ASP .Net Core - TDD and BDD

Test Driven Development (TDD)

Example

// TDD example in ASP.NET Core
// Write a test first
public void Test_AddNumbers_ReturnsSum()
{
  Calculator calculator = new Calculator();
  int result = calculator.Add(2, 3);
  Assert.AreEqual(5, result);
}
// Implement the code to pass the test
public class Calculator
{
  public int Add(int a, int b)
  {
    return a + b;
  }
}

Behavior Driven Development (BDD)

Example

// BDD example in ASP.NET Core using SpecFlow
Feature: User Registration
  Scenario: Valid user registration
    Given the user is on the registration page
    When they fill in the registration form with valid details
    And they click the registration button
    Then they should see a "Registration Successful" message
// Step definitions
[Given("the user is on the registration page")]
public void GivenTheUserIsOnTheRegistrationPage()
{
  // Navigate to the registration page
}
[When("they fill in the registration form with valid details")]
public void WhenTheyFillInTheRegistrationFormWithValidDetails()
{
  // Enter valid registration data
}
[When("they click the registration button")]
public void WhenTheyClickTheRegistrationButton()
{
  // Click the registration button
}
[Then("they should see a \"Registration Successful\" message")]
public void ThenTheyShouldSeeARegistrationSuccessfulMessage()
{
  // Assert the "Registration Successful" message is displayed
}