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// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ZIRCON_SYSTEM_ULIB_ZBITL_TEST_VIEW_TESTS_H_
#define ZIRCON_SYSTEM_ULIB_ZBITL_TEST_VIEW_TESTS_H_
#include <memory>
#include <string_view>
#include "tests.h"
template <typename T>
struct BasicStringViewTestTraits {
using storage_type = std::basic_string_view<T>;
using payload_type = std::basic_string_view<T>;
static constexpr bool kDefaultConstructedViewHasStorageError = false;
static constexpr bool kExpectExtensibility = false;
static constexpr bool kExpectOneshotReads = true;
static constexpr bool kExpectUnbufferedReads = true;
static constexpr bool kExpectUnbufferedWrites = false;
struct Context {
storage_type TakeStorage() const {
return {reinterpret_cast<const T*>(buff_.get()), size_ / sizeof(T)};
}
std::unique_ptr<std::byte[]> buff_;
size_t size_ = 0;
};
static void Create(fbl::unique_fd fd, size_t size, Context* context) {
ASSERT_TRUE(fd);
const size_t n = (size + sizeof(T) - 1) / sizeof(T);
std::unique_ptr<std::byte[]> buff{new std::byte[n]};
EXPECT_EQ(static_cast<ssize_t>(n), read(fd.get(), buff.get(), n));
*context = {std::move(buff), n};
}
static void Read(storage_type storage, payload_type payload, size_t size, Bytes* contents) {
*contents = {reinterpret_cast<const char*>(payload.data()), payload.size() * sizeof(T)};
}
};
using StringTestTraits = BasicStringViewTestTraits<char>;
using ByteViewTestTraits = BasicStringViewTestTraits<std::byte>;
#endif // ZIRCON_SYSTEM_ULIB_ZBITL_TEST_VIEW_TESTS_H_