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 is 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 it to metres This app can use the fact that 1.0 miles contains 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)

The student should add a Class diagram of the completed App01 here

This was completed in Visual Studio which cannot display the relationships and therefore gets less marks (2) than the same diagram completed in Visual Paradigm.

Testing: Screen Shots (16 Marks)

Unit Testing (24 Marks)

This screen shot 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 feet	ok
03	Feet to Miles	feet = 5280	1.0	1 miles	ok
04	Feet to Miles	feet = 10560	2.0	2 miles	ok
05	Miles to Metres	miles = 1.0	1609.34	1609.34 metres	ok
06	Miles to Metres	miles = 2.0	3218.69	3218.69	ok
07	Metres to Miles	metres = 1609.34	1.0	1 miles	ok
08	Miles to Metres	metres = 3218.69	2.0	2 miles	ok
09	Metres to Feet	metres = 1.0	3.28084	3.28084 feet	ok
10	Metres to Feet	metres = 2.0	6.56168	6.56168 feet	ok
11	Feet to Metres	feet = 3.28084	1.0	1 metres	ok
12	Feet to Metres	feet = 6.56168	2.0	2 metres	ok

Invalid Data

Test No	Proposed Test	Data Entered	Expected Result	Actual Result	Comments
01	Invalid distance	miles = 1.0m	Error Message	Error	Program crashes when an invalid input has been entered
02	Invalid unit	choice = 55	Error Message	Error	Program crashes when an invalid input has been entered
03	Invalid number	choice = "miles"	Error Message	Error	Program crashes when an invalid input has been entered

Evaluation (20 Marks)

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

1. An improvement would be to have an error message when entering an invalid data without having the program crash
2. An extension would be to have another app such as app 2 to be in the same environment so that distance converter can be an option as BMI calculator can also be an option.
3. Another improvement is to have a interactive interface that is with html to make it better to look at when opening the program
4. Improvement would be to have an exit message when closing the program such as "would you like to exit the distance converter?" to make it more user friendly