1 files changed, 28 insertions, 2 deletions
diff --git a/spec/lib/gitlab/ci/config/interpolation/inputs/base_input_spec.rb b/spec/lib/gitlab/ci/config/interpolation/inputs/base_input_spec.rb
index 30036ee68ed..b0a514cb1e2 100644
--- a/spec/lib/gitlab/ci/config/interpolation/inputs/base_input_spec.rb
+++ b/spec/lib/gitlab/ci/config/interpolation/inputs/base_input_spec.rb
@@ -4,8 +4,34 @@ require 'spec_helper'
 
 RSpec.describe Gitlab::Ci::Config::Interpolation::Inputs::BaseInput, feature_category: :pipeline_composition do
   describe '.matches?' do
-    it 'is not implemented' do
-      expect { described_class.matches?(double) }.to raise_error(NotImplementedError)
+    context 'when given is a hash' do
+      before do
+        stub_const('TestInput', Class.new(described_class))
+
+        TestInput.class_eval do
+          def self.type_name
+            'test'
+          end
+        end
+      end
+
+      context 'when the spec type matches the input type' do
+        it 'returns true' do
+          expect(TestInput.matches?({ type: 'test' })).to be_truthy
+        end
+      end
+
+      context 'when the spec type does not match the input type' do
+        it 'returns false' do
+          expect(TestInput.matches?({ type: 'string' })).to be_falsey
+        end
+      end
+    end
+
+    context 'when not given a hash' do
+      it 'returns false' do
+        expect(described_class.matches?([])).to be_falsey
+      end
     end
   end