add redundant require article

_config.yml

@@ -1,5 +1,5 @@
 title: Even Better Specs
-description: Guidelines for readable and maintainable tests
+description: Guidelines for maintainable tests
 theme: just-the-docs
 
 url: https://evenbetterspecs.github.io
@@ -42,6 +42,9 @@ nav_external_links:
   - title: Expect vs should
     url: "#expect-vs-should"
     hide_icon: true
+  - title: Redundant require
+    url: "#redundant-require"
+    hide_icon: true
   - title: Instance double over double
     url: "#instance-double-over-double"
     hide_icon: true

_includes/redundant_require.html

@@ -0,0 +1,35 @@
+<article>
+  <h2 id="redundant-require">
+    <a href="#redundant-require">
+      Redundant require
+    </a>
+  </h2>
+
+  <p>Avoid redundant <code>require</code> in your spec files. Use <code>.rspec</code> file instead.</p>
+
+  <div class="bad">
+{% highlight ruby %}
+# spec/models/user_spec.rb
+require 'rails_helper'
+
+describe User do
+end
+{% endhighlight %}
+  </div>
+
+  <div class="good">
+{% highlight ruby %}
+# spec/models/user_spec.rb
+describe User do
+end
+{% endhighlight %}
+  </div>
+
+  <div class="good">
+{% highlight ruby %}
+# .rspec
+--require rails_helper
+{% endhighlight %}
+  </div>
+
+</article>

index.html

@@ -35,6 +35,7 @@ <h2>
 {% include all_possible_cases.html %}
 {% include request_vs_controller.html %}
 {% include expect_vs_should.html %}
+{% include redundant_require.html %}
 {% include instance_double_over_double.html %}
 {% include lets_not.html %}
 {% include avoid_hooks.html %}