private final ProjectSelector sut = new ProjectSelector();
    private final MavenExecutionRequest mavenExecutionRequest = mock(MavenExecutionRequest.class);

    @Test
    void getBaseDirectoryFromRequestWhenDirectoryIsNullReturnNull() {
        when(mavenExecutionRequest.getBaseDirectory()).thenReturn(null);

        final File baseDirectoryFromRequest = sut.getBaseDirectoryFromRequest(mavenExecutionRequest);