protocol/src/test/scala/org/apache/toree/kernel/protocol/v5/content/CompleteReplyErrorSpec.scala

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License
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package org.apache.toree.kernel.protocol.v5.content

import org.scalatest.{FunSpec, Matchers}
import play.api.data.validation.ValidationError
import play.api.libs.json._

class CompleteReplyErrorSpec extends FunSpec with Matchers {
  val completeReplyErrorJson: JsValue = Json.parse("""
  {
    "matches": [],
    "cursor_start": 1,
    "cursor_end": 5,
    "metadata": {},
    "status": "error",
    "ename":"<STRING>",
    "evalue": "<STRING>",
    "traceback": []
  }
  """)
  
  
  val completeReplyError: CompleteReplyError = CompleteReplyError(
    List(), 1, 5, Map(), Some("<STRING>"), Some("<STRING>"), Some(List())
  )

  describe("CompleteReplyError") {
    describe("implicit conversions") {
      it("should implicitly convert from valid json to a CompleteReplyError instance") {
        // This is the least safe way to convert as an error is thrown if it fails
        completeReplyErrorJson.as[CompleteReplyError] should be (completeReplyError)
      }

      it("should also work with asOpt") {
        // This is safer, but we lose the error information as it returns
        // None if the conversion fails
        val newCompleteReplyOk = completeReplyErrorJson.asOpt[CompleteReplyError]

        newCompleteReplyOk.get should be (completeReplyError)
      }

      it("should also work with validate") {
        // This is the safest as it collects all error information (not just first error) and reports it
        val CompleteReplyOkResults = completeReplyErrorJson.validate[CompleteReplyError]

        CompleteReplyOkResults.fold(
          (invalid: Seq[(JsPath, Seq[ValidationError])]) => println("Failed!"),
          (valid: CompleteReplyError) => valid
        ) should be (completeReplyError)
      }

      it("should implicitly convert from a CompleteReplyError instance to valid json") {
        Json.toJson(completeReplyError) should be (completeReplyErrorJson)
      }
    }
  }
}