Problem statements

The problem statement, which we will define in this chapter, will be used throughout the book. In forthcoming chapters, we will build on this problem statement. We will be looking at building a base conversion API. We will start with an initial base 10 (decimal) number to base 2 (binary) conversions and vice versa. Then, we will add more bases for conversion.

Let's write this down in gherkin language. Gherkin is a business readable, domain-specific language that lets you describe a software's behavior without detailing how that behavior is implemented.

Feature: decimal to binary conversion:

As a user, I want to convert a decimal number to a binary number:

Scenario 1:

• Given I have a number A
• When I convert this number to a binary number
• Then, I get a binary equivalent B of the original decimal number

Scenario 2:

• Given I have binary number X
• When I convert this number to a decimal number
• Then, I get a decimal equivalent Y of the original binary number

Scenario 3:

• Given I have decimal number A
• When I convert A to binary to get binary number B
• And again convert B to decimal number C
• Then A is equal to C

Tip

To read more about gherkin language visit: https://github.com/cucumber/cucumber/wiki/Gherkin