1 files changed, 27 insertions, 0 deletions
diff --git a/qa/spec/support/run_spec.rb b/qa/spec/support/run_spec.rb
new file mode 100644
index 00000000000..62eed71012e
--- /dev/null
+++ b/qa/spec/support/run_spec.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+RSpec.describe QA::Support::Run do
+  let(:class_instance) { (Class.new { include QA::Support::Run }).new }
+  let(:response) { 'successful response' }
+  let(:command) { 'some command' }
+  let(:expected_result) { described_class::Result.new("#{command} 2>&1", 0, response) }
+
+  it 'runs successfully' do
+    expect(Open3).to receive(:capture2e).and_return([+response, double(exitstatus: 0)])
+
+    expect(class_instance.run(command)).to eq(expected_result)
+  end
+
+  it 'retries twice and succeeds the third time' do
+    allow(Open3).to receive(:capture2e).and_return([+'', double(exitstatus: 1)]).twice
+    allow(Open3).to receive(:capture2e).and_return([+response, double(exitstatus: 0)])
+
+    expect(class_instance.run(command)).to eq(expected_result)
+  end
+
+  it 'raises an exception on 3rd failure' do
+    allow(Open3).to receive(:capture2e).and_return([+'FAILURE', double(exitstatus: 1)]).thrice
+
+    expect { class_instance.run(command) }.to raise_error(QA::Support::Run::CommandError, /The command .* failed \(1\) with the following output:\nFAILURE/)
+  end
+end