1 files changed, 106 insertions, 0 deletions
diff --git a/spec/lib/gitlab/mail_room/mail_room_spec.rb b/spec/lib/gitlab/mail_room/mail_room_spec.rb
new file mode 100644
index 00000000000..cb3e214d38b
--- /dev/null
+++ b/spec/lib/gitlab/mail_room/mail_room_spec.rb
@@ -0,0 +1,106 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::MailRoom do
+  let(:default_port) { 143 }
+  let(:default_config) do
+    {
+      enabled: false,
+      port: default_port,
+      ssl: false,
+      start_tls: false,
+      mailbox: 'inbox',
+      idle_timeout: 60,
+      log_path: Rails.root.join('log', 'mail_room_json.log').to_s
+    }
+  end
+
+  before do
+    described_class.reset_config!
+    allow(File).to receive(:exist?).and_return true
+  end
+
+  describe '#config' do
+    context 'if the yml file cannot be found' do
+      before do
+        allow(File).to receive(:exist?).and_return false
+      end
+
+      it 'returns an empty hash' do
+        expect(described_class.config).to be_empty
+      end
+    end
+
+    before do
+      allow(described_class).to receive(:load_from_yaml).and_return(default_config)
+    end
+
+    it 'sets up config properly' do
+      expected_result = default_config
+
+      expect(described_class.config).to match expected_result
+    end
+
+    context 'when a config value is missing from the yml file' do
+      it 'overwrites missing values with the default' do
+        stub_config(port: nil)
+
+        expect(described_class.config[:port]).to eq default_port
+      end
+    end
+
+    describe 'setting up redis settings' do
+      let(:fake_redis_queues) { double(url: "localhost", sentinels: "yes, them", sentinels?: true) }
+
+      before do
+        allow(Gitlab::Redis::Queues).to receive(:new).and_return(fake_redis_queues)
+      end
+
+      target_proc = proc { described_class.config[:redis_url] }
+
+      it_behaves_like 'only truthy if both enabled and address are truthy', target_proc
+    end
+
+    describe 'setting up the log path' do
+      context 'if the log path is a relative path' do
+        it 'expands the log path to an absolute value' do
+          stub_config(log_path: 'tiny_log.log')
+
+          new_path = Pathname.new(described_class.config[:log_path])
+          expect(new_path.absolute?).to be_truthy
+        end
+      end
+
+      context 'if the log path is absolute path' do
+        it 'leaves the path as-is' do
+          new_path = '/dev/null'
+          stub_config(log_path: new_path)
+
+          expect(described_class.config[:log_path]).to eq new_path
+        end
+      end
+    end
+  end
+
+  describe '#enabled?' do
+    target_proc = proc { described_class.enabled? }
+
+    it_behaves_like 'only truthy if both enabled and address are truthy', target_proc
+  end
+
+  describe '#reset_config?' do
+    it 'resets config' do
+      described_class.instance_variable_set(:@config, { some_stuff: 'hooray' })
+
+      described_class.reset_config!
+
+      expect(described_class.instance_variable_get(:@config)).to be_nil
+    end
+  end
+
+  def stub_config(override_values)
+    modified_config = default_config.merge(override_values)
+    allow(described_class).to receive(:load_from_yaml).and_return(modified_config)
+  end
+end