Added a test for alias compatibility

spec/lib/breadcrumbs_spec.rb

@@ -46,29 +46,54 @@ def test_models_path
     end
   end
 
-  before do
-    options = { :scope => [:breadcrumbs, 'test'] }
-    [:class_i18n, :instance_i18n, :show, :symbolized].each do |name|
-      I18n.expects(:t).with(name, options).returns(name.to_s)
+  describe 'Breadcrumbs generation' do
+
+    before do
+      options = { :scope => [:breadcrumbs, 'test'] }
+      [:class_i18n, :instance_i18n, :show, :symbolized].each do |name|
+        I18n.expects(:t).with(name, options).returns(name.to_s)
+      end
+
+      name = :base_i18n
+      options = { :scope => [:breadcrumbs, 'base_test'] }
+      I18n.expects(:t).with(name, options).returns(name)
+
+      @controller = TestController.new
+      @controller.process(:show)
     end
 
-    name = :base_i18n
-    options = { :scope => [:breadcrumbs, 'base_test'] }
-    I18n.expects(:t).with(name, options).returns(name)
+    it "have breadcrumbs" do
+      [:base, :base_i18n, :class, :class_i18n, :instance, :instance_i18n, :test_model, :symbolized].each do |name|
+        path = "/#{name}"
+        idx = @controller.breadcrumbs.index { |b| b[:name] == name.to_s && b[:url] == path }
+        expect(idx).to be, -> { name }
+      end
 
-    @controller = TestController.new
-    @controller.process(:show)
+      idx = @controller.breadcrumbs.index { |b| b[:name] == "show" && b[:url] == '' }
+      expect(idx).to be
+    end
   end
 
-  it "have breadcrumbs" do
-    [:base, :base_i18n, :class, :class_i18n, :instance, :instance_i18n, :test_model, :symbolized].each do |name|
-      path = "/#{name}"
-      idx = @controller.breadcrumbs.index { |b| b[:name] == name.to_s && b[:url] == path }
-      expect(idx).to be, -> { name }
+  describe 'BreadcrumbsOnRails compatibility' do
+    class SomeController < AbstractController::Base
+    end
+    let(:logger) { double('logger').as_null_object }
+    before { allow(::Rails).to receive(:logger).and_return(logger) }
+
+    context 'when BreadcrumbsOnRails is defined' do
+      before do
+        stub_const('BreadcrumbsOnRails', 1)
+        expect(defined?(::BreadcrumbsOnRails)).to be_truthy
+        expect(logger).to receive(:info).with /BreadcrumbsOnRails detected/
+        SomeController.send(:include, Twitter::Bootstrap::Breadcrumbs)
+      end
+
+      it 'does not define aliases' do
+        expect(SomeController).to respond_to :add_bootstrap_breadcrumb
+        expect(SomeController).not_to respond_to :add_breadcrumb
+      end
     end
 
-    idx = @controller.breadcrumbs.index { |b| b[:name] == "show" && b[:url] == '' }
-    expect(idx).to be
   end
 
 end