Rest Assured 5.4.0 does not handle valid Json

[genekostruba]

I encountered a queryable Json object on the web similar to:

{"message":{"ErrorCode:":0,"ErrorMsg:":"Success"}}

Note the extra colons after ErrorCode and ErrorMsg. These extra colons are valid Json, as they are simply part of their strings, and any prettyprinter on the web will render it correctly as:

{
  "message":  {
    "ErrorCode:":  0,
    "ErrorMsg:":  "Success"
  }
}

However, after querying this object with restassured and extracting the response body to jsonString, the following code:

JsonPath jsonPath = new JsonPath(jsonString);
Assert.assertEquals(jsonPath.getInt("message.ErrorCode:"), 0);

throws error in the Assert statement:

java.lang.IllegalArgumentException: Invalid JSON expression

Removing the colon from the Assert statement:

Assert.assertEquals(jsonPath.getInt("message.ErrorCode"), 0);

and rerunning then throws error:

java.lang.NullPointerException: Cannot invoke "java.lang.Integer.intValue()" because the return value of
"io.restassured.internal.common.path.ObjectConverter.convertObjectTo(Object, java.lang.Class)" is null

Removing the extra colons from jsonString itself clears the error.

Not sure why restassured has a problem with this valid Json.

[lucas-nguyen-17]

An easy fix is using bracket, not dot.

getInt("message['ErrorCode:']")

[genekostruba]

Thanks Lucas, but you shouldn't have to use array notation to get around a path qualification problem.

[lucas-nguyen-17]

Rest-Assured uses GPath groovy internally to extract value and this error is not only for Rest-Assured. It happens with Javascript as well, example https://stackoverflow.com/questions/4925760/selecting-a-json-object-with-a-colon-in-the-key