{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "http://www.cornutum.org/tcases/system-test-schema.json",
    "title": "System Test Model",
    "description": "Defines test cases for a system (version: 4.0.1)",

    "type": "object",
    "properties": {
        "system": {
            "type": "string"
        },
        "has": {
            "$ref": "#/definitions/annotation"
        }
    },
    "required": [ "system" ],
    "additionalProperties": {
        "$ref": "#/definitions/function"
    },

    "definitions": {
        "annotation": {
            "description": "Defines a set of output annotations",
            "type": "object",
            "patternProperties": {
                ".": {
                    "type": "string"
                }
            },
            "minProperties": 1
        },
        "function": {
            "description": "Defines the test cases for a system function",
            "oneOf": [
                {
                    "description": "Deprecated: For compatibility with version<=3.0.1",
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/testCase"
                    }
                },
                {
                    "type": "object",
                    "properties": {
                        "testCases": {
                            "type": "array",
                            "items": {
                                "$ref": "#/definitions/testCase"
                            }
                        },
                        "has": {
                            "$ref": "#/definitions/annotation"
                        }
                    },
                    "required": ["testCases"]
                }
            ]
        },
        "testCase": {
            "description": "Defines a test case for a system function",
            "type": "object",
            "properties": {
                "id": {
                    "type": "integer",
                    "minimum": 0
                },
                "name": {
                    "type": "string"
                },
                "has": {
                    "$ref": "#/definitions/annotation"
                }
            },
            "additionalProperties": {
                "$ref": "#/definitions/inputDef"
            },
            "required": ["id"]
        },
        "inputDef": {
            "description": "Defines bindings for a set of input variables of the same type",
            "type": "object",
            "minProperties": 1,
            "patternProperties": {
                ".": {
                    "$ref": "#/definitions/bindingDef"
                }
            }
        },
        "bindingDef": {
            "type": "object",
            "properties": {
                "has": {
                    "$ref": "#/definitions/annotation"
                },
                "value": {
                    "type": ["null", "boolean", "array", "number", "string"]
                },
                "source": {
                    "type": ["null", "boolean", "array", "number", "string"]
                },
                "NA": {
                    "type": "boolean"
                },
                "failure": {
                    "type": "boolean"
                }
            },
            "additionalProperties": false,
            "oneOf": [
                {
                    "required": ["value"],
                    "properties": {
                        "NA": false
                    }
                },
                {
                    "required": ["NA"],
                    "properties": {
                        "value": false,
                        "source": false,
                        "failure": false
                    }
                }
            ] 
        }
    }
}