1 files changed, 44 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/config/header/spec_spec.rb b/spec/lib/gitlab/ci/config/header/spec_spec.rb
new file mode 100644
index 00000000000..cb4237f84ce
--- /dev/null
+++ b/spec/lib/gitlab/ci/config/header/spec_spec.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Ci::Config::Header::Spec, feature_category: :pipeline_composition do
+  let(:factory) { Gitlab::Config::Entry::Factory.new(described_class).value(spec_hash) }
+
+  subject(:config) { factory.create!.tap(&:compose!) }
+
+  context 'when spec contains default values for inputs' do
+    let(:spec_hash) do
+      {
+        inputs: {
+          foo: {
+            default: 'bar'
+          }
+        }
+      }
+    end
+
+    it 'passes validations' do
+      expect(config).to be_valid
+      expect(config.errors).to be_empty
+    end
+
+    it 'returns the value' do
+      expect(config.value).to eq(spec_hash)
+    end
+  end
+
+  context 'when spec contains unknown keywords' do
+    let(:spec_hash) { { test: 123 } }
+    let(:expected_errors) { ['spec config contains unknown keys: test'] }
+
+    it 'fails validations' do
+      expect(config).not_to be_valid
+      expect(config.errors).to eq(expected_errors)
+    end
+
+    it 'returns the value' do
+      expect(config.value).to eq(spec_hash)
+    end
+  end
+end