mirror of https://github.com/procxx/kepka.git
103 lines
1.8 KiB
C++
103 lines
1.8 KiB
C++
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#include "catch.hpp"
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#include <mapbox/optional.hpp>
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struct dummy
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{
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dummy(int _m_1, int _m_2) : m_1(_m_1), m_2(_m_2) {}
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int m_1;
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int m_2;
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};
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TEST_CASE("optional can be instantiated with a POD type", "[optional]")
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{
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mapbox::util::optional<int> dbl_opt;
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REQUIRE(!dbl_opt);
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dbl_opt = 3;
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REQUIRE(dbl_opt);
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REQUIRE(dbl_opt.get() == 3);
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REQUIRE(*dbl_opt == 3);
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}
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TEST_CASE("copy c'tor", "[optional]")
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{
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mapbox::util::optional<int> dbl_opt;
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REQUIRE(!dbl_opt);
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dbl_opt = 3;
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REQUIRE(dbl_opt);
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mapbox::util::optional<int> other = dbl_opt;
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REQUIRE(other.get() == 3);
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REQUIRE(*other == 3);
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}
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TEST_CASE("const operator*, const get()", "[optional]")
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{
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const mapbox::util::optional<int> dbl_opt = 3;
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REQUIRE(dbl_opt);
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auto pi1 = dbl_opt.get();
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auto pi2 = *dbl_opt;
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REQUIRE(pi1 == 3);
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REQUIRE(pi2 == 3);
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}
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TEST_CASE("non-const operator*, non-const get()", "[optional]")
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{
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mapbox::util::optional<int> dbl_opt = 3;
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REQUIRE(dbl_opt);
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auto pi1 = dbl_opt.get();
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auto pi2 = *dbl_opt;
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REQUIRE(pi1 == 3);
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REQUIRE(pi2 == 3);
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}
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TEST_CASE("emplace initialization, reset", "[optional]")
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{
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mapbox::util::optional<dummy> dummy_opt;
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REQUIRE(!dummy_opt);
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// rvalues, baby!
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dummy_opt.emplace(1, 2);
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REQUIRE(dummy_opt);
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REQUIRE(dummy_opt.get().m_1 == 1);
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REQUIRE((*dummy_opt).m_2 == 2);
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dummy_opt.reset();
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REQUIRE(!dummy_opt);
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}
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TEST_CASE("assignment", "[optional]")
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{
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mapbox::util::optional<int> a;
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mapbox::util::optional<int> b;
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a = 1;
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b = 3;
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REQUIRE(a.get() == 1);
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REQUIRE(b.get() == 3);
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b = a;
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REQUIRE(a.get() == b.get());
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REQUIRE(b.get() == 1);
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}
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TEST_CASE("self assignment", "[optional]")
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{
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mapbox::util::optional<int> a;
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a = 1;
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REQUIRE(a.get() == 1);
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a = a;
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REQUIRE(a.get() == 1);
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}
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