Merge pull request #3 from danielhusar/master

Ddd source maps test

Author: w0rm

package.json

@@ -28,6 +28,7 @@
     "vinyl-sourcemaps-apply": "^0.1.1"
   },
   "devDependencies": {
-    "mocha": "^1.21.4"
+    "mocha": "^1.21.4",
+    "gulp-sourcemaps": "^1.1.5"
   }
 }

test.js

@@ -2,6 +2,7 @@
 
 var assert = require('assert')
 var gutil = require('gulp-util')
+var sourceMaps = require('gulp-sourcemaps')
 var postcss = require('./index')
 
 it('should transform css with multiple processors', function (cb) {
@@ -54,6 +55,35 @@ it ('should throw error if processors are not provided', function (cb) {
 })
 
 
+it ('should generate source maps', function (cb) {
+
+  var init = sourceMaps.init()
+  var write = sourceMaps.write()
+  var css = postcss(
+    [ doubler, doubler ]
+  )
+
+  init
+    .pipe(css)
+    .pipe(write)
+
+  write.on('data', function (file) {
+    assert.equal(file.sourceMap.mappings, 'AAAA,IAAI,cAAA,AAAa,cAAb,AAAa,cAAb,AAAa,aAAA,EAAC')
+    assert(/sourceMappingURL=data:application\/json;base64/.test(file.contents.toString()))
+    cb()
+  })
+
+  init.write(new gutil.File({
+    base: __dirname,
+    path: __dirname + '/fixture.css',
+    contents: new Buffer('a { color: black }')
+  }))
+
+  init.end()
+
+})
+
+
 function doubler (css) {
   css.eachDecl(function (decl) {
     decl.parent.prepend(decl.clone())