This document describes using Cucumber to test a simple calculator application written in Go. It includes code snippets for defining calculator functionality, Cucumber step definitions to test adding two numbers, and links to resources about test-driven development.

8. Given
(/^I have entered (d+) into the
calculator$/)
do |n|
calculator - Calculator.new
calculator.push(n.to_i)
end
class Calculator
def push(n)
@args ||= []
@args << n
end
end
Feature: Addition
In order to avoid silly mistakes
As a math idiot
I want to be told the sum of two numbers
Scenario: Add two numbers
Given I have entered 23 into the
calculator
And I have entered 41 into the
calculator
When I press add
Then the result should be 64 on the
screen

9. Feature: Addition
In order to avoid silly mistakes
As a math idiot
I want to be told the sum of two numbers
Scenario: Add two numbers
Given I have entered 23 into the
calculator
And I have entered 41 into the
calculator
When I press add
Then the result should be 64 on the
screen
using cucumber::ScenarioScope;
struct CalcCtx {
Calculator calc;
double result;
};
GIVEN("^I have entered (d+) into the calculator$")
{
REGEX_PARAM(double, n);
ScenarioScope<CalcCtx> context;
context->calc.push(n);
}
class Calculator {
public:
void push(int n) {
stack.push_back(n);
}
private:
std::vector<int>
stack;
};

16. https://github.com/

17. https://travis-ci.org/

18. https://coveralls.io/

19. https://godoc.org/

31. https://cukes.info/
https://golang.org/
https://github.com/
https://coveralls.io/
https://travis-ci.org/

32. Test Driven Development: By Example
Kent Beck
Growing object-oriented software guided by tests
Steve Freeman, Nat Pryce
Modern C++ Programming with Test-Driven Development:
Code Better, Sleep Better
Jeff Langr
The Pragmatic Programmer: From Journeyman to Master
Andrew Hunt, David Thomas
Becoming a Better Programmer: A Handbook for People
Who Care About Code
Pete Goodliffe