如何在不同瀏覽器和標籤下並行執行Cucumber特徵檔？

並行執行Cucumber 特徵檔

問題： 需要並行執行多個Cucumber 特徵文件，每個特徵檔案與不同的標籤相關聯，將特定文件指派給特定瀏覽器。

解決方案：

利用開源cucumber-jvm-parallel-plugin提供了一個功能-用於並行黃瓜測試執行的豐富解決方案。

1. 外掛程式設定：

將下列外掛程式設定加入專案的Maven pom 檔案：

<code class="xml"><dependency>
    <groupId>com.github.temyers</groupId>
    <artifactId>cucumber-jvm-parallel-plugin</artifactId>
    <version>2.1.0</version>
</dependency>
<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>
                <glue>foo, bar</glue>
                <outputDirectory>${project.build.directory}/generated-test-sources/cucumber</outputDirectory>
                <featuresDirectory>src/test/resources/features/</featuresDirectory>
                <cucumberOutputDir>target/cucumber-parallel</cucumberOutputDir>
                <format>json</format>
                <strict>true</monochrome>true</strict>
                <tags>@chrome,@firefox</tags>
                <filterFeaturesByTags>false</filterFeaturesByTags>
                <useTestNG>false</useTestNG>
                <namingScheme>simple</namingScheme>
                <parallelScheme>SCENARIO</parallelScheme>
            </configuration>
        </execution>
    </executions>
</plugin></code>

2. 新增第二個插件：

新增另一個插件，該插件將呼叫上一個插件產生的運行器類別：

<code class="xml"><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></code>

共享WebDriver 類別：

實作共用WebDriver 類別：

<code class="java">public class SharedDriver extends EventFiringWebDriver {

    // Singleton WebDriver instance
    private static WebDriver REAL_DRIVER = null;

    // Closing hook for WebDriver
    private static final Thread CLOSE_THREAD = new Thread() {
        @Override
        public void run() {
            REAL_DRIVER.close();
        }
    };

    // WebDriver setup
    static {
        Runtime.getRuntime().addShutdownHook(CLOSE_THREAD);
    }

    public SharedDriver() {
        super(CreateDriver());
    }

    public static WebDriver CreateDriver() {
        if (REAL_DRIVER == null)
            REAL_DRIVER = new FirefoxDriver();
        setWebDriver(REAL_DRIVER);
        return REAL_DRIVER;
    }

    public static void setWebDriver(WebDriver webDriver) {
        SharedDriver.REAL_DRIVER = webDriver;
    }

    public static WebDriver getWebDriver() {
        return SharedDriver.REAL_DRIVER;
    }

    // Disable closing for shared driver
    @Override
    public void close() {
        if (Thread.currentThread() != CLOSE_THREAD) {
            throw new UnsupportedOperationException("Closing is handled by shutdown hook.");
        }
        super.close();
    }
}</code>

實作共用WebDriver 類別：

注意事項：
• Grid Hub 必須以 -DPOOL_MAX=512 或更高層級啟動才能執行大量（>50）執行緒並行。

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