[added] Test for carousel control behaviour with wrap=true

test/CarouselSpec.jsx

@@ -73,4 +73,45 @@ describe('Carousel', function () {
       )[0]
     );
   });
+
+  it('Should show all controls on the first/last image if wrap is true', function () {
+    var instance = ReactTestUtils.renderIntoDocument(
+      <Carousel activeIndex={0} controls={true} wrap={true}>
+        <CarouselItem ref="item1">Item 1 content</CarouselItem>
+        <CarouselItem ref="item2">Item 2 content</CarouselItem>
+      </Carousel>
+    );
+
+    var backButton = ReactTestUtils.findRenderedDOMComponentWithClass(instance, 'left');
+
+    assert.ok(backButton);
+    assert.equal(backButton.props.href, '#prev');
+
+    instance = ReactTestUtils.renderIntoDocument(
+      <Carousel activeIndex={1} controls={true} wrap={true}>
+        <CarouselItem ref="item1">Item 1 content</CarouselItem>
+        <CarouselItem ref="item2">Item 2 content</CarouselItem>
+      </Carousel>
+    );
+
+    var nextButton = ReactTestUtils.findRenderedDOMComponentWithClass(instance, 'right');
+
+    assert.ok(nextButton);
+    assert.equal(nextButton.props.href, '#next');
+  });
+
+  it('Should not show the prev button on the first image if wrap is false', function () {
+    var instance = ReactTestUtils.renderIntoDocument(
+      <Carousel activeIndex={0} controls={true} wrap={false}>
+        <CarouselItem ref="item1">Item 1 content</CarouselItem>
+        <CarouselItem ref="item2">Item 2 content</CarouselItem>
+      </Carousel>
+    );
+
+    var backButtons = ReactTestUtils.scryRenderedDOMComponentsWithClass(instance, 'left');
+    var nextButtons = ReactTestUtils.scryRenderedDOMComponentsWithClass(instance, 'right');
+
+    assert.equal(backButtons.length, 0);
+    assert.equal(nextButtons.length, 1);
+  });
 });