King Saud University
College of Computer and Information Sciences
Department of Information Technology
CAP312 – Software Engineering II
Second Semester 1432/1433 H
Assignment #3
Software Testing
Q1. Using your java, C# or other programming language skill, derive a checklist of common errors (NOT
syntax errors) that could not be detected by a compiler but that could be detected in a program inspection?
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Dynamic variables are cleared properly when they’re no longer needed
Recursive functions have logic to prevent infinite recursion
Iterative loops have logic to prevent infinite loops
Variables are not in danger of being too limited with large numbers
Logic statements are defined correctly
Q2. An item in inventory can have a quantity of - 9999 to + 9999, identify the test cases from this
specification using partition testing.
The equivalence partitions are:
1. If x < -9999
2. If -9999 ≤x ≤+9999
3. If x > +9999
Test cases: {-10,000, -9999, 0, +9999, +10,000}
Q3. According to the following discount table, derive the test cases using partition testing
The Discount Table
Age
Discount
0-4 years
100%
5-15 years
50%
16-64 years
0%
Older than 64 years
25%
The equivalence partitions are:
1.
2.
3.
4.
If 0<=age<=4
If 5<=age<=15
If 16<=age<=64
If 64<age
Test cases: {0, 2, 4, 5, 10, 15, 16, 40, 64, 65}
Q4. You have been asked to test a method called ‘catWhiteSpace’ in a ‘Paragraph’ object that, within the
paragraph, replaces sequences of blank characters with a single blank character. Identify testing partitions
for this example and derive a set of tests for the ‘catWhiteSpace’ method.
Testing partitions are:
 Strings with only single blank characters
 Strings with sequences of blank characters in the middle of the string
 Strings with sequences of blank characters at the beginning/end of string
Examples of tests:
The quick brown fox jumped over the lazy dog (only single blanks)
The quick brown
fox
jumped over the
lazy dog (different numbers of blanks in the sequence)
The quick brown fox jumped over the lazy dog (1st blank is a sequence)
The quick brown fox jumped over the lazy
dog (Last blank is a sequence)
The quick brown fox jumped over the lazy dog (2 blanks at beginning)
The quick brown fox jumped over the lazy dog (several blanks at beginning)
The quick brown fox jumped over the lazy dog (2 blanks at end)
The quick brown fox jumped over the lazy dog
Etc.
(several blanks at end)