具有受保护构造函数和工厂方法的对象列表的自动fixture

Question

public partial class TestObjectCode
{
    /// <summary>
    /// We don't make constructor public and forcing to create object using
    /// <see cref="Create"/> method.
    /// But constructor can not be private since it's used by EntityFramework.
    /// Thats why we did it protected.
    /// </summary>
    protected TestObjectCode() {}
    public static  TestObjectCode Create(
                    DateTime executiontime,
                    Int32 conditionid,
                    String conditionname)
    {
        var @objectToReturn = new TestObjectCode
        {
            ExecutionTime = executiontime,
            ConditionId = conditionid,
            ConditionName = conditionname
        };
        return @objectToReturn;
    }
    public virtual Int32 ConditionId { get; set; }
    public virtual String ConditionName { get; set; }
    public virtual DateTime ExecutionTime { get; set; }
}

测试:

[Test]
[TestCase("1/1/2015", "07/5/2016")]
public void Task Should_Filter_By_Date_Range_Only(string startDate, string endDate)
{
    //Arrange
    var startDateTime = DateTime.Parse(startDate);
    var endDateTime = DateTime.Parse(endDate);
    //get randomDate between two Dates
    TimeSpan timeSpan = endDateTime - startDateTime;
    var randomTest = new Random();
    TimeSpan newSpan = new TimeSpan(0, randomTest.Next(0, (int)timeSpan.TotalMinutes), 0);
    DateTime newDate = startDateTime + newSpan;
    var list = new List<TestObjectCode>();
    _fixture.AddManyTo(list);
    _fixture.Customize<TestObjectCode>(
        c => c
        .With(x => x.ExecutionTime, newDate)
        .With(x => x.ConditionId, 1)
        );
    _fixture.RepeatCount = 7;
    _fixture.AddManyTo(list);
}

以上测试由于_fixture而失败。定制和我的演员正在进行中。如果我把它公开，它就会起作用，但我想让它受到保护。这个类还有15个属性，我没有在这里列出。我还想在两个dateRanges之间为每个项目的列表随机日期。

如何调用工厂的Create方法?我需要为每个属性定义autoFixure吗?

Ploeh.AutoFixture。修饰的ISpecimenBuilder无法根据请求创建样本:EMR.Entities.AbpAuditLogs。如果请求表示接口或抽象类，则可能发生这种情况;如果是这种情况，注册一个ISpecimenBuilder，它可以根据请求创建样本。如果这种情况发生在强类型构建表达式中，请尝试使用IFactoryComposer方法之一来提供工厂。

Answer 1

您可以通过将.FromFactory(new MethodInvoker(new FactoryMethodQuery()))添加到您的自定义中来使上述测试通过:

fixture.Customize<TestObjectCode>(
    c => c
    .FromFactory(new MethodInvoker(new FactoryMethodQuery()))
    .With(x => x.ExecutionTime, newDate)
    .With(x => x.ConditionId, 1));

这两个类都是在Ploeh.AutoFixture.Kernel命名空间中定义的。

尽管如此，你还是应该重新考虑一下你的整体方法。