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94 lines
3.4 KiB
C++
94 lines
3.4 KiB
C++
// Copyright 2016 The Draco Authors.
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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 "compression/mesh/mesh_encoder.h"
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#include "compression/encode.h"
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#include "core/draco_test_base.h"
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#include "core/draco_test_utils.h"
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#include "io/obj_decoder.h"
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namespace draco {
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class MeshEncoderTest : public ::testing::TestWithParam<const char *> {
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protected:
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MeshEncoderTest() {}
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// Fills out_method with id of the encoding method used for the test.
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// Returns false if the encoding method is not set properly.
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bool GetMethod(MeshEncoderMethod *out_method) const {
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if (strcmp(GetParam(), "sequential") == 0) {
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*out_method = MESH_SEQUENTIAL_ENCODING;
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return true;
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}
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if (strcmp(GetParam(), "edgebreaker") == 0) {
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*out_method = MESH_EDGEBREAKER_ENCODING;
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return true;
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}
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return false;
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}
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std::unique_ptr<Mesh> DecodeObj(const std::string &file_name) const {
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const std::string path = GetTestFileFullPath(file_name);
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std::unique_ptr<Mesh> mesh(new Mesh());
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ObjDecoder decoder;
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if (!decoder.DecodeFromFile(path, mesh.get()))
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return nullptr;
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return mesh;
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}
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};
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TEST_P(MeshEncoderTest, EncodeGoldenMesh) {
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// This test verifies that a given set of meshes are encoded to an expected
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// output. This is useful for catching bugs in code changes that are not
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// supposed to change the encoding.
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// The test is expected to fail when the encoding is modified. In such case,
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// the golden files need to be updated to reflect the changes.
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MeshEncoderMethod method;
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ASSERT_TRUE(GetMethod(&method))
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<< "Test is run for an unknown encoding method";
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const std::string file_name = "test_nm.obj";
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std::string golden_file_name = file_name;
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golden_file_name += '.';
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golden_file_name += GetParam();
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golden_file_name += ".out";
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const std::unique_ptr<Mesh> mesh(DecodeObj(file_name));
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ASSERT_NE(mesh, nullptr) << "Failed to load test model " << file_name;
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EncoderOptions options = CreateDefaultEncoderOptions();
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EncoderBuffer buffer;
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ASSERT_TRUE(EncodeMeshToBuffer(*mesh.get(), options, &buffer))
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<< "Failed encoding test mesh " << file_name << " with method "
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<< GetParam();
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if (!FLAGS_update_golden_files) {
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EXPECT_TRUE(
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CompareGoldenFile(golden_file_name, buffer.data(), buffer.size()))
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<< "Encoded data is different from the golden file. Please verify that "
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"the"
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" encoding works as expected and update the golden file if necessary"
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" (run the test with --update_golden_files flag).";
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} else {
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// Save the files into the local folder.
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EXPECT_TRUE(
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GenerateGoldenFile(golden_file_name, buffer.data(), buffer.size()))
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<< "Failed to generate new golden file for " << file_name;
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}
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}
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INSTANTIATE_TEST_CASE_P(MeshEncoderTests, MeshEncoderTest,
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::testing::Values("sequential", "edgebreaker"));
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} // namespace draco
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