我在 src/test/resources/feature/中有以下功能文件(单独的功能文件)，我想并行运行它们。比如:一个功能文件必须在 chrome 中执行，另一个必须在 firefox 中执行，如@Tags 名称所述。

Feature: Refund item

@chrome
  Scenario: Jeff returns a faulty microwave
    Given Jeff has bought a microwave for $100
    And he has a receipt
    When he returns the microwave
    Then Jeff should be refunded $100

Feature: Refund Money

@firefox
  Scenario: Jeff returns the money
    Given Jeff has bought a microwave for $100
    And he has a receipt
    When he returns the microwave
    Then Jeff should be refunded $100

有人可以帮助我实现这一点。我正在使用 cucumber-java 1.2.2 版本，并将 AbstractTestNGCucumberTests 用作运行者。另外，让我知道如何使用功能文件动态创建测试运行器并使它们并行运行。

最佳答案

更新:4.0.0 版本可在 maven 中央存储库中获得，其中包含大量更改。 for more details go here.

更新:2.2.0 版本可在 maven 中央存储库中获得。

您可以使用开源插件 cucumber-jvm-parallel-plugin与现有解决方案相比具有许多优势。可在 maven repository

   <dependency>
     <groupId>com.github.temyers</groupId>
     <artifactId>cucumber-jvm-parallel-plugin</artifactId>
     <version>2.1.0</version>
   </dependency>

1. 首先，您需要在您的项目 pom 文件中添加具有所需配置的此插件。

   <plugin>
     <groupId>com.github.temyers</groupId>
     <artifactId>cucumber-jvm-parallel-plugin</artifactId>
     <version>2.1.0</version>
     <executions>
        <execution>
        <id>generateRunners</id>
        <phase>generate-test-sources</phase>
        <goals>
          <goal>generateRunners</goal>
        </goals>
        <configuration>
            <!-- Mandatory -->
            <!-- comma separated list of package names to scan for glue code -->
            <glue>foo, bar</glue>
            <outputDirectory>${project.build.directory}/generated-test-sources/cucumber</outputDirectory>
             <!-- The directory, which must be in the root of the runtime classpath, containing your feature files.  -->
              <featuresDirectory>src/test/resources/features/</featuresDirectory>
             <!-- Directory where the cucumber report files shall be written  -->
             <cucumberOutputDir>target/cucumber-parallel</cucumberOutputDir>
             <!-- comma separated list of output formats json,html,rerun.txt -->
             <format>json</format>
             <!-- CucumberOptions.strict property -->
             <strict>true</strict>
             <!-- CucumberOptions.monochrome property -->
             <monochrome>true</monochrome>
             <!-- The tags to run, maps to CucumberOptions.tags property you can pass ANDed tags like "@tag1","@tag2" and ORed tags like "@tag1,@tag2,@tag3" -->
            <tags></tags>
            <!-- If set to true, only feature files containing the required tags shall be generated. -->
            <filterFeaturesByTags>false</filterFeaturesByTags>
            <!-- Generate TestNG runners instead of default JUnit ones. --> 
            <useTestNG>false</useTestNG>
            <!-- The naming scheme to use for the generated test classes.  One of 'simple' or 'feature-title' --> 
           <namingScheme>simple</namingScheme>
           <!-- The class naming pattern to use.  Only required/used if naming scheme is 'pattern'.-->
           <namingPattern>Parallel{c}IT</namingPattern>
           <!-- One of [SCENARIO, FEATURE]. SCENARIO generates one runner per scenario.  FEATURE generates a runner per feature. -->
           <parallelScheme>SCENARIO</parallelScheme>
           <!-- This is optional, required only if you want to specify a custom template for the generated sources (this is a relative path) -->
           <customVmTemplate>src/test/resources/cucumber-custom-runner.vm</customVmTemplate>
           </configuration>
          </execution>
        </executions>
      </plugin>
   

2. 现在在插件上面添加下面的插件，它将调用上面插件生成的运行器类

       <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
           <version>2.19</version>
           <configuration> 
               <forkCount>5</forkCount>
               <reuseForks>true</reuseForks>
               <includes>
                   <include>**/*IT.class</include>
               </includes>
           </configuration>
       </plugin>
   

3. 以上两个插件将为并行运行的 cucumber 测试发挥神奇作用(前提是您的机器还具有高级硬件支持)。

4. 严格提供<forkCount>n</forkCount>这里的“n”与 1) 高级硬件支持和 2) 可用节点(即向 HUB 注册的浏览器实例)成正比。

5. 一个主要和最重要的变化是您的 WebDriver 类必须共享并且您应该不实现 driver.quit() 方法，因为关闭时要小心通过关闭 Hook 。

   import cucumber.api.Scenario;
   import cucumber.api.java.After;
   import cucumber.api.java.Before;
   import org.openqa.selenium.OutputType;
   import org.openqa.selenium.WebDriver;
   import org.openqa.selenium.WebDriverException;
   import org.openqa.selenium.firefox.FirefoxDriver;
   import org.openqa.selenium.support.events.EventFiringWebDriver;
   
   public class SharedDriver extends EventFiringWebDriver {
       private static WebDriver REAL_DRIVER = null;
   
   
   
       private static final Thread CLOSE_THREAD = new Thread() {
           @Override
           public void run() {
               REAL_DRIVER.close();
           }
       };
   
       static {
           Runtime.getRuntime().addShutdownHook(CLOSE_THREAD);
       }
   
       public SharedDriver() {
           super(CreateDriver());
       }
   
       public static WebDriver CreateDriver() {
           WebDriver webDriver;
           if (REAL_DRIVER == null)
               webDriver = new FirefoxDriver();
           setWebDriver(webDriver);
           return webDriver;
       }
   
       public static void setWebDriver(WebDriver webDriver) {
           this.REAL_DRIVER = webDriver;
       }
   
       public static WebDriver getWebDriver() {
           return this.REAL_DRIVER;
       }
   
       @Override
       public void close() {
           if (Thread.currentThread() != CLOSE_THREAD) {
               throw new UnsupportedOperationException("You shouldn't close this WebDriver. It's shared and will close when the JVM exits.");
           }
           super.close();
       }
   
       @Before
       public void deleteAllCookies() {
           manage().deleteAllCookies();
       }
   
       @After
       public void embedScreenshot(Scenario scenario) {
           try {
               byte[] screenshot = getScreenshotAs(OutputType.BYTES);
               scenario.embed(screenshot, "image/png");
           } catch (WebDriverException somePlatformsDontSupportScreenshots) {
               System.err.println(somePlatformsDontSupportScreenshots.getMessage());
           }
       }
   }
   

6. 考虑到您想要执行超过 50 个线程，即相同数量的浏览器实例已注册到 HUB，但如果 Hub 没有获得足够的内存，Hub 就会死掉，因此为避免这种危急情况，您应该使用 -DPOOL_MAX 启动 hub =512(或更大)如 grid2 documentation 中所述.

   Really large (>50 node) Hub installations may need to increase the jetty threads by setting -DPOOL_MAX=512 (or larger) on the java command line.

   java -jar selenium-server-standalone-<version>.jar -role hub -DPOOL_MAX=512

关于java - 如何并行执行 cucumber 功能文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41034116/