diff --git a/packages/vx-shape/test/BarGroup.test.js b/packages/vx-shape/test/BarGroup.test.js
index d3deacff1..3666abb22 100644
--- a/packages/vx-shape/test/BarGroup.test.js
+++ b/packages/vx-shape/test/BarGroup.test.js
@@ -26,4 +26,10 @@ describe('<BarGroup />', () => {
     expect(console.error).toBeCalled()
     expect(console.error.mock.calls[0][0]).toEqual("Warning: Failed prop type: The prop `data` is marked as required in `BarGroup`, but its value is `undefined`.\n    in BarGroup")
   })
+
+  test('it should set top & left props', () => {
+    const wrapper = shallow(<BarGroup className='test' data={[]} top={2} left={3} />)
+    expect(wrapper.prop('top')).toEqual(2)
+    expect(wrapper.prop('left')).toEqual(3)
+  })
 })
diff --git a/packages/vx-shape/test/BarStack.test.js b/packages/vx-shape/test/BarStack.test.js
index a0ce00f28..c8662efad 100644
--- a/packages/vx-shape/test/BarStack.test.js
+++ b/packages/vx-shape/test/BarStack.test.js
@@ -6,4 +6,55 @@ describe('<BarStack />', () => {
   test('it should be defined', () => {
     expect(BarStack).toBeDefined()
   })
+
+  test('it should have className .vx-bar-stack', () => {
+    const wrapper = shallow(
+      <BarStack
+        data={[]}
+        top={2}
+        left={3}
+        x={d => d}
+        xScale={d => d}
+        yScale={d => d}
+        zScale={d => d}
+        keys={[]}
+      />
+    )
+    expect(wrapper.prop('className')).toEqual('vx-bar-stack')
+  })
+
+  test('it should set className prop', () => {
+    const wrapper = shallow(
+      <BarStack
+        className='test'
+        data={[]}
+        top={2}
+        left={3}
+        x={d => d}
+        xScale={d => d}
+        yScale={d => d}
+        zScale={d => d}
+        keys={[]}
+      />
+    )
+    expect(wrapper.prop('className')).toEqual('vx-bar-stack test')
+  })
+
+  test('it should set top & left props', () => {
+    const wrapper = shallow(
+      <BarStack
+        className='test'
+        data={[]}
+        top={2}
+        left={3}
+        x={d => d}
+        xScale={d => d}
+        yScale={d => d}
+        zScale={d => d}
+        keys={[]}
+      />
+    )
+    expect(wrapper.prop('top')).toEqual(2)
+    expect(wrapper.prop('left')).toEqual(3)
+  })
 })
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