1 files changed, 46 insertions, 0 deletions
diff --git a/spec/lib/gitlab/background_migration/digest_column_spec.rb b/spec/lib/gitlab/background_migration/digest_column_spec.rb
new file mode 100644
index 00000000000..3e107ac3027
--- /dev/null
+++ b/spec/lib/gitlab/background_migration/digest_column_spec.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::BackgroundMigration::DigestColumn, :migration, schema: 20180913142237 do
+  let(:personal_access_tokens) { table(:personal_access_tokens) }
+  let(:users) { table(:users) }
+
+  subject { described_class.new }
+
+  describe '#perform' do
+    context 'token is not yet hashed' do
+      before do
+        users.create(id: 1, email: 'user@example.com', projects_limit: 10)
+        personal_access_tokens.create!(id: 1, user_id: 1, name: 'pat-01', token: 'token-01')
+      end
+
+      it 'saves token digest' do
+        expect { subject.perform(PersonalAccessToken, :token, :token_digest, 1, 2) }.to(
+          change { PersonalAccessToken.find(1).token_digest }.from(nil).to(Gitlab::CryptoHelper.sha256('token-01')))
+      end
+
+      it 'erases token' do
+        expect { subject.perform(PersonalAccessToken, :token, :token_digest, 1, 2) }.to(
+          change { PersonalAccessToken.find(1).token }.from('token-01').to(nil))
+      end
+    end
+
+    context 'token is already hashed' do
+      before do
+        users.create(id: 1, email: 'user@example.com', projects_limit: 10)
+        personal_access_tokens.create!(id: 1, user_id: 1, name: 'pat-01', token_digest: 'token-digest-01')
+      end
+
+      it 'does not change existing token digest' do
+        expect { subject.perform(PersonalAccessToken, :token, :token_digest, 1, 2) }.not_to(
+          change { PersonalAccessToken.find(1).token_digest })
+      end
+
+      it 'leaves token empty' do
+        expect { subject.perform(PersonalAccessToken, :token, :token_digest, 1, 2) }.not_to(
+          change { PersonalAccessToken.find(1).token }.from(nil))
+      end
+    end
+  end
+end