Incorrect integer comparison as per JSON Schema spec

[TomWright]

It seems as though this json schema validator doesn't correctly handle float-like integer values.

See this example test case:

@Test
    fun int1() = runTest {
        val schema = """{
  "title": "foo",
  "type": "object",
  "required": ["x"],
  "properties": {
    "x": {
      "type": "integer"
    }
  }
}"""
        val a = "{\"x\": 1}"
        val b = "{\"x\": 1.0}"

        val ra = validationSchema.validate(schema, a)
        val rb = validationSchema.validate(schema, b)

        println(ra)
        // ValidateResult(messages=[], errors=[])
        println(rb)
        // ValidateResult(messages=[$.x: number found, integer expected], errors=[ValidationError(code=1029, type=null, path=$.x, arguments=[number, integer], message=Invalid value. Must be a integer)])
    }

We have a slight wrapper around networknt but this uses com.networknt.schema.JsonSchema.Set<ValidationMessage> validate(JsonNode node) under the hood.

As per the JSON schema spec, both of these test cases should return zero errors, see https://json-schema.org/understanding-json-schema/reference/numeric.html#id4.

The code above was run using com.networknt:json-schema-validator:1.0.73.