mirror of https://github.com/openXC7/prjxray.git
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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* Copyright (C) 2017-2020 The Project X-Ray Authors.
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*
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* Use of this source code is governed by a ISC-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/ISC
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*
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* SPDX-License-Identifier: ISC
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*/
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#include <prjxray/big_endian_span.h>
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#include <cstdint>
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#include <vector>
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#include <gtest/gtest.h>
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TEST(BigEndianSpanTest, Read32WithEmptySpan) {
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std::vector<uint8_t> bytes;
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auto words = prjxray::make_big_endian_span<uint32_t>(bytes);
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EXPECT_EQ(words.size(), static_cast<size_t>(0));
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}
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TEST(BigEndianSpanTest, Read32WithTooFewBytes) {
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std::vector<uint8_t> bytes{0x0, 0x1, 0x2};
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auto words = prjxray::make_big_endian_span<uint32_t>(bytes);
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EXPECT_EQ(words.size(), static_cast<size_t>(0));
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}
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TEST(BigEndianSpanTest, Read32WithExactBytes) {
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std::vector<uint8_t> bytes{0x0, 0x1, 0x2, 0x3};
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auto words = prjxray::make_big_endian_span<uint32_t>(bytes);
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ASSERT_EQ(words.size(), static_cast<size_t>(1));
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EXPECT_EQ(words[0], static_cast<uint32_t>(0x00010203));
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}
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TEST(BigEndianSpanTest, Read32WithMultipleWords) {
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std::vector<uint8_t> bytes{0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7};
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auto words = prjxray::make_big_endian_span<uint32_t>(bytes);
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ASSERT_EQ(words.size(), static_cast<size_t>(2));
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EXPECT_EQ(words[0], static_cast<uint32_t>(0x00010203));
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EXPECT_EQ(words[1], static_cast<uint32_t>(0x04050607));
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}
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TEST(BigEndianSpanTest, Write32) {
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std::vector<uint8_t> bytes{0x0, 0x1, 0x2, 0x3};
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auto words = prjxray::make_big_endian_span<uint32_t>(bytes);
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words[0] = 0x04050607;
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std::vector<uint8_t> expected{0x4, 0x5, 0x6, 0x7};
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EXPECT_EQ(bytes, expected);
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}
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