demangle(typeid(IntException)).toStdString();
const static std::string kIntClassName = demangle(typeid(int)).toStdString();
-// Tests that when we call throwException, the proper type is thrown (derived)
+template <typename T>
+T& from_eptr(std::exception_ptr& eptr) {
+ try {
+ std::rethrow_exception(eptr);
+ } catch (T& e) {
+ return e;
+ } catch (...) {
+ throw std::logic_error("impossible");
+ }
+}
+
+// Tests that when we call throw_exception, the proper type is thrown (derived)
TEST(ExceptionWrapper, throw_test) {
std::runtime_error e("payload");
auto ew = make_exception_wrapper<std::runtime_error>(e);
container.push_back(ew);
try {
- container[0].throwException();
+ container[0].throw_exception();
} catch (std::runtime_error& err) {
std::string expected = "payload";
std::string actual = err.what();
EXPECT_EQ(ew.class_name(), kRuntimeErrorClassName);
}
-TEST(ExceptionWrapper, equals) {
- std::runtime_error e("payload");
- auto ew1 = make_exception_wrapper<std::runtime_error>(e);
- auto ew2 = ew1;
- EXPECT_EQ(ew1, ew2);
-
- auto ew3 = try_and_catch<std::exception>([&]() {
- throw std::runtime_error("payload");
- });
- auto ew4 = try_and_catch<std::exception>([&]() {
- ew3.throwException();
- });
- EXPECT_EQ(ew3, ew4);
-}
-
-TEST(ExceptionWrapper, not_equals) {
- std::runtime_error e1("payload");
- std::runtime_error e2("payload");
- auto ew1 = make_exception_wrapper<std::runtime_error>(e1);
- auto ew2 = make_exception_wrapper<std::runtime_error>(e2);
- EXPECT_NE(ew1, ew2);
-
- auto ew3 = make_exception_wrapper<std::runtime_error>(e1);
- auto ew4 = make_exception_wrapper<std::runtime_error>(e1);
- EXPECT_NE(ew3, ew4);
-
- auto ew5 = try_and_catch<std::exception>([&]() {
- throw e1;
- });
- auto ew6 = try_and_catch<std::exception>([&]() {
- throw e1;
- });
- EXPECT_NE(ew5, ew6);
-}
-
TEST(ExceptionWrapper, try_and_catch_test) {
std::string expected = "payload";
throw std::runtime_error(expected);
});
EXPECT_TRUE(bool(ew));
- EXPECT_TRUE(ew.getCopied());
EXPECT_EQ(ew.what(), kRuntimeErrorClassName + ": payload");
EXPECT_EQ(ew.class_name(), kRuntimeErrorClassName);
auto rep = ew.is_compatible_with<std::runtime_error>();
});
EXPECT_TRUE(bool(ew2));
// We are catching a std::exception, not std::runtime_error.
- EXPECT_FALSE(ew2.getCopied());
// But, we can still get the actual type if we want it.
rep = ew2.is_compatible_with<std::runtime_error>();
EXPECT_TRUE(rep);
EXPECT_TRUE(bool(ew2));
EXPECT_EQ(ew2.what(), kIntExceptionClassName + ": int == 23");
EXPECT_EQ(ew2.class_name(), kIntExceptionClassName);
- EXPECT_TRUE(ew2.with_exception([&](AbstractIntException& ie) {
+ bool res = ew2.with_exception([&](AbstractIntException& ie) {
EXPECT_EQ(ie.getInt(), expected);
EXPECT_TRUE(dynamic_cast<IntException*>(&ie));
- }));
+ });
+ EXPECT_TRUE(res);
// Test with const this. If this compiles and does not crash due to
// infinite loop when it runs, it succeeds.
