public async Task UpdateVendor_ReturnsTrue()
{
// arrange
var vendor = new Vendor {
id = 123, userName = "******", name = "name1", website = "website_1"
};
var address = new Address {
id = 456, userName = "******", street = "123 Main St", city = "State College", state = "PA", zip = 16803
};
_vendorsQueryMock.Setup(x => x.Update(vendor))
.Returns(Task.Factory.StartNew(() => vendor));
_addressQueryMock.Setup(x => x.GetByUserName("*****@*****.**"))
.Returns(Task.Factory.StartNew(() => address));
_vendorsQueryMock.Setup(x => x.GetByUserName("*****@*****.**"))
.Returns(Task.Factory.StartNew(() => vendor));
// act
var task = await _sut.Update(vendor);
// assert
Assert.IsType <OkObjectResult>(task);
var result = task as OkObjectResult;
Assert.Equal(true, result.Value);
}