Added two JUnit sample apps

6 files changed, 140 insertions, 0 deletions

diff --git a/junit/02-maths/.gitignore b/junit/02-maths/.gitignore
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+++ b/junit/02-maths/.gitignore
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+.vscode
+target
diff --git a/junit/02-maths/.mvn/jvm.config b/junit/02-maths/.mvn/jvm.config
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index 0000000..e69de29
--- /dev/null
+++ b/junit/02-maths/.mvn/jvm.config
diff --git a/junit/02-maths/.mvn/maven.config b/junit/02-maths/.mvn/maven.config
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/junit/02-maths/.mvn/maven.config
diff --git a/junit/02-maths/pom.xml b/junit/02-maths/pom.xml
new file mode 100644
index 0000000..bba20e1
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+++ b/junit/02-maths/pom.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.example.maths</groupId>
+  <artifactId>demo</artifactId>
+  <version>1.0-SNAPSHOT</version>
+
+  <name>demo</name>
+  <!-- FIXME change it to the project's website -->
+  <url>http://www.example.com</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.release>25</maven.compiler.release>
+  </properties>
+
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>org.junit</groupId>
+        <artifactId>junit-bom</artifactId>
+        <version>5.11.0</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <!-- Optionally: parameterized tests support -->
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-params</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
+      <plugins>
+        <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
+        <plugin>
+          <artifactId>maven-clean-plugin</artifactId>
+          <version>3.4.0</version>
+        </plugin>
+        <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
+        <plugin>
+          <artifactId>maven-resources-plugin</artifactId>
+          <version>3.3.1</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.13.0</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-surefire-plugin</artifactId>
+          <version>3.3.0</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-jar-plugin</artifactId>
+          <version>3.4.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-install-plugin</artifactId>
+          <version>3.1.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-deploy-plugin</artifactId>
+          <version>3.1.2</version>
+        </plugin>
+        <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
+        <plugin>
+          <artifactId>maven-site-plugin</artifactId>
+          <version>3.12.1</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-project-info-reports-plugin</artifactId>
+          <version>3.6.1</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
+</project>
diff --git a/junit/02-maths/src/main/java/com/example/maths/Maths.java b/junit/02-maths/src/main/java/com/example/maths/Maths.java
new file mode 100644
index 0000000..aac3ac0
--- /dev/null
+++ b/junit/02-maths/src/main/java/com/example/maths/Maths.java
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+package com.example.maths;
+
+public class Maths {
+
+    public int factorial(int number) {
+        if (number == 0) {
+            return 1;
+        }
+
+        return number * factorial(number - 1);
+    }
+
+    public int divide(int a, int b) {
+        return a / b;
+    }
+}
diff --git a/junit/02-maths/src/test/java/com/example/maths/MathsTest.java b/junit/02-maths/src/test/java/com/example/maths/MathsTest.java
new file mode 100644
index 0000000..4396901
--- /dev/null
+++ b/junit/02-maths/src/test/java/com/example/maths/MathsTest.java
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+package com.example.maths;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class MathsTest {
+    private Maths maths;
+
+    @BeforeEach
+    void setUp() {
+        maths = new Maths();
+    }
+
+    @Test
+    void testFactorial() {
+        assertEquals(1, maths.factorial(0), "Factorial of 0");
+        assertEquals(1, maths.factorial(1), "Factorial of 1");
+        assertEquals(120, maths.factorial(5), "Factorial of 5");
+    }
+
+    @Test
+    void testDivideByZeroThrowsException() {     
+        ArithmeticException exception  = assertThrows(ArithmeticException.class, () -> {
+            maths.divide(10, 0);
+        });
+
+        assertEquals("/ by zero", exception.getMessage());
+    }
+}
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