EXPECT_FALSE(eptr);
}
+TEST(ExceptionWrapper, with_exception_ptr_empty) {
+ auto ew = exception_wrapper(std::exception_ptr());
+ EXPECT_EQ(exception_wrapper::none(), ew.type());
+ EXPECT_FALSE(bool(ew));
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_FALSE(ew.has_exception_ptr());
+ EXPECT_EQ(nullptr, ew.to_exception_ptr());
+ EXPECT_FALSE(ew.has_exception_ptr());
+ EXPECT_EQ("", ew.class_name());
+ EXPECT_EQ("", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+ EXPECT_DEATH(ew.throw_exception(), "empty folly::exception_wrapper");
+}
+
+TEST(ExceptionWrapper, with_shared_ptr_test) {
+ auto ew = exception_wrapper(std::runtime_error("foo"));
+ EXPECT_TRUE(bool(ew));
+ EXPECT_EQ(typeid(std::runtime_error), ew.type());
+ EXPECT_NE(nullptr, ew.get_exception());
+ EXPECT_NE(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_FALSE(ew.has_exception_ptr());
+ EXPECT_NE(nullptr, ew.to_exception_ptr());
+ EXPECT_TRUE(ew.has_exception_ptr());
+ EXPECT_EQ("std::runtime_error", ew.class_name());
+ EXPECT_EQ("std::runtime_error: foo", ew.what());
+ EXPECT_TRUE(ew.is_compatible_with<std::exception>());
+ EXPECT_TRUE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+ EXPECT_THROW(ew.throw_exception(), std::runtime_error);
+
+ exception_wrapper(std::move(ew));
+ EXPECT_FALSE(bool(ew));
+ EXPECT_EQ(exception_wrapper::none(), ew.type());
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_EQ(nullptr, ew.to_exception_ptr());
+ EXPECT_EQ("", ew.class_name());
+ EXPECT_EQ("", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+}
+
+TEST(ExceptionWrapper, with_exception_ptr_exn_test) {
+ auto ep = std::make_exception_ptr(std::runtime_error("foo"));
+ auto ew = exception_wrapper(ep, from_eptr<std::runtime_error>(ep));
+ EXPECT_TRUE(bool(ew));
+ EXPECT_EQ(typeid(std::runtime_error), ew.type());
+ EXPECT_NE(nullptr, ew.get_exception());
+ EXPECT_NE(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_TRUE(ew.has_exception_ptr());
+ EXPECT_EQ(ep, ew.to_exception_ptr());
+ EXPECT_TRUE(ew.has_exception_ptr());
+ EXPECT_EQ("std::runtime_error", ew.class_name());
+ EXPECT_EQ("std::runtime_error: foo", ew.what());
+ EXPECT_TRUE(ew.is_compatible_with<std::exception>());
+ EXPECT_TRUE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+ EXPECT_THROW(ew.throw_exception(), std::runtime_error);
+
+ exception_wrapper(std::move(ew));
+ EXPECT_FALSE(bool(ew));
+ EXPECT_EQ(exception_wrapper::none(), ew.type());
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_EQ(nullptr, ew.to_exception_ptr());
+ EXPECT_EQ("", ew.class_name());
+ EXPECT_EQ("", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+}
+
+TEST(ExceptionWrapper, with_exception_ptr_any_test) {
+ auto ep = std::make_exception_ptr<int>(12);
+ auto ew = exception_wrapper(ep, from_eptr<int>(ep));
+ EXPECT_TRUE(bool(ew));
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_NE(nullptr, ew.get_exception<int>());
