Add configuration specs for GitHubApp::Configuration

Signed-off-by: Rodrigo Nardi <rnardi@netdef.org>

Author: RodrigoMNardi

spec/lib/helpers/configuration_spec.rb

@@ -0,0 +1,103 @@
+#  SPDX-License-Identifier: BSD-2-Clause
+#
+#  configuration_spec.rb
+#  Part of NetDEF CI System
+#
+#  Copyright (c) 2025 by
+#  Network Device Education Foundation, Inc. ("NetDEF")
+#
+#  frozen_string_literal: true
+
+describe GitHubApp::Configuration do
+  let(:config_path) { File.expand_path('config.yml', File.join(File.dirname(__FILE__), '../../../')) }
+  let(:default_config) do
+    {
+      'debug' => true,
+      'ci' => { 'url' => 'https://custom.ci.url' }
+    }
+  end
+
+  before do
+    allow(YAML).to receive(:load_file).and_return(default_config)
+    if described_class.instance_variable_defined?(:@singleton__instance__)
+      described_class.__send__(:remove_instance_variable, :@singleton__instance__)
+    end
+  end
+
+  describe '.instance' do
+    it 'returns a singleton instance' do
+      expect(described_class.instance).to be_a(described_class)
+      expect(described_class.instance).to equal(described_class.instance)
+    end
+  end
+
+  describe '#config' do
+    it 'loads the configuration from YAML' do
+      expect(described_class.instance.config).to eq(default_config)
+    end
+  end
+
+  describe '#debug?' do
+    context 'when debug is true' do
+      it 'returns true' do
+        expect(described_class.instance.debug?).to be true
+      end
+    end
+
+    context 'when debug is false' do
+      before do
+        allow(YAML).to receive(:load_file).and_return(default_config.merge('debug' => false))
+      end
+
+      it 'returns false' do
+        expect(described_class.instance.debug?).to be false
+      end
+    end
+
+    context 'when debug key is missing' do
+      before do
+        allow(YAML).to receive(:load_file).and_return(default_config.except('debug'))
+      end
+
+      it 'returns false' do
+        expect(described_class.instance.debug?).to be false
+      end
+    end
+  end
+
+  describe '#ci_url' do
+    context 'when ci url is present' do
+      it 'returns the configured ci url' do
+        expect(described_class.instance.ci_url).to eq('https://custom.ci.url')
+      end
+    end
+
+    context 'when ci key is missing' do
+      before do
+        allow(YAML).to receive(:load_file).and_return(default_config.except('ci'))
+      end
+
+      it 'returns the default ci url' do
+        expect(described_class.instance.ci_url).to eq('https://ci1.netdef.org')
+      end
+    end
+
+    context 'when ci url is missing' do
+      before do
+        allow(YAML).to receive(:load_file).and_return(default_config.merge('ci' => {}))
+      end
+
+      it 'returns the default ci url' do
+        expect(described_class.instance.ci_url).to eq('https://ci1.netdef.org')
+      end
+    end
+  end
+
+  describe '#reload' do
+    it 'reloads the configuration' do
+      expect(YAML).to receive(:load_file).twice.and_return(default_config)
+      instance = described_class.instance
+      instance.reload
+    end
+  end
+end