[
  {
    "description": "Edge missing - 0 relations",
    "database": {
      "types": [
        {
          "id": "11111111-1111-1111-1111-111111111111",
          "type": "type",
          "name": "org",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "org"
          ],
          "variations": [
            "org"
          ],
          "schemas": [
            {
              "$id": "full.org",
              "type": "object",
              "properties": {
                "missing_users": {
                  "type": "array",
                  "items": {
                    "$ref": "full.user"
                  }
                }
              }
            }
          ]
        },
        {
          "id": "22222222-2222-2222-2222-222222222222",
          "type": "type",
          "name": "user",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "user"
          ],
          "variations": [
            "user"
          ],
          "schemas": [
            {
              "$id": "full.user",
              "type": "object",
              "properties": {}
            }
          ]
        }
      ],
      "relations": []
    },
    "tests": [
      {
        "description": "throws EDGE_MISSING when 0 relations exist between org and user",
        "action": "compile",
        "expect": {
          "success": false,
          "errors": [
            {
              "code": "EDGE_MISSING"
            }
          ]
        }
      }
    ]
  },
  {
    "description": "Edge missing - array cardinality rejection",
    "database": {
      "types": [
        {
          "id": "11111111-1111-1111-1111-111111111111",
          "type": "type",
          "name": "parent",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "parent"
          ],
          "variations": [
            "parent"
          ],
          "schemas": [
            {
              "$id": "full.parent",
              "type": "object",
              "properties": {
                "children": {
                  "type": "array",
                  "items": {
                    "$ref": "full.child"
                  }
                }
              }
            }
          ]
        },
        {
          "id": "22222222-2222-2222-2222-222222222222",
          "type": "type",
          "name": "child",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "child"
          ],
          "variations": [
            "child"
          ],
          "schemas": [
            {
              "$id": "full.child",
              "type": "object",
              "properties": {}
            }
          ]
        }
      ],
      "relations": [
        {
          "id": "33333333-3333-3333-3333-333333333333",
          "type": "relation",
          "constraint": "fk_parent_child",
          "source_type": "parent",
          "source_columns": [
            "child_id"
          ],
          "destination_type": "child",
          "destination_columns": [
            "id"
          ]
        }
      ]
    },
    "tests": [
      {
        "description": "throws EDGE_MISSING because a Forward scaler edge cannot mathematically fulfill an Array collection",
        "action": "compile",
        "expect": {
          "success": false,
          "errors": [
            {
              "code": "EDGE_MISSING"
            }
          ]
        }
      }
    ]
  },
  {
    "description": "Ambiguous type relations - multiple unprefixed relations",
    "database": {
      "types": [
        {
          "id": "11111111-1111-1111-1111-111111111111",
          "type": "type",
          "name": "invoice",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "invoice"
          ],
          "variations": [
            "invoice"
          ],
          "schemas": [
            {
              "$id": "full.invoice",
              "type": "object",
              "properties": {
                "activities": {
                  "type": "array",
                  "items": {
                    "$ref": "full.activity"
                  }
                }
              }
            }
          ]
        },
        {
          "id": "22222222-2222-2222-2222-222222222222",
          "type": "type",
          "name": "activity",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "activity"
          ],
          "variations": [
            "activity"
          ],
          "schemas": [
            {
              "$id": "full.activity",
              "type": "object",
              "properties": {}
            }
          ]
        }
      ],
      "relations": [
        {
          "id": "33333333-3333-3333-3333-333333333333",
          "type": "relation",
          "constraint": "fk_activity_invoice_1",
          "source_type": "activity",
          "source_columns": [
            "invoice_id_1"
          ],
          "destination_type": "invoice",
          "destination_columns": [
            "id"
          ]
        },
        {
          "id": "44444444-4444-4444-4444-444444444444",
          "type": "relation",
          "constraint": "fk_activity_invoice_2",
          "source_type": "activity",
          "source_columns": [
            "invoice_id_2"
          ],
          "destination_type": "invoice",
          "destination_columns": [
            "id"
          ]
        }
      ]
    },
    "tests": [
      {
        "description": "throws AMBIGUOUS_TYPE_RELATIONS when fallback encounters multiple naked constraints",
        "action": "compile",
        "expect": {
          "success": false,
          "errors": [
            {
              "code": "AMBIGUOUS_TYPE_RELATIONS",
              "details": {
                "cause": "Multiple conflicting constraints found matching prefixes",
                "context": [
                  {
                    "constraint": "fk_activity_invoice_1"
                  },
                  {
                    "constraint": "fk_activity_invoice_2"
                  }
                ]
              }
            }
          ]
        }
      }
    ]
  },
  {
    "description": "Ambiguous type relations - M:M twin deduction failure",
    "database": {
      "types": [
        {
          "id": "11111111-1111-1111-1111-111111111111",
          "type": "type",
          "name": "actor",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "actor"
          ],
          "variations": [
            "actor"
          ],
          "schemas": [
            {
              "$id": "full.actor",
              "type": "object",
              "properties": {
                "ambiguous_edge": {
                  "type": "array",
                  "items": {
                    "$ref": "empty.junction"
                  }
                }
              }
            }
          ]
        },
        {
          "id": "22222222-2222-2222-2222-222222222222",
          "type": "type",
          "name": "junction",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "junction"
          ],
          "variations": [
            "junction"
          ],
          "schemas": [
            {
              "$id": "empty.junction",
              "type": "object",
              "properties": {}
            }
          ]
        }
      ],
      "relations": [
        {
          "id": "33333333-3333-3333-3333-333333333333",
          "type": "relation",
          "constraint": "fk_junction_source_actor",
          "source_type": "junction",
          "source_columns": [
            "source_id"
          ],
          "destination_type": "actor",
          "destination_columns": [
            "id"
          ],
          "prefix": "source"
        },
        {
          "id": "44444444-4444-4444-4444-444444444444",
          "type": "relation",
          "constraint": "fk_junction_target_actor",
          "source_type": "junction",
          "source_columns": [
            "target_id"
          ],
          "destination_type": "actor",
          "destination_columns": [
            "id"
          ],
          "prefix": "target"
        }
      ]
    },
    "tests": [
      {
        "description": "throws AMBIGUOUS_TYPE_RELATIONS because child doesn't explicitly expose 'source' or 'target' for twin deduction",
        "action": "compile",
        "expect": {
          "success": false,
          "errors": [
            {
              "code": "AMBIGUOUS_TYPE_RELATIONS",
              "details": {
                "cause": "Multiple conflicting constraints found matching prefixes",
                "context": [
                  {
                    "constraint": "fk_junction_source_actor"
                  },
                  {
                    "constraint": "fk_junction_target_actor"
                  }
                ]
              }
            }
          ]
        }
      }
    ]
  },
  {
    "description": "Database type parse failed",
    "database": {
      "types": [
        {
          "id": [
            "must",
            "be",
            "string",
            "to",
            "fail"
          ],
          "type": "type",
          "name": "failure",
          "module": "test",
          "source": "test",
          "hierarchy": [
            "failure"
          ],
          "variations": [
            "failure"
          ]
        }
      ]
    },
    "tests": [
      {
        "description": "throws DATABASE_TYPE_PARSE_FAILED when metadata completely fails Serde typing",
        "action": "compile",
        "expect": {
          "success": false,
          "errors": [
            {
              "code": "DATABASE_TYPE_PARSE_FAILED"
            }
          ]
        }
      }
    ]
  }
]