Added test of an empty string

JsonGenerator/IndentedPrintDecorator.cpp

@@ -7,5 +7,5 @@
 
 size_t IndentedPrintDecorator::write(uint8_t c)
 {
-    return print.write(c);
+    return sink.write(c);
 }

JsonGenerator/IndentedPrintDecorator.h

@@ -13,7 +13,7 @@ class IndentedPrintDecorator : public Print
 public:
 
     IndentedPrintDecorator(Print& p)
-        : currentLevel(0), print(p)
+        : currentLevel(0), sink(p)
     {
     }
 
@@ -21,6 +21,6 @@ public:
 
 private:
     int currentLevel;
-    Print& print;
+    Print& sink;
 };
 

JsonGeneratorTests/IntentedPrintTests.cpp

@@ -0,0 +1,42 @@
+/*
+* Arduino JSON library
+* Benoit Blanchon 2014 - MIT License
+*/
+
+#include "CppUnitTest.h"
+#include "IndentedPrintDecorator.h"
+#include "StringBuilder.h"
+
+using namespace ArduinoJson::Internals;
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace JsonGeneratorTests
+{
+	TEST_CLASS(IntentedPrintTests)
+	{
+        char buffer[256];
+
+	public:
+		
+		TEST_METHOD(EmptyString)
+		{
+            whenInputIs("");
+            outputMustBe("");
+		}
+
+    private:
+
+        void whenInputIs(const char input[])
+        {
+            StringBuilder sb(buffer, sizeof(buffer));
+            IndentedPrintDecorator decorator(sb);
+
+            decorator.print(input);
+        }
+
+        void outputMustBe(const char* expected)
+        {
+            Assert::AreEqual(expected, buffer);
+        }
+	};
+}

JsonGeneratorTests/JsonGeneratorTests.vcxproj

@@ -85,6 +85,7 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="EscapedStringTests.cpp" />
+    <ClCompile Include="IntentedPrintTests.cpp" />
     <ClCompile Include="Issue10.cpp" />
     <ClCompile Include="JsonArrayTests.cpp" />
     <ClCompile Include="JsonObject_Indexer_Tests.cpp" />

JsonGeneratorTests/JsonGeneratorTests.vcxproj.filters

@@ -39,5 +39,8 @@
     <ClCompile Include="Issue10.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="IntentedPrintTests.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>