[TestFixture]
    public class IgnoreTests
    {
        [Test, Ignore("This test is ignored on purpose")]
        public void IgnoreThisTest()
        {            
            // you will see this test reported as "skipped" in the test run results
        }

        [Test]
        public void IgnoreThisTestWithInconclusive()
        {
            // you will see this test reported as "not run" in the test run results
            Assert.Inconclusive("This test will not run.");
        }

        [Test, IgnoreOn64BitPlatform]
        public void IgnoreWithCustromAttribute()
        {
            // ignored with custom attribute
        }
    }

    /// <summary>
    /// NUnit 3 implements a great deal of its functionality in its Custom Attributes. This functionality is 
    /// accessed through a number of standard interfaces, which are implemented by the attributes. 
    /// Users may create their own attributes by implementing these interfaces.
    /// </summary>
    /// <remarks>Note: Action Attributes are a feature of NUnit V2, designed to better enable composability of test logic. 
    /// They are carried over to NUnit 3, but are not the recommended approach for most new work.</remarks>
    public sealed class IgnoreOn64BitPlatform : NUnitAttribute, IApplyToTest
    {
        public void ApplyToTest(Test test)
        {
            if (Environment.Is64BitOperatingSystem)
                test.RunState = RunState.Ignored;
        }
    }