1 files changed, 113 insertions, 0 deletions
diff --git a/spec/validators/nested_attributes_duplicates_validator_spec.rb b/spec/validators/nested_attributes_duplicates_validator_spec.rb
new file mode 100644
index 00000000000..f59e422e5d4
--- /dev/null
+++ b/spec/validators/nested_attributes_duplicates_validator_spec.rb
@@ -0,0 +1,113 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe NestedAttributesDuplicatesValidator do
+  let(:validator) { described_class.new(attributes: [attribute], **options) }
+
+  describe '#validate_each' do
+    let(:project) { build(:project) }
+    let(:record) { project }
+    let(:attribute) { :variables }
+    let(:value) { project.variables }
+
+    subject { validator.validate_each(record, attribute, value) }
+
+    context 'with no scope' do
+      let(:options) { {} }
+      let(:variables) { build_list(:ci_variable, 2, project: project) }
+
+      before do
+        project.variables << variables
+      end
+
+      it 'does not have any errors' do
+        subject
+
+        expect(project.errors.empty?).to be true
+      end
+
+      context 'with duplicates' do
+        before do
+          project.variables.build(key: variables.first.key, value: 'dummy_value')
+        end
+
+        it 'has a duplicate key error' do
+          subject
+
+          expect(project.errors).to have_key(:variables)
+        end
+      end
+    end
+
+    context 'with a scope attribute' do
+      let(:options) { { scope: :environment_scope } }
+      let(:first_variable) { build(:ci_variable, key: 'test_key', environment_scope: '*', project: project) }
+      let(:second_variable) { build(:ci_variable, key: 'test_key', environment_scope: 'prod', project: project) }
+
+      before do
+        project.variables << first_variable
+        project.variables << second_variable
+      end
+
+      it 'does not have any errors' do
+        subject
+
+        expect(project.errors.empty?).to be true
+      end
+
+      context 'with duplicates' do
+        before do
+          project.variables.build(key: second_variable.key, value: 'dummy_value', environment_scope: second_variable.environment_scope)
+        end
+
+        it 'has a duplicate key error' do
+          subject
+
+          expect(project.errors).to have_key(:variables)
+        end
+      end
+    end
+
+    context 'with a child attribute' do
+      let(:release) { build(:release) }
+      let(:first_link) { build(:release_link, name: 'test1', url: 'https://www.google1.com', release: release) }
+      let(:second_link) { build(:release_link, name: 'test2', url: 'https://www.google2.com', release: release) }
+      let(:record) { release }
+      let(:attribute) { :links }
+      let(:value) { release.links }
+      let(:options) { { scope: :release, child_attributes: %i[name url] } }
+
+      before do
+        release.links << first_link
+        release.links << second_link
+      end
+
+      it 'does not have any errors' do
+        subject
+
+        expect(release.errors.empty?).to be true
+      end
+
+      context 'when name is duplicated' do
+        let(:second_link) { build(:release_link, name: 'test1', release: release) }
+
+        it 'has a duplicate error' do
+          subject
+
+          expect(release.errors).to have_key(attribute)
+        end
+      end
+
+      context 'when url is duplicated' do
+        let(:second_link) { build(:release_link, url: 'https://www.google1.com', release: release) }
+
+        it 'has a duplicate error' do
+          subject
+
+          expect(release.errors).to have_key(attribute)
+        end
+      end
+    end
+  end
+end