# default users
def alice
  @alice ||= Fabricate(:user, diaspora_id: "alice@localhost:3000")
end

def bob
  @bob ||= Fabricate(:user, diaspora_id: "bob@localhost:3000")
end

# callback expectation helper
def expect_callback(*opts)
  expect(DiasporaFederation.callbacks).to receive(:trigger).with(*opts)
end

# signature methods
def add_signatures(hash, klass=described_class)
  properties = klass.new(hash).send(:enriched_properties)
  hash[:author_signature] = properties[:author_signature]
  hash[:parent_author_signature] = properties[:parent_author_signature]
end

def sign_with_key(privkey, signature_data)
  Base64.strict_encode64(privkey.sign(OpenSSL::Digest::SHA256.new, signature_data))
end

def verify_signature(pubkey, signature, signed_string)
  pubkey.verify(OpenSSL::Digest::SHA256.new, Base64.decode64(signature), signed_string)
end