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White-Box Testing Assignment - BustedClass Java Exercise

Dive into white-box testing with Assignment 6, exploring structural coverage techniques using Java. Learn how to design methods to reveal faults, achieve branch coverage, statement coverage, and more.

<h3>Assignment 6: White-Box Testing Techniques</h3>
Goals:
<ul>
<li style="font-size: 14pt;">Familiarize yourself with white-box testing methodologies.</li>
<li style="font-size: 14pt;">Understand the intricacies of structural coverage in Java.</li>
</ul>
<hr>
<h4>Preliminary Setup</h4>
Download the archive <code>assignment 6.tar.gz</code>. This will create a directory called <code>Assignment6</code> in the root of your repository. The directory includes:
<ul>
<li style="font-size: 14pt;">BustedClass.java: A skeleton class you need to complete.</li>
<li style="font-size: 14pt;">ExampleTestSC1.java: Example JUnit test class.</li>
<li style="font-size: 14pt;">JUnit library: <code>junit-platform-console-standalone-1.9.1.jar</code> for testing.</li>
</ul>
<hr>
<h4>Task Instructions</h4>
After reading all instructions, complete the following tasks in the <code>BustedClass</code> class as described:
<hr>
<h4>Task 1: Implementing bustedMethod1</h4>
<ul>
<li style="font-size: 14pt;">Create a method, <code>bustedMethod1</code>, that includes a division-by-zero fault and at least two branches.</li>
<li style="font-size: 14pt;">Requirements:
<ul>
<li style="font-size: 14pt;">Develop a test suite achieving 100% branch coverage without revealing the fault.</li>
<li style="font-size: 14pt;">Create another suite with 100% statement coverage but less than 100% branch coverage, revealing the fault.</li>
</ul>
</li>
<li style="font-size: 14pt;">JUnit Classes:
<ul>
<li style="font-size: 14pt;">BustedClassTestBC1: Should achieve 100% branch coverage for <code>bustedMethod1</code>.</li>
<li style="font-size: 14pt;">BustedClassTestSCBC1: Should achieve 100% statement coverage and reveal the fault.</li>
</ul>
</li>
<li style="font-size: 14pt;">Save these classes in <code><dir>/test</code>.</li>
</ul>
<hr>
<h4>Task 2: Implementing bustedMethod2</h4>
<ul>
<li style="font-size: 14pt;">Create <code>bustedMethod2</code>, containing a division-by-zero fault with the following properties:
<ul>
<li style="font-size: 14pt;">Every possible 100% branch coverage suite should reveal the fault.</li>
<li style="font-size: 14pt;">It is possible to create a suite with 100% statement coverage that does not reveal the fault.</li>
</ul>
</li>
<li style="font-size: 14pt;">JUnit Classes:
<ul>
<li style="font-size: 14pt;">BustedClassTestBC2: Achieves 100% branch coverage and reveals the fault.</li>
<li style="font-size: 14pt;">BustedClassTestSC2: Achieves 100% statement coverage and does not reveal the fault.</li>
</ul>
</li>
<li style="font-size: 14pt;">Save these classes in <code><dir>/test</code>.</li>
</ul>
<hr>
<h4>Task 3: Implementing bustedMethod3</h4>
<ul>
<li style="font-size: 14pt;">Create <code>bustedMethod3</code> to meet these conditions:
<ul>
<li style="font-size: 14pt;">A test suite can achieve 100% path coverage and reveal the fault.</li>
<li style="font-size: 14pt;">No suite with 100% branch coverage reveals the fault.</li>
</ul>
</li>
<li style="font-size: 14pt;">JUnit Classes:
<ul>
<li style="font-size: 14pt;">BustedClassTestPC3: Achieves 100% path coverage and reveals the fault.</li>
<li style="font-size: 14pt;">BustedClassTestBC3: Achieves 100% branch coverage and does not reveal the fault.</li>
</ul>
</li>
<li style="font-size: 14pt;">Save these classes in <code><dir>/test</code>.</li>
</ul>
<hr>
<h4>Task 4: Testing Method bustedMethod4</h4>
The <code>bustedMethod4</code> method (provided) must be tested to cover both statement and MC/DC coverage.
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</div>
</div>
<div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre hljs language-java">public static int bustedMethod4(boolean a, boolean b, int c, int d, int e) {
 int result = 0;
 if (a != b) {
 if ((c < 0) && (d == 0) || (e > 0)) {
 result = 1;
 } else {
 result = 2;
 }
 } else {
 result = 3;
 }
 return result;
}
</code></div>
</div>
<ul>
<li style="font-size: 14pt;">JUnit Classes:
<ul>
<li style="font-size: 14pt;">BustedClassTestSC4: Achieves 100% statement coverage with no more than 3 test cases.</li>
<li style="font-size: 14pt;">BustedClassTestMCDC4: Achieves 100% MC/DC coverage with a maximum of 8 test cases.</li>
</ul>
</li>
<li style="font-size: 14pt;">Bonus: Achieve 100% MC/DC coverage with the minimum possible test cases for bonus points.</li>
<li style="font-size: 14pt;">Save these classes in <code><dir>/test</code>.</li>
</ul>
<hr>
<h4>Task 5: Analyzing bustedMethod5</h4>
Evaluate the following method <code>bustedMethod5</code> with its provided test table and sentences.
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</div>
</div>
<div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre hljs language-java">public static boolean bustedMethod5(boolean a, boolean b) {
 int x;
 int y;
 if (a) {
 x = 0;
 } else {
 x = 2;
 }
 if (b) {
 y = 2*x - x;
 } else {
 y = 1;
 }
 return ((x*2)/y > 0);
}
</code></div>
</div>
<ul>
<li style="font-size: 14pt;">Table and Sentences:
<ul>
<li style="font-size: 14pt;">Replace "?" in the output column with “T” (True), “F” (False), or “E” (Error).</li>
<li style="font-size: 14pt;">Update sentences with “NEVER,” “SOMETIMES,” or “ALWAYS” based on the coverage criteria revealing the fault.</li>
</ul>
</li>
</ul>
<hr>
<h4>Important Notes</h4>
<ol>
<li style="font-size: 14pt;">All methods should compile with Java 17 and adhere to prohibited constructs (e.g., no compound predicates, nested if statements, or loops).</li>
<li style="font-size: 14pt;">Use the provided JUnit library.</li>
<li style="font-size: 14pt;">Manual coverage calculation is recommended, as tools may differ slightly in their definitions.</li>
</ol>
Assignment 6 challenges students to explore the mechanics of white-box testing, encouraging a nuanced understanding of structural coverage and fault revelation within Java-based systems.

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White-Box Testing Assignment - BustedClass Java Exercise

Dive into white-box testing with Assignment 6, exploring structural coverage techniques using Java. Learn how to design methods to reveal faults, achieve branch coverage, statement coverage, and more.

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