First Cucumber Example

./features/adding.feature

Feature: Adding
Scenario Outline: Add two numbers
Given the input "<input>"
When the adding is run
Then the output should be "<output>"

Examples:
| input | output |
| 2+2 | 4 |
| 98+1 | 99 |

¼Ó·¨Ô´Âë：

./ calc.rb

print eval(ARGV[0])

Step definitions:

./features/step_definitions/calculaor_steps.rb

Given /^the input "([^"]*)"$/ do |input|
@input = input
end

When /^the adding is run$/ do
@output = `ruby calc.rb #{@input}`
raise('Command failed!') unless $?.success?
end

Then /^the output should be "([^"]*)"$/ do |expected_output|
@output.should == expected_output
end