764 lines
21 KiB
C++
764 lines
21 KiB
C++
/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Copyright(c) 2022 John Wellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#include "unit_test_framework.h"
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#include "etl/expected.h"
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#include "etl/type_traits.h"
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#include <string>
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#include <vector>
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namespace
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{
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struct Value
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{
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std::string v;
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Value()
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{
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}
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Value(const std::string v_)
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: v(v_)
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{
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}
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operator std::string() const
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{
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return v;
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}
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};
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struct ValueM
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{
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ValueM()
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{
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}
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ValueM(const std::string& v_)
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: v(v_)
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{
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}
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ValueM(ValueM&&) = default;
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ValueM& operator =(ValueM&&) = default;
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ValueM(const ValueM&) = delete;
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ValueM& operator =(const ValueM&) = delete;
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std::string v;
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};
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struct Error
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{
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std::string e;
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Error() = default;
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Error(const Error&) = default;
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Error& operator =(const Error&) = default;
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Error(const std::string e_)
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: e(e_)
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{
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}
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Error& operator =(const std::string e_)
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{
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e = e_;
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return *this;
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}
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operator std::string() const
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{
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return e;
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}
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};
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struct ErrorM
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{
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ErrorM()
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{
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}
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ErrorM(const std::string& e_)
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: e(e_)
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{
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}
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operator std::string() const
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{
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return e;
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}
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ErrorM(ErrorM&&) = default;
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ErrorM& operator =(ErrorM&&) = default;
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ErrorM(const ErrorM&) = delete;
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ErrorM& operator =(const ErrorM&) = delete;
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std::string e;
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};
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using Expected = etl::expected<Value, Error>;
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using ExpectedV = etl::expected<void, Error>;
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using ExpectedM = etl::expected<ValueM, ErrorM>;
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using ExpectedVM = etl::expected<void, ErrorM>;
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using Unexpected = etl::unexpected<Error>;
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using UnexpectedV = etl::unexpected<Error>;
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using UnexpectedM = etl::unexpected<ErrorM>;
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}
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namespace
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{
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SUITE(test_expected)
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{
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//*************************************************************************
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TEST(test_default_constructor)
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{
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Expected expected;
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CHECK_TRUE(expected.has_value());
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CHECK_TRUE(bool(expected));
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}
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//*************************************************************************
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TEST(test_constructor_for_result_with_value)
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{
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Value input = { "value 1" };
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Expected expected(input);
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Value output = expected.value();
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CHECK_TRUE(expected.has_value());
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CHECK_TRUE(bool(expected));
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CHECK_TRUE(output.v == input.v);
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}
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//*************************************************************************
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TEST(test_constructor_for_const_result_with_value)
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{
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Value input = { "value 1" };
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const Expected expected(input);
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const Value& output = expected.value();
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CHECK_TRUE(expected.has_value());
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CHECK_TRUE(bool(expected));
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CHECK_TRUE(output.v == input.v);
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}
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//*************************************************************************
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TEST(test_constructor_for_moveable_result_with_value)
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{
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ValueM input = { "value 1" };
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ExpectedM expected(etl::move(input));
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ValueM output = etl::move(expected.value());
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CHECK_TRUE(expected.has_value());
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CHECK_TRUE(bool(expected));
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CHECK_TRUE(output.v == std::string("value 1"));
