NULL };
+ struct strbuf pastLast = STRBUF_INIT;
+ struct reftable_ref_record ref = { NULL };
+
+ write_table(&names, &buf, N, 256, hash_id);
+
+ block_source_from_strbuf(&source, &buf);
+
+ err = init_reader(&rd, &source, "file.ref");
+ EXPECT_ERR(err);
+ EXPECT(hash_id == reftable_reader_hash_id(&rd));
+
+ if (!index) {
+ rd.ref_offsets.index_offset = 0;
+ } else {
+ EXPECT(rd.ref_offsets.index_offset > 0);
+ }
+
+ for (i = 1; i < N; i++) {
+ int err = reftable_reader_seek_ref(&rd, &it, names[i]);
+ EXPECT_ERR(err);
+ err = reftable_iterator_next_ref(&it, &ref);
+ EXPECT_ERR(err);
+ EXPECT(0 == strcmp(names[i], ref.refname));
+ EXPECT(REFTABLE_REF_VAL1 == ref.value_type);
+ EXPECT(i == ref.value.val1[0]);
+
+ reftable_ref_record_release(&ref);
+ reftable_iterator_destroy(&it);
+ }
+
+ strbuf_addstr(&pastLast, names[N - 1]);
+ strbuf_addstr(&pastLast, "/");
+
+ err = reftable_reader_seek_ref(&rd, &it, pastLast.buf);
+ if (err == 0) {
+ struct reftable_ref_record ref = { NULL };
+ int err = reftable_iterator_next_ref(&it, &ref);
+ EXPECT(err > 0);
+ } else {
+ EXPECT(err > 0);
+ }
+
+ strbuf_release(&pastLast);
+ reftable_iterator_destroy(&it);
+
+ strbuf_release(&buf);
+ for (i = 0; i < N; i++) {
+ reftable_free(names[i]);
+ }
+ reftable_free(names);
+ reader_close(&rd);
+}
+
+static void test_table_read_write_seek_linear(void)
+{
+ test_table_read_write_seek(0, GIT_SHA1_FORMAT_ID);
+}
+
+static void test_table_read_write_seek_linear_sha256(void)
+{
+ test_table_read_write_seek(0, GIT_SHA256_FORMAT_ID);
+}
+
+static void test_table_read_write_seek_index(void)
+{
+ test_table_read_write_seek(1, GIT_SHA1_FORMAT_ID);
+}
+
+static void test_table_refs_for(int indexed)
+{
+ int N = 50;
+ char **want_names = reftable_calloc(sizeof(char *) * (N + 1));
+ int want_names_len = 0;
+ uint8_t want_hash[GIT_SHA1_RAWSZ];
+
+ struct reftable_write_options opts = {
+ .block_size = 256,
+ };
+ struct reftable_ref_record ref = { NULL };
+ int i = 0;
+ int n;
+ int err;
+ struct reftable_reader rd;
+ struct reftable_block_source source = { NULL };
+
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_writer *w =
+ reftable_new_writer(&strbuf_add_void, &buf, &opts);
+
+ struct reftable_iterator it = { NULL };
+ int j;
+
+ set_test_hash(want_hash, 4);
+
+ for (i = 0; i < N; i++) {
+ uint8_t hash[GIT_SHA1_RAWSZ];
+ char fill[51] = { 0 };
+ char name[100];
+ uint8_t hash1[GIT_SHA1_RAWSZ];
+ uint8_t hash2[GIT_SHA1_RAWSZ];
+ struct reftable_ref_record ref = { NULL };
+
+ memset(hash, i, sizeof(hash));
+ memset(fill, 'x', 50);
+ /* Put the variable part in the start */
+ snprintf(name, sizeof(name), "br%02d%s", i, fill);
+ name[40] = 0;
+ ref.refname = name;
+
+ set_test_hash(hash1, i / 4);
+ set_test_hash(hash2, 3 + i / 4);
+ ref.value_type = REFTABLE_REF_VAL2;
+ ref.value.val2.value = hash1;
+ ref.value.val2.target_value = hash2;
+
+ /* 80 bytes / entry, so 3 entries per block. Yields 17
+ */
+ /* blocks. */
+ n = reftable_writer_add_ref(w, &ref);
+ EXPECT(n == 0);
+
+ if (!memcmp(hash1, want_hash, GIT_SHA1_RAWSZ) ||
+ !memcmp(hash2, want_hash, GIT_SHA1_RAWSZ)) {
+ want_names[want_names_len++] = xstrdup(name);
+ }
+ }
+
+ n = reftable_writer_close(w);
+ EXPECT(n == 0);
+
+ reftable_writer_free(w);
+ w = NULL;
+
+ block_source_from_strbuf(&source, &buf);
+
+ err = init_reader(&rd, &source, "file.ref");
+ EXPECT_ERR(err);
+ if (!indexed) {
+ rd.obj_offsets.is_present = 0;
+ }
+
+ err = reftable_reader_seek_ref(&rd, &it, "");
+ EXPECT_ERR(err);
+ reftable_iterator_destroy(&it);
+
+ err = reftable_reader_refs_for(&rd, &it, want_hash);
+ EXPECT_ERR(err);
+
+ j = 0;
+ while (1) {
+ int err = reftable_iterator_next_ref(&it, &ref);
+ EXPECT(err >= 0);
+ if (err > 0) {
+ break;
+ }
+
+ EXPECT(j < want_names_len);
+ EXPECT(0 == strcmp(ref.refname, want_names[j]));
+ j++;
+ reftable_ref_record_release(&ref);
+ }
+ EXPECT(j == want_names_len);
+
+ strbuf_release(&buf);
+ free_names(want_names);
+ reftable_iterator_destroy(&it);
