Context("when has Capabilities", func() {
			BeforeEach(func() {
				stackDetails.Capabilities = []string{"test-capability"}
				updateStackInput.Capabilities = aws.StringSlice([]string{"test-capability"})
			})

			It("makes the proper call", func() {
				err := stack.Modify(stackName, stackDetails)
				Expect(err).ToNot(HaveOccurred())
			})
		})

		Context("when has NotificationARNs", func() {
			BeforeEach(func() {
				stackDetails.NotificationARNs = []string{"test-notification-arn"}
				updateStackInput.NotificationARNs = aws.StringSlice([]string{"test-notification-arn"})
			})

			It("makes the proper call", func() {
				err := stack.Modify(stackName, stackDetails)
				Expect(err).ToNot(HaveOccurred())
			})
		})

		Context("when has Parameters", func() {
			BeforeEach(func() {
				stackDetails.Parameters = map[string]string{"test-parameter-key-1": "test-parameter-value-1"}
				updateStackInput.Parameters = []*cloudformation.Parameter{
					&cloudformation.Parameter{ParameterKey: aws.String("test-parameter-key-1"), ParameterValue: aws.String("test-parameter-value-1")},
				}
			})