Unit test my code

Now is the time for serious thing - unit testing. To make sure I'm doing the right thing with my code. Frankly speaking, implementing unit test in C++ is my first time. Not even heard of it in the past. Wasting a lot of my time discovering C++ unit test framework, surprisingly, Boost's test framework was quite user friendly.

To adopt this thing into my project, I've come an idea that is suited for my test case. The idea like this, for each test case, 2 folders will be created to mimic the source location and destination location. Thus I have a class named PrepareFile for this purpose, the constructor will invoke when each test case begins, and the destructor will invoke when the test case has ended:

class PrepareFile
{
public:
    PrepareFile() {
        create_directory("path_A");
        create_directory("path_B");

        BOOST_TEST_MESSAGE("Creating test folder");
    }
    ~PrepareFile() {
        remove_all("path_A");
        remove_all("path_B");

        BOOST_TEST_MESSAGE("Removing test folder");
    }
};

/*  Test case: Cap_T1
 *  Test scenario: path_A has one file
 *  Test result: one file is captured in index file
 */
BOOST_FIXTURE_TEST_CASE(Cap_T1, PrepareFile)
{
    ...
}

/*  Test case: Cap_T2
 *  Test scenario: path_A has one file, path_B has one file.
 *  Test result: files in both paths has captured in index file.
 */
BOOST_FIXTURE_TEST_CASE(Cap_T2, PrepareFile)
{
    ...
}

I like this test framework structure because it could provide me a clean test environment. Anyhow, this is just a tiny test in my code, SIT effort is still required.