score:1
Accepted answer
You don't show how you initialize fakeGuidForExecutiveSummary. Assuming you do it in the following way:
string fakeResponseFromExecutiveSummaryProxy = "{ \"DocumentID\": \"fakeGuid1\",\"documentNotes\": \"TestNotes1\"}";
var fakeResponse = JToken.Parse(fakeResponseFromExecutiveSummaryProxy);
var fakeGuidForExecutiveSummary = fakeResponse["DocumentID"];
Then the problem is that fakeGuidForExecutiveSummary is a JValue, not a JToken or JArray. Your code will throw the exception you see if you try to access a (nonexistent) child value by index.
Instead you need to do the following:
string response = @"[{ ""DocumentID"": ""fakeGuid1"",""documentNotes"": ""TestNotes1""}]";
JArray jsonResponse = JArray.Parse(response);
JToken token = jsonResponse[0];
//Value of token from Debugger - { "DocumentID": fakeGuid1","documentNotes": "TestNotes1"}
Assert.AreEqual(fakeGuidForExecutiveSummary, token["DocumentID"])
Update
Given your updated code, the problem is that your sample JSON response has too many levels of string escaping: \\\"DocumentID\\\". You probably copied escaped strings shown in Visual Studio into the source code, then escaped them some again.
Change it to
string response = "[\r\n { \"DocumentID\": \"fakeGuid1\",\"documentNotes\": \"TestNotes1\"}\r\n]";
Source: stackoverflow.com
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