# YAML Test Matrix

--- &test-NJ66
  Title: Multiline plain flow mapping key
  Tags: [ flow, mapping ]

YAML

---
- { single line: value}
- { multi
  line: value}

Expected Events

+STR
+DOC ---
+SEQ
+MAP {}
=VAL :single line
=VAL :value
-MAP
+MAP {}
=VAL :multi line
=VAL :value
-MAP
-SEQ
-DOC
-STR

Expected JSON

[
{
"single line": "value"
},
{
"multi line": "value"
}
]

c-libfyaml-event

 ok

cpp-rapidyaml-event

 ok

dotnet-yamldotnet-event

 ok

hs-hsyaml-event

 ok

js-yaml-event

 ok

nim-nimyaml-event

 ok

perl-pp-event

 ok

perl-refparser-event

 ok

c-libfyaml-json

 json_ok

dotnet-yamldotnet-json

 json_ok

hs-hsyaml-json

 json_ok

js-yaml-json

 json_ok

perl-pp-json

 json_ok

c-libyaml-event

 error
+STR
+DOC ---
+SEQ
+MAP {}
=VAL :single line
=VAL :value
-MAP
+MAP {}
=VAL :multi line
=VAL :
Parse error: did not find expected ',' or '}'

cpp-yamlcpp-event

 error
+STR
+DOC
+SEQ
+MAP {}
=VAL :single line
=VAL :value
-MAP
+MAP {}
=VAL :
=VAL :
Exception:
yaml-cpp: error at line 3, column 5: end of map flow not found

go-yaml-json

 error
yaml: line 3: did not find expected ',' or '}'

js-jsyaml-json

 error
/node/node_modules/js-yaml/lib/loader.js:187
  throw generateError(state, message);
  ^
YAMLException: missed comma between flow collection entries (4:7)

 1 | ---
 2 | - { single line: value}
 3 | - { multi
 4 |   line: value}
-----------^
    at generateError (/node/node_modules/js-yaml/lib/loader.js:183:10)
    at throwError (/node/node_modules/js-yaml/lib/loader.js:187:9)
    at readFlowCollection (/node/node_modules/js-yaml/lib/loader.js:758:7)
    at composeNode (/node/node_modules/js-yaml/lib/loader.js:1442:11)
    at readBlockMapping (/node/node_modules/js-yaml/lib/loader.js:1104:12)
    at composeNode (/node/node_modules/js-yaml/lib/loader.js:1441:12)
    at readBlockSequence (/node/node_modules/js-yaml/lib/loader.js:1008:5)
    at composeNode (/node/node_modules/js-yaml/lib/loader.js:1440:12)
    at readDocument (/node/node_modules/js-yaml/lib/loader.js:1625:3)
    at loadDocuments (/node/node_modules/js-yaml/lib/loader.js:1688:5) {
  reason: 'missed comma between flow collection entries',
  mark: {
    name: null,
    buffer: '---\n- { single line: value}\n- { multi\n  line: value}\n',
    position: 44,
    line: 3,
    column: 6,
    snippet: ' 1 | ---\n' +
      ' 2 | - { single line: value}\n' +
      ' 3 | - { multi\n' +
      ' 4 |   line: value}\n' +
      '-----------^'
  }
}

Node.js v20.13.1

lua-lyaml-json

 error
luajit: 4:7: did not find expected ',' or '}'
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:340: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:393: 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 0x561f6ddaced0

perl-pplibyaml-json

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

    did not find expected ',' or '}'

was found at , line: 4, column: 7
while parsing a flow mapping at line: 3, column: 3

perl-pplibyaml-perl

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

    did not find expected ',' or '}'

was found at , line: 4, column: 7
while parsing a flow mapping at line: 3, column: 3

perl-syck-json

 error
Syck parser (line 4, column 6): syntax error at /perl5/lib/perl5/x86_64-linux-thread-multi/YAML/Syck.pm line 60, <> line 1.

perl-syck-perl

 error
Syck parser (line 4, column 6): syntax error at /perl5/lib/perl5/x86_64-linux-thread-multi/YAML/Syck.pm line 60, <> line 1.

perl-xs-json

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

    did not find expected ',' or '}'

was found at document: 1, line: 4, column: 7
while parsing a flow mapping at line: 3, column: 3

perl-xs-perl

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

    did not find expected ',' or '}'

was found at document: 1, line: 4, column: 7
while parsing a flow mapping at line: 3, column: 3

perl-yaml-json

 error
YAML Error: Inconsistent indentation level
   Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION
   Line: 4
   Document: 1
 at /perl5/lib/perl5/YAML/Loader.pm line 804.

