Ember-cli-blueprint-test-helpers NPM

ember-cli-blueprint-test-helpers

test helpers for ember-cli blueprints

Installation

ember install ember-cli-blueprint-test-helpers

It should be noted that ember-cli-blueprint-test-helpers currently only works for testing blueprints inside addon projects.

Usage

Running Tests

The blueprint tests can be run by:

node_modules/.bin/mocha node-tests --recursive

For convenience you should add the following to your package.json:

"scripts": {
  "nodetest": "mocha node-tests --recursive"
}

to be able to use npm run nodetest to run the tests.

Generating Tests

Generate a blueprint test scaffold using the blueprint-test generator:

ember generate blueprint-test my-blueprint

which will generate a test file at node-tests/blueprints/my-blueprint-test.js.

Example Usage

describe('Acceptance: ember generate and destroy my-blueprint', function() {
  // create and destroy temporary working directories
  setupTestHooks(this);

  it('my-blueprint foo', function() {
    const args = ['my-blueprint', 'foo'];

    // create a new Ember.js app in the working directory
    return emberNew()

      // then generate and destroy the `my-blueprint` blueprint called `foo`
      .then(() => emberGenerateDestroy(args, (file) => {

        // and run some assertions in between
        expect(file('path/to/file.js'))
          .to.contain('file contents to match')
          .to.contain('more file contents\n');
      }));

     // magically done for you: assert that the generated files are destroyed again
  });
});

or more explicitly:

describe('Acceptance: ember generate and destroy my-blueprint', function() {
  // create and destroy temporary working directories
  setupTestHooks(this);

  it('my-blueprint foo', function() {
    const args = ['my-blueprint', 'foo'];

    // create a new Ember.js app in the working directory
    return emberNew()

      // then generate the `my-blueprint` blueprint called `foo`
      .then(() => emberGenerate(args))

      // then assert that the files were generated correctly
      .then(() => expect(file('path/to/file.js'))
        .to.contain('file contents to match')
        .to.contain('more file contents\n'))

      // then destroy the `my-blueprint` blueprint called `foo`
      .then(() => emberDestroy(args))

      // then assert that the files were destroyed correctly
      .then(() => expect(file('path/to/file.js')).to.not.exist);
  });
});

if your blueprints support the new MU file structure, you can test them using this option: { ìsModuleUnification: true }

describe('Acceptance: ember generate and destroy my-blueprint', function() {
  // create and destroy temporary working directories
  setupTestHooks(this);

  it('my-blueprint foo', function() {
    const args = ['my-blueprint', 'foo'];

    // create a new Ember.js app in the working directory
    // this app will have MU file structure, namely a `src` directory
    return emberNew({ isModuleUnification: true })

      // then generate the `my-blueprint` blueprint called `foo`
      .then(() => emberGenerate(args, { isModuleUnification: true }))

      // then assert that the files were generated correctly
      .then(() => expect(file('path/to/file.js'))
        .to.contain('file contents to match')
        .to.contain('more file contents\n'))

      // then destroy the `my-blueprint` blueprint called `foo`
      .then(() => emberDestroy(args, { isModuleUnification: true }))

      // then assert that the files were destroyed correctly
      .then(() => expect(file('path/to/file.js')).to.not.exist);
  });
});

API Reference

This project exports two major API endpoints for you to use:

require('ember-cli-blueprint-test-helpers/chai')
This endpoint exports the Chai assertion library including the chai-as-promised and chai-files plugins
require('ember-cli-blueprint-test-helpers/helpers')
This endpoint exports the functions mentioned in the following API reference

`setupTestHooks(scope, options)`

Prepare the test context for the blueprint tests.

Parameters:

{Object} scope the test context (i.e. this)
{Object} [options] optional parameters
{Number} [options.timeout=20000] the test timeout in milliseconds
{Object} [options.tmpenv] object containing info about the temporary directory for the test.
{String} [options.cliPath='ember-cli'] path to the ember-cli dependency
{Boolean} [options.disabledTasks=['addon-install', 'bower-install', 'npm-install']] override the mocked installs Defaults to lib/helpers/tmp-env.js

Returns: {Promise}

`emberNew(options)`

Create a new Ember.js app or addon in the current working directory.

Parameters:

{Object} [options] optional parameters
{String} [options.target='app'] the type of project to create (app, addon or in-repo-addon)
{Boolean} [options.isModuleUnification=true] a toggle to use MU file structure

Returns: {Promise}

`emberGenerate(args, options)`

Run a blueprint generator.

Parameters:

{Array.<String>} args arguments to pass to ember generate (e.g. ['my-blueprint', 'foo'])
{Object} [options] optional parameters
{Boolean} [options.isModuleUnification=true] a toggle to use MU file structure

Returns: {Promise}

`emberDestroy(args, options)`

Run a blueprint destructor.

Parameters:

{Array.<String>} args arguments to pass to ember destroy (e.g. ['my-blueprint', 'foo'])
{Object} [options] optional parameters
{Boolean} [options.isModuleUnification=true] a toggle to use MU file structure

Returns: {Promise}

`emberGenerateDestroy(args, assertionCallback, options)`

Run a blueprint generator and the corresponding blueprint destructor while checking assertions in between.

Parameters:

{Array.<String>} args arguments to pass to ember generate (e.g. ['my-blueprint', 'foo'])
{Function} assertionCallback the callback function in which the assertions should happen
{Object} [options] optional parameters
{Boolean} [options.isModuleUnification=true] a toggle to use MU file structure

Returns: {Promise}

`modifyPackages(packages)`

Modify the dependencies in the package.json file of the test project.

Parameters:

{Array.<Object>} packages the list of packages that should be added, changed or removed

`setupPodConfig(options)`

Setup usePods in .ember-cli and/or podModulePrefix in environment.js.

Parameters:

{Object} [options] optional parameters
{Boolean} [options.usePods] add usePods in .ember-cli
{Boolean} [options.podModulePrefix] set npodModulePrefix to app/pods in config/environment.js