Keirsey-Bates Temperament Scorer


The Keirsey-Bates Temperament Survey is a personality inventory instrument.  To get an idea of what it is like, you may want to complete the online Keirsey-Bates Temperament Scorer.  Plan to take about 20 minutes.  When you finish the survey, you will be shown a results page with an interpretation of your temperament.

OVERVIEW

You are to write a program that will assist in analyzing responses to the 70 question Keirsey-Bates Temperament Survey. It scores the responses and produces a personality "type" according to the scoring formula in the Keirsey-Bates textbook.

INPUT via parameter

  A 70 character string representing a response to each item in the survey instrument.  Each character is 'A' or 'B', a response to one of the survey questions. Note: it's assumed that the responses are in the same order as the 70 questions on the survey.

OUTPUT via return value

  A 4 character string, containing one of the Keirsey-Bates types, or "ERR!" if there was invalid input.

FUNCTIONS

  Use the Keirsey-Bates scoring directions.

ERROR HANDLING

Return "ERR!" if the Responses input is not 'A' or 'B' or if there are not exactly 70 characters.

IMPLEMENTATION CONSTRAINTS

  Your Java class must be named KeirseyScorer.  The scoring function must be a static method with the following signature:
       public static String evaluateSurvey(String responses)
  

TESTING

You must provide your own JUnit tests that cause 100% branch coverage.  (Obviously, the tests must pass.)
Here's an example: 
    public void testTwo()
    {
        String data1 = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
        assertEquals("ESTJ",KeirseyScorer.evaluateSurvey(data1));
    }
COLLABORATION OKAY

On this project you may consult with other students or work together to design a solution. Each student must submit their own individual work. If you are feeling out of practice with Java programming, you may want to work in the lab with a peer to cooperatively resolve problems that arise.

SUBMISSION

Submit a zip file containing your source code and JUnit tests to the Web-CAT grader. Make sure you provide a correct @author javadoc tag in every file you submit. The grader will run your unit tests, run the instructor's tests, and check for conformance to the class coding standard.

GRADING
Updated 1/9/15

90% of the grade is the Web-CAT score,
10% of the grade is instructor evaluation of the algorithm design.

Web-CAT
The "Correctness/Testing" portion of the score must be 80/80.
You can earn 20 additional points for the "Style/Coding" portion of the score by and conforming to the class coding standard.
You are allowed 20 submissions to Web-CAT.

Design
You should use the project as a chance to refresh your Java programming skills and practice writing modular, maintainable code. Consult the algorithm design guidelines. Since this is a class on data structures, you should strive to find a solution that uses a data structure that helps you reduce the amount of logic in your algorithm. If there is any redundant code in your solution you will earn a zero for the design part of the grade. For reference, you should aim for a solution that contains less than 100 logical lines of code. Proficient students have achieved solutions containing less than 50 LOC. Check the course resources page to download the instructor's LOC counting tool.