Test UTF-16 output of GetUserName

tests/test-getusername.cpp

@@ -1,7 +1,14 @@
+#include <string>
+#include <vector>
 #include <unistd.h>
 #include <gtest/gtest.h>
+#include <scxcorelib/scxstrencodingconv.h>
 #include "getusername.h"
 
+using std::string;
+using std::vector;
+using SCXCoreLib::Utf16leToUtf8;
+
 TEST(GetUserName,simple)
 {
 	// allocate a WCHAR_T buffer to receive username
@@ -14,10 +21,17 @@ TEST(GetUserName,simple)
 	ASSERT_EQ(1, result);
 
 	// get expected username
-	const char *username = getlogin();
+	string username = string(getlogin());
 
 	// GetUserName sets lpnSize to length of username including null
-	ASSERT_EQ(strlen(username)+1, lpnSize);
+	ASSERT_EQ(username.size()+1, lpnSize);
 
-	// TODO: ASSERT_STREQ(username, Utf16leToUtf8(lpBuffer))
+	// copy UTF-16 bytes from lpBuffer to vector for conversion
+	vector<unsigned char> input(reinterpret_cast<unsigned char *>(&lpBuffer[0]),
+	                            reinterpret_cast<unsigned char *>(&lpBuffer[lpnSize-1]));
+	// convert to UTF-8 for assertion
+	string output;
+	Utf16leToUtf8(input, output);
+
+	EXPECT_EQ(username, output);
 }