我想知道我怎么能嘲笑的索引属性的选择,且有这么多的问题:模拟只读索引器属性
- Moq an indexed property and use the index value in the return/callback
- How to MOQ an Indexed property
- How to Moq Setting an Indexed property
等。但在我的情况下,增加了复杂性。索引属性是只读的。所以,我需要能够测试一段代码,做以下
if (workbook.Worksheets.Cast<IWorksheet>().Any(
ws => ws.Name.CompareNoCase(Keywords.Master)))
{
...
}
,我们有下面的类结构
public interface IWorkbook
{
IWorksheets Worksheets { get; }
}
public interface IWorksheets : IEnumerable
{
IWorksheet this[int index] { get; }
IWorksheet this[string name] { get; }
int Count { get; }
IWorksheet Add();
IWorksheet AddAfter(IWorksheet sheet);
IWorksheet AddBefore(IWorksheet sheet);
bool Contains(IWorksheet worksheet);
}
public interface IWorksheet
{
string Name { get; set; }
}
所以在我的测试方法,我试图(和失败)通过覆盖GetEnumerator()
方法来做到这一点,因为这正是Cast()
所调用的;我这样做如下:
List<string> fakeSheetNames = new List<string>()
{
"Master", "A", "B", "C", "__ParentA", "D", "wsgParentB", "E", "F","__ParentC", "__ParentD", "G"
};
List<IWorksheet> worksheetMockList = new List<IWorksheet>();
foreach (string name in fakeSheetNames)
{
Mock<IWorksheet> tmpMock = new Mock<IWorksheet>();
tmpMock.Setup(p => p.Name).Returns(name);
tmpMock.Setup(p => p.Visible)
.Returns(parentPrefixes.Any(p => name.StartsWith(p)) ?
SheetVisibility.Hidden :
SheetVisibility.Visible);
worksheetMockList.Add(tmpMock.Object);
}
Mock<IWorkbook> mockWorkbook = new Mock<IWorkbook>();
mockWorkbook
.Setup(p => p.Worksheets.GetEnumerator())
.Returns(worksheetMockList.GetEnumerator());
// I can't do this as per the threads referenced above, as the property is read only.
//for (int i = 0; i < worksheetMockList.Count; ++i)
//mockWorkbook.SetupGet(p => p.Worksheets[i] = worksheetMockList[i])...
我怎么能嘲笑我workbook.Worksheets
只读iterator属性?
我还有一个抽象层次。我需要将IWorkbook
添加到IWorkbooks
集合(就像我们为IWorksheets
所做的那样)。我没有把这个问题放在原来的问题中,因为它只是做和IWorksheets
一样的事情,但它怎么都行不通。这些接口
public interface IWorkbookSet
{
...
IWorkbooks Workbooks { get; }
}
和
public interface IWorkbooks : IEnumerable
{
IWorkbook this[int index] { get; }
IWorkbook this[string name] { get; }
int Count { get; }
...
}
所以试图解决这个我按照下面的巨大嘲讽答案在下面的流行时尚。但是,下面的循环不能按预期工作。
List<string> fakeSheetNames = new List<string>()
{
"Master",
"A",
"B",
"C",
"__ParentA",
"D",
"wsgParentB",
"E",
"F",
"__ParentC",
"__ParentD",
"G"
};
Mock<IWorkbook> mockWorkbook = new Mock<IWorkbook>();
List<IWorksheet> worksheetMockList = new List<IWorksheet>();
foreach (string name in fakeSheetNames)
{
Mock<IWorksheet> tmpWorksheetMock = new Mock<IWorksheet>();
tmpWorksheetMock.Setup(p => p.Name).Returns(name);
tmpWorksheetMock.Setup(p => p.Visible)
.Returns(parentPrefixes.Any(p => name.StartsWith(p)) ?
SheetVisibility.Hidden :
SheetVisibility.Visible);
worksheetMockList.Add(tmpWorksheetMock.Object);
}
var mockWorksheets = new Mock<IWorksheets>();
mockWorksheets.Setup(m => m[It.IsAny<int>()]).Returns<int>(index => worksheetMockList[index]);
mockWorksheets.Setup(m => m.GetEnumerator()).Returns(worksheetMockList.GetEnumerator());
mockWorkbook
.Setup(p => p.Worksheets)
.Returns(mockWorksheets.Object);
mockWorkbook.Setup(p => p.Name).Returns("Name");
mockWorkbook.Setup(p => p.FullName).Returns("FullName");
// This works.
foreach (IWorksheet ws in mockWorkbook.Object.Worksheets)
Trace.WriteLine(ws.Name);
mockWorkbookSet = new Mock<IWorkbookSet>();
var mockWorkbooks = new Mock<IWorkbooks>();
List<IWorkbook> workbookMockList = new List<IWorkbook>() { mockWorkbook.Object };
mockWorkbooks.Setup(m => m[It.IsAny<int>()]).Returns<int>(index => workbookMockList[index]);
mockWorkbooks.Setup(m => m.GetEnumerator()).Returns(workbookMockList.GetEnumerator());
mockWorkbookSet
.Setup(p => p.Workbooks)
.Returns(mockWorkbooks.Object);
// Count is zero here??
foreach (IWorkbook wb in mockWorkbookSet.Object.Workbooks)
Trace.WriteLine(wb.Worksheets.Count);
非常感谢。
编辑#2:使用你的代码,我有一些有趣的现象...
// Setup test.
var workbookSet = mockWorkbookSet.Object;
var actual = workbookSet
.Workbooks[expectedWorkBooksIndex]
.Worksheets[expectedWorkSheetIndex];
// This prints "A" - GOOD!
Trace.WriteLine("Actual " + actual.Name);
// This passes.
Assert.AreEqual(expected, actual);
// This works.
foreach (IWorksheet ws in mockWorkbook.Object.Worksheets)
Trace.WriteLine(ws.Name);
// This works.
Trace.WriteLine(mockWorkbookSet.Object.Workbooks[0].Name);
// This does not write anything - WHY?
foreach (IWorksheet ws in mockWorkbookSet.Object.Workbooks[0].Worksheets.Cast<IWorksheet>())
Trace.WriteLine(ws.Name);
// This fails.
foreach (IWorkbook workbook in workbookSet.Workbooks.Cast<IWorkbook>())
Assert.IsTrue(workbook.Worksheets.Count > 0);
非常感谢您的帮助在这里,但我仍然有这个问题。你可以检查编辑?我会在适当的时候奖励你的帮助...... – MoonKnight
@Killercam,你在不同的问题中传播了同样的问题。我询问了其他问题的一些信息,以帮助澄清问题,以便我可以重现您的问题并提供完整的解决方案,但是除非我刚刚展示了如何解决您询问的具体问题的示例。然后你可以将这些反应拼凑起来解决你的整体问题 – Nkosi
对不起。我以一种不够简洁的方式,通过另一个线索来了解我所问的问题。我没有真正掌握(只读索引器属性)的问题。我没有这样做,因为其他任何明显的原因。无论如何,我领先于我自己;编辑不可用。再次感谢您的所有时间,这是非常感谢。 – MoonKnight