def simple_test_keyword_in_text(text, keyword, ignore_case=True):
    """
    Simple funtion for testing whether keyword exists in text.
    
    :param text: string to be tested on
    :param keyword: a single keyword interested in
    :param ignore_case: bool value indicates whether to ignore case for both text and keyword
    :return: bool value 
    """
    res = False
    if text and keyword:
        if ignore_case:
            res = True if keyword.lower() in text.lower() else False
        else:
            res = True if keyword in text else False
    return res