49 lines
750 B
C++
49 lines
750 B
C++
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#include "catch.hpp"
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#include "variant.hpp"
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#include "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(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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variant_type v{42};
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REQUIRE(v.is<t1>());
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REQUIRE(v.get<t1>().value == 42);
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REQUIRE_THROWS({
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v.set<t2>(13);
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});
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}
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REQUIRE(count == 0);
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}
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