public async Task LoadCityHtml_ReturnNodeCollection()
{
// Arrange
var expectedResult = new HtmlNodeCollection(null)
{
HtmlNode.CreateNode(_htmlDummyNodeLiteral),
HtmlNode.CreateNode(_htmlDummyNodeLiteral)
};
var LoadHtmlNodesTask = Task.Run(() => expectedResult);
const string cityXPath = "//*[@id='geo-control']/div[3]/div[2]/div/div[4]/a[*]";
var htmlParserMock = new Mock <HtmlParser>(new HtmlWeb());
htmlParserMock
.Setup(htmlParser => htmlParser.LoadHtmlNodes(_homePageUrl, cityXPath))
.Returns(LoadHtmlNodesTask);
var pageHandler = new PageHandler(htmlParserMock.Object);
// Act
var actualResult = await pageHandler.LoadCityHtml();
// Assert
Assert.Equal(expectedResult, actualResult);
}