1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
//===- 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 "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();
EXPECT_TRUE(a);
EXPECT_EQ(1, *a);
a = t2();
EXPECT_FALSE(a);
EXPECT_EQ(errc::invalid_argument, a);
#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;
ErrorOr<int&> a(x);
*a = 42;
EXPECT_EQ(42, x);
EXPECT_FALSE(ErrorOr<void>(errc::broken_pipe));
EXPECT_TRUE(ErrorOr<void>(errc::success));
#if LLVM_HAS_CXX11_STDLIB
// Move only types.
EXPECT_EQ(3, **t3());
#endif
}
struct B {};
struct D : B {};
TEST(ErrorOr, Covariant) {
ErrorOr<B*> b(ErrorOr<D*>(0));
b = ErrorOr<D*>(0);
#if LLVM_HAS_CXX11_STDLIB
ErrorOr<std::unique_ptr<B> > b1(ErrorOr<std::unique_ptr<D> >(0));
b1 = ErrorOr<std::unique_ptr<D> >(0);
#endif
}
} // end anon namespace
struct InvalidArgError {
InvalidArgError() {}
InvalidArgError(std::string S) : ArgName(S) {}
std::string ArgName;
};
namespace llvm {
template<>
struct ErrorOrUserDataTraits<InvalidArgError> : true_type {
static error_code error() {
return make_error_code(errc::invalid_argument);
}
};
} // end namespace llvm
ErrorOr<int> t4() {
return InvalidArgError("adena");
}
ErrorOr<void> t5() {
return InvalidArgError("pie");
}
namespace {
TEST(ErrorOr, UserErrorData) {
ErrorOr<int> a = t4();
EXPECT_EQ(errc::invalid_argument, a);
EXPECT_EQ("adena", t4().getError<InvalidArgError>().ArgName);
ErrorOr<void> b = t5();
EXPECT_EQ(errc::invalid_argument, b);
EXPECT_EQ("pie", b.getError<InvalidArgError>().ArgName);
}
} // end anon namespace
|
