Commit dbe80b3

@@ -0,0 +1,30 @@
+module TFA
+  describe SecureProxy do
+    subject { described_class.new(original, passphrase) }
+    let(:original) { Tempfile.new('tfa') }
+    let(:passphrase) { SecureRandom.uuid }
+
+    after { original.unlink }
+
+    describe "decrypt!" do
+      let(:message) { JSON.generate(secret: SecureRandom.uuid) }
+
+      it 'decrypts an encrypted file' do
+        IO.write(original.path, message)
+        subject.encrypt!
+        subject.decrypt!
+        expect(IO.read(original.path)).to eql(message)
+      end
+    end
+
+    describe "encrypt!" do
+      let(:message) { JSON.generate(secret: SecureRandom.uuid) }
+
+      it 'encrypts a file' do
+        IO.write(original.path, message)
+        subject.encrypt!
+        expect(IO.read(original.path)).to_not eql(message)
+      end
+    end
+  end
+end

@@ -18,6 +18,7 @@ require 'tfa'
 require 'securerandom'
 require 'tempfile'
 require 'tmpdir'
+require 'json'
 RSpec.configure do |config|
 # The settings below are suggested to provide a good initial experience
 # with RSpec, but feel free to customize to your heart's content.