首先,创建一个待测试的类,这里实现了一个简单的加法计算器
public class Calculator { public int evaluate(String expression) { int sum = 0; for (String summand : expression.split("\\+")) sum += Integer.valueOf(summand); return sum; } }
接着,新建测试类
public class CalculatorTest { @Test public void test() { Calculator calculator = new Calculator(); int sum = calculator.evaluate("1+2+3"); assertEquals(6, sum); } }
运行,run as JUnit Test