Add assertion for the collection test

test/Discord.Net.Tests/Tests.TypeReaders.cs

@@ -101,6 +101,10 @@ namespace Discord
 
             var result = await param.ParseAsync(null, "manyints: \"1, 2, 3, 4, 5, 6, 7\"");
             Assert.True(result.IsSuccess);
+
+            var m = result.BestMatch as ArgumentType;
+            Assert.NotNull(m);
+            Assert.Equal(expected: new int[] { 1, 2, 3, 4, 5, 6, 7 }, actual: m.ManyInts);
         }
     }