XUnit.net：并行运行理论

Question

xunit.net supports parallel test execution.

My tests are parameterized (theories). Every test I run against different storage. Here's an example:

public class TestCase1
{
    [Theory]
    [InlineData("mssql")]
    [InlineData("oracle")]
    [InlineData("pgsql")]
    [InlineData("sqlite")]
    public void DoTests(string storage) {}
}
public class TestCase2
{
    [Theory]
    [InlineData("mssql")]
    [InlineData("oracle")]
    [InlineData("pgsql")]
    [InlineData("sqlite")]
    public void DoTests(string storage) {}
}

By default all tests are executed in parallel . By they can be grouped in Collections (with help of Collection attribute).

I can't run all tests in parallel as every test case has it own db schema. So I put all tests into a single collection with assembly-level attribute:

[assembly: CollectionBehavior(CollectionBehavior.CollectionPerAssembly)]

But it also means that tests for differnt storages are also run serially.

What I want is to run tests for different storages in parallel but for single storage in serial:

=> TestCase1.DoTest("mssql") => TestCase2.DoTest("mssql")
=> TestCase1.DoTest("oracle") => TestCase2.DoTest("oracle")
and so on

Is it possible in xunit.net?

UPDATE: (put it here as SO doesn't support code in comments). As @BradWilson suggested, it's possible to split tests with derived classes:

public class TestCase1
{
    public void DoTests(string storage) {}
}
public class TestCase1_MSSQL
{
    [Fact]
    public void DoTests(string storage) 
    {
        DoTests("mssql");
    }
}
public class TestCase1_Oracle
{
    [Fact]
    public void DoTests(string storage) 
    {
        DoTests("oracle");
    }
}

Answer 1

I wouldn't do this with theories and inline data; instead, I would do it with an abstract base class and concrete test classes for each storage method. That gets you the grouping you want.