如何测试更新发布内容的控制器

Question

这看起来很简单，但我似乎无法让它发挥作用。我想对控制器的分配操作进行单元测试。它需要一个IEnumerable（Of Integer），它表示要分配的所有对象的ID。

这是我写的代码，Do语句出现错误（我从Ayende的博客中复制了代码http://ayende.com/blog/3397/rhino-mocks-3-5-a-feature-to-be-proud-of-seamless-do)。

    <Test()> _
    Public Sub Assign_Post_Should_Assign_All_Audits_Provided()
        Dim auditsToAssign As IEnumerable(Of HvacAudit) = HvacAuditsGenerator.GenerateAudits() _
                                                                .Unassigned()
        Dim auditIDs As IEnumerable(Of Integer) = auditsToAssign.Select(Function(audit, index) audit.HvacAuditID)
        Dim hvacAuditRepo As IHvacAuditRepository = MockRepository.GenerateMock(Of IHvacAuditRepository)()
        hvacAuditRepo.Stub(Sub(repo) repo.GetAuditByID(1)) _
            .Do(Function(invocation) invocation.ReturnValue = auditsToAssign.Single(Function(audit) audit.HvacAuditID = invocation.Arguments(0)))
        Dim controller As New HvacAuditController(hvacAuditRepo)
        Dim r As ViewResult = controller.Assign(auditIDs).AssertViewRendered()
        r.AssertAssignedAuditCount(auditsToAssign.Count)
        auditsToAssign.AssertAreAssigned()
        hvacAuditRepo.AssertWasCalled(Sub(h) h.SaveChanges())
    End Sub

Answer 1

我通过更改代码以使用函数lambda而不是子lambda并直接返回值来解决这个问题。我不确定Ayende的博客指的是什么。

<Test()> _
Public Sub Assign_Post_Should_Assign_All_Audits_Provided()
    Dim auditsToAssign As IEnumerable(Of HvacAudit) = HvacAuditsGenerator.GenerateAudits() _
                                                            .Unassigned()
    Dim auditIDs As IEnumerable(Of Integer) = auditsToAssign.Select(Function(audit, index) audit.HvacAuditID)
    Dim hvacAuditRepo As IHvacAuditRepository = MockRepository.GenerateMock(Of IHvacAuditRepository)()
    hvacAuditRepo.Stub(Sub(repo) repo.GetAuditByID(1)) _
        .Do(Function(auditID as Integer) Return auditsToAssign.Single(Function(audit) audit.HvacAuditID = auditID))
    Dim controller As New HvacAuditController(hvacAuditRepo)
    Dim r As ViewResult = controller.Assign(auditIDs).AssertViewRendered()
    r.AssertAssignedAuditCount(auditsToAssign.Count)
    auditsToAssign.AssertAreAssigned()
    hvacAuditRepo.AssertWasCalled(Sub(h) h.SaveChanges())
End Sub