如何通过一次测试来测试我的方法异常集？

Question

NUnit的3，VS2015
我想用通过TestCase属性测试异常类型我的方法，但NUnit3TestAdapter没有看到我在VS2015的测试（我的课是public）：

[TestCase(null, typeof(ArgumentNullException))] 
[TestCase("", typeof(ArgumentException))] 
[TestCase(" ", typeof(ArgumentException))] 
[TestCase(" \t \t ", typeof(ArgumentException))] 
[TestCase("< !!!>", typeof(FileNotFoundException))] 
public void InvalidFilePath_ThrowsException<T>(string name, 
    T exception_type) where T : Exception { 

    Dictionary<string, string> dict = new Dictionary<string, string>(); 

    Assert.Throws<T>(() => ModelFactory.Current.CreateDocument(name, 
     dict)); 
} 

更：在这种情况下NUnit3TestAdapter没有看到我所有的测试......但如果我评论这个测试，然后NUnit3TestAdapter看到其他检查：

// [TestCase(null, typeof(ArgumentNullException))] 
// [TestCase("", typeof(ArgumentException))] 
// [TestCase(" ", typeof(ArgumentException))] 
// [TestCase(" \t \t ", typeof(ArgumentException))] 
// [TestCase("<!!!>", typeof(FileNotFoundException))] 
// public void InvalidFilePath_ThrowsException<T>(string name, 
// T exception_type) where T : Exception { 

// Dictionary<string, string> dict = new Dictionary<string, string>(); 

// Assert.Throws<T>(() => ModelFactory.Current.CreateDocument(name, 
//  dict)); 
//} 

[Test] 
public void InvalidFilePath_ThrowsException_01() { 

    Dictionary<string, string> dict = new Dictionary<string, string>(); 

    Assert.Throws<ArgumentNullException>(() => ModelFactory.Current 
    .CreateDocument(null, dict)); 
} 

[Test] 
public void InvalidFilePath_ThrowsException_02() { 

    Dictionary<string, string> dict = new Dictionary<string, string>(); 

    Assert.Throws<ArgumentException>(() => ModelFactory.Current 
    .CreateDocument("", dict)); 
} 

[Test] 
public void InvalidFilePath_ThrowsException_03() { 

    Dictionary<string, string> dict = new Dictionary<string, string>(); 

    Assert.Throws<ArgumentException>(() => ModelFactory.Current 
    .CreateDocument(" ", dict)); 
} 

[Test] 
public void InvalidFilePath_ThrowsException_04() { 

    Dictionary<string, string> dict = new Dictionary<string, string>(); 

    Assert.Throws<ArgumentException>(() => ModelFactory.Current 
    .CreateDocument(" \t \t ", dict)); 
} 

[Test] 
public void InvalidFilePath_ThrowsException_05() { 

    Dictionary<string, string> dict = new Dictionary<string, string>(); 

    Assert.Throws<FileNotFoundException>(() => ModelFactory.Current 
    .CreateDocument("<!!!>", dict)); 
} 

我怎样才能解决呢？我不想创建五个单独的测试...

Answer 1

我怀疑问题是测试方法是通用的。而不是使用通用Assert.Throws<T>的，使用接受的异常类型的过载：

[TestCase(null, typeof(ArgumentNullException))] 
[TestCase("", typeof(ArgumentException))] 
[TestCase(" ", typeof(ArgumentException))] 
[TestCase(" \t \t ", typeof(ArgumentException))] 
[TestCase("< !!!>", typeof(FileNotFoundException))] 
public void InvalidFilePath_ThrowsException(string name, Type exceptionType) 
{ 
    Dictionary<string, string> dict = new Dictionary<string, string>();  
    Assert.Throws(exceptionType,() => ModelFactory.Current.CreateDocument(name, dict)); 
}