diff --git a/lib/build/index.js b/lib/build/index.js
index 5d0d571c4d..c62ff33b6d 100644
--- a/lib/build/index.js
+++ b/lib/build/index.js
@@ -22,6 +22,7 @@ const reqSep = /\//g
 const sysSep = _.escapeRegExp(sep)
 const normalize = string => string.replace(reqSep, sysSep)
 const wp = function (p) {
+  /* istanbul ignore if */
   if (/^win/.test(process.platform)) {
     p = p.replace(/\\/g, '\\\\')
   }
diff --git a/package.json b/package.json
index 16a747e1e1..ea85d6bd54 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "nuxt": "./bin/nuxt"
   },
   "scripts": {
-    "test": "nyc ava --serial test/",
+    "test": "nyc ava test/",
     "coverage": "nyc report --reporter=text-lcov > coverage.lcov && codecov",
     "lint": "eslint --ext .js,.vue bin lib pages test/*.js --ignore-pattern lib/app",
     "build": "webpack",
diff --git a/test/fixtures/with-config/components/loading.vue b/test/fixtures/with-config/components/loading.vue
new file mode 100644
index 0000000000..9c28022726
--- /dev/null
+++ b/test/fixtures/with-config/components/loading.vue
@@ -0,0 +1,36 @@
+<template lang="html">
+  <div class="loading-page" v-if="loading">
+    <p>Loading...</p>
+  </div>
+</template>
+
+<script>
+export default {
+  data: () => ({
+    loading: false
+  }),
+  methods: {
+    start () {
+      this.loading = true
+    },
+    finish () {
+      this.loading = false
+    }
+  }
+}
+</script>
+
+<style scoped>
+.loading-page {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  background: rgba(255, 255, 255, 0.8);
+  text-align: center;
+  padding-top: 200px;
+  font-size: 30px;
+  font-family: sans-serif;
+}
+</style>
diff --git a/test/fixtures/with-config/layouts/app.vue b/test/fixtures/with-config/layouts/app.vue
new file mode 100644
index 0000000000..25fab4ce30
--- /dev/null
+++ b/test/fixtures/with-config/layouts/app.vue
@@ -0,0 +1,5 @@
+<template>
+  <nuxt-container>
+    <nuxt/>
+  </nuxt-container>
+</template>
diff --git a/test/fixtures/with-config/layouts/error.vue b/test/fixtures/with-config/layouts/error.vue
new file mode 100644
index 0000000000..7694d81b29
--- /dev/null
+++ b/test/fixtures/with-config/layouts/error.vue
@@ -0,0 +1,3 @@
+<template>
+  <h1>Error page</h1>
+</template>
diff --git a/test/fixtures/with-config/nuxt.config.js b/test/fixtures/with-config/nuxt.config.js
index 426afb8d18..040ef75068 100644
--- a/test/fixtures/with-config/nuxt.config.js
+++ b/test/fixtures/with-config/nuxt.config.js
@@ -1,5 +1,7 @@
 module.exports = {
   router: {
     base: '/test/'
-  }
+  },
+  cache: true,
+  loading: '~components/loading'
 }
diff --git a/test/fixtures/with-config/plugins/test.js b/test/fixtures/with-config/plugins/test.js
new file mode 100644
index 0000000000..b538bacb75
--- /dev/null
+++ b/test/fixtures/with-config/plugins/test.js
@@ -0,0 +1 @@
+// Custom plugin