yaml-json-interoperability.yaml

# Supported
supported-failsafe-schema:
  data: |-
    map:
      Block style: !!map
        Clark : Evans
        Ingy  : döt Net
        Oren  : Ben-Kiki
      Flow style: !!map { Clark: Evans, Ingy: döt Net, Oren: Ben-Kiki }
    seq:
      Block style: !!seq
      - Clark Evans
      - Ingy döt Net
      - Oren Ben-Kiki
      Flow style: !!seq [ Clark Evans, Ingy döt Net, Oren Ben-Kiki ]
    str:
      Block style: !!str |-
      String: just a theory.
      Flow style: !!str "String: just a theory."
  expected: '{"map": {"Block style": {"Clark": "Evans", "Ingy": "d\u00f6t Net", "Oren": "Ben-Kiki"}, "Flow style": {"Clark": "Evans", "Ingy": "d\u00f6t Net", "Oren": "Ben-Kiki"}}, "seq": {"Block style": ["Clark Evans", "Ingy d\u00f6t Net", "Oren Ben-Kiki"], "Flow style": ["Clark Evans", "Ingy d\u00f6t Net", "Oren Ben-Kiki"]}, "str": {"Block style": "", "String": "just a theory.", "Flow style": "String: just a theory."}}'
supported-json-schema-restricted:  # weird name though ;)
  data: |-
    "null":
      !!null null: value for null key
      key with null value: !!null null
    int:
      negative: !!int -12
      zero: !!int 0
      positive: !!int 34
    float:
      negative: !!float -1
      zero: !!float 0
      positive: !!float 2.3e4
    "bool":
      YAML is a superset of JSON: !!bool true
      Pluto is a planet: !!bool false
  expected: '{"null": {"null": "value for null key", "key with null value": null}, "int": {"negative": -12, "zero": 0, "positive": 34}, "float": {"negative": -1.0, "zero": 0.0, "positive": 23000.0}, "bool": {"YAML is a superset of JSON": true, "Pluto is a planet": false}}'
supported-core-tag-no-infnan:
  data: |-
    A null: null
    Also a null: # Empty
    Not a null: ""
    Booleans: [ true, True, false, FALSE ]
    Integers: [ 0, 0o7, 0x3A, -19 ]  # Buggy pyyaml
    Floats: [
      0., -0.0, .5, +12e03, -2E+05 ]
  expected: '{"A null": null, "Also a null": null, "Not a null": "", "Booleans": [true, true, false, false], "Integers": [0, "0o7", 58, -19], "Floats": [0.0, -0.0, 0.5, "+12e03", "-2E+05"]}'
supported-base:
  data: |-
    a: [1, 2, 3]
    b: { c: d }
  expected: |-
    {"a": [1, 2, 3], "b": {"c": "d"}}
supported-simple-mapping:
  expected: |-
    {"foo": "value"}
  data: |-
    ? foo
    : value
supported-quoted-scalars:
  data: |-
    unicode: "Sosa did fine.\u263A"
    control: "\b1998\t1999\t2000\n"
    hex esc: "\x0d\x0a is \r\n"
  expected: '{"unicode": "Sosa did fine.\u263a", "control": "\b1998\t1999\t2000\n", "hex esc": "\r\n is \r\n"}'
floating_point_ok:
  data: |-
    canonical: 1.23015e+3
    exponential: 12.3015e+02
    fixed: 1230.15
  expected: >-
    {"canonical": 1230.15, "exponential": 1230.15, "fixed": 1230.15}
supported-merge-keys:
  data: |-
    - &CENTER { x: 1, y: 2 }
    - &LEFT { x: 0, y: 2 }
    - &BIG { r: 10 }
    - &SMALL { r: 1 }
    - # Explicit keys
      x: 1
      y: 2
      r: 10
      label: center/big

