From: Han-Wen Nienhuys <hanwen@xxxxxxxxxx>
The ID => ref map is trimming object IDs to a disambiguating prefix.
Check that we are computing their length correctly.
Signed-off-by: Han-Wen Nienhuys <hanwen@xxxxxxxxxx>
---
reftable/readwrite_test.c | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/reftable/readwrite_test.c b/reftable/readwrite_test.c
index b4371b75724..5f45cee39d6 100644
--- a/reftable/readwrite_test.c
+++ b/reftable/readwrite_test.c
@@ -638,6 +638,43 @@ static void test_write_object_id_min_length(void)
strbuf_release(&buf);
}
+static void test_write_object_id_length(void)
+{
+ struct reftable_write_options opts = {
+ .block_size = 75,
+ };
+ struct strbuf buf = STRBUF_INIT;
+ struct reftable_writer *w =
+ reftable_new_writer(&strbuf_add_void, &buf, &opts);
+ uint8_t hash[GIT_SHA1_RAWSZ] = {42};
+ struct reftable_ref_record ref = {
+ .update_index = 1,
+ .value_type = REFTABLE_REF_VAL1,
+ .value.val1 = hash,
+ };
+ int err;
+ int i;
+
+ reftable_writer_set_limits(w, 1, 1);
+
+ /* Write the same hash in many refs. If there is only 1 hash, the
+ * disambiguating prefix is length 0 */
+ for (i = 0; i < 256; i++) {
+ char name[256];
+ snprintf(name, sizeof(name), "ref%05d", i);
+ ref.refname = name;
+ ref.value.val1[15] = i;
+ err = reftable_writer_add_ref(w, &ref);
+ EXPECT_ERR(err);
+ }
+
+ err = reftable_writer_close(w);
+ EXPECT_ERR(err);
+ EXPECT(writer_stats(w)->object_id_len == 16);
+ reftable_writer_free(w);
+ strbuf_release(&buf);
+}
+
static void test_write_empty_key(void)
{
struct reftable_write_options opts = { 0 };
@@ -743,6 +780,7 @@ int readwrite_test_main(int argc, const char *argv[])
RUN_TEST(test_write_empty_key);
RUN_TEST(test_write_empty_table);
RUN_TEST(test_log_overflow);
+ RUN_TEST(test_write_object_id_length);
RUN_TEST(test_write_object_id_min_length);
return 0;
}
--
gitgitgadget
