1 files changed, 54 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/config/entry/validatable_spec.rb b/spec/lib/gitlab/ci/config/entry/validatable_spec.rb
new file mode 100644
index 00000000000..d1856801827
--- /dev/null
+++ b/spec/lib/gitlab/ci/config/entry/validatable_spec.rb
@@ -0,0 +1,54 @@
+require 'spec_helper'
+
+describe Gitlab::Ci::Config::Entry::Validatable do
+  let(:entry) { Class.new }
+
+  before do
+    entry.include(described_class)
+  end
+
+  describe '.validator' do
+    before do
+      entry.class_eval do
+        attr_accessor :test_attribute
+
+        validations do
+          validates :test_attribute, presence: true
+        end
+      end
+    end
+
+    it 'returns validator' do
+      expect(entry.validator.superclass)
+        .to be Gitlab::Ci::Config::Entry::Validator
+    end
+
+    it 'returns only one validator to mitigate leaks' do
+      expect { entry.validator }.not_to change { entry.validator }
+    end
+
+    context 'when validating entry instance' do
+      let(:entry_instance) { entry.new }
+
+      context 'when attribute is valid' do
+        before do
+          entry_instance.test_attribute = 'valid'
+        end
+
+        it 'instance of validator is valid' do
+          expect(entry.validator.new(entry_instance)).to be_valid
+        end
+      end
+
+      context 'when attribute is not valid' do
+        before do
+          entry_instance.test_attribute = nil
+        end
+
+        it 'instance of validator is invalid' do
+          expect(entry.validator.new(entry_instance)).to be_invalid
+        end
+      end
+    end
+  end
+end