1 files changed, 114 insertions, 0 deletions
diff --git a/examples/file_reader_factory_test.cc b/examples/file_reader_factory_test.cc
new file mode 100644
index 0000000..346f9f8
--- /dev/null
+++ b/examples/file_reader_factory_test.cc
@@ -0,0 +1,114 @@
+// Copyright 2021 The libgav1 Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "examples/file_reader_factory.h"
+
+#include <cstddef>
+#include <cstdint>
+#include <memory>
+#include <new>
+#include <string>
+#include <vector>
+
+#include "absl/memory/memory.h"
+#include "examples/file_reader_interface.h"
+#include "gtest/gtest.h"
+
+namespace libgav1 {
+namespace {
+
+class AlwaysFailFileReader : public FileReaderInterface {
+ public:
+  static std::unique_ptr<FileReaderInterface> Open(
+      const std::string& /*file_name*/, bool /*error_tolerant*/) {
+    return nullptr;
+  }
+
+  AlwaysFailFileReader() = delete;
+  AlwaysFailFileReader(const AlwaysFailFileReader&) = delete;
+  AlwaysFailFileReader& operator=(const AlwaysFailFileReader&) = delete;
+  // Note this isn't overridden as the class can never be instantiated. This
+  // avoids an unused function warning.
+  // ~AlwaysFailFileReader() override = default;
+
+  bool ReadTemporalUnit(std::vector<uint8_t>* /*data*/,
+                        int64_t* /*pts*/) override {
+    return false;
+  }
+  bool IsEndOfFile() const override { return false; }
+
+  size_t width() const override { return 0; }
+  size_t height() const override { return 0; }
+  size_t frame_rate() const override { return 0; }
+  size_t time_scale() const override { return 0; }
+
+  static bool is_registered_;
+};
+
+class AlwaysOkFileReader : public FileReaderInterface {
+ public:
+  static std::unique_ptr<FileReaderInterface> Open(
+      const std::string& /*file_name*/, bool /*error_tolerant*/) {
+    auto reader = absl::WrapUnique(new (std::nothrow) AlwaysOkFileReader());
+
+    return reader;
+  }
+
+  AlwaysOkFileReader(const AlwaysOkFileReader&) = delete;
+  AlwaysOkFileReader& operator=(const AlwaysOkFileReader&) = delete;
+  ~AlwaysOkFileReader() override = default;
+
+  bool ReadTemporalUnit(std::vector<uint8_t>* /*data*/,
+                        int64_t* /*pts*/) override {
+    return true;
+  }
+  bool IsEndOfFile() const override { return true; }
+
+  size_t width() const override { return 1; }
+  size_t height() const override { return 1; }
+  size_t frame_rate() const override { return 1; }
+  size_t time_scale() const override { return 1; }
+
+  static bool is_registered_;
+
+ private:
+  AlwaysOkFileReader() = default;
+};
+
+bool AlwaysFailFileReader::is_registered_ =
+    FileReaderFactory::RegisterReader(AlwaysFailFileReader::Open);
+
+bool AlwaysOkFileReader::is_registered_ =
+    FileReaderFactory::RegisterReader(AlwaysOkFileReader::Open);
+
+TEST(FileReaderFactoryTest, RegistrationFail) {
+  EXPECT_FALSE(FileReaderFactory::RegisterReader(nullptr));
+}
+
+TEST(FileReaderFactoryTest, OpenReader) {
+  ASSERT_TRUE(AlwaysOkFileReader::is_registered_);
+  ASSERT_TRUE(AlwaysFailFileReader::is_registered_);
+
+  auto reader = FileReaderFactory::OpenReader("fake file");
+  EXPECT_NE(reader, nullptr);
+  EXPECT_TRUE(reader->IsEndOfFile());
+  EXPECT_TRUE(reader->ReadTemporalUnit(nullptr, nullptr));
+  EXPECT_EQ(reader->width(), 1);
+  EXPECT_EQ(reader->height(), 1);
+  EXPECT_EQ(reader->frame_rate(), 1);
+  EXPECT_EQ(reader->time_scale(), 1);
+}
+
+}  // namespace
+}  // namespace libgav1