1 files changed, 12 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/status/extended_spec.rb b/spec/lib/gitlab/ci/status/extended_spec.rb
new file mode 100644
index 00000000000..120e121aae5
--- /dev/null
+++ b/spec/lib/gitlab/ci/status/extended_spec.rb
@@ -0,0 +1,12 @@
+require 'spec_helper'
+
+describe Gitlab::Ci::Status::Extended do
+  subject do
+    Class.new.extend(described_class)
+  end
+
+  it 'requires subclass to implement matcher' do
+    expect { subject.matches?(double) }
+      .to raise_error(NotImplementedError)
+  end
+end