public void GetCustomerAsync_Throws_HttpException()
 {
     var api = new CaseStackApiMock();
     var exception = Assert.ThrowsAsync<HttpException>(() => api.GetCustomerAsync("err"));
     Assert.True(500 == exception.GetHttpCode());
 }
 public async Task GetCustomerAsync_Customer_NotNull()
 {
     var api = new CaseStackApiMock();
     var customer = await api.GetCustomerAsync("foo");
     Assert.IsNotNull(customer);
 }