为什么 Assets 在 Unit Android Test Runner 中等于 0（零）？

Question

如标题所述，为什么在我的NUnit Android Test Runner中显示Asserts: 0，尽管在相应的测试方法中调用了两个Assert？只是好奇我是否以错误的方式进行断言，或者显示的信息可能与我认为的完全不同。

测试方法如下。两条 Assert 行上的断点按预期命中。

[Test]
public async Task TestDeleteHistoryShouldEmptyTable()
{
    var newBookmark = new Bookmark
    {
        Id = "foo",
        Page = 100,
        CreatedBy = "john doe",
        CreatedDate = DateTime.Now
    };
    await _mainVM.Repo.SaveAsync(newBookmark);
    var historyBefore = await _mainVM.Repo.GetLatestBookmarksAsync(Helpers.HistorySize);
    Assert.True(historyBefore.Any());

    await _mainVM.Repo.ClearTable("Bookmark");
    var historyAfter = await _mainVM.Repo.GetLatestBookmarksAsync(Helpers.HistorySize);
    Assert.True(!historyAfter.Any());
}

更新：

问题也可以使用以下测试方法重现：

[Test]
public async Task TestAsyncCounter()
{
    await FakeAsyncMethod();
    Assert.True(true);
}

public async Task FakeAsyncMethod()
{
    await Task.Delay(1000);
}

Answer 1

@CharliePoole, one of the NUnit maintainer in their issue tracker确认这是一个框架错误：

"OK, I have to take back that last comment. It works correctly when the awaited method doesn't contain an await itself and is therefore processed synchronously. I'm seeing odd results when I include await Task.Delay(1) in the awaited method. So there is definitely a framework bug and it can even be seen in .NET 4.5."

让我们暂时等待问题跟踪器中的更新。

已更新问题跟踪器 link：https://github.com/nunit/nunit/issues/1499

为什么 Assets 在 Unit Android Test Runner 中等于 0（零）？

Why Asserts equals 0 (zero) in NUnit Android Test Runner?

c#

xamarin.android

xamarin

nunit-3.0