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@Test void testAdd() { assertEquals(15, calculator.add(10, 5), "Addition failed"); }

public double divide(double a, double b) { if (b == 0) { throw new ArithmeticException("Cannot divide by zero"); } return a / b; } } Modify App.java to use the Calculator class:

private Calculator calculator = new Calculator();

import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertThrows;

// src/test/java/com/example/CalculatorTest.java

Maven Minx Work [work] May 2026

@Test void testAdd() { assertEquals(15, calculator.add(10, 5), "Addition failed"); }

public double divide(double a, double b) { if (b == 0) { throw new ArithmeticException("Cannot divide by zero"); } return a / b; } } Modify App.java to use the Calculator class:

private Calculator calculator = new Calculator();

import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertThrows;

// src/test/java/com/example/CalculatorTest.java