import staticorg.junit.jupiter.api.Assertions.*;FooService fooService=newFooService();@TestpublicvoiddoStuff_testThrownException(){// null is passed, expected NullPointerExceptionThrowable exception=assertThrows
static void schoolmaster() throws Exception { throw new Exception(); } public static void main(String[] args) { try{ student(); } catch (Exception e) { e.printStackTrace(); } } } /*输出结果是: java.lang.Exception at ExceptionDemo.schoolmaster(ExceptionDemo.java:9) at ExceptionDemo.teac...
也就是说 当程序中可能出现这类异常时,倘若既"没有通过throws声明抛出它",也"没有用try-catch语句捕获它",还是会编译通过。 例如,除数为零时产生的ArithmeticException异常,数组越界时产生的IndexOutOfBoundsException异常,fail-fail机制产生的ConcurrentModificationException异常等,都属于运行时异常。 虽然Java编译器不会...
assertThrows 是Java 中的一个断言方法,用于测试代码是否抛出了预期的异常。这个方法属于 JUnit 测试框架中的一个重要功能,它允许开发者编写测试用例来验证在特定条件下代码是否会正确地抛出异常。 基础概念 assertThrows 方法的基本语法如下: 代码语言:txt 复制 assertThrows(expectedType, executable); expectedType 是...
示例代码(Java) 代码语言:txt 复制 import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertThrows; public class ExampleTest { @Test public void testDivideByZero() { Calculator calculator = new Calculator(); assertThrows(ArithmeticException.class, () -> calculator.di...
public class JavaDemo {public static void main(String args [ ]) throws Exception {int x = 10;// 中间会经过许多的x变量的操作步骤assert x == 100 : "X的内容不是100";System.out.printlr(x);}} 在这个例子中,我们先定义了一个变量x并赋值为 10,然后经过一系列操作,最后断言x的值应该等于 100...
What is Assert in Java? Java assert evaluates a boolean expression and throws an AssertionError exception if the expression returns false after evaluation. This helps surface bugs during the development by verifying that certain conditions hold. Assert plays a vital role in enhancing the robustness ...
How to use assertThrows method in org.junit.Assert Best Java code snippets using org.junit.Assert.assertThrows (Showing top 20 results out of 315) origin: junit-team/junit4 Assert.assertThrows(...)/** * Asserts that {@code runnable} throws an exception of type {@code expectedThrowable...
/*** 自定义异常类:可以通过继承Exception类或已有的异常类 例:某些业务逻辑不合理则可定义成异常*/publicclassMain {publicstaticintcount = 5;//打飞机的次数publicstaticvoidplay()throwsLogicException{/*** 打飞机游戏*/Scanner input=newScanner(System.in);while(true){ ...
import org.junit.rules.ExpectedException; public class JUnit4TestException { @Rule public ExpectedException thrown = ExpectedException.none(); @Test public void test1() throws Exception { Foo foo = new Foo(); thrown.expect(Exception.class); thrown.expectMessage("Exception Message"); foo.foo()...