DEV Community

Cover image for Demystifying BDD: A Game-Changer for Software Testing ๐ŸŽฎ
Safvan P
Safvan P

Posted on

Demystifying BDD: A Game-Changer for Software Testing ๐ŸŽฎ

In the world of programming, sometimes we get lost in tech talk, leaving our buddies who aren't tech wizards scratching their heads. So, let's unpack a cool concept called Behavior Driven Development (BDD) in plain English. Think of it like explaining your favorite game to a friend!

What's BDD All About? ๐Ÿค”
Imagine you're teaching your friend how to play a video game. Before diving into the action, you lay down the game rules:

What's the objective?
What should happen at different stages?
What's the winning move?

BDD is a bit like this. Instead of coding blindly (not literally, of course!), you define precisely how a piece of code should behave.

Breaking It Down: The Game Analogy ๐ŸŽฎ

**Given** - Picture it as the starting point of your game. Your character is loaded, and you're ready to roll.

**When** - This is when the game is in full swing. You're making moves, battling foes, and collecting points.

**Then** - The end goal of the game. You've reached the final level, maybe defeated the boss, and celebrated your victory.
Enter fullscreen mode Exit fullscreen mode

Now, translate this to coding, especially with tools like Mockito:

Given - We set up the initial game conditions.
When - A specific action or event happens in the game.
Then - We expect a particular outcome, just like reaching a winning stage.

A Real-Life Example: The Food Delivery App ๐Ÿ”

Imagine you're building a food delivery app. A key feature is applying discounts during a food festival.

Given - The app displays regular prices of items.
When - The food festival starts.
Then - Items on the app should show their festival discounts.
Enter fullscreen mode Exit fullscreen mode

Using Mockito's BDD features, it's like saying:

given(menuService.getAllItems()).willReturn(allItems);

In simple words, you're telling the app that if someone wants to see all the items, it should show the list of items we've set up.
Summing It Up ๐ŸŽฎ

For folks who know programming but are new to Mockito and fancy testing tools, I hope this made BDD crystal clear. It's all about setting the rules for your code, much like explaining the rules of a game. This ensures smooth sailing without any unexpected glitches!

Top comments (0)