Is it possible to use NBuilder to Build a collection of random strings?

Question

pretty simple question: can I use NBuilder to create a collection of x number of random strings?

I was trying...

// NOTE: Tags need to be lowercase.
return Builder<string>
    .CreateListOfSize(10)
    .WhereAll()
        .Has(x => x = randomGenerator.Phrase(15))
    .WhereTheFirst(1)
        .Has(x => x = "time")
    .AndTheNext(1)
        .Has(x => x = "place")
    .AndTheNext(1)
        .Has(x => x = "colour")
    .Build();

but it was run-time erroring, something about I needed to call some specific constructor or something.

Anyone have any ideas?

score 15 · Answer 1 · edited Dec 03 '15 at 18:40

15

Sorry about bringing an old thread back to life, but I just wanted to share this solution/hack:

var myList = Enumerable.Range(0, 10).Select(el => generator.Phrase(10));

Your feedback is appreciated :)

edited Dec 03 '15 at 18:40

Shaun Luttin

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answered Jan 21 '14 at 23:55

Andrea Scarcella

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8

`return Enumerable.Range(0, size).Select(el => GetRandom.String(10));` works too – Sherlock Jan 17 '16 at 21:05

Pedro · Accepted Answer · 2011-02-01T15:45:26.690

9

NBuilder creates objects by using the default (parameterless) constructor. The exception you are receiving is because the String class doesn't have a default constructor.

To create a list of random strings, you could use the Phrase method inside a loop. Maybe not as clean as a single NBuilder chain, but it gets the job done:

   List<string> stringsList = new List<string>();
   var generator = new RandomGenerator();
   for (int i = 0; i < 10; i++)
   {
       stringsList.Add(generator.Phrase(15));
   }

   return stringsList;

edited Feb 01 '11 at 15:45

answered Jan 31 '11 at 22:59

Pedro

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so then NBuilder can't create random strings? – Pure.Krome Feb 01 '11 at 06:34
1

A random string - yes. A list of random strings using a single NBuilder chain of methods - not that I am aware of. I've updated my answer to include a way of generating the list. – Pedro Feb 01 '11 at 15:46

Is it possible to use NBuilder to Build a collection of random strings?

2 Answers2