Fix some bugs

lib/src/objects.dart

@@ -98,9 +98,9 @@ class Radical {
 
   Map<String, dynamic> toJson() =>
     {
-    'symbol': symbol,
-    'forms': forms,
-    'meaning': meaning
+      if (symbol != null) 'symbol': symbol,
+      if (forms != null) 'forms': forms,
+      if (meaning != null) 'meaning': meaning
     }; 
 
 }
@@ -116,14 +116,42 @@ class KanjiResult {
   String meaning;
   List<String> kunyomi;
   List<String> onyomi;
-  List<YomiExample> onyomiExamples;
   List<YomiExample> kunyomiExamples;
+  List<YomiExample> onyomiExamples;
   Radical radical;
   List<String> parts;
   String strokeOrderDiagramUri;
   String strokeOrderSvgUri;
   String strokeOrderGifUri;
   String uri;
+
+  Map<String, dynamic> toJson() {
+
+    if (found == false) return {
+      'query': query,
+      'found': found
+    };
+
+    return {
+      'query': query,
+      'found': found,
+      'taughtIn': taughtIn,
+      'jlptLevel': jlptLevel,
+      'newspaperFrequencyRank': newspaperFrequencyRank.toString(),
+      'strokeCount': strokeCount,
+      'meaning': meaning,
+      'kunyomi': kunyomi,
+      'onyomi': onyomi,
+      'onyomiExamples': onyomiExamples.map((onyomiExample) => onyomiExample.toJson()).toList(),
+      'kunyomiExamples': kunyomiExamples.map((kunyomiExample) => kunyomiExample.toJson()).toList(),
+      'radical': radical.toJson(),
+      'parts': parts,
+      'strokeOrderDiagramUri': strokeOrderDiagramUri,
+      'strokeOrderSvgUri': strokeOrderSvgUri,
+      'strokeOrderGifUri': strokeOrderGifUri,
+      'uri': uri
+    };
+  }
 }
 
 class ExampleSentencePiece {

lib/src/unofficial_jisho_api_base.dart

@@ -8,9 +8,9 @@ final htmlUnescape = html_entities.HtmlUnescape();
 
 // TODO: Put public facing types in this file.
 
-const String JISHO_API = 'https://jisho.org/api/v1/search/words';
-const String SCRAPE_BASE_URI = 'https://jisho.org/search/';
-const String STROKE_ORDER_DIAGRAM_BASE_URI = 'https://classic.jisho.org/static/images/stroke_diagrams/';
+const String JISHO_API = 'http://jisho.org/api/v1/search/words';
+const String SCRAPE_BASE_URI = 'http://jisho.org/search/';
+const String STROKE_ORDER_DIAGRAM_BASE_URI = 'http://classic.jisho.org/static/images/stroke_diagrams/';
 
 /* KANJI SEARCH FUNCTIONS START */
 

test/local_function_test_cases.dart

@@ -17,20 +17,20 @@ void test_local_functions() async {
 
   test('uriForKanjiSearch', () {
     final result = uriForKanjiSearch('時');
-    expect(result, 'https://jisho.org/search/%E6%99%82%23kanji');
+    expect(result, 'http://jisho.org/search/%E6%99%82%23kanji');
   });
 
   test('getUriForStrokeOrderDiagram', () {
     final result = getUriForStrokeOrderDiagram('時');
-    expect(result, 'https://classic.jisho.org/static/images/stroke_diagrams/26178_frames.png');
+    expect(result, 'http://classic.jisho.org/static/images/stroke_diagrams/26178_frames.png');
   });
 
   test('uriForPhraseSearch', () {
     final result = uriForPhraseSearch('時間');
-    expect(result, 'https://jisho.org/api/v1/search/words?keyword=%E6%99%82%E9%96%93');
+    expect(result, 'http://jisho.org/api/v1/search/words?keyword=%E6%99%82%E9%96%93');
   });
 
-  final kanjiPage = (await http.get('https://jisho.org/search/%E6%99%82%23kanji')).body;
+  final kanjiPage = (await http.get('http://jisho.org/search/%E6%99%82%23kanji')).body;
 
   test('containsKanjiGlyph', () {
     final result = containsKanjiGlyph(kanjiPage, '時');
@@ -277,10 +277,10 @@ void test_local_functions() async {
       meaning: 'sun, day'
     );
     expectedResult.parts = ['土', '寸', '日'];
-    expectedResult.strokeOrderDiagramUri = 'https://classic.jisho.org/static/images/stroke_diagrams/26178_frames.png';
+    expectedResult.strokeOrderDiagramUri = 'http://classic.jisho.org/static/images/stroke_diagrams/26178_frames.png';
     expectedResult.strokeOrderSvgUri = 'http://d1w6u4xc3l95km.cloudfront.net/kanji-2015-03/06642.svg';
-    expectedResult.strokeOrderGifUri = 'https://raw.githubusercontent.com/mistval/kanji_images/master/gifs/3c.gif';
-    expectedResult.uri = 'https://jisho.org/search/%E6%99%82%23kanji';
+    expectedResult.strokeOrderGifUri = 'https://raw.githubusercontent.com/mistval/kanji_images/master/gifs/6642.gif';
+    expectedResult.uri = 'http://jisho.org/search/%E6%99%82%23kanji';
 
     expect(
       json.encode(result),

test/unofficial_jisho_api_test.dart

@@ -22,7 +22,7 @@ void runTestCases(List<String> testCaseFiles, String apiFunction) async {
       switch(apiFunction) {
         case 'searchForKanji': {
           final result = await jisho.searchForKanji(testCase['query']);
-          expect(result, jsonDecode(testCase['expectedResult']));
+          expect(result.toJson(), testCase['expectedResult']);
           break;
         }
         case 'searchForExamples': {