public async Task ReturnEmptyList()
{
// Arrange
var authorDbSetMock = Builder <Author> .CreateListOfSize(3).Build().ToAsyncDbSetMock();
_authorRepositoryMock.Setup(m => m.Query()).Returns(authorDbSetMock.Object);
// Act
var result = await _authorController.Search("Invalid");
// Assert
Assert.NotNull(result);
var objectResult = result as OkObjectResult;
Assert.NotNull(objectResult);
var content = objectResult.Value as AuthorListModel;
Assert.NotNull(content);
Assert.Equal(0, content.Authors.Count());
}