FIX: verify presence of 'sso url' before enabling 'enable sso'

spec/components/validators/enable_sso_validator_spec.rb

@@ -0,0 +1,48 @@
+require 'rails_helper'
+
+RSpec.describe EnableSsoValidator do
+  subject { described_class.new }
+
+  describe '#valid_value?' do
+    describe "when 'sso url' is empty" do
+      before do
+        SiteSetting.sso_url = ""
+      end
+
+      describe 'when val is false' do
+        it 'should be valid' do
+          expect(subject.valid_value?('f')).to eq(true)
+        end
+      end
+
+      describe 'when value is true' do
+        it 'should not be valid' do
+          expect(subject.valid_value?('t')).to eq(false)
+
+          expect(subject.error_message).to eq(I18n.t(
+            'site_settings.errors.sso_url_is_empty'
+          ))
+        end
+      end
+    end
+
+    describe "when 'sso url' is present" do
+      before do
+        SiteSetting.sso_url = "https://www.example.com/sso"
+      end
+
+      describe 'when value is false' do
+        it 'should be valid' do
+          expect(subject.valid_value?('f')).to eq(true)
+        end
+      end
+
+      describe 'when value is true' do
+        it 'should be valid' do
+          expect(subject.valid_value?('t')).to eq(true)
+        end
+      end
+    end
+
+  end
+end