diff --git a/spec/imbecile/regex/parser_spec.rb b/spec/imbecile/regex/parser_spec.rb
new file mode 100644
index 0000000..d9672e1
--- /dev/null
+++ b/spec/imbecile/regex/parser_spec.rb
@@ -0,0 +1,11 @@
+module Imbecile
+  class Regex
+    RSpec.describe Parser do
+
+      it "parses various expressions" do
+        expect(Parser.new("").unit).to be_a Parser::AlternatesUnit
+      end
+
+    end
+  end
+end