reftable_record_is_deletion() is a function defined in
reftable/record.{c, h} that determines whether a record is of
type deletion or not. In the current testing setup, this function
is left untested for all the four record types (ref, log, obj, index).

Add tests for this function in the case of ref records.

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-record.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/t/unit-tests/t-reftable-record.c b/t/unit-tests/t-reftable-record.c
index 1f9c830631..cbc2ce93b2 100644
--- a/t/unit-tests/t-reftable-record.c
+++ b/t/unit-tests/t-reftable-record.c

@@ -108,6 +108,7 @@ static void test_reftable_ref_record_roundtrip(void)
 	for (int i = REFTABLE_REF_DELETION; i < REFTABLE_NR_REF_VALUETYPES; i++) {
 		struct reftable_record in = {
 			.type = BLOCK_TYPE_REF,
+			.u.ref.value_type = i,
 		};
 		struct reftable_record out = { .type = BLOCK_TYPE_REF };
 		struct strbuf key = STRBUF_INIT;

@@ -121,15 +122,19 @@ static void test_reftable_ref_record_roundtrip(void)
 		in.u.ref.value_type = i;
 		switch (i) {
 		case REFTABLE_REF_DELETION:
+			check(reftable_record_is_deletion(&in));
 			break;
 		case REFTABLE_REF_VAL1:
+			check(!reftable_record_is_deletion(&in));
 			set_hash(in.u.ref.value.val1, 1);
 			break;
 		case REFTABLE_REF_VAL2:
+			check(!reftable_record_is_deletion(&in));
 			set_hash(in.u.ref.value.val2.value, 1);
 			set_hash(in.u.ref.value.val2.target_value, 2);
 			break;
 		case REFTABLE_REF_SYMREF:
+			check(!reftable_record_is_deletion(&in));
 			in.u.ref.value.symref = xstrdup("target");
 			break;
 		}