Feature: Simple maths In order to do maths As a developer I want to increment variables Scenario: easy maths Given a variable set to 1 When I increment the variable by 1 Then the variable should contain 2 Scenario Outline: much more complex stuff Given a variable set to <var> When I increment the variable by <increment> Then the variable should contain <result> Examples: | var | increment | result | | 100 | 5 | 105 | | 99 | 1234 | 1333 | | 12 | 5 | 18 |
///// Your World ///// // set this.World to your custom world (optional) var CustomWorld = function() {}; CustomWorld.prototype.variable = 0; CustomWorld.prototype.setTo = function(number) { this.variable = parseInt(number); }; CustomWorld.prototype.incrementBy = function(number) { this.variable += parseInt(number); }; this.World = CustomWorld; ///// Your step definitions ///// // use this.Given(), this.When() and this.Then() to declare step definitions this.Given(/^a variable set to (\d+)$/, function(number) { this.setTo(number); }); this.When(/^I increment the variable by (\d+)$/, function(number) { this.incrementBy(number); }); this.Then(/^the variable should contain (\d+)$/, function(number) { if (this.variable != parseInt(number)) throw new Error('Variable should contain ' + number + ' but it contains ' + this.variable + '.'); });