//===----------------------------------------------------------------------===//
#include "llvm/Support/ErrorOr.h"
-
+#include "llvm/Support/Errc.h"
#include "gtest/gtest.h"
-
#include <memory>
using namespace llvm;
namespace {
ErrorOr<int> t1() {return 1;}
-ErrorOr<int> t2() {return make_error_code(errc::invalid_argument);}
+ErrorOr<int> t2() { return errc::invalid_argument; }
TEST(ErrorOr, SimpleValue) {
ErrorOr<int> a = t1();
- EXPECT_TRUE(a);
+ // FIXME: This is probably a bug in gtest. EXPECT_TRUE should expand to
+ // include the !! to make it friendly to explicit bool operators.
+ EXPECT_TRUE(!!a);
EXPECT_EQ(1, *a);
+ ErrorOr<int> b = a;
+ EXPECT_EQ(1, *b);
+
a = t2();
EXPECT_FALSE(a);
- EXPECT_EQ(errc::invalid_argument, a);
+ EXPECT_EQ(a.getError(), errc::invalid_argument);
+#ifdef EXPECT_DEBUG_DEATH
EXPECT_DEBUG_DEATH(*a, "Cannot get value when an error exists");
+#endif
}
-#if LLVM_HAS_CXX11_STDLIB
ErrorOr<std::unique_ptr<int> > t3() {
return std::unique_ptr<int>(new int(3));
}
-#endif
TEST(ErrorOr, Types) {
int x;
*a = 42;
EXPECT_EQ(42, x);
-#if LLVM_HAS_CXX11_STDLIB
// Move only types.
EXPECT_EQ(3, **t3());
-#endif
}
-} // end anon namespace
-struct InvalidArgError {
- InvalidArgError() {}
- InvalidArgError(std::string S) : ArgName(S) {}
- std::string ArgName;
-};
-
-#if LLVM_HAS_CXX11_STDLIB
-namespace llvm {
-template<>
-struct ErrorOrUserDataTraits<InvalidArgError> : std::true_type {
- static error_code error() {
- return make_error_code(errc::invalid_argument);
- }
-};
-} // end namespace lld
-
-ErrorOr<int> t4() {
- return InvalidArgError("adena");
-}
+struct B {};
+struct D : B {};
-namespace {
-TEST(ErrorOr, UserErrorData) {
- ErrorOr<int> a = t4();
- EXPECT_EQ(errc::invalid_argument, a);
- EXPECT_EQ("adena", t4().getError<InvalidArgError>().ArgName);
+TEST(ErrorOr, Covariant) {
+ ErrorOr<B*> b(ErrorOr<D*>(nullptr));
+ b = ErrorOr<D*>(nullptr);
+
+ ErrorOr<std::unique_ptr<B> > b1(ErrorOr<std::unique_ptr<D> >(nullptr));
+ b1 = ErrorOr<std::unique_ptr<D> >(nullptr);
+
+ ErrorOr<std::unique_ptr<int>> b2(ErrorOr<int *>(nullptr));
+ ErrorOr<int *> b3(nullptr);
+ ErrorOr<std::unique_ptr<int>> b4(b3);
}
+
+// ErrorOr<int*> x(nullptr);
+// ErrorOr<std::unique_ptr<int>> y = x; // invalid conversion
+static_assert(
+ !std::is_convertible<const ErrorOr<int *> &,
+ ErrorOr<std::unique_ptr<int>>>::value,
+ "do not invoke explicit ctors in implicit conversion from lvalue");
+
+// ErrorOr<std::unique_ptr<int>> y = ErrorOr<int*>(nullptr); // invalid
+// // conversion
+static_assert(
+ !std::is_convertible<ErrorOr<int *> &&,
+ ErrorOr<std::unique_ptr<int>>>::value,
+ "do not invoke explicit ctors in implicit conversion from rvalue");
+
+// ErrorOr<int*> x(nullptr);
+// ErrorOr<std::unique_ptr<int>> y;
+// y = x; // invalid conversion
+static_assert(!std::is_assignable<ErrorOr<std::unique_ptr<int>>,
+ const ErrorOr<int *> &>::value,
+ "do not invoke explicit ctors in assignment");
+
+// ErrorOr<std::unique_ptr<int>> x;
+// x = ErrorOr<int*>(nullptr); // invalid conversion
+static_assert(!std::is_assignable<ErrorOr<std::unique_ptr<int>>,
+ ErrorOr<int *> &&>::value,
+ "do not invoke explicit ctors in assignment");
} // end anon namespace
-#endif