diff --git a/.rspec b/.rspec
new file mode 100644
index 0000000..c7a3d35
--- /dev/null
+++ b/.rspec
@@ -0,0 +1 @@
+--require ./spec/spec_helper.rb
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..d6453b8
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+require 'asciidoctor'
+require 'asciidoctor/foodogsquared-extensions'
+
+RSpec.configure do
+  def fixtures_dir
+    File.join __dir__, 'fixtures'
+  end
+
+  def fixtures_file path
+    File.join fixtures_dir, path
+  end
+end