1 files changed, 148 insertions, 0 deletions
diff --git a/src/test/librbd/object_map/test_mock_SnapshotRollbackRequest.cc b/src/test/librbd/object_map/test_mock_SnapshotRollbackRequest.cc
new file mode 100644
index 000000000..7b89a0996
--- /dev/null
+++ b/src/test/librbd/object_map/test_mock_SnapshotRollbackRequest.cc
@@ -0,0 +1,148 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "test/librbd/test_mock_fixture.h"
+#include "test/librbd/test_support.h"
+#include "test/librados_test_stub/MockTestMemIoCtxImpl.h"
+#include "librbd/ImageState.h"
+#include "librbd/internal.h"
+#include "librbd/ObjectMap.h"
+#include "librbd/object_map/SnapshotRollbackRequest.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace librbd {
+namespace object_map {
+
+using ::testing::_;
+using ::testing::DoDefault;
+using ::testing::Return;
+using ::testing::StrEq;
+
+class TestMockObjectMapSnapshotRollbackRequest : public TestMockFixture {
+public:
+  void expect_read_map(librbd::ImageCtx *ictx, uint64_t snap_id, int r) {
+    if (r < 0) {
+      EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
+                  read(ObjectMap<>::object_map_name(ictx->id, snap_id),
+                       0, 0, _, _, _)).WillOnce(Return(r));
+    } else {
+      EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
+                  read(ObjectMap<>::object_map_name(ictx->id, snap_id),
+                       0, 0, _, _, _)).WillOnce(DoDefault());
+    }
+  }
+
+  void expect_write_map(librbd::ImageCtx *ictx, int r) {
+    EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
+                exec(ObjectMap<>::object_map_name(ictx->id, CEPH_NOSNAP), _,
+		     StrEq("lock"), StrEq("assert_locked"), _, _, _, _))
+                  .WillOnce(DoDefault());
+    if (r < 0) {
+      EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
+                  write_full(
+                    ObjectMap<>::object_map_name(ictx->id, CEPH_NOSNAP), _, _))
+                  .WillOnce(Return(r));
+    } else {
+      EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
+                  write_full(
+                    ObjectMap<>::object_map_name(ictx->id, CEPH_NOSNAP), _, _))
+                  .WillOnce(DoDefault());
+    }
+  }
+
+  void expect_invalidate(librbd::ImageCtx *ictx, uint32_t times) {
+    EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
+                exec(ictx->header_oid, _, StrEq("rbd"), StrEq("set_flags"), _,
+                     _, _, _))
+                  .Times(times)
+                  .WillRepeatedly(DoDefault());
+  }
+};
+
+TEST_F(TestMockObjectMapSnapshotRollbackRequest, Success) {
+  REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
+
+  librbd::ImageCtx *ictx;
+  ASSERT_EQ(0, open_image(m_image_name, &ictx));
+  ASSERT_EQ(0, snap_create(*ictx, "snap1"));
+  ASSERT_EQ(0, ictx->state->refresh_if_required());
+
+  uint64_t snap_id = ictx->snap_info.rbegin()->first;
+  expect_read_map(ictx, snap_id, 0);
+  expect_write_map(ictx, 0);
+
+  C_SaferCond cond_ctx;
+  AsyncRequest<> *request = new SnapshotRollbackRequest(
+    *ictx, snap_id, &cond_ctx);
+  request->send();
+  ASSERT_EQ(0, cond_ctx.wait());
+
+  expect_unlock_exclusive_lock(*ictx);
+}
+
+TEST_F(TestMockObjectMapSnapshotRollbackRequest, ReadMapError) {
+  REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
+
+  librbd::ImageCtx *ictx;
+  ASSERT_EQ(0, open_image(m_image_name, &ictx));
+  ASSERT_EQ(0, snap_create(*ictx, "snap1"));
+  ASSERT_EQ(0, ictx->state->refresh_if_required());
+
+  uint64_t snap_id = ictx->snap_info.rbegin()->first;
+  expect_read_map(ictx, snap_id, -ENOENT);
+  expect_invalidate(ictx, 2);
+
+  C_SaferCond cond_ctx;
+  AsyncRequest<> *request = new SnapshotRollbackRequest(
+    *ictx, snap_id, &cond_ctx);
+  request->send();
+  ASSERT_EQ(0, cond_ctx.wait());
+
+  {
+    std::shared_lock image_locker{ictx->image_lock};
+    uint64_t flags;
+    ASSERT_EQ(0, ictx->get_flags(snap_id, &flags));
+    ASSERT_NE(0U, flags & RBD_FLAG_OBJECT_MAP_INVALID);
+  }
+  bool flags_set;
+  ASSERT_EQ(0, ictx->test_flags(CEPH_NOSNAP,
+                                RBD_FLAG_OBJECT_MAP_INVALID, &flags_set));
+  ASSERT_TRUE(flags_set);
+  expect_unlock_exclusive_lock(*ictx);
+}
+
+TEST_F(TestMockObjectMapSnapshotRollbackRequest, WriteMapError) {
+  REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
+
+  librbd::ImageCtx *ictx;
+  ASSERT_EQ(0, open_image(m_image_name, &ictx));
+  ASSERT_EQ(0, snap_create(*ictx, "snap1"));
+  ASSERT_EQ(0, ictx->state->refresh_if_required());
+
+  uint64_t snap_id = ictx->snap_info.rbegin()->first;
+  expect_read_map(ictx, snap_id, 0);
+  expect_write_map(ictx, -EINVAL);
+  expect_invalidate(ictx, 1);
+
+  C_SaferCond cond_ctx;
+  AsyncRequest<> *request = new SnapshotRollbackRequest(
+    *ictx, snap_id, &cond_ctx);
+  request->send();
+  ASSERT_EQ(0, cond_ctx.wait());
+
+  {
+    std::shared_lock image_locker{ictx->image_lock};
+    uint64_t flags;
+    ASSERT_EQ(0, ictx->get_flags(snap_id, &flags));
+    ASSERT_EQ(0U, flags & RBD_FLAG_OBJECT_MAP_INVALID);
+  }
+  bool flags_set;
+  ASSERT_EQ(0, ictx->test_flags(CEPH_NOSNAP,
+                                RBD_FLAG_OBJECT_MAP_INVALID, &flags_set));
+  ASSERT_TRUE(flags_set);
+  expect_unlock_exclusive_lock(*ictx);
+}
+
+} // namespace object_map
+} // namespace librbd