Question

我有这样的特征声明：

    Feature: find taxi and minicabs information
  in order to get taxi and minicabs contact at given location
  as application developer
  I want to find tax and minicabs contact information at given location or query options

  Scenario Outline: find taxi and minicabs contact information
    Given Joe at location with <lat> and <lon>
    When get all taxi and minicabs contacts information
    Then should see list of taxi and minicabs
    And all of them are at location with <lat> and <lon>
    Examples:
      | lat       | lon       |
      | 51.490075 | -0.133226 |

我有这样的步骤定义：

@Given("^Joe at location with ([+-]?([0-9]+[.])?[0-9]+) and ([+-]?([0-9]+[.])?[0-9]+)$")
public void joeAtLocationWithLatAndLon(Number lat, Number lon) throws Throwable {
  ....
}

我预计我可以收到2个参数，但Cucumber传递给我4个参数。错误信息如下：

 with pattern [^Joe at location with ([+-]?([0-9]+[.])?[0-9]+) and ([+-]?([0-9]+[.])?[0-9]+)$] is declared with 2 parameters. However, the gherkin step has 4 arguments [51.490075, 51., -0.133226, 0.].

你对此有任何想法吗？顺便说一句，如果你能解释黄瓜识别参数数量的方式或者分享我的任何文件，我非常感谢。

Answer 1

问题是正则表达式中的两个内括号。使用当前的正则表达式，你将得到2组 - 一个整体“51.490075”和第二个“51”。它匹配([0-9]+[.])部分中的exp。因此创建了4个参数。

删除内部括号，每个只有一个参数，总共两个。

你将要遇到的下一个问题是，除非你告诉它，否则黄瓜不知道如何将String转换为Number类。为此，您需要使用Transform注释并为此创建一个特定的类。

import cucumber.api.Transformer;

public class NumberTransformer extends Transformer<Number>{

    @Override
    public Number transform(String value) {
        return Double.parseDouble(value);
    }
}

@Given("^Joe at location with ([+-]?[0-9]+[.]?[0-9]+) and ([+-]?[0-9]+[.]?[0-9]+)$")
    public void joeAtLocationWithAnd(@Transform(NumberTransformer.class)Number arg1, @Transform(NumberTransformer.class)Number arg2) throws Exception {
        System.out.println(arg1);
        System.out.println(arg2);
    }

对于转换问题，您还可以查找xstreams。如果您使用黄瓜2，使用Xstreamconvertor注释可以更轻松地进行这种转换 - https://github.com/cucumber/cucumber-jvm/pull/1010

将错误数量的参数从Gherkin要素文件映射到步骤定义

1 个答案: