Added some basic test

tests/data/empty.json

@@ -0,0 +1 @@
+{}

tests/data/invalid.json

@@ -0,0 +1,3 @@
+{
+    "foo": 'bar'
+}

tests/data/test.json

@@ -0,0 +1,15 @@
+{
+    "foo": "bar",
+    "abcdefg": [
+        "higklmnop",
+        {
+            "lol": {
+                "kek": [
+                    1.0000035,
+                    0.2542,
+                    1337
+                ]
+            }
+        }
+    ]
+}