chromium/components/viz/common/surfaces/parent_local_surface_id_allocator_unittest.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/viz/common/surfaces/parent_local_surface_id_allocator.h"

#include <memory>

#include "testing/gtest/include/gtest/gtest.h"

// ParentLocalSurfaceIdAllocator has 2 accessors which do not alter state:
// - GetCurrentLocalSurfaceId()
// - is_allocation_suppressed()
//
// For every operation which changes state we can test:
// - the operation completed as expected,
// - the accessors did not change, and/or
// - the accessors changed in the way we expected.

namespace viz {

class ParentLocalSurfaceIdAllocatorTest : public testing::Test { … };

// UpdateFromChild() on a parent allocator should accept the child's sequence
// number. But it should continue to use its own parent sequence number and
// embed_token.
TEST_F(ParentLocalSurfaceIdAllocatorTest,
       UpdateFromChildOnlyUpdatesExpectedLocalSurfaceIdComponents) { … }

// GenerateId() on a parent allocator should monotonically increment the parent
// sequence number and use the previous embed_token.
TEST_F(ParentLocalSurfaceIdAllocatorTest,
       GenerateIdOnlyUpdatesExpectedLocalSurfaceIdComponents) { … }

}  // namespace viz