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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
//===- unittest/Support/YAMLParserTest ------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/YAMLParser.h"
#include "gtest/gtest.h"
namespace llvm {
static void SuppressDiagnosticsOutput(const SMDiagnostic &, void *) {
// Prevent SourceMgr from writing errors to stderr
// to reduce noise in unit test runs.
}
// Assumes Ctx is an SMDiagnostic where Diag can be stored.
static void CollectDiagnosticsOutput(const SMDiagnostic &Diag, void *Ctx) {
SMDiagnostic* DiagOut = static_cast<SMDiagnostic*>(Ctx);
*DiagOut = Diag;
}
// Checks that the given input gives a parse error. Makes sure that an error
// text is available and the parse fails.
static void ExpectParseError(StringRef Message, StringRef Input) {
SourceMgr SM;
yaml::Stream Stream(Input, SM);
SM.setDiagHandler(SuppressDiagnosticsOutput);
EXPECT_FALSE(Stream.validate()) << Message << ": " << Input;
EXPECT_TRUE(Stream.failed()) << Message << ": " << Input;
}
// Checks that the given input can be parsed without error.
static void ExpectParseSuccess(StringRef Message, StringRef Input) {
SourceMgr SM;
yaml::Stream Stream(Input, SM);
EXPECT_TRUE(Stream.validate()) << Message << ": " << Input;
}
TEST(YAMLParser, ParsesEmptyArray) {
ExpectParseSuccess("Empty array", "[]");
}
TEST(YAMLParser, FailsIfNotClosingArray) {
ExpectParseError("Not closing array", "[");
ExpectParseError("Not closing array", " [ ");
ExpectParseError("Not closing array", " [x");
}
TEST(YAMLParser, ParsesEmptyArrayWithWhitespace) {
ExpectParseSuccess("Array with spaces", " [ ] ");
ExpectParseSuccess("All whitespaces", "\t\r\n[\t\n \t\r ]\t\r \n\n");
}
TEST(YAMLParser, ParsesEmptyObject) {
ExpectParseSuccess("Empty object", "[{}]");
}
TEST(YAMLParser, ParsesObject) {
ExpectParseSuccess("Object with an entry", "[{\"a\":\"/b\"}]");
}
TEST(YAMLParser, ParsesMultipleKeyValuePairsInObject) {
ExpectParseSuccess("Multiple key, value pairs",
"[{\"a\":\"/b\",\"c\":\"d\",\"e\":\"f\"}]");
}
TEST(YAMLParser, FailsIfNotClosingObject) {
ExpectParseError("Missing close on empty", "[{]");
ExpectParseError("Missing close after pair", "[{\"a\":\"b\"]");
}
TEST(YAMLParser, FailsIfMissingColon) {
ExpectParseError("Missing colon between key and value", "[{\"a\"\"/b\"}]");
ExpectParseError("Missing colon between key and value", "[{\"a\" \"b\"}]");
}
TEST(YAMLParser, FailsOnMissingQuote) {
ExpectParseError("Missing open quote", "[{a\":\"b\"}]");
ExpectParseError("Missing closing quote", "[{\"a\":\"b}]");
}
TEST(YAMLParser, ParsesEscapedQuotes) {
ExpectParseSuccess("Parses escaped string in key and value",
"[{\"a\":\"\\\"b\\\" \\\" \\\"\"}]");
}
TEST(YAMLParser, ParsesEmptyString) {
ExpectParseSuccess("Parses empty string in value", "[{\"a\":\"\"}]");
}
TEST(YAMLParser, ParsesMultipleObjects) {
ExpectParseSuccess(
"Multiple objects in array",
"["
" { \"a\" : \"b\" },"
" { \"a\" : \"b\" },"
" { \"a\" : \"b\" }"
"]");
}
TEST(YAMLParser, FailsOnMissingComma) {
ExpectParseError(
"Missing comma",
"["
" { \"a\" : \"b\" }"
" { \"a\" : \"b\" }"
"]");
}
TEST(YAMLParser, ParsesSpacesInBetweenTokens) {
ExpectParseSuccess(
"Various whitespace between tokens",
" \t \n\n \r [ \t \n\n \r"
" \t \n\n \r { \t \n\n \r\"a\"\t \n\n \r :"
" \t \n\n \r \"b\"\t \n\n \r } \t \n\n \r,\t \n\n \r"
" \t \n\n \r { \t \n\n \r\"a\"\t \n\n \r :"
" \t \n\n \r \"b\"\t \n\n \r } \t \n\n \r]\t \n\n \r");
}
TEST(YAMLParser, ParsesArrayOfArrays) {
ExpectParseSuccess("Array of arrays", "[[]]");
}
TEST(YAMLParser, HandlesEndOfFileGracefully) {
ExpectParseError("In string starting with EOF", "[\"");
ExpectParseError("In string hitting EOF", "[\" ");
ExpectParseError("In string escaping EOF", "[\" \\");
ExpectParseError("In array starting with EOF", "[");
ExpectParseError("In array element starting with EOF", "[[], ");
ExpectParseError("In array hitting EOF", "[[] ");
ExpectParseError("In array hitting EOF", "[[]");
ExpectParseError("In object hitting EOF", "{\"\"");
}
// Checks that the given string can be parsed into an identical string inside
// of an array.
static void ExpectCanParseString(StringRef String) {
std::string StringInArray = (llvm::Twine("[\"") + String + "\"]").str();
SourceMgr SM;
yaml::Stream Stream(StringInArray, SM);
yaml::SequenceNode *ParsedSequence
= dyn_cast<yaml::SequenceNode>(Stream.begin()->getRoot());
StringRef ParsedString
= dyn_cast<yaml::ScalarNode>(
static_cast<yaml::Node*>(ParsedSequence->begin()))->getRawValue();
ParsedString = ParsedString.substr(1, ParsedString.size() - 2);
EXPECT_EQ(String, ParsedString.str());
}
// Checks that parsing the given string inside an array fails.
static void ExpectCannotParseString(StringRef String) {
std::string StringInArray = (llvm::Twine("[\"") + String + "\"]").str();
ExpectParseError((Twine("When parsing string \"") + String + "\"").str(),
StringInArray);
}
TEST(YAMLParser, ParsesStrings) {
ExpectCanParseString("");
ExpectCannotParseString("\\");
ExpectCannotParseString("\"");
ExpectCanParseString(" ");
ExpectCanParseString("\\ ");
ExpectCanParseString("\\\"");
ExpectCannotParseString("\"\\");
ExpectCannotParseString(" \\");
ExpectCanParseString("\\\\");
ExpectCannotParseString("\\\\\\");
ExpectCanParseString("\\\\\\\\");
ExpectCanParseString("\\\" ");
ExpectCannotParseString("\\\\\" ");
ExpectCanParseString("\\\\\\\" ");
ExpectCanParseString(" \\\\ \\\" \\\\\\\" ");
}
TEST(YAMLParser, WorksWithIteratorAlgorithms) {
SourceMgr SM;
yaml::Stream Stream("[\"1\", \"2\", \"3\", \"4\", \"5\", \"6\"]", SM);
yaml::SequenceNode *Array
= dyn_cast<yaml::SequenceNode>(Stream.begin()->getRoot());
EXPECT_EQ(6, std::distance(Array->begin(), Array->end()));
}
TEST(YAMLParser, DefaultDiagnosticFilename) {
SourceMgr SM;
SMDiagnostic GeneratedDiag;
SM.setDiagHandler(CollectDiagnosticsOutput, &GeneratedDiag);
// When we construct a YAML stream over an unnamed string,
// the filename is hard-coded as "YAML".
yaml::Stream UnnamedStream("[]", SM);
UnnamedStream.printError(UnnamedStream.begin()->getRoot(), "Hello, World!");
EXPECT_EQ("YAML", GeneratedDiag.getFilename());
}
TEST(YAMLParser, DiagnosticFilenameFromBufferID) {
SourceMgr SM;
SMDiagnostic GeneratedDiag;
SM.setDiagHandler(CollectDiagnosticsOutput, &GeneratedDiag);
// When we construct a YAML stream over a named buffer,
// we get its ID as filename in diagnostics.
MemoryBuffer* Buffer = MemoryBuffer::getMemBuffer("[]", "buffername.yaml");
yaml::Stream Stream(Buffer, SM);
Stream.printError(Stream.begin()->getRoot(), "Hello, World!");
EXPECT_EQ("buffername.yaml", GeneratedDiag.getFilename());
}
} // end namespace llvm
|
