junit | 易学教程

Intellij IDEA code coverage doesn't work

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问题 When I'm trying to run my JUnit tests with coverage I receive the following error FATAL ERROR in native method: processing of -javaagent failed java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at sun.instrument

Syntax error: insert “enum Identifier”, insert “EnumBody”, inset “}”

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问题 I coded an enum type which brings up the following Syntax errors when I run my created JUnit test for it: java.lang.Error: Unresolved compilation problems: Syntax error, insert "enum Identifier" to complete EnumHeaderName Syntax error, insert "EnumBody" to complete EnumDeclaration Syntax error, insert "}" to complete ClassBody My enum type has static functions which for a particular String, returns an enum constant. Here is some of my code of the enum type: public enum MusicType { ACCIDENTAL,

Test lambda expressions called by dependencies

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问题 I am trying to test some code inside lambda expression which is a call back from another class. class EmailSender { private EmailBuilder emailBuilder; public void send() { String testEmail = emailBuilder.buildEmail("Test Email", bodyContentAppender()); //send testEmail } private Consumer<Email> bodyContentAppender() { //how to test this through JUnit? return email -> email.appendBody("Body Content"); } } interface EmailBuilder { String buildEmail(String templateName, Consumer<Email>

Run JUnit tests from a dependency jar in Eclipse

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问题 I have some JUnit tests that contained in a .jar that is intended to be used as a library. The library contains some tests that should be run whenever the library is used in another project. However when I create a new project using the library and run JUnit on it in Eclipse then the tests in the dependency .jar don't run / don't get detected by the JUnit test runner. I get the message: No tests found with test runner 'JUnit 4'. Is there a way I can configure the dependency .jar so that the

NUnit: How to pass TestCaseData from a non-static method?

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问题 my test fails because of : Message: The sourceName specified on a TestCaseSourceAttribute must refer to a static field, property or method. This is my Code: const double MAX_DELTA = 0.01; Qv_ges qv_ges_NE; double Sum_Qv_ges_R_FL; Qv_ges Qv_ges_Quer; [SetUp] public void init() { qv_ges_NE = Din1946.Calc_Qv_ges_NE(205.7d); Sum_Qv_ges_R_FL = 15d + 15d + 15d + 15d + 15d + 10d + 10d + 10d + 10d + 10d + 10d + 10d; Qv_ges_Quer = Din1946.Calc_Qv_ges_Quer(qv_ges_NE, Sum_Qv_ges_R_FL); } public

How to mock persisting and Entity with Mockito and jUnit

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问题 I'm trying to find a way to test my entity using Mockito; This is the simple test method: @Mock private EntityManager em; @Test public void persistArticleWithValidArticleSetsArticleId() { Article article = new Article(); em.persist(article); assertThat(article.getId(), is(not(0L))); } How do I best mock the behaviour that the EntityManager changes the Id from 0L to i.e. 1L? Possibly with the least obstructions in readability. Edit: Some extra information; Outside test-scope the EntityManager

How to mock persisting and Entity with Mockito and jUnit

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Junit5常用注解

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0. IDEA中Maven项目测试类的新建方法 a. 如图在src目录下新建文件夹test b. 鼠标右键test，将该文件设置成test source c. 右键需要新建的测试类，如下图操作，选中Test，即可新建测试类。 1. @BeforeEach与@BeforeAll @BeforeEach 在运行类测试时，每个方法执行前都会执行一次此注解修饰的方法； @BeforeAll 在以运行类测试时，所有方法执行前仅执行一次此注解修饰的方法； 2.@Order和@TestMethodOrder 此注解主要用于使测试的方法顺序执行，需要与@TestMethodOrder结合使用，示例如下： import org.junit.jupiter.api.MethodOrderer.OrderAnnotation; import org.junit.jupiter.api.Order; import org.junit.jupiter.api.Test; import org.junit.jupiter.api.TestMethodOrder; @TestMethodOrder(OrderAnnotation.class) class OrderedTestsDemo { @Test @Order(1) void nullValues() { // perform assertions

JUnit5 快速指南

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JUnit5 快速指南 version: junit5  1. 安装 2. JUnit 注解 3. 编写单元测试 3.1. 基本的单元测试类和方法 3.2. 定制测试类和方法的显示名称 3.3. 断言（Assertions） 3.4. 假想（Assumptions） 3.5. 禁用 3.6. 测试条件 3.7. 嵌套测试 3.8. 重复测试 3.9. 参数化测试 4. 引用和引申  1. 安装在 pom 中添加依赖 <properties> <junit.jupiter.version>5.3.2</junit.jupiter.version> </properties> <dependencies> <dependency> <groupId>org.junit.jupiter</groupId> <artifactId>junit-jupiter-api</artifactId> <version>${junit.jupiter.version}</version> <scope>test</scope> </dependency> <dependency> <groupId>org.junit.jupiter</groupId> <artifactId>junit-jupiter

No tasks available when executing JUnit runner class

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问题 I am trying to run Cucumber feature files in IntelliJ. Cucumber Options is pointing to the right folder, but I get the "No tasks available" notification when trying to execute the JUnit runner class. What am I doing wrong? Here is my build.gradle : plugins { id 'java' } sourceCompatibility = 1.8 apply plugin: 'java' repositories { mavenCentral() } compileJava.options.encoding = "UTF-8" dependencies { compile 'org.codehaus.groovy:groovy-all:2.3.11' testCompile group: 'junit', name: 'junit',