mirror of https://github.com/procxx/kepka.git
53 lines
839 B
C++
53 lines
839 B
C++
#include "catch.hpp"
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#include <mapbox/variant.hpp>
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#include <mapbox/variant_io.hpp>
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// https://github.com/mapbox/variant/issues/21
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static int count;
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struct t1
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{
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int value;
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t1(t1 const& rhs)
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: value(rhs.value)
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{
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++count;
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}
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t1(int v) : value(v)
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{
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++count;
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}
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~t1()
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{
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--count;
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}
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};
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struct t2
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{
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int value;
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t2(int v) : value(v)
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{ // constructor fails
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throw std::runtime_error("fail");
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}
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};
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TEST_CASE("set() works cleanly even if the constructor throws ", "[variant]")
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{
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using variant_type = mapbox::util::variant<t1, t2>;
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count = 0;
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{
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t1 obj{42};
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variant_type v = obj;
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REQUIRE(v.is<t1>());
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REQUIRE(v.get<t1>().value == 42);
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REQUIRE_THROWS(v.set<t2>(13));
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}
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REQUIRE(count == 0);
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}
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