App01: Distance Converter

Description

This App allows the user to convert distances measured in one unit of distance into another unit of distance, for example, it will convert a distance measured in miles into the same distance measured in feet.

Features Stage 1

The application should:-

1. Output a heading with the name of the application and the name of the programmer.
2. Input any valid distance measured in miles
3. Convert that distance into feet
4. Output the equivalent distance in feet The input and output should accept numbers that include the decimal point, and this app can use the fact that 1.0 miles are exactly 5280 feet.

Features Stage 2

The application should:-

1. Output a heading with the name of the application and the name of the programmer.
2. Input miles and convert it to feet.
3. Input feet and convert it to miles
4. Input miles and convert them to metres This app can use the fact that 1.0 miles contain 1609.34 metres

Features Stage 3

The Application should:

1. Output a heading with the name of the application and the name of the programmer.
2. Prompt the user to select which unit to convert from (Miles, Feet or Metres)
3. Prompt the user to select which unit to convert to (Miles, feet or Metres)
4. Convert the from distance entered into the to distance using the selected units.
5. Output the distance in the to distance units.

Design: UML Activity Diagram

Stage 1

Stage 3

Design: UML Class Diagram (10 Marks)

Testing: ScreenShots (16 Marks)

Unit Testing (24 Marks)

This screenshot needs replacing by the students own unit testing

Testing: Black Box (30 Marks)

Valid Data

Test No	Proposed Test	Data Entered	Expected Result	Actual Result	Comments
01	Miles to Feet	miles = 1.0	5280	5280	ok
02	Miles to Feet	miles = 2.0	10560	10560	ok
03	Feet to Miles	feet = 5280	1.0	1.0	ok
04	Feet to Miles	feet = 10560	2.0	2.0	ok
05	Miles to Metres	miles = 1.0	1609.34	1609.34	ok
06	Miles to Metres	miles = 1.0	3218.69	3218.69	ok
07	Metres to Miles	metres = 1609.34	1.0	1.0	ok
08	Miles to Metres	metres = 3218.69	2.0	2.0	ok
09	Metres to Feet	metres = 1.0	3.28084	3.28084	ok
10	Metres to Feet	metres = 2.0	6.56168	6.56168	ok
11	Feet to Metres	feet = 3.28084	1.0	1.0	ok
12	Feet to Metres	feet = 6.56168	2.0	2.0	ok

Invalid Data

Test No	Proposed Test	Data Entered	Expected Result	Actual Result	Comments
01	Invalid distance	miles = 1.0m	Error Message	No Error Message	Sends me straight back into code
02	Invalid unit	choice = 55	Error Message	No Error Message	Sends me straight back into code
03	Invalid number	choice = "miles"	Error Message	No Error Message	Sends me straight back into code

Evaluation (20 Marks)

The student should add five limitations or useful extensions that could be added to the application

1. My Application is limited to only Miles, Metres and Feet when there are many other metrics.
2. The addition of other measurements could be a good improvement.
3. Another improvement could be making the application more interactive for instance, instead of entering numbers to select measurements, you could simply click.
4. Also, for some number you have to enter to convert, I noticed it needed a decimal place and sometimes the user may not remember to add one. So, making it so that a single number can stand-alone may be more efficient.
5. One more limitation could be that the programme itself is not engaging enough and may not attract people users, due to its lack of design and aesthetics.