Open Maven project in LightPlatformCodeInsightFixtureTestCase

Hello,

I'm trying to make a test for my plugin. My plugin works with Maven pom.xml dependencies. As I understand for test plugin functionality I need to open or import the Maven project in the test case. 

I tried 

MavenProjectsTree.read(myProject, Paths.get("pom.xml"))

but no success.

Also, I tried something like

val myProjectsManager = MavenProjectsManager.getInstance(myProject)

val virtualFile = LocalFileSystem.getInstance().findFileByIoFile(new File("pom.xml"))

val files = util.Arrays.asList(virtualFile)

myProjectsManager.addManagedFiles(files)

Maybe someone can help me with this issue. In any case, thank you!

Best regards,

Alex.