如何执行黄瓜function文件并行

我在src / test / resources / feature /中有下面的特性文件（独立的特性文件），我想并行运行它们。 就像：一个function文件必须在Chrome中执行，另一个function文件必须在firefox中执行@Tags名称。

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目标。我使用cucumber-java 1.2.2版本，并使用AbstractTestNGCucumberTests作为runner。 另外，让我知道如何通过使用function文件dynamic创build一个Test Runner，并使它们并行运行。

Answer 1

黄瓜不支持开箱即用的并行执行。 我试过了，但不友善。

1. 我们必须使用maven的能力来并行调用它。 参考链接
2. 还有一个github项目使用自定义插件并行执行。 请参阅cucumber-jvm-parallel-plugin

Answer 2

更新： 4.0.0版本可以在maven中央仓库中进行一系列更改。 欲了解更多细节去这里。

更新： 2.2.0版本可在maven中央仓库中使用。

你可以使用开源插件cucumber-jvm-parallel-plugin ，它比现有的解决scheme有许多优点。 在Maven 仓库中可用

  <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configuration的插件。

    <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. 现在在下面的plugin下方添加plugin，它将调用上面的插件生成的runner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黄瓜testing做好准备（前提是你的机器也有先进的硬件支持）。

4. 严格提供<forkCount>n</forkCount>这里'n'与1）高级硬件支持和2）您可用的节点，即注册的浏览器实例到HUB成正比。

5. 一个主要和最重要的变化是你的WebDriver类必须是SHARED ，你不应该实现driver.quit（）方法，因为closures是由关机挂钩。

    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. 考虑到你想执行超过50个线程，即没有浏览器实例注册到HUB，但如果没有获得足够的内存，集线器将会死亡，因此为了避免这种危急情况，你应该启动集线器，使用-DPOOL_MAX = 512（或更大）如grid2文档中所述 。

   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

Answer 3

如果你所期望的是能够并行运行多个function，那么你可以尝试执行以下操作：

• 复制testing项目中的AbstractTestNGCucumberTests类，并将@DataProvider注释方法的属性parallel=true 。

由于TestNG的默认dataprovider-thread-count是10 ，现在你已经指示TestNG并行运行features ，所以你应该开始看到你的function文件并行执行。

但我明白，黄瓜报告本质上不是线程安全的，所以你的报告可能会出现乱码。