1. Designing a Method and Test Program
In this session you will:
See how using testing templates can speed up code magnet lab development
Write the function you want students to construct and adapt one of the provided templates to suit your needs
Implement and test your method outside of WAGS

2. Available Test Templates
Parameter Type(s)
Return Type
Sample Method
integer
iterative Fibonacci
boolean
prime checker
integer, integer
combinations C(n,r)
integer array
longest consecutive increasing streak
Integer array
more positives than negatives
Integer, integer array
Remove int value from int array
string
# of digit characters in string
is string a palindrome
remove all non-alphabetic characters
character, string
# of characters greater than the character parameter
double array
double
variance
double array, double array
Pearson correlation coefficient
Select your desired signature now for your microlab method.

3. Step One: Download and Unzip Files
The appropriate files can be downloaded from under workshop resources
There are four Java files involved
<<signature>>Test.java – this is heart of the test program; does not need modification
ParamDataAndInvocations.java –This file will be modified as described in the steps outlined below
CorrectMethod.java – this file contains a correct version of the method being implemented
Student.java – another copy of the correct method; if not in the download then make it yourself

4. Step Two: Get Demo Program Working
Use your favorite IDE (Eclipse, NetBeans, etc.)
Create a Java Project
Do not use a package (use a default)
Load the files <<signature>>Test.java, ParamDataAndInvocations.java, CorrectMethod.java, and Student.java
Compile and run the main program: <<signature>>Test.java; NOTE: you will get an error message about a missing argument
Verify that everything worked as expected

5. Step Three: Implement Your Method
Modify the sample method in CorrectMethod.java to the method you want students to implement
Put a copy of this method in Student.java

6. Step Four: Set Parameters & Invocations
Modify test data and method invocation
public class ParamDataAndInvocations {
int[] numData = {5, 3, 8, 1, 0};
public int invokeCorrectMethod(CorrectMethod myCorrectMethod,int n){
return myCorrectMethod.iterativeFibonacci(n); }
public int invokeStudentMethod(Student student,int n){
return student.iterativeFibonacci(n);
This example had a single integer parameter; your template may be different
Put the name of the method in the CorrectMethod.java file here.
Put the name of the method in the Student.java file here.

7. Step Five: Run Your Program
Make sure your method is compiled and runs correctly
Make sure your parameter data includes limiting cases for the method you have designed, such as an empty string if you had a string parameter
Modify the method in the Student class to create an error; make sure you test cases detect the error
If you are done and the workshop hasn’t proceeded to the next session; repeat the above process for a second method.