72 lines
1.2 KiB
C++
72 lines
1.2 KiB
C++
#include <gtest/gtest.h>
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#include <m5_utility/stl/optional.hpp>
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TEST(Optional, Assignment)
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{
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m5::stl::optional<int> o1 = 42;
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m5::stl::optional<int> o2 = 12;
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m5::stl::optional<int> o3;
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o1 = o1;
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EXPECT_TRUE(*o1 == 42);
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o1 = o2;
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EXPECT_TRUE(*o1 == 12);
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o1 = o3;
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EXPECT_TRUE(!o1);
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o1 = 42;
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EXPECT_TRUE(*o1 == 42);
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o1 = m5::stl::nullopt;
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EXPECT_TRUE(!o1);
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o1 = std::move(o2);
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EXPECT_TRUE(*o1 == 12);
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m5::stl::optional<short> o4 = 42;
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o1 = o4;
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EXPECT_TRUE(*o1 == 42);
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o1 = std::move(o4);
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EXPECT_TRUE(*o1 == 42);
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}
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TEST(Optional, AssignmentReference)
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{
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auto i = 42;
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auto j = 12;
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m5::stl::optional<int&> o1 = i;
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m5::stl::optional<int&> o2 = j;
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m5::stl::optional<int&> o3;
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o1 = o1;
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EXPECT_TRUE(*o1 == 42);
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EXPECT_TRUE(&*o1 == &i);
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o1 = o2;
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EXPECT_TRUE(*o1 == 12);
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o1 = o3;
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EXPECT_TRUE(!o1);
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auto k = 42;
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o1 = k;
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EXPECT_TRUE(*o1 == 42);
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EXPECT_TRUE(*o1 == i);
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EXPECT_TRUE(*o1 == k);
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EXPECT_TRUE(&*o1 != &i);
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EXPECT_TRUE(&*o1 == &k);
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k = 12;
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EXPECT_TRUE(*o1 == 12);
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o1 = m5::stl::nullopt;
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EXPECT_TRUE(!o1);
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o1 = std::move(o2);
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EXPECT_TRUE(*o1 == 12);
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}
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