extract common method

lib/gitlab/gpg.rb

@@ -8,10 +8,8 @@ module Gitlab
       def add(key)
         GPGME::Key.import(key)
       end
-    end
 
       def fingerprints_from_key(key)
-      using_tmp_keychain do
         import = GPGME::Key.import(key)
 
         return [] if import.imported == 0
@@ -20,13 +18,15 @@ module Gitlab
       end
     end
 
+    def fingerprints_from_key(key)
+      using_tmp_keychain do
+        CurrentKeyChain.fingerprints_from_key(key)
+      end
+    end
+
     def primary_keyids_from_key(key)
       using_tmp_keychain do
-        import = GPGME::Key.import(key)
-
-        return [] if import.imported == 0
-
-        fingerprints = import.imports.map(&:fingerprint)
+        fingerprints = CurrentKeyChain.fingerprints_from_key(key)
 
         GPGME::Key.find(:public, fingerprints).map { |raw_key| raw_key.primary_subkey.keyid }
       end
@@ -34,11 +34,7 @@ module Gitlab
 
     def emails_from_key(key)
       using_tmp_keychain do
-        import = GPGME::Key.import(key)
-
-        return [] if import.imported == 0
-
-        fingerprints = import.imports.map(&:fingerprint)
+        fingerprints = CurrentKeyChain.fingerprints_from_key(key)
 
         GPGME::Key.find(:public, fingerprints).flat_map { |raw_key| raw_key.uids.map(&:email) }
       end

spec/lib/gitlab/gpg_spec.rb

@@ -2,16 +2,15 @@ require 'rails_helper'
 
 describe Gitlab::Gpg do
   describe '.fingerprints_from_key' do
-    it 'returns the fingerprint' do
-      expect(
-        described_class.fingerprints_from_key(GpgHelpers::User1.public_key)
-      ).to eq [GpgHelpers::User1.fingerprint]
+    before do
+      # make sure that each method is using the temporary keychain
+      expect(described_class).to receive(:using_tmp_keychain).and_call_original
     end
 
-    it 'returns an empty array when the key is invalid' do
-      expect(
-        described_class.fingerprints_from_key('bogus')
-      ).to eq []
+    it 'returns CurrentKeyChain.fingerprints_from_key' do
+      expect(Gitlab::Gpg::CurrentKeyChain).to receive(:fingerprints_from_key).with(GpgHelpers::User1.public_key)
+
+      described_class.fingerprints_from_key(GpgHelpers::User1.public_key)
     end
   end
 
@@ -65,4 +64,18 @@ describe Gitlab::Gpg::CurrentKeyChain do
       )
     end
   end
+
+  describe '.fingerprints_from_key' do
+    it 'returns the fingerprint' do
+      expect(
+        described_class.fingerprints_from_key(GpgHelpers::User1.public_key)
+      ).to eq [GpgHelpers::User1.fingerprint]
+    end
+
+    it 'returns an empty array when the key is invalid' do
+      expect(
+        described_class.fingerprints_from_key('bogus')
+      ).to eq []
+    end
+  end
 end