Add test case for #29

test/fixtures/dependencies/index.js

@@ -0,0 +1,3 @@
+import style1 from './style1.scss';
+
+export default style1;

test/fixtures/dependencies/style1.scss

@@ -0,0 +1,3 @@
+@import 'style2.scss';
+
+body {color: red;}

test/fixtures/dependencies/style2.scss

@@ -0,0 +1,3 @@
+@import 'style3.scss';
+
+body {color: white;}

test/fixtures/dependencies/style3.scss

@@ -0,0 +1 @@
+body {color:blue;}

test/index.js

@@ -1,4 +1,5 @@
 import test from 'ava'
+import { resolve } from 'path'
 import { readFileSync, writeFileSync } from 'fs'
 import { removeSync } from 'fs-extra'
 import { rollup } from 'rollup'
@@ -191,3 +192,22 @@ test('should insert CSS into head tag', t => {
     new Function(code)() // eslint-disable-line
   })
 })
+
+test('should flatten stylesheets dependencies in return object', t => {
+  return rollup({
+    entry: 'fixtures/dependencies/index.js',
+    plugins: [
+      sass({
+        options: sassOptions
+      })
+    ]
+  }).then(bundle => {
+    const pathOfStyle1 = resolve('fixtures/dependencies/style1.scss')
+    const pathOfStyle2 = resolve('fixtures/dependencies/style2.scss')
+    const pathOfStyle3 = resolve('fixtures/dependencies/style3.scss')
+    const styleModule = bundle.modules.find(m => m.id === pathOfStyle1)
+
+    t.true(styleModule.dependencies.indexOf(pathOfStyle2) > -1)
+    t.true(styleModule.dependencies.indexOf(pathOfStyle3) > -1)
+  })
+})