+ EXPECT_TRUE(ew.has_exception_ptr());
+ EXPECT_EQ(ep, ew.to_exception_ptr());
+ EXPECT_TRUE(ew.has_exception_ptr());
+ EXPECT_EQ("int", ew.class_name());
+ EXPECT_EQ("int", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_TRUE(ew.is_compatible_with<int>());
+ EXPECT_THROW(ew.throw_exception(), int);
+
+ exception_wrapper(std::move(ew));
+ EXPECT_FALSE(bool(ew));
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_EQ(nullptr, ew.to_exception_ptr());
+ EXPECT_FALSE(ew.has_exception_ptr());
+ EXPECT_EQ("", ew.class_name());
+ EXPECT_EQ("", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+}
+
+TEST(ExceptionWrapper, with_non_std_exception_test) {
+ auto ew = exception_wrapper(folly::in_place, 42);
+ EXPECT_TRUE(bool(ew));
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_NE(nullptr, ew.get_exception<int>());
+ EXPECT_FALSE(ew.has_exception_ptr());
+ EXPECT_EQ("int", ew.class_name());
+ EXPECT_EQ("int", ew.what());
+ EXPECT_NE(nullptr, ew.to_exception_ptr());
+ EXPECT_TRUE(ew.has_exception_ptr());
+ EXPECT_EQ("int", ew.class_name());
+ EXPECT_EQ("int", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_TRUE(ew.is_compatible_with<int>());
+ EXPECT_THROW(ew.throw_exception(), int);
+
+ exception_wrapper(std::move(ew));
+ EXPECT_FALSE(bool(ew));
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_EQ(nullptr, ew.to_exception_ptr());
+ EXPECT_FALSE(ew.has_exception_ptr());
+ EXPECT_EQ("", ew.class_name());
+ EXPECT_EQ("", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+}
+
+TEST(ExceptionWrapper, with_exception_ptr_any_nil_test) {
+ auto ep = std::make_exception_ptr<int>(12);
+ auto ew = exception_wrapper(ep); // concrete type is erased
+ EXPECT_TRUE(bool(ew));
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_NE(nullptr, ew.get_exception<int>());
+ EXPECT_EQ(ep, ew.to_exception_ptr());
+ EXPECT_EQ("<unknown exception>", ew.class_name()); // because concrete type is
+ // erased
+ EXPECT_EQ("<unknown exception>", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_TRUE(ew.is_compatible_with<int>());
+ EXPECT_THROW(ew.throw_exception(), int);
+
+ exception_wrapper(std::move(ew));
+ EXPECT_FALSE(bool(ew));
+ EXPECT_EQ(nullptr, ew.get_exception());
+ EXPECT_EQ(nullptr, ew.get_exception<std::exception>());
+ EXPECT_EQ(nullptr, ew.get_exception<int>());
+ EXPECT_EQ(nullptr, ew.to_exception_ptr());
+ EXPECT_EQ("", ew.class_name());
+ EXPECT_EQ("", ew.what());
+ EXPECT_FALSE(ew.is_compatible_with<std::exception>());
+ EXPECT_FALSE(ew.is_compatible_with<std::runtime_error>());
+ EXPECT_FALSE(ew.is_compatible_with<int>());
+}
+
TEST(ExceptionWrapper, with_exception_deduction) {
auto ew = make_exception_wrapper<std::runtime_error>("hi");
EXPECT_TRUE(ew.with_exception([](std::runtime_error&) {}));
// non-std::exception types are supported, but the only way to
// access their value is to explicity rethrow and catch it.
