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70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
//===- unittests/ErrorOrTest.cpp - ErrorOr.h tests ------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ErrorOr.h"
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#include "gtest/gtest.h"
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#include <memory>
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using namespace llvm;
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namespace {
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ErrorOr<int> t1() {return 1;}
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ErrorOr<int> t2() { return errc::invalid_argument; }
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TEST(ErrorOr, SimpleValue) {
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ErrorOr<int> a = t1();
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// FIXME: This is probably a bug in gtest. EXPECT_TRUE should expand to
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// include the !! to make it friendly to explicit bool operators.
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EXPECT_TRUE(!!a);
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EXPECT_EQ(1, *a);
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ErrorOr<int> b = a;
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EXPECT_EQ(1, *b);
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a = t2();
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EXPECT_FALSE(a);
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EXPECT_EQ(errc::invalid_argument, a.getError());
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#ifdef EXPECT_DEBUG_DEATH
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EXPECT_DEBUG_DEATH(*a, "Cannot get value when an error exists");
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#endif
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}
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#if LLVM_HAS_CXX11_STDLIB
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ErrorOr<std::unique_ptr<int> > t3() {
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return std::unique_ptr<int>(new int(3));
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}
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#endif
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TEST(ErrorOr, Types) {
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int x;
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ErrorOr<int&> a(x);
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*a = 42;
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EXPECT_EQ(42, x);
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#if LLVM_HAS_CXX11_STDLIB
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// Move only types.
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EXPECT_EQ(3, **t3());
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#endif
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}
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struct B {};
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struct D : B {};
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TEST(ErrorOr, Covariant) {
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ErrorOr<B*> b(ErrorOr<D*>(0));
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b = ErrorOr<D*>(0);
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#if LLVM_HAS_CXX11_STDLIB
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ErrorOr<std::unique_ptr<B> > b1(ErrorOr<std::unique_ptr<D> >(0));
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b1 = ErrorOr<std::unique_ptr<D> >(0);
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#endif
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}
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} // end anon namespace
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