message: update BorderBox tests to remove deprecated variables
diff: @@ -23,7 +23,7 @@ describe('BorderBox', () => {
  })
  it('renders borders', () => {
  - expect(render(<BorderBox borderColor="green.5" />)).toHaveStyleRule('border-color', colors.green[5])
  + expect(render(<BorderBox borderColor="border.success" />)).toHaveStyleRule('border-color', colors.border.success)
  expect(render(<BorderBox borderBottom={0} />)).toHaveStyleRule('border-bottom', '0')
  })
  @@ -33,6 +33,6 @@ describe('BorderBox', () => {
  // the test returns the box shadow value without spaces, so had to manually provide the expected string here
  it('renders box shadow', () => {
  - expect(render(<BorderBox boxShadow="small" />)).toHaveStyleRule('box-shadow', '0 1px 0 rgba(149,157,165,0.1)')
  + expect(render(<BorderBox boxShadow="shadow.small" />)).toHaveStyleRule('box-shadow', theme.shadows.shadow.small)
  })
  })
  