Fix #103, use indented sass syntax when lang="sass" (#113)

* test: indented sass syntax

* fix: use indented sass syntax when lang="sass"

Fix #103

src/style/scss.js

@@ -9,6 +9,7 @@ export default function (style, options) {
         omitSourceMapUrl: true,
         sourceMap: true,
         outFile: style.id,
+        indentedSyntax: style.lang === 'sass',
         ...options.scss
     })
 

test/expects/sass.css

@@ -0,0 +1,2 @@
+.sass__test {
+  color: red; }

test/expects/sass.js

@@ -0,0 +1,3 @@
+var sass = { template: "<div class=\"sass__test\"></div>",cssModules: {"test":"sass__test"},};
+
+export default sass;

test/fixtures/sass.vue

@@ -0,0 +1,15 @@
+<template>
+<div class="test"></div>
+</template>
+
+<script lang="babel">
+export default {}
+</script>
+
+
+<style lang="sass" module>
+$var: red;
+
+.test
+    color: red;
+</style>

test/test.js

@@ -19,7 +19,7 @@ function test(name) {
         var expected = read('expects/' + name + '.js').replace(/\r/g, '')
         var actualCss
         var cssHandler = function (css, styles) {
-            if (['scss', 'pug'].indexOf(name) > -1) {
+            if (['scss', 'pug', 'sass'].indexOf(name) > -1) {
                 actualCss = styles[0].$compiled.code
             } else {
                 actualCss = css
@@ -58,6 +58,9 @@ function test(name) {
                       'scoped-css',
                       'scoped-css-with-no-auto-style',
                       'scss',
+                      'sass',
+                      'pug',
+                      'less',
                       'style',
                       'stylus'
                   ].indexOf(name) > -1) {