import fileio;

var PATH: string const = "scripts:/lib/file/fileio.txt";

// test global constants
{
    assert MAX_FILENAME_SIZE > 0, "MAX_FILENAME_SIZE failed";
    assert MAX_FILES_OPEN > 0, "MAX_FILES_OPEN failed";
    assert END_OF_FILE == -1, "END_OF_FILE failed";
}

// test open and close
{
    var reader = open(PATH, "r");
    assert reader != null, "open failed on existing file";

    var file = open("scripts:/doesNotExist", "r");
    assert file == null, "open failed on nonexisting file";
    
    assert reader.close() == true, "close failed";
}

// test append
{
    var appender = open(PATH, "a");
    assert appender.write("appended text") == true, "append failed";

    appender.close();

    var writer = open(PATH, "w");
    writer.write("Hello, World!\n");

    writer.close();
}

// test rename
{
    var reader = open(PATH, "r");
    assert reader.rename("scripts:/lib/file/newName.txt") == true, "rename failed";

    reader.close();
}

// test seek
{
    var reader = open(PATH, "r");
    assert reader.seek("set", 6) == true, "seek failed";

    var contents = reader.read(string);
    assert contents == " World!\n", "seek failed to move";

    reader.close();
}

// test accessors
{
    var reader = open(PATH, "r");

    assert reader.error() == false, "error failed";
    assert reader.completed() == false, "completed failed";
    assert reader.position() == 0, "position failed";
    assert reader.size() == 14, "size failed";
    assert reader.mode() == "r", "mode failed"; 

    reader.read(string);

    // assert reader.error() == false, "error failed";
    // assert reader.completed() == true, "completed failed"; // Leaks for some reason?
    // assert reader.position() == 14, "position failed";
    // assert reader.size() == 13, "size failed";
    // assert reader.mode() == "r", "mode failed"; 

    reader.close();
}

// test write
{
    assert output.write(8), "write int failed";
    assert output.write("\n"), "write string failed";
    assert output.write(12.5), "write float failed";
}

// test read
{
    output.write("\n");

    // enter 8
    assert input.read(int) == 8, "read int failed";

    // enter 12.5
    assert input.read(float) == 12.5, "read float failed";

    // enter test
    assert input.read(string) == "test\n", "read string failed";

    // invaild types
    assert input.read(type) == null, "type failed";
    assert input.read(any) == null, "any failed";
}