如何在 nunit 测试用例中使用 Author 属性

Question

I want to access Nunit Author attribute and fetch author value in setup method. Please let me know the correct way of doing it.

Below is the way i tried accessing "Author" attribute,but getting null value in return. It is giving me exception Object reference not set to instance of object.

[TestFixture]
    public class EPTestFlow : MerlinBase
    {

        [Test]
        [Property(PropertyNames.Author,"Kalyani")]
        [TestCaseSource(typeof(TestDataMerlin), "LoginDetails", new object[] { new string[] { "TC01"} })]
        public void PatientEnrollment(string userDetails, LoginDetails loginDetails)
        {

        }
     }

        [SetUp]
        public void TestInitialize()
        {
           var testAuthor = TestContext.CurrentContext.Test.Properties[PropertyNames.Author];
            string name = testAuthor.ToString();
        }

Updated with suggested approach:

        [Test]
        [Author("Kalyani")]
        [TestCaseSource(typeof(TestDataMerlin), "LoginDetails", new object[] { new string[] { "TC01"} })]
        public void PatientEnrollment(string userDetails, LoginDetails loginDetails)
        {
        }

[TearDown]
        public void TestCleanup()
        {
            //IList testAuthor = (IList)TestContext.CurrentContext.Test.Properties["Author"];
            //foreach (string author in testAuthor)
            //{
            //    string name12 = author.ToString();
            //}
            //string name = testAuthor.ToString();

            var category = (string)TestContext.CurrentContext.Test.Properties.Get("Author");
}

Answer 1

You are getting null value for 'PropertyNames.Author' because you are trying to access the Author property before setting it.

Since SetUp is executed before each Test method the value of Author is null in SetUp method. You can get the Author value in the 'TearDown' method and use it in the logs(Assuming you are trying to use the author value for some logging).

You can read more about the Nunit attributes here

Try setting author attribute like below in Test method

 [Test]
 [Author("Author_Name")]
 public void TestTest() { /* ... */ }
}

and retrieve using below in TearDown method

var category = (string) TestContext.CurrentContext.Test.Properties.Get("Author");

If you are using TestCaseSource attribute then use the below to set the Author property in Test method

        [Test]        
        [TestCaseSource(typeof(TestDataMerlin), "LoginDetails", new object[] { new string[] { "TC01"} })]
        public void PatientEnrollment(string userDetails, LoginDetails loginDetails)
        {                      
        TestExecutionContext.CurrentContext.CurrentTest.Properties.Add("Author", "Author_Name");
        }

        [TearDown]
        public void TestCleanup()
        {
            string name = TestExecutionContext.CurrentContext.CurrentTest.Properties.Get("Author").ToString();
        }