Added integration test

src/IF.Lastfm.Core.Tests.Integration/Commands/UserGetWeeklyTrackChartTests.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using NUnit.Framework;
+
+namespace IF.Lastfm.Core.Tests.Integration.Commands
+{
+    public class UserGetWeeklyTrackChartTests : CommandIntegrationTestsBase
+    {
+
+        [Test]
+        public async Task GetTrackChart_Success()
+        {
+            //call GetWeeklyChartList to get available weeks
+            var weekList = await Lastfm.User.GetWeeklyChartListAsync(INTEGRATION_TEST_USER);
+            var fromLastWeek = weekList.Content.Last().From;
+            var toLastWeek = weekList.Content.Last().To;
+            var fromPrevWeek = weekList.Content[weekList.Content.Count - 2].From;
+            var toPrevWeek = weekList.Content[weekList.Content.Count - 2].To;
+
+            //use the from and to params to call GetWeeklyArtistChart for the last week
+            var response = await Lastfm.User.GetWeeklyTrackChartAsync(INTEGRATION_TEST_USER, fromLastWeek, toLastWeek);
+            var trackChart = response.Content;
+            //get weekly chart for the week before
+            var responsePrev = await Lastfm.User.GetWeeklyTrackChartAsync(INTEGRATION_TEST_USER, fromPrevWeek, toPrevWeek);
+            var trackChartPrev = responsePrev.Content;
+            
+            Assert.IsTrue(response.Success);
+            
+            //Values will vary from week to week so just checking that we got some values back
+            Assert.IsNotEmpty(trackChart);
+            Assert.IsNotEmpty(trackChart.First().Name);
+            Assert.IsNotEmpty(trackChart.First().ArtistName);
+            Assert.IsNotNull(response.From);
+            Assert.IsNotNull(response.To);
+            
+            //check that the two different weekly charts are not the same
+            Assert.IsFalse(trackChart.First().Name == trackChartPrev.First().Name);
+        }
+    }
+}