//
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// Copyright (C) 2009 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include "update_engine/payload_generator/graph_utils.h"
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#include <utility>
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#include <vector>
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#include <gtest/gtest.h>
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#include "update_engine/payload_consumer/payload_constants.h"
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#include "update_engine/payload_generator/extent_ranges.h"
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#include "update_engine/payload_generator/extent_utils.h"
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using std::make_pair;
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using std::vector;
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namespace chromeos_update_engine {
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class GraphUtilsTest : public ::testing::Test {};
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TEST(GraphUtilsTest, SimpleTest) {
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Graph graph(2);
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graph[0].out_edges.insert(make_pair(1, EdgeProperties()));
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vector<Extent>& extents = graph[0].out_edges[1].extents;
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EXPECT_EQ(0U, extents.size());
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AppendBlockToExtents(&extents, 0);
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EXPECT_EQ(1U, extents.size());
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AppendBlockToExtents(&extents, 1);
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AppendBlockToExtents(&extents, 2);
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EXPECT_EQ(1U, extents.size());
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AppendBlockToExtents(&extents, 4);
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EXPECT_EQ(2U, extents.size());
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EXPECT_EQ(0U, extents[0].start_block());
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EXPECT_EQ(3U, extents[0].num_blocks());
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EXPECT_EQ(4U, extents[1].start_block());
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EXPECT_EQ(1U, extents[1].num_blocks());
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EXPECT_EQ(4U, graph_utils::EdgeWeight(graph, make_pair(0, 1)));
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}
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TEST(GraphUtilsTest, DepsTest) {
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Graph graph(3);
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graph_utils::AddReadBeforeDep(&graph[0], 1, 3);
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EXPECT_EQ(1U, graph[0].out_edges.size());
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{
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Extent& extent = graph[0].out_edges[1].extents[0];
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EXPECT_EQ(3U, extent.start_block());
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EXPECT_EQ(1U, extent.num_blocks());
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}
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graph_utils::AddReadBeforeDep(&graph[0], 1, 4);
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EXPECT_EQ(1U, graph[0].out_edges.size());
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{
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Extent& extent = graph[0].out_edges[1].extents[0];
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EXPECT_EQ(3U, extent.start_block());
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EXPECT_EQ(2U, extent.num_blocks());
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}
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graph_utils::AddReadBeforeDepExtents(
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&graph[2], 1, vector<Extent>(1, ExtentForRange(5, 2)));
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EXPECT_EQ(1U, graph[2].out_edges.size());
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{
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Extent& extent = graph[2].out_edges[1].extents[0];
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EXPECT_EQ(5U, extent.start_block());
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EXPECT_EQ(2U, extent.num_blocks());
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}
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// Change most recent edge from read-before to write-before
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graph[2].out_edges[1].write_extents.swap(graph[2].out_edges[1].extents);
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graph_utils::DropWriteBeforeDeps(&graph[2].out_edges);
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EXPECT_EQ(0U, graph[2].out_edges.size());
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EXPECT_EQ(1U, graph[0].out_edges.size());
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graph_utils::DropIncomingEdgesTo(&graph, 1);
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EXPECT_EQ(0U, graph[0].out_edges.size());
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}
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} // namespace chromeos_update_engine
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