How can i write the AWS lamda unit test cases in scala? - scala

Question

How we can implement the unit test cases for aws lamda serverless.
My code is
object Test1 extends RequestHandler[APIGatewayProxyRequestEvent, APIGatewayProxyResponseEvent] with ResponseObjProcess {
override def handleRequest(input: APIGatewayProxyRequestEvent, context: Context): APIGatewayProxyResponseEvent = {
var response = new APIGatewayProxyResponseEvent()
val gson = new Gson
val requestHttpMethod = input.getHttpMethod
val requestBody = input.getBody
val requestHeaders = input.getHeaders
val requestPath = input.getPath
val requestPathParameters = input.getPathParameters
val requestQueryStringParameters = input.getQueryStringParameters
val parsedBody = JSON.parseFull(requestBody).getOrElse(0).asInstanceOf[Map[String, String]]
println(" parsedBody is:: " + parsedBody)
val active = parsedBody.get("active").getOrElse("false")
val created = parsedBody.get("created").getOrElse("0").toLong
val updated = parsedBody.get("updated").getOrElse("0").toLong
requestHttpMethod match {
case "PUT" =>
println(" PUT Request method ")
// insertRecords("alert_summary_report", requestBody)
response.setStatusCode(200)
response.setBody(gson.toJson("PUT"))
case _ =>
println("")
response.setStatusCode(400)
response.setBody(gson.toJson("None"))
}
response
}
}
And I tried to implement unit test cases for the above code.
Below code is:
test("testing record success case") {
var request = new APIGatewayProxyRequestEvent();
request.setHttpMethod(Constants.PUTREQUESTMETHOD)
DELETEREQUESTBODY.put("id", "")
request.setBody(EMPTYREQUESTBODY)
request.setPathParameters(DELETEREQUESTBODY)
println(s"body = ${request.getBody}")
println(s"headers = ${request.getHeaders}")
val response = ProxyRequestMain.handleRequest(subject, testContext)
val assertEqual = response.getStatusCode.equals(200)
assertEqual
}
Actually, I'm getting response.getStatusCode=400 bad requests but test case passed how can I write handle this.

Answer 1

I am looking at your test code and it's not clear to me what you are trying to achieve with your assertions. I think you might have mixed quite a few things. In the code as it currently stands, you have a val, not assertion. I'd encourage you to have a look at the relevant docs and research the options available to you:
http://www.scalatest.org/user_guide/using_assertions
http://www.scalatest.org/user_guide/using_matchers