Question

我有以下两个步骤定义：

[When(@"I Schedule a Start Now Event named ""(.*)"" for the DR program named ""(.*)""")]

[When(@"I Schedule a Start Now Event named ""(.*)"" for the DR program named ""(.*)"" with load control device ""(.*)""")]

在场景中使用上述两个步骤定义时，我可以看到第二步定义无法绑定。

这是因为，当我注释掉第二步定义时，我的步骤将按以下方式对第一步定义进行投标：

When I Schedule a Start Now Event named "~@+Event" for the DR program named "~@=Program" with load control device "Light"

术语"~@=Program" with load control device "Light"被假定为单个字符串值。但它不应该是。

它应该与第二步定义绑定。

这是一个正则表达式模式问题吗？

Answer 1

它是一个正则表达式模式问题，但也是一个相当普遍的问题。

基本上正则表达式.*被称为贪婪。它会匹配它出现的所有内容，直到某些东西强迫它不匹配。艾伦摩尔建议使用引号将非常有效。另一个是使用不包含空格的名称，然后你可以使用[^ ]*意思匹配许多不是空格。

我实际上建议您可以更轻松地使用较小的语句构建查询。例如

Given a DR program called xxx
And a load control device xxx
When I schedule a Start now event named xxx

private string drProgramName;
private string loadControlDevice;

[Given("a DR program called (.*)"]
public void GivenADRProgramCalled(string name)
{
  drProgamName = name;
}

[Given("a load control device (.*)"]
public void GivenALoadControlDevice(string name)
{
  loadControlDevice = name;
}

[When("I schedule a start now event named (.*)")]
public void WhenIScheduleAStartNowEventNamed(string name)
{
  WhenIScheduleAStartNowEventNamed(name, drProgamName, loadControlDevice);
}

Answer 2

在我看来，你需要更加具体：

[When(@"I Schedule a Start Now Event named ""([^""]*)"" for the DR program named ""([^""]*)""")]

[When(@"I Schedule a Start Now Event named ""([^""]*)"" for the DR program named ""([^""]*)"" with load control device ""([^""]*)""")]

让*不情愿也可能会这样做：

[When(@"I Schedule a Start Now Event named ""(.*?)"" for the DR program named ""(.*?)""")]

[When(@"I Schedule a Start Now Event named ""(.*?)"" for the DR program named ""(.*?)"" with load control device ""(.*?)""")]

...但是否定的角色类更加万无一失。免责声明：我自己不是SpecFlow用户，但this blog post似乎证实了我的猜测。

Answer 3

这篇Blog帖真的解决了我的问题。干杯艾伦!!

模糊的步骤定义

3 个答案: