# YAML Test Matrix

--- &test-58MP
  Title: Flow mapping edge cases
  Tags: [ edge, flow, mapping ]

YAML

{x: :x}

Expected Events

+STR
+DOC
+MAP {}
=VAL :x
=VAL ::x
-MAP
-DOC
-STR

Expected JSON

{
  "x": ":x"
}

c-libfyaml-event

 ok

cpp-rapidyaml-event

 ok

cpp-yamlcpp-event

 ok

hs-hsyaml-event

 ok

js-yaml-event

 ok

nim-nimyaml-event

 ok

perl-pp-event

 ok

perl-refparser-event

 ok

py-ruamel-event

 ok

rust-yamlrust-event

 ok

c-libfyaml-json

 json_ok

hs-hsyaml-json

 json_ok

js-jsyaml-json

 json_ok

js-yaml-json

 json_ok

perl-pp-json

 json_ok

perl-syck-json

 json_ok

py-ruamel-json

 json_ok

raku-yamlish-json

 json_ok

perl-tiny-json

 json_diff 
{
  "{x": ":x}"
}

c-libyaml-event

 error 
+STR
+DOC
+MAP {}
=VAL :x
Parse error: did not find expected node content

dotnet-yamldotnet-event

 error 
+STR
+DOC
+MAP
=VAL :x
Unhandled exception. YamlDotNet.Core.SemanticErrorException: (Line: 1, Col: 5, Idx: 4) - (Line: 1, Col: 6, Idx: 5): While parsing a node, did not find expected node content.
   at YamlDotNet.Core.Parser.ParseNode(Boolean isBlock, Boolean isIndentlessSequence)
   at YamlDotNet.Core.Parser.ParseFlowMappingValue(Boolean isEmpty)
   at YamlDotNet.Core.Parser.StateMachine()
   at YamlDotNet.Core.Parser.MoveNext()
   at YamlDotNet.RepresentationModel.LibYamlEventStream.WriteTo(TextWriter textWriter)
   at Program.Main(String[] commandLineArguments)
Aborted (core dumped)

dotnet-yamldotnet-json

 error 
Unhandled exception. YamlDotNet.Core.SemanticErrorException: (Line: 1, Col: 5, Idx: 4) - (Line: 1, Col: 6, Idx: 5): While parsing a node, did not find expected node content.
   at YamlDotNet.Core.Parser.ParseNode(Boolean isBlock, Boolean isIndentlessSequence)
   at YamlDotNet.Core.Parser.ParseFlowMappingValue(Boolean isEmpty)
   at YamlDotNet.Core.Parser.StateMachine()
   at YamlDotNet.Core.Parser.MoveNext()
   at YamlDotNet.Core.ParserExtensions.TryConsume[T](IParser parser, T& event)
   at YamlDotNet.Serialization.NodeDeserializers.ScalarNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
   at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.DeserializeHelper(Type tKey, Type tValue, IParser parser, Func`3 nestedObjectDeserializer, IDictionary result)
   at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.Deserializer.Deserialize(IParser parser, Type type)
   at YamlDotNet.Serialization.Deserializer.Deserialize(TextReader input, Type type)
   at YamlDotNet.Serialization.Deserializer.Deserialize(TextReader input)
   at Program.Main(String[] commandLineArguments)
Aborted (core dumped)

go-yaml-json

 error 
yaml: did not find expected node content

java-snakeengine-event

 error 
Exception in thread "main" while parsing a flow node
 in reader, line 1, column 5:
    {x: :x}
        ^
expected the node content, but found ':'
 in reader, line 1, column 5:
    {x: :x}
        ^

	at org.snakeyaml.engine.v2.parser.ParserImpl.parseNode(ParserImpl.java:548)
	at org.snakeyaml.engine.v2.parser.ParserImpl.parseFlowNode(ParserImpl.java:436)
	at org.snakeyaml.engine.v2.parser.ParserImpl.access$2700(ParserImpl.java:130)
	at org.snakeyaml.engine.v2.parser.ParserImpl$ParseFlowMappingValue.produce(ParserImpl.java:962)
	at org.snakeyaml.engine.v2.parser.ParserImpl.lambda$produce$0(ParserImpl.java:185)
	at java.util.Optional.ifPresent(Optional.java:159)
	at org.snakeyaml.engine.v2.parser.ParserImpl.produce(ParserImpl.java:185)
	at org.snakeyaml.engine.v2.parser.ParserImpl.hasNext(ParserImpl.java:210)
	at org.yaml.editor.SnakeEngine2Events.yamlToEvents(SnakeEngine2Events.java:15)
	at org.yaml.editor.SnakeEngine2Events.main(SnakeEngine2Events.java:23)

