public async Task return_null_when_not_found_document()
{
//Arrange
_documentRepository.Setup(r => r.GetDocumentByExternalIdAsync(_query)).Returns(Task.FromResult((Document)null));
//Act
var handler = new GetDocumentByExternalIdHandler(_documentRepository.Object, _logger.Object);
var result = await handler.HandleAsync(_query);
//Assert
Assert.Null(result);
}
public async Task return_expected_result()
{
//Arrange
var document = new Document(_guid, null, null, _guid);
_documentRepository.Setup(r => r.GetDocumentByExternalIdAsync(_query)).ReturnsAsync(document);
//Act
var handler = new GetDocumentByExternalIdHandler(_documentRepository.Object, _logger.Object);
var result = await handler.HandleAsync(_query);
//Assert
Assert.NotNull(result);
Assert.Equal(document.Id, result.Id);
Assert.Equal(document.ExternalId, result.ExternalId);
}