[
  {
    "description": "Multi-Paradigm Declarative Cases",
    "database": {
      "schemas": [
        {
          "$id": "parallel_rules",
          "type": "object",
          "properties": {
            "status": { "type": "string" },
            "kind": { "type": "string" }
          },
          "cases": [
            {
              "when": { "properties": { "status": {"const": "unverified"} }, "required": ["status"] },
              "then": { 
                "properties": {
                  "amount_1": {"type": "number"},
                  "amount_2": {"type": "number"}
                },
                "required": ["amount_1", "amount_2"] 
              }
            },
            {
              "when": { "properties": { "kind": {"const": "credit"} }, "required": ["kind"] },
              "then": { 
                "properties": {
                  "cvv": {"type": "number"}
                },
                "required": ["cvv"] 
              }
            }
          ]
        },
        {
          "$id": "mutually_exclusive",
          "type": "object",
          "properties": {
            "type": { "type": "string" }
          },
          "cases": [
            {
              "when": { "properties": { "type": {"const": "A"} }, "required": ["type"] },
              "then": { 
                "properties": { "field_a": {"type": "number"} },
                "required": ["field_a"] 
              }
            },
            {
              "when": { "properties": { "type": {"const": "B"} }, "required": ["type"] },
              "then": { 
                "properties": { "field_b": {"type": "number"} },
                "required": ["field_b"] 
              },
              "else": { 
                "properties": { "fallback_b": {"type": "number"} },
                "required": ["fallback_b"] 
              }
            }
          ]
        },
        {
          "$id": "nested_fallbacks",
          "type": "object",
          "properties": {
            "tier": { "type": "string" }
          },
          "cases": [
            {
              "when": { "properties": { "tier": {"const": "1"} }, "required": ["tier"] },
              "then": { 
                "properties": { "basic": {"type": "number"} },
                "required": ["basic"] 
              },
              "else": {
                "cases": [
                  {
                    "when": { "properties": { "tier": {"const": "2"} }, "required": ["tier"] },
                    "then": { 
                      "properties": { "standard": {"type": "number"} },
                      "required": ["standard"] 
                    },
                    "else": { 
                      "properties": { "premium": {"type": "number"} },
                      "required": ["premium"] 
                    }
                  }
                ]
              }
            }
          ]
        },
        {
          "$id": "missing_when",
          "type": "object",
          "cases": [
            {
              "else": { 
                "properties": { "unconditional": {"type": "number"} },
                "required": ["unconditional"] 
              }
            }
          ]
        }
      ]
    },
    "tests": [
      {
        "description": "Fires only the first rule successfully",
        "data": { "status": "unverified", "amount_1": 1, "amount_2": 2 },
        "schema_id": "parallel_rules",
        "action": "validate",
        "expect": { "success": true }
      },
      {
        "description": "Fires both independent parallel rules flawlessly",
        "data": { "status": "unverified", "kind": "credit", "amount_1": 1, "amount_2": 2, "cvv": 123 },
        "schema_id": "parallel_rules",
        "action": "validate",
        "expect": { "success": true }
      },
      {
        "description": "Catches errors triggered concurrently by multiple independent blocked rules",
        "data": { "status": "unverified", "kind": "credit" },
        "schema_id": "parallel_rules",
        "action": "validate",
        "expect": {
          "success": false,
          "errors": [
            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "amount_1" } },
            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "amount_2" } },
            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "cvv" } }
          ]
        }
      },
      {
        "description": "STRICT_PROPERTY_VIOLATION throws if an un-triggered then property is submitted",
        "data": { "status": "verified", "cvv": 123 },
        "schema_id": "parallel_rules",
        "action": "validate",
        "expect": {
          "success": false,
          "errors": [
            { "code": "STRICT_PROPERTY_VIOLATION", "details": { "path": "cvv" } }
          ]
        }
      },
      {
        "description": "Successfully routes mutually exclusive properties seamlessly",
        "data": { "type": "A", "field_a": 1, "fallback_b": 2 },
        "schema_id": "mutually_exclusive",
        "action": "validate",
        "expect": { "success": true }
      },
      {
        "description": "Nested fallbacks execute seamlessly",
        "data": { "tier": "3", "premium": 1 },
        "schema_id": "nested_fallbacks",
        "action": "validate",
        "expect": { "success": true }
      },
      {
        "description": "A case without a when executes its else indiscriminately",
        "data": { "unconditional": 1 },
        "schema_id": "missing_when",
        "action": "validate",
        "expect": { "success": true }
      },
      {
        "description": "A case without a when throws if else unconditionally requires field",
        "data": { },
        "schema_id": "missing_when",
        "action": "validate",
        "expect": {
          "success": false,
          "errors": [
            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "unconditional" } }
          ]
        }
      }
    ]
  }
]