Scenario outline

Instead of repeating the same example and only change the values you can use examples.

You write an example like this:

Feature: add, subtract, divide and multiply

Scenario: Add numbers
  Given I have entered [num1] into the calculator
  And I have entered [num2] into the calculator
  When I add the numbers
  Then the sum should be [result]
	
Examples:
    |num1|num2|result|
    |   1|   2|     3|
    |  -1|   2|     1|
    |   1|  -2|    -1|
    |  -2|  -3|    -5|

As you may have noted, the feature has ``Scenario: Add Numbers. You may also use Scenario Outline: Add numbers`, for nbehave it doesnt matter which one you use.

Code for the steps is implemented

using NBehave.Narrator.Framework;
using NBehave.Spec.NUnit;

namespace NBehave.Examples.Calculator_table.Steps
{
    [ActionSteps]
    public class AddNumbers
    {
        private Calculator _calculator;

        [BeforeScenario]
        public void SetUp_scenario()
        {
            _calculator = new Calculator();
        }

        [Given(@"I have entered $number into the calculator")]
        public void Enter_number(int number)
        {
            _calculator.Enter(number);
        }

        [When(@"I add the numbers")]
        public void Add()
        {
            _calculator.Add();
        }

        [Then(@"the sum should be $result")]
        public void Result(int result)
        {
            _calculator.Value().ShouldEqual(result);
        }
    }
}