Allow users to update their OpenPGP pubkey

spec/services/user_manager/update_pgp_key_spec.rb

@@ -0,0 +1,74 @@
+require 'rails_helper'
+
+RSpec.describe UserManager::UpdatePgpKey, type: :model do
+  include ActiveJob::TestHelper
+
+  let(:alice) { create :user, cn: "alice" }
+  let(:dn)    { "cn=alice,ou=kosmos.org,cn=users,dc=kosmos,dc=org" }
+  let(:pubkey_asc) { File.read("#{Rails.root}/spec/fixtures/files/pgp_key_valid_alice.asc") }
+  let(:fingerprint) { "EB85BB5FA33A75E15E944E63F231550C4F47E38E" }
+
+  before do
+    allow(alice).to receive(:dn).and_return(dn)
+    allow(alice).to receive(:ldap_entry).and_return({
+      uid: alice.cn, ou: alice.ou, pgp_key: nil
+    })
+  end
+
+  describe "#call" do
+    context "with valid key" do
+      before do
+        alice.pgp_pubkey = pubkey_asc
+
+        allow(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: pubkey_asc)
+      end
+
+      after do
+        alice.gnupg_key.delete!
+      end
+
+      it "imports the key into the GnuPG keychain" do
+        described_class.call(user: alice)
+        expect(alice.gnupg_key).to be_present
+      end
+
+      it "stores the key's fingerprint on the user record" do
+        described_class.call(user: alice)
+        expect(alice.pgp_fpr).to eq(fingerprint)
+      end
+
+      it "updates the user's LDAP entry with the new key" do
+        expect(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: pubkey_asc)
+        described_class.call(user: alice)
+      end
+    end
+
+    context "with empty key" do
+      before do
+        alice.update pgp_fpr: fingerprint
+        alice.pgp_pubkey = ""
+
+        allow(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: "")
+      end
+
+      it "does not attempt to import the key" do
+        expect(GPGME::Key).not_to receive(:import)
+        described_class.call(user: alice)
+      end
+
+      it "removes the key's fingerprint from the user record" do
+        described_class.call(user: alice)
+        expect(alice.pgp_fpr).to be_nil
+      end
+
+      it "removes the key from the user's LDAP entry" do
+        expect(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: "")
+        described_class.call(user: alice)
+      end
+    end
+  end
+end