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105 lines
2.2 KiB
C++
105 lines
2.2 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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EXPECT_TRUE(a);
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EXPECT_EQ(1, *a);
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a = t2();
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EXPECT_FALSE(a);
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EXPECT_EQ(errc::invalid_argument, a);
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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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EXPECT_FALSE(ErrorOr<void>(errc::broken_pipe));
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EXPECT_TRUE(ErrorOr<void>(errc::success));
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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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struct InvalidArgError {
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InvalidArgError() {}
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InvalidArgError(std::string S) : ArgName(S) {}
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std::string ArgName;
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};
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namespace llvm {
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template<>
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struct ErrorOrUserDataTraits<InvalidArgError> : true_type {
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static error_code error() {
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return make_error_code(errc::invalid_argument);
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}
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};
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} // end namespace llvm
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ErrorOr<int> t4() {
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return InvalidArgError("adena");
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}
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ErrorOr<void> t5() {
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return InvalidArgError("pie");
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}
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namespace {
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TEST(ErrorOr, UserErrorData) {
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ErrorOr<int> a = t4();
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EXPECT_EQ(errc::invalid_argument, a);
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EXPECT_EQ("adena", t4().getError<InvalidArgError>().ArgName);
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ErrorOr<void> b = t5();
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EXPECT_EQ(errc::invalid_argument, b);
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EXPECT_EQ("pie", b.getError<InvalidArgError>().ArgName);
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}
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} // end anon namespace
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