fix #104 generate valid lists in strong mode

Author: a14n

example/example.g.dart

@@ -232,7 +232,7 @@ String _writeAccessToVar(String varExpression, DartType searchType,
 
     var itemVal = "v$depth";
 
-    var output = "($varExpression as List)?.map(($itemVal) =>"
+    var output = "($varExpression as List)?.map(($itemVal) => "
         "${_writeAccessToVar(itemVal, iterableGenericType, depth: depth+1)}"
         ")";
 
@@ -243,6 +243,10 @@ String _writeAccessToVar(String varExpression, DartType searchType,
     return output;
   }
 
+  if (!searchType.isDynamic) {
+    return "$varExpression as $searchType";
+  }
+
   return varExpression;
 }
 

lib/generators/json_serializable_generator.dart

@@ -101,6 +101,16 @@ void main() {
 
       expect(output, contains('(json[\'children\'] as List)?.map('));
     });
+
+    test('class with list of int is cast for strong mode', () async {
+      var element = await _getClassForCodeString('Person');
+      var output = await _generator.generate(element, null);
+
+      expect(output, isNotNull);
+
+      expect(output,
+          contains("json['listOfInts'] as List)?.map((v0) => v0 as int)"));
+    });
   });
 
   test('reads JsonKey annotations', () async {
@@ -154,6 +164,7 @@ class Person {
   DateTime dateOfBirth;
   dynamic dynamicType;
   var varType;
+  List<int> listOfInts;
 }
 
 @JsonSerializable()

test/json_serializable_test.dart

@@ -54,6 +54,7 @@ class Item extends Object with _$ItemSerializerMixin {
   final int price;
   int itemNumber;
   List<DateTime> saleDates;
+  List<int> rates;
 
   Item([this.price]);