XUnit 中的理论测试异常

Question

我使用 XUnit 进行以下单元测试：

[Theory]
[InlineData(1, 2, 3)]
[InlineData(-2, 2, 0)]
[InlineData(int.MinValue, -1, int.MaxValue)]
public void CanAddTheory(int value1, int value2, int expected) {
  var calculator = new Calculator();
  var result = calculator.Add(value1, value2);
  Assert.Equal(expected, result);
}

public class Calculator {
  public int Add(int value1, int value2) {

    if (value1 == value2) 
      throw new ArgumentOutOfRangeException();

    return value1 + value2;

  }
}

是否可以使用理论并测试方法是否返回异常？

在此示例中，如果出现以下情况，则会返回异常value1 == value2：

[InlineData(2, 2, Exception???)]

Answer 1

http://dontcodetired.com/blog/post/Testing-for-Thrown-Exceptions-in-xUnitnet

[Theory]
[InlineData(1, 2, 3)]
[InlineData(-2, 2, 0)]
[InlineData(int.MinValue, -1, int.MaxValue)]
public void Calculator_CanAddValidValues(int value1, int value2, int expected) {
  var calculator = new Calculator();
  var result = calculator.Add(value1, value2);
  Assert.Equal(expected, result);
}

[Theory]
[InlineData(1, 1)]
[InlineData(2, 2)]
[InlineData(89, 89)]
public void Calculator_InValidValuesThrowArgumentOutOfRangeException(int value1, int value2) {
  var calculator = new Calculator();
  Assert.Throws<ArgumentOutOfRangeException>(() => calculator.Add(value1, value2);
}

public class Calculator {
  public int Add(int value1, int value2) {

    if (value1 == value2) 
      throw new ArgumentOutOfRangeException();

    return value1 + value2;

  }
}

Answer 2

我得到它像这样工作..

[Theory]
[InlineData("", typeof(ArgumentException),"invalid name")]
[InlineData(null, typeof(ArgumentNullException), "name cannot be null")]
public void some_test(string name, Type exceptionType, string message){
  
  var project = new Project();
  
  try {
   project.updateName(name);
  } 
  catch (Exception e){
      Assert.True(e.GetType() == exceptionType);
      Assert.Equal(e.Message,message);
  }

}