+ reader_close(&rd);
+}
+
+static void test_table_refs_for_no_index(void)
+{
+ test_table_refs_for(0);
+}
+
+static void test_table_refs_for_obj_index(void)
+{
+ test_table_refs_for(1);
+}
+
+static void test_write_empty_table(void)
+{
+ struct reftable_write_options opts = { 0 };
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_writer *w =
+ reftable_new_writer(&strbuf_add_void, &buf, &opts);
+ struct reftable_block_source source = { NULL };
+ struct reftable_reader *rd = NULL;
+ struct reftable_ref_record rec = { NULL };
+ struct reftable_iterator it = { NULL };
+ int err;
+
+ reftable_writer_set_limits(w, 1, 1);
+
+ err = reftable_writer_close(w);
+ EXPECT(err == REFTABLE_EMPTY_TABLE_ERROR);
+ reftable_writer_free(w);
+
+ EXPECT(buf.len == header_size(1) + footer_size(1));
+
+ block_source_from_strbuf(&source, &buf);
+
+ err = reftable_new_reader(&rd, &source, "filename");
+ EXPECT_ERR(err);
+
+ err = reftable_reader_seek_ref(rd, &it, "");
+ EXPECT_ERR(err);
+
+ err = reftable_iterator_next_ref(&it, &rec);
+ EXPECT(err > 0);
+
+ reftable_iterator_destroy(&it);
+ reftable_reader_free(rd);
+ strbuf_release(&buf);
+}
+
+static void test_write_key_order(void)
+{
+ struct reftable_write_options opts = { 0 };
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_writer *w =
+ reftable_new_writer(&strbuf_add_void, &buf, &opts);
+ struct reftable_ref_record refs[2] = {
+ {
+ .refname = "b",
+ .update_index = 1,
+ .value_type = REFTABLE_REF_SYMREF,
+ .value = {
+ .symref = "target",
+ },
+ }, {
+ .refname = "a",
+ .update_index = 1,
+ .value_type = REFTABLE_REF_SYMREF,
+ .value = {
+ .symref = "target",
+ },
+ }
+ };
+ int err;
+
+ reftable_writer_set_limits(w, 1, 1);
+ err = reftable_writer_add_ref(w, &refs[0]);
+ EXPECT_ERR(err);
+ err = reftable_writer_add_ref(w, &refs[1]);
+ printf("%d\n", err);
+ EXPECT(err == REFTABLE_API_ERROR);
+ reftable_writer_close(w);
+ reftable_writer_free(w);
+ strbuf_release(&buf);
+}
+
+static void test_corrupt_table_empty(void)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_block_source source = { NULL };
+ struct reftable_reader rd = { NULL };
+ int err;
+
+ block_source_from_strbuf(&source, &buf);
+ err = init_reader(&rd, &source, "file.log");
+ EXPECT(err == REFTABLE_FORMAT_ERROR);
+}
+
+static void test_corrupt_table(void)
+{
+ uint8_t zeros[1024] = { 0 };
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_block_source source = { NULL };
+ struct reftable_reader rd = { NULL };
+ int err;
+ strbuf_add(&buf, zeros, sizeof(zeros));
+
+ block_source_from_strbuf(&source, &buf);
+ err = init_reader(&rd, &source, "file.log");
+ EXPECT(err == REFTABLE_FORMAT_ERROR);
+ strbuf_release(&buf);
+}
+
+int readwrite_test_main(int argc, const char *argv[])
+{
+ RUN_TEST(test_corrupt_table);
+ RUN_TEST(test_corrupt_table_empty);
+ RUN_TEST(test_log_write_read);
+ RUN_TEST(test_write_key_order);
+ RUN_TEST(test_table_read_write_seek_linear_sha256);
+ RUN_TEST(test_log_buffer_size);
+ RUN_TEST(test_table_write_small_table);
+ RUN_TEST(test_buffer);
+ RUN_TEST(test_table_read_api);
+ RUN_TEST(test_table_read_write_sequential);
+ RUN_TEST(test_table_read_write_seek_linear);
+ RUN_TEST(test_table_read_write_seek_index);
+ RUN_TEST(test_table_refs_for_no_index);
+ RUN_TEST(test_table_refs_for_obj_index);
+ RUN_TEST(test_write_empty_table);
+ return 0;
+}
@@ -14,7 +14,7 @@ int block_test_main(int argc, const char **argv);
int merged_test_main(int argc, const char **argv);
int record_test_main(int argc, const char **argv);
int refname_test_main(int argc, const char **argv);
-int reftable_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);
int tree_test_main(int argc, const char **argv);
int reftable_dump_main(int argc, char *const *argv);
@@ -6,6 +6,7 @@ int cmd__reftable(int argc, const char **argv)
basics_test_main(argc, argv);
block_test_main(argc, argv);
record_test_main(argc, argv);
+ readwrite_test_main(argc, argv);
tree_test_main(argc, argv);
return 0;
}