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#include <specs/specs.h>
using namespace bandit::Matchers;
SPEC_BEGIN(Matchers::ThrowException)
describe("throw_exception", []{
describe("when no exception is specified", [&]{
std::exception exception;
std::function<void()> exception_block = [&]{ throw exception; };
describe("when the block throws an exception", [&]{
it("must pass a positive match", [&]{
exception_block must throw_exception;
});
it("must reject a negative match", [&]{
AssertThrows(MatcherException, [&]{ exception_block must_not throw_exception; }());
});
});
describe("when the block does not throw an exception", [&]{
std::function<void()> quiet_block = [&]{};
it("must pass a negative match", [&]{
quiet_block must_not throw_exception;
});
it("must reject a positive match", [&]{
AssertThrows(std::exception, [&]{ quiet_block must throw_exception; }());
});
});
});
describe("with an exception class specified", [&]{
std::logic_error expected_exception("logic_error");
describe("when the block throws the expected exception", [&]{
std::function<void()> exception_block = [&]{ throw expected_exception; };
it("must pass a positive match", [&]{
exception_block must throw_exception.operator()<decltype(expected_exception)>();
});
it("must reject a negative match", [&]{
AssertThrows(std::exception, [&]{ exception_block must_not throw_exception.operator()<decltype(expected_exception)>(); }());
});
});
// TODO: Because C++ lacks reflection, there's no way to implement
// subclass-checking. I'm leaving these tests here for when the
// language has evolved sufficiently.
xdescribe("when the block throws a sublass of the specified exception", [&]{
std::function<void()> subclass_block = [&]{ throw std::invalid_argument("invalid argument"); };
describe("when subclasses are expected", [&]{
it("must pass a positive match", [&]{
subclass_block must throw_exception.operator()<std::logic_error>().or_subclass();
});
it("must reject a negative match", [&]{
AssertThrows(std::exception, [&]{ subclass_block must_not throw_exception.operator()<std::logic_error>().or_subclass(); }());
});
});
describe("when subclasses are not expected", [&]{
it("must pass a negative match", [&]{
subclass_block must_not throw_exception.operator()<std::logic_error>();
});
it("must reject a positive match", [&]{
AssertThrows(std::exception, [&]{ subclass_block must throw_exception.operator()<std::logic_error>(); }());
});
});
});
describe("when the block throws an unrelated exception", [&]{
std::function<void()> unrelated_block = [&]{ throw std::range_error("range error"); };
it("must pass a negative match", [&]{
unrelated_block must_not throw_exception.operator()<decltype(expected_exception)>();
});
it("must reject a positive match", [&]{
AssertThrows(std::exception, [&]{ unrelated_block must throw_exception.operator()<decltype(expected_exception)>(); }());
});
});
describe("when the block does not throw an exception", [&]{
std::function<void()> quiet_block = [&]{};
it("must pass a negative match", [&]{
quiet_block must_not throw_exception.operator()<decltype(expected_exception)>();
});
it("must reject a positive match", [&]{
AssertThrows(std::exception, [&]{ quiet_block must throw_exception.operator()<decltype(expected_exception)>(); }());
});
});
});
});
SPEC_END
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