try {
- ew.throwException();
+ ew.throw_exception();
} catch /* nolint */ (int& i) {
EXPECT_EQ(i, expected);
}
TEST(ExceptionWrapper, throwException_noException) {
exception_wrapper ew;
- ASSERT_DEATH(ew.throwException(), "empty folly::exception_wrapper");
+ ASSERT_DEATH(ew.throw_exception(), "empty folly::exception_wrapper");
}
namespace {
class TestException : public std::exception { };
void testEW(const exception_wrapper& ew) {
- EXPECT_THROW(ew.throwException(), TestException);
+ EXPECT_THROW(ew.throw_exception(), TestException);
}
} // namespace
testEW(e);
testEW(TestException());
}
+
+namespace {
+struct BaseException {
+ virtual ~BaseException() {}
+};
+struct DerivedException : BaseException {};
+exception_wrapper testNonStdException() {
+ try {
+ throw DerivedException{};
+ } catch (const BaseException& e) {
+ return exception_wrapper{std::current_exception(), e};
+ }
+}
+}
+
+TEST(ExceptionWrapper, base_derived_non_std_exception_test) {
+ auto ew = testNonStdException();
+ EXPECT_TRUE(ew.type() == typeid(DerivedException));
+ EXPECT_TRUE(ew.with_exception([](const DerivedException&) {}));
+}
+
+namespace {
+// Cannot be stored within an exception_wrapper
+struct BigRuntimeError : std::runtime_error {
+ using std::runtime_error::runtime_error;
+ char data_[sizeof(exception_wrapper) + 1]{};
+};
+
+struct BigNonStdError {
+ char data_[sizeof(exception_wrapper) + 1]{};
+};
+}
+
+TEST(ExceptionWrapper, handle_std_exception) {
+ auto ep = std::make_exception_ptr(std::runtime_error{"hello world"});
+ exception_wrapper const ew_eptr(ep, from_eptr<std::runtime_error>(ep));
+ exception_wrapper const ew_small(std::runtime_error{"hello world"});
+ exception_wrapper const ew_big(BigRuntimeError{"hello world"});
+
+ bool handled = false;
+ auto expect_runtime_error_yes_catch_all = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::logic_error&) { EXPECT_TRUE(false); },
+ [&](const std::runtime_error&) { handled = true; },
+ [](const std::exception&) { EXPECT_TRUE(false); },
+ [](...) { EXPECT_TRUE(false); });
+ };
+
+ expect_runtime_error_yes_catch_all(ew_eptr);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_runtime_error_yes_catch_all(ew_small);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_runtime_error_yes_catch_all(ew_big);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ auto expect_runtime_error_no_catch_all = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::logic_error&) { EXPECT_TRUE(false); },
+ [&](const std::runtime_error&) { handled = true; },
+ [](const std::exception&) { EXPECT_TRUE(false); });
+ };
+
+ expect_runtime_error_no_catch_all(ew_eptr);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_runtime_error_no_catch_all(ew_small);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_runtime_error_no_catch_all(ew_big);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ auto expect_runtime_error_catch_non_std = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::logic_error&) { EXPECT_TRUE(false); },
+ [&](const std::runtime_error&) { handled = true; },
+ [](const std::exception&) { EXPECT_TRUE(false); },
+ [](const int&) { EXPECT_TRUE(false); });
+ };
+
+ expect_runtime_error_catch_non_std(ew_eptr);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_runtime_error_catch_non_std(ew_small);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_runtime_error_catch_non_std(ew_big);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ // Test that an exception thrown from one handler is not caught by an
+ // outer handler:
+ auto expect_runtime_error_rethrow = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::logic_error&) { EXPECT_TRUE(false); },
+ [&](const std::runtime_error& e) {
+ handled = true;
+ throw e;
+ },
+ [](const std::exception&) { EXPECT_TRUE(false); });
+ };
+
+ EXPECT_THROW(expect_runtime_error_rethrow(ew_eptr), std::runtime_error);
+ EXPECT_TRUE(handled);
+ handled = false;
+ EXPECT_THROW(expect_runtime_error_rethrow(ew_small), std::runtime_error);
+ EXPECT_TRUE(handled);
+ handled = false;
+ EXPECT_THROW(expect_runtime_error_rethrow(ew_big), std::runtime_error);
+ EXPECT_TRUE(handled);
+}
+
+TEST(ExceptionWrapper, handle_std_exception_unhandled) {
+ auto ep = std::make_exception_ptr(std::exception{});
+ exception_wrapper const ew_eptr(ep, from_eptr<std::exception>(ep));
+ exception_wrapper const ew_small(std::exception{});
+
