如何将自定义数据类型传递给Cucumber-jvm Stepdef中的最新4.x版本



我最近在项目中已升级到Cucumber-jvm的最新4.x版本,以利用Cucumber的并行执行功能。但是我现在面临着将自定义数据类型作为参数的问题。早些时候,我们有一个称为Transformer的接口,我们可以为自定义数据类型实现,现在在我发现的TypeRegistryConfigurer接口的最新版本中,需要实现。但这并没有像我预期的那样认识到这一步骤。详细信息如下:

小黄瓜步骤:

Given user gets random(3,true,true) parameter

stepdefinition:

@Given("user gets {random} parameter")
public void paramTest(RandomString randomString) {
    System.out.println(randomString.string); 
}

随机串类:

public class RandomString {
public String string;
public RandomString(String string) {
    Matcher m = Pattern.compile("random\((.?)\)").matcher(string);
    String t = "";
    while (m.find()) {
        t = m.group(1);
    }
    boolean isAlpha = true, isNum = true;
    if (t.length() > 0) {
        String[] placeholders = t.split(",");
        if (placeholders.length == 3) {
            int count = Integer.parseInt(placeholders[0]);
            isAlpha = Boolean.valueOf(placeholders[1]);
            isNum = Boolean.valueOf(placeholders[2]);
            this.string = string.replaceAll("random(.*)", RandomStringUtils.random(count, isAlpha, isNum));
        }
    }
    this.string = string.replaceAll("random(.*)", RandomStringUtils.random(3, isAlpha, isNum));
}
}

typeregistrympl:

public class TypeRegistryConfiguration implements TypeRegistryConfigurer {
    @Override
    public Locale locale() {
        return Locale.ENGLISH;
    }
    @Override
    public void configureTypeRegistry(TypeRegistry typeRegistry) {
        typeRegistry.defineParameterType(new ParameterType<>(
                "random",
                "random([0-9],true|false,true|false)",
                RandomString.class,
                RandomString::new)
        );
    }
}

您的字符串random(3,true,true)与以下方式不匹配:

typeRegistry.defineParameterType(new ParameterType<>(
        "random",
        "random([0-9],true|false,true|false)", 
        RandomString.class,
        RandomString::new)
);

您可以通过创建模式并测试它来验证这一点:

import java.util.regex.Pattern;
class Scratch {
    public static void main(String[] args) {
        Pattern pattern = Pattern.compile("random([0-9],true|false,true|false)");
        // prints out false
        System.out.println(pattern.matcher("random(3,true,true)").matches());
    }
}

您也没有在RandomString中使用匹配模式。

我在试验后找到了解决方案,并在Cucumber-JVM项目中的某些单元测试中击中并浏览了一些示例。

修改 stepdef

@Given("user gets {random} parameter")
public void paramTest(String randomString) {
    System.out.println(randomString.string); 
}

typeregistryconfigurer实现:

import cucumber.api.TypeRegistry;
import cucumber.api.TypeRegistryConfigurer;
import io.cucumber.cucumberexpressions.CaptureGroupTransformer;
import io.cucumber.cucumberexpressions.ParameterType;
import org.apache.commons.lang3.RandomStringUtils;
import java.util.Locale;
public class TypeRegistryConfiguration implements TypeRegistryConfigurer {
    @Override
    public Locale locale() {
        return Locale.ENGLISH;
    }
    @Override
    public void configureTypeRegistry(TypeRegistry typeRegistry) {
        typeRegistry.defineParameterType(new ParameterType<>(
                "random",
                "random\(([0-9]+),(true|false),(true|false)\)",
                String.class,
                new CaptureGroupTransformer<>() {
                    @Override
                    public String transform(String[] args) {
                        return RandomStringUtils.random(Integer.parseInt(args[0]), Boolean.valueOf(args[1]), Boolean.valueOf(args[2]));
                    }
                })
        );
    }
}

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