#define BOOST_TEST_MODULE  DLCL_Tests 
#include <boost/test/unit_test.hpp>
#include <boost/test/included/unit_test.hpp>

// new to catch output
#include <boost/test/tools/output_test_stream.hpp>

#include "DListT.h"

// so we can use the elements of the output_test_stream without 
// a horrid list of namespaces
using boost::test_tools::output_test_stream;
using namespace std;


BOOST_AUTO_TEST_SUITE( DLCL_Methods_Tests)

void BadDataTest(DListT & list) {
    output_test_stream output;
    string errorMessage = "Error: Attempt to access Empty List.\n";

    // change stdout to be the new output buffer
    streambuf * old = cout.rdbuf(output.rdbuf());

    // force the error
    string x = list.Data();

    // restore cout.
    cout.rdbuf(old);

    BOOST_TEST(x == "NO DATA");
    BOOST_TEST(output.is_equal(errorMessage,false));
    BOOST_TEST(output.check_length(errorMessage.size(), false));
    BOOST_TEST(!output.is_empty(false));

    return;
}

BOOST_AUTO_TEST_CASE(DLCL_Constructor_Test) {
    DListT aList;
    
    BOOST_TEST(aList.Size() == 0);
    BadDataTest(aList);

    aList.Right();
    BadDataTest(aList);

    aList.Home();
    BadDataTest(aList);

    aList.Left();
    BadDataTest(aList);
}

BOOST_AUTO_TEST_SUITE_END()