java-snakeengine-json

 error 
Exception in thread "main" while parsing a flow node
 in 'reader', line 1, column 5:
    {x: :x}
        ^
expected the node content, but found ':'
 in 'reader', line 1, column 5:
    {x: :x}
        ^

	at org.yaml.snakeyaml.parser.ParserImpl.parseNode(ParserImpl.java:526)
	at org.yaml.snakeyaml.parser.ParserImpl.parseFlowNode(ParserImpl.java:414)
	at org.yaml.snakeyaml.parser.ParserImpl.access$2400(ParserImpl.java:121)
	at org.yaml.snakeyaml.parser.ParserImpl$ParseFlowMappingValue.produce(ParserImpl.java:927)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:166)
	at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:59)
	at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:45)
	at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:140)
	at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:119)
	at org.yaml.snakeyaml.composer.Composer.composeScalarNode(Composer.java:217)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:187)
	at org.yaml.snakeyaml.composer.Composer.composeKeyNode(Composer.java:313)
	at org.yaml.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:304)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:289)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:191)
	at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:116)
	at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:135)
	at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:514)
	at org.yaml.editor.Snake2Json.yamlToJson(Snake2Json.java:20)
	at org.yaml.editor.Snake2Json.main(Snake2Json.java:27)

java-snakeyaml-event

 error 
Exception in thread "main" while parsing a flow node
 in 'reader', line 1, column 5:
    {x: :x}
        ^
expected the node content, but found ':'
 in 'reader', line 1, column 5:
    {x: :x}
        ^

	at org.yaml.snakeyaml.parser.ParserImpl.parseNode(ParserImpl.java:526)
	at org.yaml.snakeyaml.parser.ParserImpl.parseFlowNode(ParserImpl.java:414)
	at org.yaml.snakeyaml.parser.ParserImpl.access$2400(ParserImpl.java:121)
	at org.yaml.snakeyaml.parser.ParserImpl$ParseFlowMappingValue.produce(ParserImpl.java:927)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:166)
	at org.yaml.snakeyaml.Yaml$3.hasNext(Yaml.java:677)
	at org.yaml.editor.Snake2Events.yamlToEvents(Snake2Events.java:134)
	at org.yaml.editor.Snake2Events.main(Snake2Events.java:142)

java-snakeyaml-json

 error 
Exception in thread "main" while parsing a flow node
 in 'reader', line 1, column 5:
    {x: :x}
        ^
expected the node content, but found ':'
 in 'reader', line 1, column 5:
    {x: :x}
        ^

	at org.yaml.snakeyaml.parser.ParserImpl.parseNode(ParserImpl.java:526)
	at org.yaml.snakeyaml.parser.ParserImpl.parseFlowNode(ParserImpl.java:414)
	at org.yaml.snakeyaml.parser.ParserImpl.access$2400(ParserImpl.java:121)
	at org.yaml.snakeyaml.parser.ParserImpl$ParseFlowMappingValue.produce(ParserImpl.java:927)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:166)
	at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:59)
	at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:45)
	at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:140)
	at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:119)
	at org.yaml.snakeyaml.composer.Composer.composeScalarNode(Composer.java:217)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:187)
	at org.yaml.snakeyaml.composer.Composer.composeKeyNode(Composer.java:313)
	at org.yaml.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:304)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:289)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:191)
	at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:116)
	at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:135)
	at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:514)
	at org.yaml.editor.Snake2Json.yamlToJson(Snake2Json.java:20)
	at org.yaml.editor.Snake2Json.main(Snake2Json.java:27)

lua-lyaml-json

 error 
luajit: 1:2: did not find expected node content
stack traceback:
	[C]: in function 'error'
	/usr/local/share/lua/5.1/lyaml/init.lua:306: in function 'error'
	/usr/local/share/lua/5.1/lyaml/init.lua:325: in function 'parse'
	/usr/local/share/lua/5.1/lyaml/init.lua:443: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:378: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:497: in function 'load'
	/yaml/bin/lua-lyaml-json:6: in main chunk
	[C]: at 0x562e57fe8f97

perl-pplibyaml-json

 error 
YAML::PP::LibYAML Error: The problem:

    did not find expected node content

was found at , line: 1, column: 5
while parsing a flow node at line: 1, column: 5

perl-pplibyaml-perl

 error 
YAML::PP::LibYAML Error: The problem:

    did not find expected node content

was found at , line: 1, column: 5
while parsing a flow node at line: 1, column: 5

perl-xs-json

 error 
YAML::XS::Load Error: The problem:

    did not find expected node content

was found at document: 1, line: 1, column: 5
while parsing a flow node at line: 1, column: 5

perl-xs-perl

 error 
YAML::XS::Load Error: The problem:

    did not find expected node content

was found at document: 1, line: 1, column: 5
while parsing a flow node at line: 1, column: 5

perl-yaml-json

 error 
YAML Error: Invalid element in map
   Code: YAML_LOAD_ERR_BAD_MAP_ELEMENT
   Line: 1
   Document: 1
 at /perl5/lib/perl5/YAML/Loader.pm line 360.

