Cucaroo NPM | npm.io

cucaroo 🥒

A light cucumber implementation for node javascript. Cucaroo allows you to have product defined .features and facilitates the testing against the narrative of the feature.

Usage

$> cucaroo

Feature: Successful feature runs
  As a BDD developer
  I want to implement and run cucumber tests
  So that I have regression testing, and a starting place for talking with product people

  Scenario: All is good
     Given  all step definitions are defined
     When   I run the feature
     Then   I should see all steps in green
     And    the exit code should be 0

$>

Installation

npm install -g cucaroo

Overview

Run tests against your feature steps.

Successfully Passed Features

The good. Here is an example of a feature that is well defined and passes all of it's scenario's steps.

Feature Definition

Feature: Successful feature runs
  As a BDD developer
  I want to implement and run cucumber tests
  So that I have regression testing, and a starting place for talking with product people

  Scenario: All is good
    Given all step definitions are defined
    When I run the feature
    Then I should see all steps in green
    And the exit code should be 0

Here is our step_definition for this feature

const expect = require('chai').expect;

module.exports = function(world) {
  world.given('all step definitions are defined', function(done) {
    expect(foo).to.be.ok;
    done();
  });

  world.when('I run the feature', function(done) {
    expect(bar).to.ok;
    done();
  });

  world.then('I should see all steps in green', function(done) {
    expect(baz.success).to.equal(4);
    done();
  });

  world.and('the exit code should be 0', function(done) {
    assert.equal(world.errors, 0);
    done();
  });
};

Assuming your tests successfully passed, you will get an exit code of 0.

Failed Features

The bad. During development and other situations, tests will fail. In the event your cucuroo test fails, you will received information on where and how a test failed. Here is an example of a feature failing.

Feature Definition

Feature: Feature with a whole lot of errors
  As a BDD developer
  I want to see my regression tests fail
  So that I know my code works after modifications

  Scenario: Assertion failure
    Given Things are moving along just fine
    When And then I make an assertion that aint true
    Then I should see a helpful stack trace
    And the summary at the end reflects those errors

  Scenario: Runtime errors
    Given Things are moving along just fine
    When I make an error resulting in a runtime failure
    Then I should see a helpful stack trace
    And the summary at the end reflects those errors

And then the step_definition file that actually does the assertions.

const expect = require('chai').expect;

module.exports = function(world) {
  world.given('Things are moving along just fine', function(done) {
    done();
  });

  world.when('And then I make an assertion that aint true', function(done) {
    expect(true).to.be.(false);
    done();
  });

  world.then('I should see a helpful stack trace', function(done) {
    done();
  });

  world.and('the summary at the end reflects those errors', function(done) {
    done();
  });

  world.when('I make an error resulting in a runtime failure', function(done) {
    failHard();
  });
};

And with these failing steps, you will recevied the following output (but with pretty colors).

Feature: Feature with a whole lot of errors
  As a BDD developer
  I want to see my regression tests fail
  So that I know my code works after modifications

  Scenario: Assertion failure
     Given  Things are moving along just fine
     When   And then I make an assertion that aint true  // step threw an error; halting scenario

AssertionError: it isnt like we thought
    at StepDefinition.implementation (/Users/user1/Projects/cucaroo/test/features/step_definitions/failing-steps.js:11:5)
    at Step.run (/Users/user1/Projects/cucaroo/lib/step.js:25:23)
    at StepCollection.runStepUnlessHalted (/Users/user1/Projects/cucaroo/lib/step-collection.js:53:10)
    at /Users/user1/Projects/cucaroo/lib/step-collection.js:30:33
    at /Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:3830:24
    at replenish (/Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:946:17)
    at iterateeCallback (/Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:931:17)
    at /Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:906:16
    at /Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:3835:13
    at definition.implementation (/Users/user1/Projects/cucaroo/lib/step.js:33:9)

     Then  I should see a helpful stack trace
     And   the summary at the end reflects those errors

  Scenario: Runtime errors
     Given  Things are moving along just fine
     When   I make an error resulting in a runtime failure  // step threw an error; halting scenario

ReferenceError: failHard is not defined
    at StepDefinition.implementation (/Users/user1/Projects/cucaroo/test/features/step_definitions/failing-steps.js:24:5)
    at Step.run (/Users/user1/Projects/cucaroo/lib/step.js:25:23)
    at StepCollection.runStepUnlessHalted (/Users/user1/Projects/cucaroo/lib/step-collection.js:53:10)
    at /Users/user1/Projects/cucaroo/lib/step-collection.js:30:33
    at /Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:3830:24
    at replenish (/Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:946:17)
    at iterateeCallback (/Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:931:17)
    at /Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:906:16
    at /Users/user1/Projects/cucaroo/node_modules/async/dist/async.js:3835:13
    at definition.implementation (/Users/user1/Projects/cucaroo/lib/step.js:33:9)

     Then   I should see a helpful stack trace
     And    the summary at the end reflects those errors


Some features failed:

  Features -   Passing: 0, Failing: 1
  Scenarios -  Passing: 0, Failing: 2
  Steps -      Passing: 2, Failing: 2