System Testing: Conditionals
Paycheck Requirements
Raleigh’s Parks and Recreation Department hires landscapers to care for and maintain the city’s parks.
Skill Level
An employee has one of three skill levels; each with a hourly pay rate:
| Skill Level | Hourly Pay Rate ($) |
|---|---|
| Level 1 | $19.00 |
| Level 2 | $22.50 |
| Level 3 | $25.75 |
Deductions
All employees may opt in for insurance, which results in a deduction from their pay check.
| Deduction | Weekly Cost ($) |
|---|---|
| Option 1 - Medical Insurance | $24.50 |
| Option 2 - Dental Insurance | $15.30 |
| Option 3 - Vision Insurance | $5.25 |
Employees at skill level 3 may also opt to place up to 6% of their gross pay into a retirement account.
Input
The Paycheck program prompts the user for information about the Employee, including the name, level (1, 2, or 3), hours worked, retirement percent, and whether he or she has medical, dental, and vision insurances. This program assumes a perfect user. There is no error checking for user input based on data type.
Output
The following information is printed about the employee’s pay check:
- employee’s name
- hours worked for a week
- hourly pay rate
- regular pay for up to 40 hours worked
- overtime pay (1.5 pay rate) for hours over 40 worked
- gross pay (regular + overtime)
- total deductions
- net pay (gross pay – total deductions).
If the net pay is negative, meaning the deductions exceeds the gross pay, then an error is printed.
Testing Strategies
Test Requirements
When testing a program, you should ensure that all of the customer requirements are tested at least once. Our Paycheck program has the requirement that if the net pay is negative, meaning the deductions exceeds the gross pay, then an error is printed. The following test case would test that requirement. The bold text in the description shows the values the tester would enter into the Paycheck program at the given prompts.
| Test ID | Description | Expected Results | Actual Results |
|---|---|---|---|
| Boundary regular hours, All insurances, Level 1 |
Preconditions: Paycheck program started Employee Name: Alice Anderson Employee Level: 1 Hours Worked: 0 Medical Insurance (Y/N): Y Dental Insurance (Y/N): Y Vision Insurance (Y/N): Y |
Error Message |
Test Equivalence Classes
There are three main groups of input and output in the Paycheck program: skill levels, insurances, and hours worked. For employees of skill level 3, there is also the equivalence class for retirement. For skill levels, there are equivalence classes for skill level 1, skill level 2, skill level 3, and invalid skill level. For each type of insurance, there are two equivalence classes: having insurance and not having insurance. For hours worked, there are three equivalence class: regular hours, overtime hours, and invalid hours (negative).
Skill Level
Our test of the requirements may also satisfy equivalence classes. The test shown in the previous section satisfies the equivalence class for a skill level 1. We can add other tests for skill levels as shown below. Note that to make a complete test execution, we are also providing input for all user input.
| Test ID | Description | Expected Results | Actual Results |
|---|---|---|---|
| Mid-range regular hours, Two insurances, Level 1 |
Preconditions: Paycheck program started Employee Name: Carol Cole Employee Level: 1 Hours Worked: 10 Medical Insurance (Y/N): Y Dental Insurance (Y/N): N Vision Insurance (Y/N): Y |
Name Hours PayRate Regular OT Gross Deduc. Net Carol Cole 10.00 19.00 190.00 0.00 190.00 29.75 160.25 |
|
| Mid-range regular hours, Two insurances, Level 2 |
Preconditions: Paycheck program started Employee Name: Carol Cole Employee Level: 2 Hours Worked: 10 Medical Insurance (Y/N): Y Dental Insurance (Y/N): N Vision Insurance (Y/N): Y |
Name Hours PayRate Regular OT Gross Deduc. Net Carol Cole 10.00 22.50 225.00 0.00 225.00 29.75 195.25 |
|
| Mid-range regular hours, Two insurances, Level 3, Boundary retirement |
Preconditions: Paycheck program started Employee Name: Carol Cole Employee Level: 3 Hours Worked: 10 Medical Insurance (Y/N): Y Dental Insurance (Y/N): N Vision Insurance (Y/N): Y Retirement Percentage (0-6): 1 |
Name Hours PayRate Regular OT Gross Deduc. Net Carol Cole 10.00 25.75 257.50 0.00 257.50 32.32 225.18 |
Insurance
The following two tests also test yes and no for each insurance.
| Test ID | Description | Expected Results | Actual Results |
|---|---|---|---|
| Mid-range regular hours, Two insurances, Level 1 |
Preconditions: Paycheck program started Employee Name: Danny D David Employee Level: 1 Hours Worked: 20 Medical Insurance (Y/N): Y Dental Insurance (Y/N): Y Vision Insurance (Y/N): N |
Name Hours PayRate Regular OT Gross Deduc. Net Danny D David 20.00 19.00 380.00 0.00 380.00 39.80 340.20 |
|
| Boundary regular hours, One insurance, Level 1 |
Preconditions: Paycheck program started Employee Name: Ellen Edwards Employee Level: 1 Hours Worked: 39 Medical Insurance (Y/N): N Dental Insurance (Y/N): N Vision Insurance (Y/N): Y |
Name Hours PayRate Regular OT Gross Deduc. Net Ellen Edwards 39.00 19.00 741.00 0.00 741.00 5.25 735.75 |
Hours Worked
Considering the possible equivalence classes for hours worked other tests of the requirements. For the Paycheck program, we would want at least one middle test that would result in each class. Tests for these equivalence classes are shown below.
| Test ID | Description | Expected Results | Actual Results |
|---|---|---|---|
| Mid-range regular hours, Two insurances, Level 1 |
Preconditions: Paycheck program started Employee Name: Danny D David Employee Level: 1 Hours Worked: 20 Medical Insurance (Y/N): Y Dental Insurance (Y/N): Y Vision Insurance (Y/N): N |
Name Hours PayRate Regular OT Gross Deduc. Net Danny D David 20.00 19.00 380.00 0.00 380.00 39.80 340.20 |
|
| Mid-range overtime hours, No insurance, Level 1 |
Preconditions: Paycheck program started Employee Name: Hilda Henderson Employee Level: 1 Hours Worked: 50 Medical Insurance (Y/N): N Dental Insurance (Y/N): N Vision Insurance (Y/N): N |
Name Hours PayRate Regular OT Gross Deduc. Net Hilda Henderson 50.00 19.00 760.00 285.00 1045.00 0.00 1045.00 |
Test Boundary Values
The input for hours worked for the Paycheck program has two boundaries. We want to test the boundary of 0 and the values to either side. We also want to test the boundary of 40. Some tests for the boundary are shown below.
| Test ID | Description | Expected Results | Actual Results |
|---|---|---|---|
| Boundary regular hours, Two insurances, Level 3, Boundary retirement |
Preconditions: Paycheck program started Employee Name: Bob Baker Employee Level: 3 Hours Worked: 1 Medical Insurance (Y/N): N Dental Insurance (Y/N): Y Vision Insurance (Y/N): Y Retirement Percentage (0-6): 1 |
Name Hours PayRate Regular OT Gross Deduc. Net Bob Baker 1.00 25.75 25.75 0.00 25.75 20.80 4.95 |
|
| Boundary regular hours, One insurance, Level 3, Boundary retirement |
Preconditions: Paycheck program started Employee Name: Ellen Edwards Employee Level: 3 Hours Worked: 39 Medical Insurance (Y/N): N Dental Insurance (Y/N): N Vision Insurance (Y/N): Y Retirement Percentage (0-6): 5 |
Name Hours PayRate Regular OT Gross Deduc. Net Ellen Edwards 39.00 25.75 1004.25 0.00 1004.25 55.46 948.79 |
|
| Boundary regular hours, One insurance, Level 3, Boundary retirement |
Preconditions: Paycheck program started Employee Name: Frank Frankenstein Employee Level: 3 Hours Worked: 40 Medical Insurance (Y/N): Y Dental Insurance (Y/N): N Vision Insurance (Y/N): N Retirement Percentage (0-6): 6 |
Name Hours PayRate Regular OT Gross Deduc. Net Frank Frankenstein 40.00 25.75 1030.00 0.00 1030.00 86.30 943.70 |
|
| Boundary overtime hours, One insurance, Level 3, Mid-range retirement |
Preconditions: Paycheck program started Employee Name: George George Employee Level: 3 Hours Worked: 41 Medical Insurance (Y/N): N Dental Insurance (Y/N): Y Vision Insurance (Y/N): N Retirement Percentage (0-6): 2 |
Name Hours PayRate Regular OT Gross Deduc. Net George George 41.00 25.75 1030.00 38.62 1068.62 36.67 1031.95 |