Ignore Test or TestFixture based on condition

Question

Use some code in your test or fixture set up method that detects if the simulation software is installed or not and calls Assert.Ignore() if it isn't.

[SetUp]
public void TestSetUp() 
{
     if (!TestHelper.SimulationFilesExist())
     {
         Assert.Ignore( "Simulation files are not installed.  Omitting." );
     }
}

or

[TestFixtureSetUp]
public void FixtureSetUp()
{
     if (!TestHelper.SimulationFilesExist())
     {
         Assert.Ignore( "Simulation files are not installed.  Omitting fixture." );
     }
}

In NUnit 3.0 and higher you have to use OneTimeSetUp attribute instead of TestFixtureSetUp.

NUnit also gives you the option to supply a Category attribute. Depending on how you are launching your tests, it may be appropriate to flag all the tests that require the simulator with a known category (e.g. [Category("RequiresSimulationSoftware")]). Then from the NUnit Gui you can choose to exclude certain categories. You can do the same thing from the NUnit command line runner (specify /exclude:RequiresSimulationSoftware if applicable).

Hope this (or the previous answer by tvanfosson) helps.

[SetUp]
public void TestSetUp() 
{
     if (!TestHelper.SimulationFilesExist())
     {
         Assert.Ignore( "Simulation files are not installed.  Omitting." );
     }
}

you use this type of condition in TestFixtureSet Attribute. But if this fixture have parametreized test then if you want to ignore parameterized test of this fixture then this goes in infinite loop and your test will be hanged. So you use setup attribute better for if condition.