Behavior Driven Development

Behavior Driven Development is a software development approach that it aims to bridge the gap between business analyst and developers. BDD allows to create test cases in simple text language

There are many tools available to support BDD and we will use Specflow BDD.

Specflow BDD tool uses Gherkin language

Gherkin Syntax

Feature

Feature: Login Control
    Check passwords are equal
    Add login log

Background

Background:
    Given User has already created before starting scenario

Scenario
Given
When
Then
And

But

Scenario:
    Given Get password from first password field
    And Get password retry from second password field
    When Click login button
    Then Compare passwords are equal
    And Add log

Scenario Outline

Examples

Scenario Outline: Show result
    Then Number: <number> , Name: <name>

Examples: 
  | number | name  |
  | 1      | can   |
  | 2      | caner |

Table Usage

Scenario: Add two numbers
  Given the first number is 50
  And I enter the following number
    | number | digits |
    | one    | 1      |
    | two    | 2      |
    | three  | 3      |
  And the second number is 70
  When the two numbers are added
  Then the result should be 120

[Given(@"I enter the following number")]
public void GivenIEnterTheFollowingNumber(Table table)
{
    var firstDataString = table.Rows[0]["number"];
    Console.WriteLine($"firstDataString : {firstDataString}");

    var firstDataDigit = table.Rows[0]["digits"];
    Console.WriteLine($"firstDataDigit : {firstDataDigit}");

    object obj = table.CreateSet<object>();
    dynamic datas = table.CreateDynamicSet(); //SpecFlow.Assist.Dynamic
    foreach (var data in datas)
    {
        Console.WriteLine($"The number is {data.number} : {data.digits}");
    }
}

Scenario Context

private readonly ScenarioContext _scenarioContext;
_scenarioContext["Number1"] = number;
_scenarioContext.Add("key",new object());
var myObject = _scenarioContext.Get<object>("key");
Console.WriteLine("First Given parameter is " + _scenarioContext["Number1"]);

Hooks - Binding

[Binding]
public class Hooks
{
    [BeforeScenario]
    public static void BeforeScenario()
    {
        Console.WriteLine("Before Scenario runned.");
    }

    [AfterScenario]
    public static void AfterScenario()
    {
        Console.WriteLine("After Scenario runned.");
    }
}

Scoped Binding

Feature: Test_Feature
    bla bla
    
@scenarioTag
Scenario: Add two numbers
  Given the first number is 50
  And I enter the following number
    | number | digits |
    | one    | 1      |
    | two    | 2      |
    | three  | 3      |
  And the second number is 70
  When the two numbers are added
  Then the result should be 120