perl-yaml-perl

 error 
YAML Error: Invalid element in map
   Code: YAML_LOAD_ERR_BAD_MAP_ELEMENT
   Line: 1
   Document: 1
 at /perl5/lib/perl5/YAML/Loader.pm line 360.

py-pyyaml-event

 error 
+STR
+DOC
+MAP {}
=VAL :x
Traceback (most recent call last):
  File "/yaml/bin/py-pyyaml-event", line 7, in <module>
    for event in yaml.parse(sys.stdin.read()):
  File "/python/lib/python3.7/site-packages/yaml/__init__.py", line 46, in parse
    while loader.check_event():
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 574, in parse_flow_mapping_value
    return self.parse_flow_node()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 268, in parse_flow_node
    return self.parse_node()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 371, in parse_node
    token.start_mark)
yaml.parser.ParserError: while parsing a flow node
expected the node content, but found ':'
  in "<unicode string>", line 1, column 5:
    {x: :x}
        ^

py-pyyaml-json

 error 
Traceback (most recent call last):
  File "/yaml/bin/py-pyyaml-json", line 19, in <module>
    for doc in yaml.load_all(sys.stdin.read(), Loader=yaml.FullLoader):
  File "/python/lib/python3.7/site-packages/yaml/__init__.py", line 93, in load_all
    yield loader.get_data()
  File "/python/lib/python3.7/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 133, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 64, in compose_node
    if self.check_event(AliasEvent):
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 574, in parse_flow_mapping_value
    return self.parse_flow_node()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 268, in parse_flow_node
    return self.parse_node()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 371, in parse_node
    token.start_mark)
yaml.parser.ParserError: while parsing a flow node
expected the node content, but found ':'
  in "<unicode string>", line 1, column 5:
    {x: :x}
        ^

py-pyyaml-py

 error 
Traceback (most recent call last):
  File "/yaml/bin/py-pyyaml-py", line 36, in <module>
    for doc in yaml.load_all(sys.stdin.read(), Loader=yaml.FullLoader):
  File "/python/lib/python3.7/site-packages/yaml/__init__.py", line 93, in load_all
    yield loader.get_data()
  File "/python/lib/python3.7/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 133, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 64, in compose_node
    if self.check_event(AliasEvent):
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 574, in parse_flow_mapping_value
    return self.parse_flow_node()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 268, in parse_flow_node
    return self.parse_node()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 371, in parse_node
    token.start_mark)
yaml.parser.ParserError: while parsing a flow node
expected the node content, but found ':'
  in "<unicode string>", line 1, column 5:
    {x: :x}
        ^

ruby-psych-json

 error 
/ruby/gems/psych/lib/psych.rb:459:in `parse': (<unknown>): did not find expected node content while parsing a flow node at line 1 column 5 (Psych::SyntaxError)
	from /ruby/gems/psych/lib/psych.rb:459:in `parse_stream'
	from /ruby/gems/psych/lib/psych.rb:565:in `load_stream'
	from /yaml/bin/ruby-psych-json:6:in `<main>'

hs-reference-yeast

 na 
Line  Col Char Byte Token|Content
   1    0    0    0 +DOC |
   1    0    0    0 +NODE|
   1    0    0    0 +MAP |
   1    0    0    0 =SYNX|{
   1    1    1    1 +PAIR|
   1    1    1    1 +NODE|
   1    1    1    1 +VAL |
   1    1    1    1 =TEXT|x
   1    2    2    2 -VAL |
   1    2    2    2 -NODE|
   1    2    2    2 =SYNX|:
   1    3    3    3 =WSPC|.
   1    4    4    4 +NODE|
   1    4    4    4 +VAL |
   1    4    4    4 =TEXT|:x
   1    6    6    6 -VAL |
   1    6    6    6 -NODE|
   1    6    6    6 -PAIR|
   1    6    6    6 =SYNX|}
   1    7    7    7 -MAP |
   1    7    7    7 -NODE|
   1    7    7    7 =EOL |\x0a
   2    0    8    8 -DOC |

perl-pp-perl

 na 
{
  'x' => ':x'
}

perl-syck-perl

 na 
{
  'x' => ':x'
}

perl-tiny-perl

 na 
{
  '{x' => ':x}'
}

py-ruamel-py

 na 
{'x': ':x'}

raku-yamlish-raku

 na 
{
  x => ":x".Str,
}