Add support for presets

lib/linter.js

@@ -66,6 +66,16 @@ Linter.prototype =
 
       this._configuredRules = []
 
+      if (options && options.hasOwnProperty('preset')) {
+        var presetPath = __dirname + '/../presets/' + options.preset + '.json'
+
+        if (fs.existsSync(presetPath)) {
+          options = JSON.parse(JSON.minify(fs.readFileSync(presetPath, 'utf8')))
+        } else {
+          throw new Error('Preset "' + options.preset + '" does not exist')
+        }
+      }
+
       glob.sync(__dirname + '/rules/*.js').forEach(function (file) {
         var Rule = require(file)
           , rule = new Rule()

test/fixtures/presets/clock--invalid.jade

@@ -0,0 +1,4 @@
+div.container
+  header(class='main-header')
+    a(href='/') Project Title
+    img(src='/')

test/fixtures/presets/clock--valid.jade

@@ -0,0 +1,4 @@
+.container
+  header.main-header
+    a(href='/') Project Title
+    img(src='/', alt='alt')

test/linter.test.js

@@ -14,6 +14,18 @@ describe('linter', function () {
       assert.equal(linter.getConfiguredRules().length, 0)
     })
 
+    it('should load configured rules for a preset', function () {
+      linter.configure({ preset: 'clock' })
+
+      assert.equal(linter.getConfiguredRules().length > 0, true)
+    })
+
+    it('should error for invalid preset', function () {
+      assert.throws(function () {
+        linter.configure({ preset: 'nonexistent' })
+      }, /Preset "nonexistent" does not exist/)
+    })
+
     it('should not use disabled rules', function () {
       linter.configure({ validateAttributeSeparator: null })
 

test/presets.test.js

@@ -0,0 +1,18 @@
+var glob = require('glob')
+  , Linter = require('../lib/linter')
+
+describe('presets', function () {
+
+  var linter = new Linter()
+    , rules = []
+    , fixturesPath = __dirname + '/fixtures/presets/'
+
+  glob.sync(__dirname + '/presets/*.test.js').forEach(function (file) {
+    rules.push(require(file))
+  })
+
+  rules.forEach(function (rule) {
+    rule(linter, fixturesPath)
+  })
+
+})

test/presets/clock.test.js

@@ -0,0 +1,33 @@
+module.exports = createTest
+
+var assert = require('assert')
+
+function createTest(linter, fixturesPath) {
+
+  describe('clock', function () {
+
+    describe('true', function () {
+
+      before(function () {
+        linter.configure({ preset: 'clock' })
+
+        assert.equal(linter.getConfiguredRules().length, 19)
+      })
+
+      it('should report errors found in file', function () {
+        var result = linter.checkFile(fixturesPath + 'clock--invalid.jade')
+
+        assert.equal(result.length, 2)
+      })
+
+      it('should not report errors in valid file', function () {
+        var result = linter.checkFile(fixturesPath + 'clock--valid.jade')
+
+        assert.equal(result.length, 0)
+      })
+
+    })
+
+  })
+
+}