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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
//===- VirtualOutputBackendTest.cpp - Tests for vfs::OutputBackend --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/VirtualOutputBackend.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::vfs;
namespace {
struct MockOutputBackendData {
int Cloned = 0;
int FilesCreated = 0;
std::optional<OutputConfig> LastConfig;
unique_function<Error()> FileCreator;
};
struct MockOutputBackend final : public OutputBackend {
struct MockFile final : public OutputFileImpl {
Error keep() override { return Error::success(); }
Error discard() override { return Error::success(); }
raw_pwrite_stream &getOS() override { return OS; }
raw_null_ostream OS;
};
IntrusiveRefCntPtr<OutputBackend> cloneImpl() const override {
++Data.Cloned;
return const_cast<MockOutputBackend *>(this);
}
Expected<std::unique_ptr<OutputFileImpl>>
createFileImpl(StringRef, std::optional<OutputConfig> Config) override {
++Data.FilesCreated;
Data.LastConfig = Config;
if (Data.FileCreator)
return Data.FileCreator();
return std::make_unique<MockFile>();
}
Expected<OutputFile>
createAutoDiscardFile(const Twine &OutputPath,
std::optional<OutputConfig> Config = std::nullopt) {
return consumeDiscardOnDestroy(createFile(OutputPath, Config));
}
MockOutputBackend(MockOutputBackendData &Data) : Data(Data) {}
MockOutputBackendData &Data;
};
static IntrusiveRefCntPtr<MockOutputBackend>
createMockBackend(MockOutputBackendData &Data) {
return makeIntrusiveRefCnt<MockOutputBackend>(Data);
}
static Error createCustomError() {
return createStringError(inconvertibleErrorCode(), "custom error");
}
TEST(VirtualOutputBackendTest, construct) {
MockOutputBackendData Data;
auto B = createMockBackend(Data);
EXPECT_EQ(0, Data.Cloned);
EXPECT_EQ(0, Data.FilesCreated);
}
TEST(VirtualOutputBackendTest, clone) {
MockOutputBackendData Data;
auto Backend = createMockBackend(Data);
auto Clone = Backend->clone();
EXPECT_EQ(1, Data.Cloned);
// Confirm the clone matches what the mock's cloneImpl() does.
EXPECT_EQ(Backend.get(), Clone.get());
// Make another clone.
Backend->clone();
EXPECT_EQ(2, Data.Cloned);
}
TEST(VirtualOutputBackendTest, createFile) {
MockOutputBackendData Data;
auto Backend = createMockBackend(Data);
StringRef FilePath = "dir/file";
OutputFile F;
EXPECT_THAT_ERROR(Backend->createFile(Twine(FilePath)).moveInto(F),
Succeeded());
EXPECT_EQ(1, Data.FilesCreated);
EXPECT_EQ(FilePath, F.getPath());
EXPECT_EQ(std::nullopt, Data.LastConfig);
// Confirm OutputBackend has not installed a discard handler.
#if GTEST_HAS_DEATH_TEST
EXPECT_DEATH(F = OutputFile(), "output not closed");
#endif
consumeError(F.discard());
// Create more files and specify configs.
for (OutputConfig Config : {
OutputConfig(),
OutputConfig().setNoAtomicWrite().setDiscardOnSignal(),
OutputConfig().setAtomicWrite().setNoDiscardOnSignal(),
OutputConfig().setText(),
OutputConfig().setTextWithCRLF(),
}) {
int CreatedAlready = Data.FilesCreated;
EXPECT_THAT_ERROR(
Backend->createAutoDiscardFile(Twine(FilePath), Config).takeError(),
Succeeded());
EXPECT_EQ(Config, Data.LastConfig);
EXPECT_EQ(1 + CreatedAlready, Data.FilesCreated);
}
}
TEST(VirtualOutputBackendTest, createFileInvalidConfigCRLF) {
MockOutputBackendData Data;
auto Backend = createMockBackend(Data);
// Check that invalid configs don't make it to the backend.
EXPECT_THAT_ERROR(
Backend
->createAutoDiscardFile(Twine("dir/file"), OutputConfig().setCRLF())
.takeError(),
FailedWithMessage("dir/file: invalid config: {CRLF}"));
EXPECT_EQ(0, Data.FilesCreated);
}
TEST(VirtualOutputBackendTest, createFileError) {
MockOutputBackendData Data;
Data.FileCreator = createCustomError;
auto Backend = createMockBackend(Data);
// Check that invalid configs don't make it to the backend.
EXPECT_THAT_ERROR(
Backend->createAutoDiscardFile(Twine("dir/file")).takeError(),
FailedWithMessage("custom error"));
EXPECT_EQ(1, Data.FilesCreated);
}
} // end namespace
|