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}
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//*************************************************************************
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TEST(test_constructor_for_result_with_error)
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{
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Error input = { "error 1" };
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Unexpected unexpected(input);
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Expected expected(unexpected);
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Error output = expected.error();
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CHECK_FALSE(expected.has_value());
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CHECK_FALSE(bool(expected));
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CHECK(output.e == input.e);
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}
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//*************************************************************************
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TEST(test_constructor_for_const_result_with_error)
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{
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const Error input = { "error 1" };
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const Unexpected unexpected(input);
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const Expected expected(unexpected);
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const Error& output = expected.error();
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CHECK_FALSE(expected.has_value());
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CHECK_FALSE(bool(expected));
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CHECK(output.e == input.e);
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}
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//*************************************************************************
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TEST(test_constructor_for_moveable_result_with_error)
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{
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ErrorM input = { "error 1" };
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UnexpectedM unexpected(etl::move(input));
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ExpectedM expected(etl::move(unexpected));
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ErrorM output = etl::move(expected.error());
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CHECK_FALSE(expected.has_value());
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CHECK_FALSE(bool(expected));
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CHECK_TRUE(output.e == std::string("error 1"));
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}
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//*************************************************************************
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TEST(test_constructor_for_result_void_value_with_value)
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{
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ExpectedV expected;
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CHECK_TRUE(expected.has_value());
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CHECK_TRUE(bool(expected));
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}
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//*************************************************************************
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TEST(test_constructor_for_const_result_void_value_with_value)
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{
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const ExpectedV expected;
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CHECK_TRUE(expected.has_value());
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CHECK_TRUE(bool(expected));
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}
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//*************************************************************************
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TEST(test_constructor_for_result_void_value_with_error)
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{
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Error input = { "error 1" };
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UnexpectedV unexpected(input);
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ExpectedV expected(unexpected);
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Error output = expected.error();
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CHECK_FALSE(expected.has_value());
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CHECK_FALSE(bool(expected));
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CHECK_TRUE(output.e == input.e);
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}
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//*************************************************************************
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TEST(test_constructor_for_const_result_void_value_with_error)
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{
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const Error input = { "error 1" };
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const UnexpectedV unexpected(input);
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const ExpectedV expected(unexpected);
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const Error& output = expected.error();
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CHECK_FALSE(expected.has_value());
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CHECK_FALSE(bool(expected));
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CHECK_TRUE(output.e == input.e);
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}
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//*************************************************************************
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TEST(test_constructor_for_moveable_result_void_value_with_error)
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{
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ErrorM input = { "error 1" };
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UnexpectedM unexpected(etl::move(input));
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ExpectedM expected(etl::move(unexpected));
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ErrorM output = etl::move(expected.error());
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CHECK_FALSE(expected.has_value());
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CHECK_FALSE(bool(expected));
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CHECK(output.e == std::string("error 1"));
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}
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//*************************************************************************
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TEST(test_copy_construct)
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{
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Value input1 = { "value 1" };
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Expected expected1(input1);
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Expected expected2(expected1);
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Value output1 = expected2.value();
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CHECK_TRUE(expected1.has_value());
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CHECK_TRUE(expected2.has_value());
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CHECK(output1.v == input1.v);
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}
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//*************************************************************************
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TEST(test_copy_assign)
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{
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Value input1 = { "value 1" };
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Expected expected1(input1);
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Value input2 = { "value 2" };
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Expected expected2(input2);
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expected2 = expected1;
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Value output1 = expected1.value();
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Value output2 = expected2.value();
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CHECK_TRUE(expected1.has_value());
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CHECK_TRUE(expected2.has_value());
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//CHECK(output1.v != input1.v);
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//CHECK(output2.v != input1.v);
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//CHECK(output1.v == input2.v);
