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62 lines
1.7 KiB
62 lines
1.7 KiB
// Copyright 2017 Google LLC
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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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// Implements a fake filesystem, useful for tests.
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#ifndef CPU_FEATURES_TEST_FILESYSTEM_FOR_TESTING_H_
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#define CPU_FEATURES_TEST_FILESYSTEM_FOR_TESTING_H_
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include "internal/filesystem.h"
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namespace cpu_features {
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class FakeFile {
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public:
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explicit FakeFile(int file_descriptor, const char* content);
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~FakeFile();
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void Open();
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void Close();
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int Read(int fd, void* buf, size_t count);
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int GetFileDescriptor() const { return file_descriptor_; }
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private:
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const int file_descriptor_;
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const std::string content_;
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bool opened_ = false;
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size_t head_index_ = 0;
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};
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class FakeFilesystem {
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public:
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void Reset();
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FakeFile* CreateFile(const std::string& filename, const char* content);
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FakeFile* FindFileOrDie(const int file_descriptor) const;
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FakeFile* FindFileOrNull(const std::string& filename) const;
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private:
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int next_file_descriptor_ = 0;
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std::unordered_map<std::string, std::unique_ptr<FakeFile>> files_;
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};
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FakeFilesystem& GetEmptyFilesystem();
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} // namespace cpu_features
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#endif // CPU_FEATURES_TEST_FILESYSTEM_FOR_TESTING_H_
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