public async Task GivenCommand_AndPrinterId_AndPrinterNotExists_WhenHandled_ThenStorageGetCalled_AndDomainMappedToDto_AndResponseReturned()
{
// Arrange
var mockDataStorage = new Mock <IDataStorageService <Domain.Models.Printer> >();
var mockMapper = new Mock <IMapper>();
var sut = new GetPrinterByIdQueryHandler(
mockDataStorage.Object,
mockMapper.Object);
var query = new GetPrinterByIdQuery
{
Id = Guid.NewGuid().ToString()
};
mockDataStorage.Setup(x => x.Get(
It.IsAny <string>(),
It.IsAny <CancellationToken>()))
.ReturnsAsync((Domain.Models.Printer)null);
// Act
var result = await sut.Handle(
query,
CancellationToken.None);
// Assert
mockDataStorage.Verify(x => x.Get(
It.Is <string>(y => y == query.Id),
It.IsAny <CancellationToken>()), Times.Once);
Assert.NotNull(result.Error);
Assert.Equal(HttpStatusCode.NotFound, result.Error.HttpStatusCode);
Assert.Contains(query.Id, result.Error.Message);
}
public async Task GivenCommand_AndPrinterId_AndPrinterExists_WhenHandled_ThenStorageGetCalled_AndDomainMappedToDto_AndResponseReturned()
{
// Arrange
var mockDataStorage = new Mock <IDataStorageService <Domain.Models.Printer> >();
var mockMapper = new Mock <IMapper>();
var sut = new GetPrinterByIdQueryHandler(
mockDataStorage.Object,
mockMapper.Object);
var query = new GetPrinterByIdQuery
{
Id = Guid.NewGuid().ToString()
};
mockDataStorage.Setup(x => x.Get(
It.IsAny <string>(),
It.IsAny <CancellationToken>()))
.ReturnsAsync(new Domain.Models.Printer());
mockMapper.Setup(x => x.Map <Dto.Response.Printer>(
It.IsAny <object>()))
.Returns(new Dto.Response.Printer
{
Name = "Bob Hoskins"
});
// Act
var result = await sut.Handle(
query,
CancellationToken.None);
// Assert
mockDataStorage.Verify(x => x.Get(
It.Is <string>(y => y == query.Id),
It.IsAny <CancellationToken>()), Times.Once);
Assert.Null(result.Error);
Assert.Equal("Bob Hoskins", result.Printer.Name);
}