ASP .Net Core - TDD and BDD

Level : Advanced
Mentor: Shailendra Chauhan
Duration : 00:01:00

Test Driven Development (TDD)

TDD is a software development approach where developers write tests before writing the actual code. It encourages a tight feedback loop and ensures that code is thoroughly tested from the outset.

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)

BDD is a collaborative approach to software development that emphasizes clear communication between developers, testers, and non-technical stakeholders. It uses natural language specifications to define the expected behavior of a system.

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
}
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