Cucumber sending string list as parameter

Question

I am using cucumber 4.3.0 and I would like to send an ArrayList of String in one of my sentences. It would give something like that:

Given I am on page <page>
When I do stuff
Then keywords "toto, tata, titi" are here

So far, I have thought of splitting the String "toto, tata, titi" into an Array (using "," as separator) however, I'm wondering if there are any cleaner solution?

I have tried doing this:

Given I am on page <page>
When I do stuff
Then the following keywords are here: toto, tata, titi

With

@Then("^the following keywords are here: (.*)$")
public void theFollowingKeywordsAreHere(List<String> datas) {
     //some code
}

But I get the following error:

cucumber.runtime.CucumberException: Could not convert arguments for step ...
...
Caused by: io.cucumber.cucumberexpressions.CucumberExpressionException: ParameterType {anonymous} failed to transform [toto, tata, titi, tutu] to java.util.List<java.lang.String>

---

So, any idea on how to make that work without using the string split solution?

Answer 1

For me it works only with DataTable. Like this:

@Then("following keywords are here")
public void theFollowingKeywordsAreHere(DataTable data) {
        List<List<String>> dataList = data.asLists(String.class);
        String data1 = dataList.get(0).get(0);
        String data2 = dataList.get(0).get(1);
        String data3 = dataList.get(0).get(2);

Answer 2

The only way to get a List from the Gherkin input is to use datatables.

To use this approach in your example you would have to re-implement the Then step, like this:

...
Then following keywords are here
| toto | tata | titi |

With mapping step like this (notice there is no regular expression to match any keywords, just the step itself):

@Then("^following keywords are here$")
public void theFollowingKeywordsAreHere(List<String> data) {
 //some code
}

This would normally accept DataTable, but List<String> will also work as cucumber can convert it.

Answer 3

You could try the following :

Then following keywords are here
| toto | tata | titi |


@Then("following keywords are here")

public void theFollowingKeywordsAreHere(List data) {

//some code

}

Answer 4

Try this layout in the feature file

Then the following keywords are here
| toto | 
| tata | 
| titi |

Then you should then be able to use this step method...

@Then("^the following keywords are here$")
public void theFollowingKeywordsAreHere(List<String> datas) {
     //some code
}