I get only 5 tests, conveniently I see that there are five possible lots to choose from in the ParkCalc UI. The requirements are also in a nice tidy group of 5. Clearly, this isn’t the only way to structure the tests, but as of right now it seems like a decent place to start based on the information I have. Since I’m limited to 5 tests, I want these to be powerful. By powerful, I mean I want each test to have the possibility to expose multiple issues, provide multiple types of information, and be representative of how a person might actually use the app (according to my imagination).

So here goes, here are my five tests

**Valet Parking**

*Requirements:*

$18 per day

$12 for five hours or less

*Test values:*

Start: 01:32am 01/09/2014

End: 06:32am 01/13/2014

Total time: 4 days 5 hours 0 minutes

Expectation: (18*4)+12 = $84

Result: $84

*Some stuff I think this test tells us:*

non-round numbers for time handled

$18 / day calculation

$12 / <= 5 hours calculation
**Short-term hourly parking**

*Requirements:*

$2.00 first hour; $1.00 each additional 1/2 hour

$24.00 daily maximum

*Test values:*

Start: 01:32am 01/09/2014

End: 04:17am 01/10/2014

Total time: 1 day 2 hours 45 minutes

Expectation: 24+2+2+1 = $29

Result = $30

This seems to have exposed a bug. I didn’t spend much time investigating what the bug is but I did notice that the cost of full days and 1/2 hours is not how it is described in the spec. In the app, a full day costs $26 and 1/2 hour (after the first hour) cost $2.

*Some stuff I think this test tells us:*

full day calc

first hour calc

additional 1/2 hour calc

info about rounding to 1/2 hour

**Long-term garage parking**

*Requirements:*

$2.00 per hour

$13.00 daily maximum

$78.00 per week (7th day free)

*Test values:*

Start: 1:32am 1/9/2014

End: 4:02am 1/17/2014

Total time: 8 days 2 hours 30 minutes

Expectation: 78 + 13 + 6 = $97

Result: 97

*Some stuff I think this test tells us:*

week calc

day calc

hour calc

info about rounding for times between one hour

**Long Term Surface Parking**

*Requirements:*

$2.00 per hour

$10.00 daily maximum

$60.00 per week (7th day free)

*Test values:*

Start: 1:32am 1/9/2014

End: 4:02am 1/17/2014

Total time: 8 days 2 hours 30 minutes

Expectation: 60 + 10 + 6 = $76

Result: $76

*Some stuff I think this test tells us:*

**Economy lot parking**

*Requirements:*

$2.00 per hour

$9.00 daily maximum

$54.00 per week (7th day free)

*Test values:*

Start: 1:32am 1/9/2014

End: 4:02am 1/17/2014

Total time: 8 days 2 hours 30 minutes

Expectation: 54 + 9 + 6 = $69

Result: $69

*Some stuff I think this test tells us:*

week calc

day calc

hour calc

info about rounding for times between one hour

**Recap:**

So, 5 tests and one bug was the outcome here. I’m pretty pleased about finding a bug of course but I’m not so sure I would call the software unfit for use because of this. I suppose that all depends on the person using the software. My opinion is that the difference in calculation is slight, and if the actual amount charged from the lot it correct, then it’s all good.

**What skill(s) does this exercise help develop?**

I’ll just make this a list of the stuff that jumps out at me:

domain testing

scenario testing

testing directed by a specific mission

note taking

thinking critically about how a bug affects a person(s) / thinking about value

describing the purpose(s) of a test

creating powerful tests