错误消息为：Assert.AreEqual失败。预期：<1>。实际：<0>

Question

我收到以下错误消息：

  

Assert.AreEqual失败。预期：<1>。实际：<0>

和相关代码在下面； 谁能告诉我问题出在哪里，我该如何解决？

[TestMethod]
[TestProperty("TestCaseId", "637683")]
public void DiscoveryFunctionalTests_BucketedPivotTests_TVShowOnly_ItemsPerRowBasicScenario_NoError()
{
    var pivotConstraints = new List<string> { "ShowType|TVShow" };
    var items = this.clientContext.DiscoveryClient.GetBucketedPivotItems(pivotConstraints, groups: discoveryGroups, itemsPerRow: 1).ToList();

    Assert.IsNotNull(items.FirstOrDefault(), "No pivot items were returned");
    foreach (var item in items)
    {
        //error is here  Assert.AreEqual(1, item.Items.Count());
        Assert.IsTrue(
            item.Items.All(
                queryItem =>
                    ((queryItem.ItemType == QueryItemType.Series) ||
                    ((queryItem.ItemType == QueryItemType.Program) && (this.clientContext.DiscoveryClient.GetProgramById(queryItem.Id).ShowType == ShowType.TVShow)))));
    }
}