parameter, a REFTABLE_FORMAT_ERROR is thrown. This case is
currently left unexercised, so add a test for the same.

Mentored-by: Patrick Steinhardt [off-list ref]
Mentored-by: Christian Couder [off-list ref]
Signed-off-by: Chandra Pratap <redacted>
---
 t/unit-tests/t-reftable-merged.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/t/unit-tests/t-reftable-merged.c b/t/unit-tests/t-reftable-merged.c
index e0054e379e..50047aa90b 100644
--- a/t/unit-tests/t-reftable-merged.c
+++ b/t/unit-tests/t-reftable-merged.c

@@ -11,6 +11,7 @@ license that can be found in the LICENSE file or at
 #include "reftable/constants.h"
 #include "reftable/merged.h"
 #include "reftable/reader.h"
+#include "reftable/reftable-error.h"
 #include "reftable/reftable-generic.h"
 #include "reftable/reftable-merged.h"
 #include "reftable/reftable-writer.h"

@@ -440,6 +441,8 @@ static void t_default_write_opts(void)
 	check_int(hash_id, ==, GIT_SHA1_FORMAT_ID);

 	reftable_table_from_reader(&tab[0], rd);
+	err = reftable_new_merged_table(&merged, tab, 1, GIT_SHA256_FORMAT_ID);
+	check_int(err, ==, REFTABLE_FORMAT_ERROR);
 	err = reftable_new_merged_table(&merged, tab, 1, GIT_SHA1_FORMAT_ID);
 	check(!err);

--

2.45.2.404.g9eaef5822c