@fellow/eslint-plugin-coffee/test/test_plugin.coffee

Transpiles coffee files (.coffee, .cjsx) and runs through eslint. Reports errors with original line numbers.

path = require 'path'
vows = require 'vows'
assert = require 'assert'

coffeePlugin = require(path.resolve(__dirname, '../dist'))
CLIEngine = require('eslint').CLIEngine
cli = new CLIEngine {}
cli.addPlugin "coffee", coffeePlugin

lintFile = (file) -> cli.executeOnFiles [path.resolve(__dirname, file)]

lintSource = (filename, source) -> cli.executeOnText source, filename

vows.describe('plugin').addBatch
	'Lints clean':
		topic: lintSource 'clean.coffee', '''
			class Parent
				constructor: (@name) -> ''

			export class Child extends Parent
				constructor: (name="") ->
					super()
					@name = name

			'''

		'no lint': ({ results }) ->
			assert.lengthOf results[0].messages, 0

	'Lints dirty':
		topic: lintSource 'incorrect.coffee', '''
			class Parent
				constructor: (@name) -> ''

			export class Child extends Parent
				constructor: (name="") ->
					super()
					@name = unused = name

			'''

		'found lint': ({ results }) ->
			message = results[0]?.messages?.map((x) -> x.message)
			assert.deepEqual message, ["'unused' is assigned a value but never used."]

	'Bad Syntax':
		topic: lintSource 'dirty.coffee', '''
			class Parent
				constructor: (@name) -> ''

			export class Child extends Parent
				constructor: (parent) -->

			'''

		'has syntax error': ({ results }) ->
			error = results[0]?.messages?[0]

			assert.notEqual -1, error?.ruleId.indexOf("coffeescript-error") or -1

.export(module)