+ bool handled = false;
+ auto expect_runtime_error_yes_catch_all = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::logic_error&) { EXPECT_TRUE(false); },
+ [](const std::runtime_error&) { EXPECT_TRUE(false); },
+ [&](...) { handled = true; });
+ };
+
+ expect_runtime_error_yes_catch_all(ew_eptr);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_runtime_error_yes_catch_all(ew_small);
+ EXPECT_TRUE(handled);
+}
+
+TEST(ExceptionWrapper, handle_non_std_exception_small) {
+ auto ep = std::make_exception_ptr(42);
+ exception_wrapper const ew_eptr1(ep);
+ exception_wrapper const ew_eptr2(ep, from_eptr<int>(ep));
+ exception_wrapper const ew_small(folly::in_place, 42);
+ bool handled = false;
+
+ auto expect_int_yes_catch_all = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::exception&) { EXPECT_TRUE(false); },
+ [&](...) { handled = true; });
+ };
+
+ expect_int_yes_catch_all(ew_eptr1);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_yes_catch_all(ew_eptr2);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_yes_catch_all(ew_small);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ auto expect_int_no_catch_all = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::exception&) { EXPECT_TRUE(false); },
+ [&](const int&) { handled = true; });
+ };
+
+ expect_int_no_catch_all(ew_eptr1);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all(ew_eptr2);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all(ew_small);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ auto expect_int_no_catch_all_2 = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [&](const int&) { handled = true; },
+ [](const std::exception&) { EXPECT_TRUE(false); });
+ };
+
+ expect_int_no_catch_all_2(ew_eptr1);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all_2(ew_eptr2);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all_2(ew_small);
+ EXPECT_TRUE(handled);
+}
+
+TEST(ExceptionWrapper, handle_non_std_exception_big) {
+ auto ep = std::make_exception_ptr(BigNonStdError{});
+ exception_wrapper const ew_eptr1(ep);
+ exception_wrapper const ew_eptr2(ep, from_eptr<BigNonStdError>(ep));
+ exception_wrapper const ew_big(folly::in_place, BigNonStdError{});
+ bool handled = false;
+
+ auto expect_int_yes_catch_all = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::exception&) { EXPECT_TRUE(false); },
+ [&](...) { handled = true; });
+ };
+
+ expect_int_yes_catch_all(ew_eptr1);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_yes_catch_all(ew_eptr2);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_yes_catch_all(ew_big);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ auto expect_int_no_catch_all = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [](const std::exception&) { EXPECT_TRUE(false); },
+ [&](const BigNonStdError&) { handled = true; });
+ };
+
+ expect_int_no_catch_all(ew_eptr1);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all(ew_eptr2);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all(ew_big);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ auto expect_int_no_catch_all_2 = [&](const exception_wrapper& ew) {
+ ew.handle(
+ [&](const BigNonStdError&) { handled = true; },
+ [](const std::exception&) { EXPECT_TRUE(false); });
+ };
+
+ expect_int_no_catch_all_2(ew_eptr1);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all_2(ew_eptr2);
+ EXPECT_TRUE(handled);
+ handled = false;
+ expect_int_no_catch_all_2(ew_big);
+ EXPECT_TRUE(handled);
+ handled = false;
+
+ EXPECT_THROW(
+ expect_int_no_catch_all_2(exception_wrapper{folly::in_place, 42}), int);
+}
+
+TEST(ExceptionWrapper, handle_non_std_exception_rethrow_base_derived) {
+ auto ew = testNonStdException();
+ bool handled = false;
+ EXPECT_THROW(
+ ew.handle(
+ [&](const DerivedException& e) {
+ handled = true;
+ throw e;
+ },
+ [](const BaseException&) { EXPECT_TRUE(false); }),
+ DerivedException);
+ EXPECT_TRUE(handled);
+ handled = false;
+ EXPECT_THROW(
+ ew.handle(
+ [&](const DerivedException& e) {
+ handled = true;
+ throw e;
+ },
+ [](...) { EXPECT_TRUE(false); }),
+ DerivedException);
+ EXPECT_TRUE(handled);
+}
+
+TEST(ExceptionWrapper, self_swap_test) {
+ exception_wrapper ew(std::runtime_error("hello world"));
+ folly::swap(ew, ew);
+ EXPECT_STREQ("std::runtime_error: hello world", ew.what().c_str());
+ auto& ew2 = ew;
+ ew = std::move(ew2); // should not crash
+}
projects / folly.git / blobdiff