assertEquals(4, flow.getWidthOfLastLine());
assertEquals(1, flow.getHeight());
flow.appendBreak();
assertEquals(4, flow.getWidthOfLastLine());
assertEquals(1, flow.getHeight());
flow.changeIndentation(1);
flow.appendBreak();
flow.appendText("3");
flow.appendText("45");
assertEquals(5, flow.getWidthOfLastLine());
}