customerFilterField.setText("first:e");
customerFilterField.postActionEvent();
assertEquals(Arrays.asList(new Customer[] {jesse, james, holger, kevin}), filteredCustomers);
customerFilterField.setText("first:e last:B");
customerFilterField.postActionEvent();
assertEquals(Arrays.asList(new Customer[] {holger, kevin}), filteredCustomers);
customerFilterField.setText("first:e last:-B");
customerFilterField.postActionEvent();
assertEquals(Arrays.asList(new Customer[] {jesse, james}), filteredCustomers);