Examples for blog post "Running SpecFlow scenarios parallel with xUnit 2"

Addition.feature

Feature: Addition

Scenario Outline: Add two numbers
	Given I have entered <a> into the calculator
	And I have entered <b> into the calculator
	When I press add
	Then the result should be <result> on the screen

Examples: 
	| case          | a  | b  | result |
	| classic       | 50 | 70 | 120    |
	| commutativity | 70 | 50 | 120    |
	| zero          | 0  | 42 | 42     |

App.config

<specFlow>
  <unitTestProvider name="xUnit" />
</specFlow>

Calculator.cs

public class Calculator
{
  private readonly Stack<int> operands = new Stack<int>();

  public int Result
  {
    get { return operands.Peek(); }
  }

  public void Enter(int operand)
  {
    operands.Push(operand);
  }

  public void Add()
  {
    operands.Push(operands.Pop() + operands.Pop());
  }

  public void Multiply()
  {
    operands.Push(operands.Pop() * operands.Pop());
  }
}

CalculatorSteps.cs

[Binding]
public class CalculatorSteps
{
  private readonly Calculator calculator = new Calculator();

  [Given(@"I have entered (.*) into the calculator")]
  public void GivenIHaveEnteredIntoTheCalculator(int operand)
  {
      calculator.Enter(operand);
  }
  
  [When(@"I press add")]
  public void WhenIPressAdd()
  {
    calculator.Add();
  }

  //...

  [Then(@"the result should be (.*) on the screen")]
  public void ThenTheResultShouldBeOnTheScreen(int expectedResult)
  {
    Assert.Equal(expectedResult, calculator.Result);
  }
}

Multiplication.feature

Feature: Multiplication

Scenario Outline: Add two numbers
	Given I have entered <a> into the calculator
	And I have entered <b> into the calculator
	When I press multiply
	Then the result should be <result> on the screen

Examples: 
	| case          | a  | b  | result |
	| classic       | 50 | 70 | 3500   |
	| commutativity | 70 | 50 | 3500   |
	| zero          | 0  | 42 | 0      |
	| one           | 1  | 42 | 42     |

StepsWithScenarioContext.cs

[Given(@"I have entered (.*) into the calculator")]
public void GivenIHaveEnteredIntoTheCalculator(int operand)
{
  ((Calculator)ScenarioContext.Current["calc"]).Enter(operand);
}

StepsWithScenarioContextParallel.cs

[Binding]
public class CalculatorSteps
{
  private readonly ScenarioContext scenarioContext;

  public CalculatorSteps(ScenarioContext scenarioContext)
  {
    this.scenarioContext = scenarioContext;
  }

  [Given(@"I have entered (.*) into the calculator")]
  public void GivenIHaveEnteredIntoTheCalculator(int operand)
  {
    ((Calculator)scenarioContext["calc"]).Enter(operand);
  }
  //...
}