MainWindowPresenterTest.java

    @Test
    public void handleLoadFileTest()
        throws IOException, SQLException
    {
        final Path path = mock(Path.class);
        final CsvTraceModel model = mock(CsvTraceModel.class);
        final CsvTracePresenter tracePresenter
            = mock(CsvTracePresenter.class);

        when(view.chooseFile()).thenReturn(path);
        doReturn(model).when(presenter).getModel(same(path));
        doReturn(tracePresenter).when(presenter)
            .createTabPresenter(same(model));

        presenter.handleLoadFile();

        verify(view).attachTrace(tracePresenter);
        verify(tracePresenter).load();

        assertThat(presenter.tracePresenter).isSameAs(tracePresenter);
    }