webm2pes: Begin addition of tests.

Just the basics:
- Some new test utilities.
- Basic setup for webm2pes testing.

Change-Id: I16bf0f5ef36e7c01f2788b2c92600d6a936bbd40

testing/webm2pes_tests.cc

@@ -0,0 +1,65 @@
+// Copyright (c) 2016 The WebM project authors. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree. An additional intellectual property rights grant can be found
+// in the file PATENTS.  All contributing project authors may
+// be found in the AUTHORS file in the root of the source tree.
+#include "webm2pes.h"
+
+#include <cstdint>
+#include <cstdio>
+#include <limits>
+#include <vector>
+
+#include "gtest/gtest.h"
+
+#include "common/libwebm_utils.h"
+#include "testing/test_util.h"
+
+namespace {
+class Webm2PesTests : public ::testing::Test {
+ public:
+  typedef std::vector<std::uint8_t> PesFileData;
+  Webm2PesTests() {}
+  bool CreateAndLoadTestInput() {
+    libwebm::Webm2Pes converter(input_file_name_, temp_file_name_.name());
+    EXPECT_TRUE(converter.ConvertToFile());
+    pes_file_size_ = libwebm::test::GetFileSize(pes_file_name());
+    EXPECT_GT(pes_file_size_, 0);
+    pes_file_data_.reserve(pes_file_size_);
+    EXPECT_EQ(pes_file_size_, pes_file_data_.capacity());
+    libwebm::FilePtr file = libwebm::FilePtr(
+        std::fopen(pes_file_name().c_str(), "rb"), libwebm::FILEDeleter());
+    EXPECT_EQ(std::fread(&pes_file_data_[0], 1, pes_file_size_, file.get()),
+              pes_file_size_);
+    return true;
+  }
+  ~Webm2PesTests() = default;
+
+  const std::string& pes_file_name() const { return temp_file_name_.name(); }
+  std::uint64_t pes_file_size() const { return pes_file_size_; }
+  const PesFileData& pes_file_data() const { return pes_file_data_; }
+
+ private:
+  const libwebm::test::TempFileDeleter temp_file_name_;
+  const std::string input_file_name_ =
+      libwebm::test::GetTestFilePath("bbb_480p_vp9_opus_1second.webm");
+  std::uint64_t pes_file_size_ = 0;
+  PesFileData pes_file_data_;
+};
+
+TEST_F(Webm2PesTests, CreatePesFile) {
+  EXPECT_TRUE(CreateAndLoadTestInput());
+}
+
+TEST_F(Webm2PesTests, CanParseFirstPacket) {
+  EXPECT_TRUE(CreateAndLoadTestInput());
+}
+
+}  // namespace
+
+int main(int argc, char* argv[]) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}