Test empty nested arrays

JsonGenerator/IndentedPrintDecorator.cpp

@@ -11,9 +11,21 @@ size_t IndentedPrintDecorator::write(uint8_t c)
     {
     case '{':
     case '[':
-        indent++;
+              
+        size_t n;
+
+        if (previousChar == '{' || previousChar == '[')
+        {
+            n = writeln() + sink.write(c);
+        }
+        else
+        {
+            n = sink.write(c);
+        }
+
         previousChar = c;
-        return sink.write(c);
+        indent++;
+        return n;
 
     case '}':
     case ']':

JsonGeneratorTests/Intented_Array_Tests.cpp

@@ -44,6 +44,16 @@ namespace JsonGeneratorTests
                 "]");
         }
 
+        TEST_METHOD(EmptyNestedArrays)
+        {
+            whenInputIs("[[],[]]");
+            outputMustBe(
+                "[\n"
+                " [],\n"
+                " []\n"
+                "]");
+        }
+
     private:
 
         void whenInputIs(const char input[])