SDD : Testing

Question 1

The main reasons for testing

Answer 1

• To identify errors
• To ensure that software is fit for purpose
• To ensure that code is efficient
• To ensure that code is maintainable

Question 2

Test Data - Normal

Answer 2

This is data that the program should be expected to use in normal operation

Question 3

Test data - Extreme

Answer 3

This is data at the edge of what is acceptable, such as high and low limits or boundaries

Question 4

Test Data - Exceptional

Answer 4

This is invalid data. Robust programs should reject this

Question 5

A test Plan

Answer 5

A test plan is a set of test data which should systematically and comprehensively test the software to ensure that it meets the original specification.

Will include, normal, extreme and exceptional data

Question 6

Syntax error

Answer 6

These are mistakes in the programming ‘grammar’ e.g. forgetting to put a semi colon or close a bracket.

Question 7

Execution error

Answer 7

An execution error is one which causes te program to stop when it is run e.g. divide by zero, trying to writing to file which does not exist.

Question 8

Logical error

Answer 8

An error in the logic of the code such as using ˂ instead of ˃ or AND instead of OR. The program will execute the code but will produce unexpected results.

Question 9

Dry run

Answer 9

A dry run is a manual run through pseudocode or the source code of the program

Question 10

Brekapoints

Answer 10

A breakpoint is a set at a point in a program where it will stop execution so that the values of variables can be examined;

Question 11

Watchpoint

Answer 11

Watchpoints are assigned to variables. They stop the execution of the program when a variable changes or when the contents of a specific variable or expression meets a paarticular condition.