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//CHECK(output2.v == input2.v);
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}
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//*************************************************************************
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TEST(test_copy_assign_from_error)
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{
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Value input = { "value 1" };
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Expected expected(input);
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Error error = { "error 1" };
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Unexpected unexpected(error);
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expected = unexpected;
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Error output = expected.error();
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CHECK_FALSE(expected.has_value());
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CHECK_EQUAL(std::string(error), std::string(expected.error()));
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}
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//*************************************************************************
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TEST(test_move_construct)
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{
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ValueM input1 = { "value 1" };
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ExpectedM expected1(etl::move(input1));
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ExpectedM expected2(etl::move(expected1));
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ValueM output1 = etl::move(expected1.value());
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ValueM output2 = etl::move(expected2.value());
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CHECK_TRUE(expected1.has_value());
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CHECK_TRUE(expected2.has_value());
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CHECK_EQUAL("", output1.v);
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CHECK_EQUAL("value 1", output2.v);
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}
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//*************************************************************************
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TEST(test_move_assign)
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{
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ValueM input1 = { "value 1" };
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ExpectedM expected1(etl::move(input1));
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ValueM input2 = { "value 2" };
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ExpectedM expected2(etl::move(input2));
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expected2 = etl::move(expected1);
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ValueM output1 = etl::move(expected1.value());
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ValueM output2 = etl::move(expected2.value());
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CHECK_TRUE(expected1.has_value());
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CHECK_TRUE(expected2.has_value());
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CHECK_EQUAL("", output1.v);
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CHECK_EQUAL("value 1", output2.v);
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}
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//*************************************************************************
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TEST(test_move_assign_from_error)
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{
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ValueM input = { "value 1" };
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ExpectedM expected(etl::move(input));
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ErrorM error = { "error 1" };
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UnexpectedM unexpected(etl::move(error));
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expected = etl::move(unexpected);
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ErrorM output = etl::move(expected.error());
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CHECK_FALSE(expected.has_value());
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CHECK_EQUAL(std::string(error), std::string(expected.error()));
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}
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//*************************************************************************
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TEST(test_copy_construct_void_value)
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{
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Error input1 = { "error 1" };
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UnexpectedV unexpected1(input1);
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ExpectedV expected1(unexpected1);
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ExpectedV expected2(expected1);
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CHECK_FALSE(expected1.has_value());
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CHECK_FALSE(expected2.has_value());
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Error output1 = expected1.error();
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Error output2 = expected2.error();
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CHECK_EQUAL(input1.e, output1.e);
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CHECK_EQUAL(input1.e, output2.e);
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}
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//*************************************************************************
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TEST(test_copy_assign_void_value)
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{
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Error input1 = { "error 1" };
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UnexpectedV unexpected1(input1);
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Error input2 = { "error 2" };
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UnexpectedV unexpected2(input2);
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ExpectedV expected1(unexpected1);
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ExpectedV expected2(unexpected2);
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expected2 = expected1;
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Error output1 = expected1.error();
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Error output2 = expected2.error();
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CHECK_FALSE(expected1.has_value());
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CHECK_FALSE(expected2.has_value());
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CHECK_EQUAL(input1.e, output1.e);
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CHECK_EQUAL(input1.e, output2.e);
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}
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//*************************************************************************
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TEST(test_emplace_from_initializer_list)
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{
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struct S
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{
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S()
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: vi()
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, a(0)
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, b(0)
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{
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}
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S(std::initializer_list<int> il, int a_, int b_)
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: vi(il)
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, a(a_)
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, b(b_)
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{
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}
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std::vector<int> vi;
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int a;
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int b;
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};
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etl::expected<S, Error> exp;
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S s1({ 10, 11, 12 }, 1, 2);
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S s2 = exp.emplace({ 10, 11, 12 }, 1, 2);
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CHECK(s1.vi == s2.vi);
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CHECK_EQUAL(s1.a, s2.a);
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CHECK_EQUAL(s1.b, s2.b);
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}
