junit | 易学教程

Unable to run Selenium HtmlUnitDriver test (java.net.SocketException)

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问题 Im in the process of learning how to use Selenium to automate we browsers and working my way through an online course. Im currently having some problems trying to run a headless browser test using the HtmlUnitDriver I have a simple test that should load a web page and assert the title, code as follows. package com.seleniumsimplified.webdriver; import org.junit.Test; import org.openqa.selenium.WebDriver; import org.openqa.selenium.htmlunit.HtmlUnitDriver; import static org.junit.Assert

JUnit单元测试

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简介 JUnit是一个开源的java语言的单元测试框架专门针对java语言设计, 使用最广泛, JUnit是标准的单元测试架构 java单元测试是最小的功能单元测试代码, 单元测试就是针对单个java方法的测试目的确保单个方法正常运行测试代码可以作为示例代码可以自动化运行所有测试并获得报告 Maven依赖 <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> 项目结构断言在 JDK 1.4 之后， Java 中增加了断言的功能，关键字 assert 断言是java的一种语句，它允许对程序提出一个判断（假设）。断言包含一个布尔表达式，在程序运行中它应该是真。假设程序期望得到某个结果，如果没达成则报错。断言用于确保程序的正确性，避免逻辑错误。与异常处理类似，断言不能代替正常的检验，只是检测内部的一致性和有效性。断言在运行是检验，可以在程序启动时打开或关闭。 PS：不要在正常的业务逻辑中使用断言。对于程序正确性的判断可以在测试环境使用断言，生成环境则可以关闭该功能。期望之外的结果： import org.junit.Assert; /** * @author wzm * @version 1.0.0 *

Testing Java Spark Microservices app that implements SparkApplication interface

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问题 I am trying to figure out how to test a web/rest services written in Java Spark and there is not many tutorials on how to do that. It is tricky to find answers due to confusion between Apache Spark and Java Spark . I came across this resource but, I couldn't get it to work the way I had expected. There is also this resource and examples in Java Spark github but they all probably use embedded server. Anyway, Assuming that I have the following service public class RestService implements

Testing Java Spark Microservices app that implements SparkApplication interface

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How to write junit test cases for rest controller, service and dao layer using springboot?

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问题 How to write JUnit Test cases for RestController , Service and DAO layer ? I've tried MockMvc @RunWith(SpringRunner.class) public class EmployeeControllerTest { private MockMvc mockMvc; private static List<Employee> employeeList; @InjectMocks EmployeeController employeeController; @Mock EmployeeRepository employeeRepository; @Test public void testGetAllEmployees() throws Exception { Mockito.when(employeeRepository.findAll()).thenReturn(employeeList); assertNotNull(employeeController

How to write junit test cases for rest controller, service and dao layer using springboot?

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Compilation error using Hamcrest everyItem()

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问题 I'm trying to use hasKey() on everyItem() in Hamcrest but I am getting the following compilation error: error: no suitable method found for assertThat(List<Map<String,Object>>,Matcher<Iterable<Map<? extends String,?>>>) assertThat(data, everyItem(hasKey("index"))); ^ method Assert.<T#1>assertThat(T#1,Matcher<? super T#1>) is not applicable (actual argument Matcher<Iterable<Map<? extends String,?>>> cannot be converted to Matcher<? super List<Map<String,Object>>> by method invocation

How to Unit-Test Thread which takes time to perform action

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问题 I have Thread which runs while the program runs and polls a queue and check whether it has object and if yes then it calls method on the object Here is the code : while(isRunning){ synchronized (loginQueue) { if(loginQueue.peek() != null) { Object[] loginObjectWithConnection = loginQueue.poll(); tryLogin(loginObjectWithConnection); } } try { Thread.sleep(10); } catch (InterruptedException e) { e.printStackTrace(); } } Here is the tryLogin method private void tryLogin(Object[]

How to mock getResourceAsStream method using PowerMockito and JUnit?

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问题 I try to mock getResourceAsStream method which I invoke in constructor. public Conn() { stream = Conn.class.getClass().getResourceAsStream(PATH); } For mock framework I prefer Mockito + PowerMockito. @RunWith(PowerMockRunner.class) @PrepareForTest(Conn.class) public class ConnTest { @Mock private InputStream streamMock; private Conn conn; @Before public void before() { initMocks(this); } @Test public void test() { PowerMockito.mockStatic(Conn.class); PowerMockito.when(Connector.class

Test class not found in selected project

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问题 Currently I am developing a simple program using Cucumber that will test logging in of a user on a website. Here is my TestRunner file: package cucumberTest; import org.junit.runner.RunWith; import cucumber.api.CucumberOptions; import cucumber.api.junit.Cucumber; @RunWith(Cucumber.class) @CucumberOptions(features = "Feature") public class TestRunner { } I also have the cucumber file as LogIn_Test.feature as follows: Feature: Login Action Scenario: Successful Login with Valid Credentials Given