diff --git a/spec/support/contexts/kangaru_initialised.rb b/spec/support/contexts/kangaru_initialised.rb
new file mode 100644
index 0000000..e97952d
--- /dev/null
+++ b/spec/support/contexts/kangaru_initialised.rb
@@ -0,0 +1,11 @@
+RSpec.shared_context :kangaru_initialised do
+  before do
+    gem.main_file.write(<<~RUBY)
+      require "kangaru"
+
+      module SomeGem
+        extend Kangaru::Initialiser
+      end
+    RUBY
+  end
+end