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//*************************************************************************
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TEST(test_emplace_from_vargs)
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{
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struct S
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{
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S()
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: a(0)
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, b(0)
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{
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}
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S(int a_, int b_)
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: a(a_)
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, b(b_)
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{
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}
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int a;
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int b;
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};
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etl::expected<S, Error> exp;
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S s1(1, 2);
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S s2 = exp.emplace(1, 2);
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CHECK_EQUAL(s1.a, s2.a);
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CHECK_EQUAL(s1.b, s2.b);
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}
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//*************************************************************************
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TEST(test_move_construct_void_value)
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{
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ErrorM input1 = { "error 1" };
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UnexpectedM unexpected1(etl::move(input1));
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ExpectedVM expected1(etl::move(unexpected1));
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ExpectedVM expected2(etl::move(expected1));
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ErrorM output1 = etl::move(expected1.error());
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ErrorM output2 = etl::move(expected2.error());
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CHECK_FALSE(expected1.has_value());
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CHECK_FALSE(expected2.has_value());
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CHECK_EQUAL("", output1.e);
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CHECK_EQUAL("error 1", output2.e);
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}
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//*************************************************************************
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TEST(test_move_assign_void_value)
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{
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ErrorM input1 = { "error 1" };
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UnexpectedM unexpected1(etl::move(input1));
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ErrorM input2 = { "error 2" };
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UnexpectedM unexpected2(etl::move(input2));
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ExpectedVM expected1(etl::move(unexpected1));
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ExpectedVM expected2(etl::move(unexpected2));
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expected2 = etl::move(expected1);
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ErrorM output1 = etl::move(expected1.error());
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ErrorM output2 = etl::move(expected2.error());
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CHECK_FALSE(expected1.has_value());
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CHECK_FALSE(expected2.has_value());
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CHECK_EQUAL("", output1.e);
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CHECK_EQUAL("error 1", output2.e);
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}
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//*************************************************************************
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TEST(test_dereference_operators)
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{
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struct ExpectedType
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{
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ExpectedType(int i_)
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: i(i_)
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{
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}
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int i;
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};
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etl::expected<ExpectedType, int> exp = etl::unexpected<int>(0);
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const etl::expected<ExpectedType, int> cexp = etl::unexpected<int>(0);
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CHECK_THROW({ int i = (*exp).i; (void)i; }, etl::expected_invalid);
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CHECK_THROW({ int i = (*cexp).i; (void)i; }, etl::expected_invalid);
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CHECK_THROW({ int i = exp->i; (void)i; }, etl::expected_invalid);
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CHECK_THROW({ int i = cexp->i; (void)i; }, etl::expected_invalid);
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}
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|
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//*************************************************************************
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struct value_or_helper
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{
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Expected get_value() const
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|
{
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Value value = { "value5" };
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return Expected(value);
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}
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Expected get_error() const
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{
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Error error = { "error1" };
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return Expected(Unexpected(error));
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}
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};
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|
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TEST(test_chained_value_or_github_bug_720)
|
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{
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value_or_helper helper{};
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Value value1 = helper.get_value().value_or(Value("value1"));
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CHECK_EQUAL("value5", value1.v);
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Value value2 = helper.get_error().value_or(Value("value1"));
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CHECK_EQUAL("value1", value2.v);
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}
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//*************************************************************************
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TEST(test_assignment_bug_738)
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{
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etl::expected<int, int> test_exp{1};
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CHECK_TRUE(test_exp.has_value());
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test_exp = etl::unexpected<int>(2);
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CHECK_FALSE(test_exp.has_value());
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}
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//*************************************************************************
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TEST(test_expected_does_not_compile_with_ETL_LOG_ERRORS_bug_787)
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{
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etl::expected<int, int> test_exp = etl::unexpected<int>(0);
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bool thrown = false;
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std::string thrown_what;
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std::string exception_what = etl::expected_invalid(__FILE__, __LINE__).what();
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try
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{
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int i = *test_exp;
