Price Validations

PriceExpects.swift

it("Price validations"){
  expect(watch.price).toNot(beNil())
  expect(watch.price).to(beTruthy())                
  //evaluating boundary cases
  expect(watch.price).toNot(beLessThan(0))
  expect(watch.price).to(beCloseTo(11, within: 0.69))
  expect(watch.price).to(beLessThanOrEqualTo(11.69))
  expect(watch.price).to(beGreaterThan(Double.pi))
                    
  expect(watch.price).toNot(beGreaterThan(11.69))
  expect(watch.price).toNot(beGreaterThan(Double.infinity))
  expect(watch.price).toNot(be(Double.signalingNaN))
  expect(watch.price).toNot(be(Double.nan))
}