BAEL-1196: jUnit @Test Annotation (#3184)

* BAEL-1196: jUnit @Test Annotation

* Fixed tests names as suggested.

* Reduced visibility on test methods.

testing-modules/junit-5/src/main/java/com/baeldung/junit5/bean/NumbersBean.java

@@ -0,0 +1,22 @@
+package com.baeldung.junit5.bean;
+
+/**
+ * Bean that contains utility methods to work with numbers.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class NumbersBean {
+
+    /**
+     * Returns true if a number is even, false otherwise.
+     * 
+     * @param number
+     *            the number to check
+     * @return true if the argument is even, false otherwise
+     */
+    public boolean isNumberEven(int number) {
+        return number % 2 == 0;
+    }
+
+}

testing-modules/junit-5/src/test/java/com/baeldung/junit5/bean/test/NumbersBeanUnitTest.java

@@ -0,0 +1,43 @@
+package com.baeldung.junit5.bean.test;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import com.baeldung.junit5.bean.NumbersBean;
+
+/**
+ * Test class for {@link NumbersBean}.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class NumbersBeanUnitTest {
+
+	/**
+	 * The bean to test.
+	 */
+	private NumbersBean bean = new NumbersBean();
+
+	/**
+	 * Tests that when an even number is passed to
+	 * {@link NumbersBean#isNumberEven(int)}, true is returned.
+	 */
+	@Test
+	void givenEvenNumber_whenCheckingIsNumberEven_thenTrue() {
+		boolean result = bean.isNumberEven(8);
+
+		Assertions.assertTrue(result);
+	}
+
+	/**
+	 * Tests that when an odd number is passed to
+	 * {@link NumbersBean#isNumberEven(int)}, false is returned.
+	 */
+	@Test
+	void givenOddNumber_whenCheckingIsNumberEven_thenFalse() {
+		boolean result = bean.isNumberEven(3);
+
+		Assertions.assertFalse(result);
+	}
+
+}