public async Task LoadApartmentsHtml()
{
// Arrange
var expectedResult = new HtmlNodeCollection(null)
{
HtmlNode.CreateNode(_htmlDummyNodeLiteral),
HtmlNode.CreateNode(_htmlDummyNodeLiteral)
};
var loadHtmlNodesTask = Task.Run(() => expectedResult);
var htmlParser = new Mock <HtmlParser>(new HtmlWeb());
htmlParser
.Setup(htmlParser => htmlParser.LoadHtmlNodes(_dummyUrl, _apartmentXPath))
.Returns(loadHtmlNodesTask);
var pageHandler = new PageHandler(htmlParser.Object);
// Act
var actualResult = await pageHandler.LoadApartmentsHtml(_dummyUrl);
// Assert
Assert.Equal(expectedResult, actualResult);
}