    - # Merge one map
      << : *CENTER
      r: 10
      label: center/big

    - # Merge multiple maps
      << : [ *CENTER, *BIG ]
      label: center/big

    - # Override
      << : [ *BIG, *LEFT, *SMALL ]
      x: 1
      label: center/big
  expected: '[{"x": 1, "y": 2}, {"x": 0, "y": 2}, {"r": 10}, {"r": 1}, {"x": 1, "y": 2, "r": 10, "label": "center/big"}, {"x": 1, "y": 2, "r": 10, "label": "center/big"}, {"r": 10, "x": 1, "y": 2, "label": "center/big"}, {"r": 10, "x": 1, "y": 2, "label": "center/big"}]'

# Weird
octal_and_co:
  data: |-
    canonical: 12345
    decimal: +12345
    octal: 0o14  # there's a bug in pyyaml here
    hexadecimal: 0xC
  expected: >-
    {"canonical": 12345, "decimal": 12345, "octal": "0o14", "hexadecimal": 12}
# Unsupported schemas.
unsupported-json-schema:  # weird name though ;)
  data: |-
    "null":
      !!null null: value for null key
      key with null value: !!null null
    int:
      negative: !!int -12
      zero: !!int 0
      positive: !!int 34
    float:
      negative: !!float -1
      zero: !!float 0
      positive: !!float 2.3e4
      infinity: !!float .inf
      not a number: !!float .nan
    "bool":
      YAML is a superset of JSON: !!bool true
      Pluto is a planet: !!bool false
  expected: false
  error: 'Out of range float values are not JSON compliant'
# Unsupported scalar
unsupported-types-timestamp:
  data: |-
    a: !!timestamp 2020-01-01
  expected: false
  error: Object of type date is not JSON serializable
unsupported-types-timestamp-canonical:
  data: |-
    canonical: 2001-12-15T02:59:43.1Z
  expected: false
  error: Object of type datetime is not JSON serializable
unsupported-types-timestamp-iso8601:
  data: |-
    iso8601: 2001-12-14t21:59:43.10-05:00
  expected: false
  error: Object of type datetime is not JSON serializable
unsupported-types-timestamp-spaced:
  data: |-
    spaced: 2001-12-14 21:59:43.10 -5
  expected: false
  error: Object of type datetime is not JSON serializable
unsupported-types-binary:
  data: |-
    a: !!binary MTIz
  expected: false
  error: Object of type bytes is not JSON serializable
unsupported-inf_not_json_rfc:
  data: |-
    negative infinity: -.inf
  expected: false
unsupported-nan_not_json_rfc:
  data: |-
    not a number: .nan
  expected: false
unsupported-local-tags:
  description: |-
    YAML local tags represent application-wide type information.
    This is not interoperable wrt JSON.
  data: |-
    1: !!python/object:builtins.object {}
  expected: false
  error: >-
    Object of type object is not JSON serializable|could not determine a constructor for the tag
unsupported-circular-references:
  description: |-
    This is a legitimate yaml document, but the JSON
    serializer should not accept serializing such a
    data structure (eg. a nested dictionary).
  data: |-
    person: &person
      name: Joe
      child: *person
  expected: false
  error: Circular reference detected  # in json.dumps()
# Unsupported structured types
unsupported-types-set:
  data: |-
    a: !!set
      ? Mark McGwire
      ? Sammy Sosa
      ? Ken Griffey
  expected: false
  error: Object of type set is not JSON serializable
supported-types-pairs:
  data: |-
    a: !!pairs
      - Mark McGwire: 65
      - Sammy Sosa: 63
      - Ken Griffey: 58
  expected: false
  error: >-
    Non-JSON type not preserved in round-trip: !!pairs
unsupported-types-omap:
  data: |-
    a: !!omap
      - Mark McGwire: 65
      - Sammy Sosa: 63
      - Ken Griffey: 58
  expected: false
  error: >-
    Non-JSON type not preserved in round-trip: !!omap
unsupported-complex-mapping-key-seq:
  expected: false
  data: |-
    ? - foo
    : value
unsupported-complex-mapping-key-map:
  expected: false
  data: |-
    ? {a: b}
    : value