1 files changed, 67 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/config/node/validator_spec.rb b/spec/lib/gitlab/ci/config/node/validator_spec.rb
new file mode 100644
index 00000000000..ad875d55384
--- /dev/null
+++ b/spec/lib/gitlab/ci/config/node/validator_spec.rb
@@ -0,0 +1,67 @@
+require 'spec_helper'
+
+describe Gitlab::Ci::Config::Node::Validator do
+  let(:validator) { Class.new(described_class) }
+  let(:validator_instance) { validator.new(node) }
+  let(:node) { spy('node') }
+
+  shared_examples 'delegated validator' do
+    context 'when node is valid' do
+      before do
+        allow(node).to receive(:test_attribute).and_return('valid value')
+      end
+
+      it 'validates attribute in node' do
+        expect(node).to receive(:test_attribute)
+        expect(validator_instance).to be_valid
+      end
+
+      it 'returns no errors' do
+        validator_instance.validate
+
+        expect(validator_instance.full_errors).to be_empty
+      end
+    end
+
+    context 'when node is invalid' do
+      before do
+        allow(node).to receive(:test_attribute).and_return(nil)
+      end
+
+      it 'validates attribute in node' do
+        expect(node).to receive(:test_attribute)
+        expect(validator_instance).to be_invalid
+      end
+
+      it 'returns errors' do
+        validator_instance.validate
+
+        expect(validator_instance.full_errors).not_to be_empty
+      end
+    end
+  end
+
+  describe 'attributes validations' do
+    before do
+      validator.class_eval do
+        validates :test_attribute, presence: true
+      end
+    end
+
+    it_behaves_like 'delegated validator'
+  end
+
+  describe 'interface validations' do
+    before do
+      validator.class_eval do
+        validate do
+          unless @node.test_attribute == 'valid value'
+            errors.add(:test_attribute, 'invalid value')
+          end
+        end
+      end
+    end
+
+    it_behaves_like 'delegated validator'
+  end
+end