Gitaly Server info for admin panel

Implements the client side for gitlab-org/gitaly#819. Which is a server
info command. This checks the server version and git binairy version on
the server.

A small UI was added for administrators, so they can check the status of
the Gitaly server. This is done for each storage the monolith knows.

Because of this commit, gitlab-org/gitlab-ce!15580 is now closed. That
MR removed the Git version too, but didn't replace it with anything.

1 files changed, 30 insertions, 0 deletions

diff --git a/spec/lib/gitaly/server_spec.rb b/spec/lib/gitaly/server_spec.rb
new file mode 100644
index 00000000000..ed5d56e91d4
--- /dev/null
+++ b/spec/lib/gitaly/server_spec.rb
@@ -0,0 +1,30 @@
+require 'spec_helper'
+
+describe Gitaly::Server do
+  describe '.all' do
+    let(:storages) { Gitlab.config.repositories.storages }
+
+    it 'includes all storages' do
+      expect(storages.count).to eq(described_class.all.count)
+      expect(storages.keys).to eq(described_class.all.map(&:storage))
+    end
+  end
+
+  subject { described_class.all.first }
+
+  it { is_expected.to respond_to(:server_version) }
+  it { is_expected.to respond_to(:git_binary_version) }
+  it { is_expected.to respond_to(:up_to_date?) }
+  it { is_expected.to respond_to(:address) }
+
+  describe 'request memoization' do
+    context 'when requesting multiple properties', :request_store do
+      it 'uses memoization for the info request' do
+        expect do
+          subject.server_version
+          subject.up_to_date?
+        end.to change { Gitlab::GitalyClient.get_request_count }.by(1)
+      end
+    end
+  end
+end