Implement GitLab QA release inflection strategy

1 files changed, 62 insertions, 0 deletions

diff --git a/qa/spec/runtime/release_spec.rb b/qa/spec/runtime/release_spec.rb
new file mode 100644
index 00000000000..4995ad48ee6
--- /dev/null
+++ b/qa/spec/runtime/release_spec.rb
@@ -0,0 +1,62 @@
+describe QA::Runtime::Release do
+  context 'when release version has extension strategy' do
+    subject { described_class.new('CE') }
+    let(:strategy) { spy('CE::Strategy') }
+
+    before do
+      stub_const('QA::CE::Strategy', strategy)
+    end
+
+    describe '#has_strategy?' do
+      it 'return true' do
+        expect(subject.has_strategy?).to be true
+      end
+    end
+
+    describe '#strategy' do
+      it 'return the strategy constant' do
+        expect(subject.strategy).to eq QA::CE::Strategy
+      end
+    end
+
+    describe 'delegated class methods' do
+      it 'delegates all calls to strategy class' do
+        described_class.some_method(1, 2)
+
+        expect(strategy).to have_received(:some_method)
+          .with(1, 2)
+      end
+    end
+  end
+
+  context 'when release version does not have extension strategy' do
+    subject { described_class.new('CE') }
+
+    describe '#has_strategy?' do
+      it 'returns false' do
+        expect(subject.has_strategy?).to be false
+      end
+    end
+
+    describe '#strategy' do
+      it 'raises error' do
+        expect { subject.strategy }.to raise_error(NameError)
+      end
+    end
+
+    describe 'delegated class methods' do
+      it 'behaves like a null object and does nothing' do
+        expect { described_class.some_method(2, 3) }.not_to raise_error
+      end
+    end
+  end
+
+  context 'when release version is invalid or unspecified' do
+    describe '#new' do
+      it 'raises an exception' do
+        expect { described_class.new(nil) }
+          .to raise_error(described_class::UnspecifiedReleaseError)
+      end
+    end
+  end
+end