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(void)i;
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}
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catch (etl::exception& e)
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{
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thrown = true;
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thrown_what = e.what(); // what() should be accessible
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}
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CHECK_TRUE(thrown);
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CHECK_TRUE(exception_what == thrown_what);
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}
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//*************************************************************************
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TEST(test_expected_equal_operator)
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{
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etl::expected<int, int> test_exp = 1;
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etl::expected<int, int> test_exp_equal = 1;
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etl::expected<int, int> test_exp_unequal = 2;
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int test_val_equal = 1;
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int test_val_unequal = 2;
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etl::expected<int, int> test_unexp = etl::unexpected<int>(1);
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etl::expected<int, int> test_unexp_equal = etl::unexpected<int>(1);
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etl::expected<int, int> test_unexp_unequal = etl::unexpected<int>(2);
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CHECK_TRUE(test_exp == test_exp_equal);
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CHECK_FALSE(test_exp != test_exp_equal);
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CHECK_FALSE(test_exp == test_exp_unequal);
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CHECK_TRUE(test_exp != test_exp_unequal);
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CHECK_TRUE(test_exp == test_val_equal);
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CHECK_FALSE(test_exp != test_val_equal);
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CHECK_FALSE(test_exp == test_val_unequal);
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CHECK_TRUE(test_exp != test_val_unequal);
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CHECK_FALSE(test_exp == test_unexp);
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CHECK_TRUE(test_exp != test_unexp);
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CHECK_TRUE(test_unexp == test_unexp_equal);
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CHECK_FALSE(test_unexp != test_unexp_equal);
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CHECK_FALSE(test_unexp == test_unexp_unequal);
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CHECK_TRUE(test_unexp != test_unexp_unequal);
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}
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//*************************************************************************
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TEST(test_expected_void_equal_operator)
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{
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etl::expected<void, int> test_exp;
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etl::expected<void, int> test_exp2;
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etl::expected<void, int> test_unexp = etl::unexpected<int>(1);
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etl::expected<void, int> test_unexp2 = etl::unexpected<int>(2);
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CHECK_TRUE(test_exp == test_exp2);
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CHECK_FALSE(test_exp != test_exp2);
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CHECK_FALSE(test_exp == test_unexp);
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CHECK_TRUE(test_exp != test_unexp);
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CHECK_FALSE(test_unexp == test_unexp2);
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CHECK_TRUE(test_unexp != test_unexp2);
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}
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//*************************************************************************
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TEST(test_unexpected_equal_operator)
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{
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etl::unexpected<int> test_unexp = etl::unexpected<int>(1);
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etl::unexpected<int> test_unexp_equal = etl::unexpected<int>(1);
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etl::unexpected<int> test_unexp_unequal = etl::unexpected<int>(2);
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CHECK_TRUE(test_unexp == test_unexp_equal);
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CHECK_FALSE(test_unexp != test_unexp_equal);
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CHECK_FALSE(test_unexp == test_unexp_unequal);
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CHECK_TRUE(test_unexp != test_unexp_unequal);
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}
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//*************************************************************************
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TEST(test_expected_swap)
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{
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etl::expected<int, int> test_exp_1 = 1;
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etl::expected<int, int> test_exp_2 = 2;
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etl::expected<int, int> test_unexp_1 = etl::unexpected<int>(1);
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etl::expected<int, int> test_unexp_2 = etl::unexpected<int>(2);
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etl::expected<int, int> test_exp_1_swap = test_exp_1;
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etl::expected<int, int> test_exp_2_swap = test_exp_2;
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swap(test_exp_1_swap, test_exp_2_swap);
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CHECK_TRUE(test_exp_1_swap == test_exp_2);
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CHECK_TRUE(test_exp_2_swap == test_exp_1);
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etl::expected<int, int> test_unexp_1_swap = test_unexp_1;
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etl::expected<int, int> test_unexp_2_swap = test_unexp_2;
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swap(test_unexp_1_swap, test_unexp_2_swap);
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CHECK_TRUE(test_unexp_1_swap == test_unexp_2);
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CHECK_TRUE(test_unexp_2_swap == test_unexp_1);
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etl::expected<int, int> test_exp_swap = test_exp_1;
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etl::expected<int, int> test_unexp_swap = test_unexp_1;
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swap(test_exp_swap, test_unexp_swap);
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CHECK_TRUE(test_exp_swap == test_unexp_1);
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CHECK_TRUE(test_unexp_swap == test_exp_1);
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}
|
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|
|
//*************************************************************************
|
|
TEST(test_expected_void_swap)
|
|
{
|
|
etl::expected<void, int> test_exp;
|
|
etl::expected<void, int> test_unexp = etl::unexpected<int>(1);
|
|
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etl::expected<void, int> test_exp_swap = test_exp;
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etl::expected<void, int> test_unexp_swap = test_unexp;
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swap(test_exp_swap, test_unexp_swap);
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CHECK_TRUE(test_exp_swap == test_unexp);
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|
CHECK_TRUE(test_unexp_swap == test_exp);
|
|
}
|
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|
|
//*************************************************************************
|
|
TEST(test_unexpected_swap)
|
|
{
|
|
etl::unexpected<int> test_unexp_1 = etl::unexpected<int>(1);
|
|
etl::unexpected<int> test_unexp_2 = etl::unexpected<int>(2);
|
|
|
|
etl::unexpected<int> test_unexp_1_swap = test_unexp_1;
|
|
etl::unexpected<int> test_unexp_2_swap = test_unexp_2;
|
|
|
|
swap(test_unexp_1_swap, test_unexp_2_swap);
|
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|
|
CHECK_TRUE(test_unexp_1_swap == test_unexp_2);
|
|
CHECK_TRUE(test_unexp_2_swap == test_unexp_1);
|
|
}
|
|
};
|
|
}
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