1 files changed, 50 insertions, 0 deletions
diff --git a/spec/support_specs/helpers/stub_saas_features_spec.rb b/spec/support_specs/helpers/stub_saas_features_spec.rb
new file mode 100644
index 00000000000..ed973071a6d
--- /dev/null
+++ b/spec/support_specs/helpers/stub_saas_features_spec.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe StubSaasFeatures, feature_category: :shared do
+  describe '#stub_saas_features' do
+    using RSpec::Parameterized::TableSyntax
+
+    let(:feature_name) { '_some_saas_feature_' }
+
+    context 'when checking global state' do
+      where(:feature_value) do
+        [true, false]
+      end
+
+      with_them do
+        before do
+          stub_saas_features(feature_name => feature_value)
+        end
+
+        it { expect(::Gitlab::Saas.feature_available?(feature_name)).to eq(feature_value) }
+      end
+    end
+
+    context 'when value is not boolean' do
+      it 'raises an error' do
+        expect do
+          stub_saas_features(feature_name => '_not_boolean_')
+        end.to raise_error(ArgumentError, /value must be boolean/)
+      end
+    end
+
+    it 'subsequent run changes state' do
+      # enable FF on all
+      stub_saas_features({ feature_name => true })
+      expect(::Gitlab::Saas.feature_available?(feature_name)).to eq(true)
+
+      # disable FF on all
+      stub_saas_features({ feature_name => false })
+      expect(::Gitlab::Saas.feature_available?(feature_name)).to eq(false)
+    end
+
+    it 'handles multiple features' do
+      stub_saas_features(feature_name => false, '_some_new_feature_' => true)
+
+      expect(::Gitlab::Saas.feature_available?(feature_name)).to eq(false)
+      expect(::Gitlab::Saas.feature_available?('_some_new_feature_')).to eq(true)
+    end
+  end
+end