crimson/tests: add simple multi-replica test for backfill.

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

diff --git a/src/test/crimson/test_backfill.cc b/src/test/crimson/test_backfill.cc
index 0409d47253d24682066e33d2f0ee6dc44d9bf7dc..6caa18fd9988c62a967b381b1a4db3e8f7ccb113 100644 (file)
--- a/src/test/crimson/test_backfill.cc
+++ b/src/test/crimson/test_backfill.cc
@@ -355,7 +355,7 @@ TEST(backfill, same_primary_same_replica)
   EXPECT_TRUE(cluster_fixture.all_stores_look_like(reference_store));
 }
 
-TEST(backfill, single_empty_replica)
+TEST(backfill, one_empty_replica)
 {
   const auto reference_store = FakeStore{ {
     { "1:00058bcc:::rbd_data.1018ac3e755.00000000000000d5:head", {10, 234} },
@@ -376,6 +376,27 @@ TEST(backfill, single_empty_replica)
   EXPECT_TRUE(cluster_fixture.all_stores_look_like(reference_store));
 }
 
+TEST(backfill, two_empty_replicas)
+{
+  const auto reference_store = FakeStore{ {
+    { "1:00058bcc:::rbd_data.1018ac3e755.00000000000000d5:head", {10, 234} },
+    { "1:00ed7f8e:::rbd_data.1018ac3e755.00000000000000af:head", {10, 196} },
+    { "1:01483aea:::rbd_data.1018ac3e755.0000000000000095:head", {10, 169} },
+  }};
+  auto cluster_fixture = BackfillFixtureBuilder::add_source(
+    reference_store.objs
+  ).add_target(
+    { /* nothing 1 */ }
+  ).add_target(
+    { /* nothing 2 */ }
+  ).get_result();
+
+  EXPECT_CALL(cluster_fixture, backfilled);
+  cluster_fixture.next_till_done();
+
+  EXPECT_TRUE(cluster_fixture.all_stores_look_like(reference_store));
+}
+
 namespace StoreRandomizer {
   // FIXME: copied & pasted from test/test_snap_mapper.cc. We need to
   // find a way to avoid code duplication in test. A static library?