Add some specs for Element.expose

Author: elia

spec/element_spec.rb

@@ -224,3 +224,38 @@
     expect(foo.html).to include('different content')
   end
 end
+
+describe 'Element.expose' do
+  subject(:element) { Element.new }
+  before do
+    `$.fn.exposableMethod = function() {return 123}`
+    `$.fn.exposableMethod2 = function() {return 12}`
+  end
+
+  after do
+    `delete $.fn.exposableMethod; delete $.fn.$exposableMethod;`
+    `delete $.fn.exposableMethod2; delete $.fn.$exposableMethod2;`
+  end
+
+  it 'exposes methods defined on $.fn' do
+    expect(element).not_to respond_to(:exposableMethod)
+    Element.expose :exposableMethod
+    expect(element).to respond_to(:exposableMethod)
+    expect(element.exposableMethod).to eq(123)
+  end
+
+  it 'work if exposing the same method multiple times' do
+    Element.expose :exposableMethod
+    Element.expose :exposableMethod
+    expect(element.exposableMethod).to eq(123)
+
+    Element.expose :exposableMethod, :exposableMethod
+    expect(element.exposableMethod).to eq(123)
+  end
+
+  it 'work if exposing multiple methods' do
+    Element.expose :exposableMethod, :exposableMethod2
+    expect(element.exposableMethod).to eq(123)
+    expect(element.exposableMethod2).to eq(12)
+  end
+end