如何解決此Moq錯誤？ System.Reflection.TargetParameterCountException：參數計數不匹配

Question

我在我的nUnit測試用例中使用了Moq。

這裏是我的測試情況是這樣的：

 IList<ChartFieldDepartment> coaDepartments = new List<ChartFieldDepartment>() { 
       new ChartFieldDepartment { ChartFieldKey="1000", Description="Corporate Allocation"}, 
       new ChartFieldDepartment { ChartFieldKey="1010", Description="Contribution to Capital"} 
     }; 

     Mock<IChartFieldRepository> mockChartFieldRepository = new Mock<IChartFieldRepository>(); 
     mockChartFieldRepository.Setup(x => x.RetrieveChartFieldDepartments(It.IsAny<bool>())).Returns(coaDepartments.AsQueryable); 

     ChartFieldDomainService chartFieldDomainService = new ChartFieldDomainService(mockChartFieldRepository.Object); 

     // this line fails! I get System.Reflection.TargetParameterCountException : Parameter count mismatch 
     IQueryable<ChartFieldDepartment> departments = chartFieldDomainService.RetrieveChartFieldDepartments(); 

這裏是我的ChartFieldDomainService：

public class ChartFieldDomainService : IChartFieldDomainService 
{ 
    private IChartFieldRepository _chartFieldRepository = null; 

    public ChartFieldDomainService(IChartFieldRepository repository) 
    { 
     _chartFieldRepository = repository; 
    } 

    public virtual IQueryable<ChartFieldDepartment> RetrieveChartFieldDepartments() 
    { 
     return _chartFieldRepository.RetrieveChartFieldDepartments(true); // always refresh, get latest 
    } 
    //.... 
} 

在此先感謝您的幫助。

編輯：解決方案

以下句法更改修復了問題。

原線路：

 mockChartFieldRepository.Setup(x => x.RetrieveChartFieldDepartments(It.IsAny<bool>())) 
      .Returns(coaDepartments.AsQueryable()); 

更新線路：

 mockChartFieldRepository.Setup(x => x.RetrieveChartFieldDepartments(It.IsAny<bool>())) 
      .Returns((bool x) => coaDepartments.AsQueryable()); 

Answer 1

將其更改爲

.Returns(coaDepartments.AsQueryable());