Nova Ordis Utilities OS Support

Internal

• Novaordis-utilities#Subjects

Testing with a Mock OS

The OS.getInstance() factory method looks up the "os.class" system property before it looks up "os.name". If "os.class" is set up, the implementation will interpret the value as a fully qualified io.novaordis.utilities.os.OS implementation class name, try to instantiate it and return it if successful. An instantiation failure will throw an exception (ClassNotFoundException or other).

In order to mock an OS, provide an OS implementation in your class path and then set "os.class", with a code possibly similar to:

@Before
public void before() throws Exception {

    System.setProperty("os.class", ....);
}

@After
public void after() throws Exception {

    System.clearProperty("os.class");
}