perl-yaml-perl

 error
YAML Error: Inconsistent indentation level
   Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION
   Line: 4
   Document: 1
 at /perl5/lib/perl5/YAML/Loader.pm line 804.

py-pyyaml-event

 error
+STR
+DOC ---
+SEQ
+MAP {}
=VAL :single line
=VAL :value
-MAP
+MAP {}
=VAL :multi line
=VAL :
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/python3.12/site-packages/yaml/__init__.py", line 75, in parse
    while loader.check_event():
          ^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 549, in parse_flow_mapping_key
    raise ParserError("while parsing a flow mapping", self.marks[-1],
yaml.parser.ParserError: while parsing a flow mapping
  in "<unicode string>", line 3, column 3:
    - { multi
      ^
expected ',' or '}', but got ':'
  in "<unicode string>", line 4, column 7:
      line: value}
          ^

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/python3.12/site-packages/yaml/__init__.py", line 130, in load_all
    yield loader.get_data()
          ^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
                                   ^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 82, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 111, in compose_sequence_node
    node.value.append(self.compose_node(node, index))
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 127, in compose_mapping_node
    while not self.check_event(MappingEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 549, in parse_flow_mapping_key
    raise ParserError("while parsing a flow mapping", self.marks[-1],
yaml.parser.ParserError: while parsing a flow mapping
  in "<unicode string>", line 3, column 3:
    - { multi
      ^
expected ',' or '}', but got ':'
  in "<unicode string>", line 4, column 7:
      line: value}
          ^

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/python3.12/site-packages/yaml/__init__.py", line 130, in load_all
    yield loader.get_data()
          ^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
                                   ^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 82, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 111, in compose_sequence_node
    node.value.append(self.compose_node(node, index))
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 127, in compose_mapping_node
    while not self.check_event(MappingEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 549, in parse_flow_mapping_key
    raise ParserError("while parsing a flow mapping", self.marks[-1],
yaml.parser.ParserError: while parsing a flow mapping
  in "<unicode string>", line 3, column 3:
    - { multi
      ^
expected ',' or '}', but got ':'
  in "<unicode string>", line 4, column 7:
      line: value}
          ^

py-ruamel-event

 error
+STR
+DOC ---
+SEQ
+MAP {}
=VAL :single line
=VAL :value
-MAP
+MAP {}
=VAL :multi line
=VAL :
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-event", line 9, in <module>
    for event in yaml.parse(sys.stdin.read()):
  File "/python/lib/python3.12/site-packages/ruamel/yaml/main.py", line 371, in parse
    while parser.check_event():
          ^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 141, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 747, in parse_flow_mapping_key
    raise ParserError(
ruamel.yaml.parser.ParserError: while parsing a flow mapping
  in "<unicode string>", line 3, column 3:
    - { multi
      ^ (line: 3)
expected ',' or '}', but got ':'
  in "<unicode string>", line 4, column 7:
      line: value}
          ^ (line: 4)

py-ruamel-json

 error
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-json", line 21, in <module>
    for doc in yaml.load_all(sys.stdin.read()):
  File "/python/lib/python3.12/site-packages/ruamel/yaml/main.py", line 476, in load_all
    yield constructor.get_data()
          ^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/constructor.py", line 110, in get_data
    return self.construct_document(self.composer.get_node())
                                   ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 63, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 94, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 128, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 173, in compose_sequence_node
    node.value.append(self.compose_node(node, index))
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 130, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 204, in compose_mapping_node
    while not self.parser.check_event(MappingEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 141, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 747, in parse_flow_mapping_key
    raise ParserError(
ruamel.yaml.parser.ParserError: while parsing a flow mapping
  in "<unicode string>", line 3, column 3:
    - { multi
      ^ (line: 3)
expected ',' or '}', but got ':'
  in "<unicode string>", line 4, column 7:
      line: value}
          ^ (line: 4)

