| //===- unittests/ErrorOrTest.cpp - ErrorOr.h tests ------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #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 errc::invalid_argument; } |
| |
| TEST(ErrorOr, SimpleValue) { |
| ErrorOr<int> a = t1(); |
| // 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(a.getError(), errc::invalid_argument); |
| #ifdef EXPECT_DEBUG_DEATH |
| EXPECT_DEBUG_DEATH(*a, "Cannot get value when an error exists"); |
| #endif |
| } |
| |
| ErrorOr<std::unique_ptr<int> > t3() { |
| return std::unique_ptr<int>(new int(3)); |
| } |
| |
| TEST(ErrorOr, Types) { |
| int x; |
| ErrorOr<int&> a(x); |
| *a = 42; |
| EXPECT_EQ(42, x); |
| |
| // Move only types. |
| EXPECT_EQ(3, **t3()); |
| } |
| |
| struct B {}; |
| struct D : B {}; |
| |
| 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); |
| } |
| } // end anon namespace |