Stop attempting connections to unreachable hosts

1 files changed, 35 insertions, 0 deletions

diff --git a/spec/unit/core/http_spec.rb b/spec/unit/core/http_spec.rb
new file mode 100644
index 0000000..b585db4
--- /dev/null
+++ b/spec/unit/core/http_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+RSpec.describe ::Spandx::Core::Http do
+  subject { described_class.new(retries: 1) }
+
+  describe '#get' do
+    context 'when a connection to a host failed previously' do
+      let(:down_host) { 'nexus.example.com' }
+      let(:up_host) { 'git.example.com' }
+
+      before do
+        down_url = "https://#{down_host}/#{SecureRandom.uuid}"
+        stub_request(:get, down_url).to_timeout
+        subject.get(down_url)
+      end
+
+      it 'stops attempting to connect to an unreachable host after `n` failures' do
+        another_down_url = "https://#{down_host}/#{SecureRandom.uuid}"
+        default_value = SecureRandom.uuid
+
+        stub_request(:get, another_down_url).to_raise(StandardError)
+
+        expect(subject.get(another_down_url, default: default_value)).to eql(default_value)
+      end
+
+      it 'continues to connect to hosts that are still up' do
+        up_url = "https://#{up_host}/#{SecureRandom.uuid}"
+
+        stub_request(:get, up_url).to_return(status: 200)
+
+        expect(subject.get(up_url)).to be_a_kind_of(Net::HTTPSuccess)
+      end
+    end
+  end
+end