How do you test code that uses primitive types?

Testing code that uses primitive types can be accomplished by writing unit tests that cover the various operations and behaviors associated with those types. Primitive types in Java—such as int, double, boolean, and char—can be easily tested to verify their correctness and expected behavior. Below is an example of how to test a simple method that uses primitive types.

import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.*; public class PrimitiveTypeTest { public int add(int a, int b) { return a + b; } public boolean isPositive(int number) { return number > 0; } @Test public void testAdd() { assertEquals(5, add(2, 3)); assertEquals(0, add(0, 0)); assertEquals(-1, add(-3, 2)); } @Test public void testIsPositive() { assertTrue(isPositive(5)); assertFalse(isPositive(0)); assertFalse(isPositive(-3)); } }

Java Unit Testing Primitive Types JUnit Assertions