add tests for json parse/stringify of bigints

package.json

@@ -4,7 +4,7 @@
   "description": "Datadog API Node.JS Client",
   "main": "lib/index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "./node_modules/.bin/mocha ./test",
     "docs": "node ./docs/create.js > index.html"
   },
   "bin": {
@@ -38,9 +38,11 @@
     "rc": "^1.0.0"
   },
   "devDependencies": {
+    "bignumber.js": "^2.0.7",
     "docast": "^0.1.1",
     "glob": "^5.0.3",
     "js-yaml": "^3.2.7",
-    "marked": "^0.3.3"
+    "marked": "^0.3.3",
+    "mocha": "^2.2.5"
   }
 }

test/json.js

@@ -0,0 +1,26 @@
+var assert = require("assert");
+var BigNumber = require("bignumber.js");
+var json = require("../lib/json");
+
+describe("json", function(){
+    describe("#parse()", function(){
+        it("should properly parse big integers", function(){
+            // DEV: This test case is from: https://github.com/brettlangdon/node-dogapi/issues/16
+            var data = "{\"id\": 2868860079149422351}";
+            var parsed = json.parse(data);
+            // `parsed.id` is an instance of `BigNumber`
+            assert.equal(parsed.id.toString(), "2868860079149422351");
+        });
+    });
+
+    describe("#stringify()", function(){
+        it("should properly parse big integers", function(){
+            // DEV: This test case is from: https://github.com/brettlangdon/node-dogapi/issues/16
+            var data = {"id": new BigNumber('2868860079149422351')};
+            var stringified = json.stringify(data);
+            // Yeah, it ends up being a string and not an int, but mostly we
+            // want to make sure it doesn't throw an error or provide the wrong number
+            assert.equal(stringified, "{\"id\":\"2868860079149422351\"}");
+        });
+    });
+});