Added test cases

Author: Biboswan

jsone/render.py

@@ -143,7 +143,7 @@ def ifConstruct(template, context):
 def jsonConstruct(template, context):
     checkUndefinedProperties(template, ['\$json'])
     value = renderValue(template['$json'], context)
-    return json.dumps(value, separators=(',', ':'))
+    return json.dumps(value, separators=(',', ':'), sort_keys=True)
 
 
 @operator('$let')

specification.yml

@@ -49,8 +49,28 @@ result:   '{"Z":null,"a":{"b":["9",8,{}],"c":45},"q":1,"r":true}'
 ---
 title:   $json sorting unicode strings
 context:  {}
-template: {$json: {'\u0048\u0050': 56, '\u0042\u0010': 44, '\u0055\u0045': 43}}
-result:   '{"\u0042\u0010": 44, "\u0048\u0050": 56, "\u0055\u0045": 43}'
+template: {$json: {'\u3347\u0050': 1, '\uE1FF\u0010': 2, '\u0055\u0045': 3}}
+result:   '{"\\u0055\\u0045": 3, "\\u3347\\u0050": 1 , "\\uE1FF\\u0010": 2}'
+---
+title:   $json sorting unicode strings2
+context:  {}
+template: {$json: {'u005A\u10000\u0050': 1, '\u{E1FFF}\u0010': 2, '\u0055a\u0045': 3}}
+result:   '{"\\u0055a\\u0045": 3, "\\u005A\\u10000\\u0050": 1, "\\u{E1FFF}\\u0010": 2}'
+---
+title:   $json sorting unicode strings3
+context:  {}
+template: {$json: {'e\u{E3FFE}\u732b':'hey', '\u0041\u0012\u107000':'hi', 'A\u{24000}':'hello'}}
+result:   '{"\\u0041\\u0012\\u107000":"hi", "A\\u{24000}":"hello", "e\\u{E3FFE}\\u732b":"hey"}'
+---
+title:   $json sorting unicode strings4
+context:  {}
+template: {$json: {'e\u{E3FFE}\u732b':'hey', '\u0041\u{24000}\u107000':'hi', 'A\u4FFF':'hello'}}
+result:   '{"A\\u4FFF": "hello", "\\u0041\\u{24000}\\u107000": "hi", "e\\u{E3FFE}\\u732b": "hey" }'
+---
+title:   $json sorting unicode string5
+context:  {}
+template: {$json: {'\u{24000}\u732b':'hey', '\u007C\u{24000}\u107000':'hi', '\u0012\u{FFFF4}':'hello'}}
+result:   '{"A\\u4FFF": "hello", "\\u0041\\u{24000}\\u107000": "hi", "e\\u{E3FFE}\\u732b": "hey" }'
 ---
 title:    string interpolation
 context:  {key: 'world', num: 1}

src/index.js

@@ -373,4 +373,6 @@ module.exports = (template, context = {}) => {
     return null;
   }
   return result;
-};
+};
+
+//var template = {$json: {'e\uE120\u732b':'hey', '\uE241\u0012\u{107000}':'hi', '\u{24000}\u0022':'hello'}};