frameFixture.show();
view.setPuzzle(TEST_PUZZLE);
// Check a non-empty cell.
JTableCellFixture cell1 = frameFixture.table().cell(TableCell.row(0).column(0));
cell1.requireEditable();
cell1.requireValue("4");
// And an empty cell.
JTableCellFixture cell2 = frameFixture.table().cell(TableCell.row(0).column(1));
cell2.requireEditable();