py-ruamel-py

 error
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-py", line 38, in <module>
    for doc in yaml.load_all(sys.stdin.read()):
  File "/python/lib/python3.12/site-packages/ruamel/yaml/main.py", line 476, in load_all
    yield constructor.get_data()
          ^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/constructor.py", line 110, in get_data
    return self.construct_document(self.composer.get_node())
                                   ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 63, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 94, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 128, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 173, in compose_sequence_node
    node.value.append(self.compose_node(node, index))
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 130, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 204, in compose_mapping_node
    while not self.parser.check_event(MappingEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 141, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 747, in parse_flow_mapping_key
    raise ParserError(
ruamel.yaml.parser.ParserError: while parsing a flow mapping
  in "<unicode string>", line 3, column 3:
    - { multi
      ^ (line: 3)
expected ',' or '}', but got ':'
  in "<unicode string>", line 4, column 7:
      line: value}
          ^ (line: 4)

ruby-psych-json

 error
/ruby/gems/psych/lib/psych.rb:458:in `parse': (<unknown>): did not find expected ',' or '}' while parsing a flow mapping at line 3 column 3 (Psych::SyntaxError)
	from /ruby/gems/psych/lib/psych.rb:458:in `parse_stream'
	from /ruby/gems/psych/lib/psych.rb:632:in `load_stream'
	from /yaml/bin/ruby-psych-json:6:in `<main>'

rust-yamlrust-event

 error
+STR
+DOC
+SEQ
+MAP
=VAL :single line
=VAL :value
-MAP
+MAP
=VAL :multi line
=VAL :
Error: ScanError { mark: Marker { index: 44, line: 4, col: 6 }, info: "while parsing a flow mapping, did not find expected ',' or '}'" }

hs-reference-yeast

 na
Line  Col Char Byte Token|Content
   1    0    0    0 +DOC |
   1    0    0    0 =HEAD|---
   1    3    3    3 +NODE|
   1    3    3    3 =EOL |\x0a
   2    0    4    4 +SEQ |
   2    0    4    4 =SYNX|-
   2    1    5    5 =WSPC|.
   2    2    6    6 +NODE|
   2    2    6    6 +MAP |
   2    2    6    6 =SYNX|{
   2    3    7    7 =WSPC|.
   2    4    8    8 +PAIR|
   2    4    8    8 +NODE|
   2    4    8    8 +VAL |
   2    4    8    8 =TEXT|single.line
   2   15   19   19 -VAL |
   2   15   19   19 -NODE|
   2   15   19   19 =SYNX|:
   2   16   20   20 =WSPC|.
   2   17   21   21 +NODE|
   2   17   21   21 +VAL |
   2   17   21   21 =TEXT|value
   2   22   26   26 -VAL |
   2   22   26   26 -NODE|
   2   22   26   26 -PAIR|
   2   22   26   26 =SYNX|}
   2   23   27   27 -MAP |
   2   23   27   27 -NODE|
   2   23   27   27 =EOL |\x0a
   3    0   28   28 =SYNX|-
   3    1   29   29 =WSPC|.
   3    2   30   30 +NODE|
   3    2   30   30 +MAP |
   3    2   30   30 =SYNX|{
   3    3   31   31 =WSPC|.
   3    4   32   32 +PAIR|
   3    4   32   32 +NODE|
   3    4   32   32 +VAL |
   3    4   32   32 =TEXT|multi
   3    9   37   37 =FOLD|\x0a
   4    0   38   38 =DENT|.
   4    1   39   39 =WSPC|.
   4    2   40   40 =TEXT|line
   4    6   44   44 -VAL |
   4    6   44   44 -NODE|
   4    6   44   44 =SYNX|:
   4    7   45   45 =WSPC|.
   4    8   46   46 +NODE|
   4    8   46   46 +VAL |
   4    8   46   46 =TEXT|value
   4   13   51   51 -VAL |
   4   13   51   51 -NODE|
   4   13   51   51 -PAIR|
   4   13   51   51 =SYNX|}
   4   14   52   52 -MAP |
   4   14   52   52 -NODE|
   4   14   52   52 =EOL |\x0a
   5    0   53   53 -SEQ |
   5    0   53   53 -NODE|
   5    0   53   53 -DOC |

perl-pp-perl

 na
[
  {
    'single line' => 'value'
  },
  {
    'multi line' => 'value'
  }
]

perl-tiny-json

 ni
YAML::Tiny found illegal characters in plain scalar: '{ single line: value}' at /yaml/bin/perl-tiny-json line 12.

perl-tiny-perl

 ni
YAML::Tiny found illegal characters in plain scalar: '{ single line: value}' at /yaml/bin/perl-tiny-perl line 15.