Added a test class for StringBuilder.appendEscaped()

JsonGeneratorTests/StringBuilderAppendEscapedTests.cpp

@@ -0,0 +1,66 @@
+#include "CppUnitTest.h"
+#include "StringBuilder.h"
+
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace JsonGeneratorTests
+{
+    TEST_CLASS(StringBuilderAppendEscapedTests)
+    {
+        char buffer[16];
+        StringBuilder* sb;
+
+    public:
+
+        TEST_METHOD_INITIALIZE(Initialize)
+        {
+            sb = new StringBuilder(buffer, sizeof(buffer));
+        }
+        
+        TEST_METHOD(InitialState)
+        {
+            assertResultIs("");
+        }
+
+        TEST_METHOD(EmptyString)
+        {
+            append("");
+            assertResultIs("\"\"");
+        }
+
+        TEST_METHOD(OneString)
+        {
+            append("ABCD");
+            assertResultIs("\"ABCD\"");
+        }
+
+        TEST_METHOD(OneTwoStrings)
+        {
+            append("ABCD");
+            append("EFGH");
+            assertResultIs("\"ABCD\"\"EFGH\"");
+        }
+
+        TEST_METHOD(OverCapacity)
+        {
+            append("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+            assertResultIs("\"ABCDEFGHIJKLM\"");
+        }
+        /*
+        TEST_METHOD(SpecialChars)
+        {
+            append("\\\"\b\f\n\r");
+            assertResultIs("\\\\\\\"\\\b\\\f\\\n\\\r");
+        }
+        */
+        void append(const char* s)
+        {
+            sb->appendEscaped(s);
+        }
+
+        void assertResultIs(const char* expected)
+        {
+            Assert::AreEqual(expected, buffer);
+        }
+    };
+}