@Test
 public void testOneHeadline() {
   // when
   AsciiArtTable aat = new AsciiArtTable();
   aat.addHeadline("Some test headline");
   aat.addHeaderCols("some", "foo");
   aat.addHeaderCols("bar");
   aat.add("bello", "pussy", "hans");
   aat.add(1, 2, 3., "a very long thing");
   // have a visual impression (not part of the test)
   aat.print(System.out);
   // then
   String expected = "";
   expected += "╔══════════════════════════════════╗" + System.lineSeparator();
   expected += "║ Some test headline               ║" + System.lineSeparator();
   expected += "╟───────────────────┬───────┬──────╢" + System.lineSeparator();
   expected += "║              some │   foo │  bar ║" + System.lineSeparator();
   expected += "╠═══════════════════╪═══════╪══════╣" + System.lineSeparator();
   expected += "║             bello │ pussy │ hans ║" + System.lineSeparator();
   expected += "╟───────────────────┼───────┼──────╢" + System.lineSeparator();
   expected += "║                 1 │     2 │  3.0 ║" + System.lineSeparator();
   expected += "╟───────────────────┼───────┼──────╢" + System.lineSeparator();
   expected += "║ a very long thing │       │      ║" + System.lineSeparator();
   expected += "╚═══════════════════╧═══════╧══════╝" + System.lineSeparator();
   assertEquals(expected, aat.getOutput());
 }
 @Test
 public void testOtherBorders() {
   // when
   AsciiArtTable aat = new AsciiArtTable();
   aat.addHeaderCols("some", "foo");
   aat.addHeaderCols("bar");
   aat.add("bello", "pussy", "hans");
   aat.add(1, 2, 3., "a very long thing");
   aat.setBorderCharacters("┏━┯┓┃┠─┬┨┿┣┫│┗┷┛┼");
   // have a visual impression (not part of the test)
   aat.print(System.out);
   // then
   String expected = "";
   expected += "┏━━━━━━━━━━━━━━━━━━━┯━━━━━━━┯━━━━━━┓" + System.lineSeparator();
   expected += "┃              some │   foo │  bar ┃" + System.lineSeparator();
   expected += "┣━━━━━━━━━━━━━━━━━━━┿━━━━━━━┿━━━━━━┫" + System.lineSeparator();
   expected += "┃             bello │ pussy │ hans ┃" + System.lineSeparator();
   expected += "┠───────────────────┼───────┼──────┨" + System.lineSeparator();
   expected += "┃                 1 │     2 │  3.0 ┃" + System.lineSeparator();
   expected += "┠───────────────────┼───────┼──────┨" + System.lineSeparator();
   expected += "┃ a very long thing │       │      ┃" + System.lineSeparator();
   expected += "┗━━━━━━━━━━━━━━━━━━━┷━━━━━━━┷━━━━━━┛" + System.lineSeparator();
   assertEquals(expected, aat.getOutput());
 }
 @Test
 public void testLineSeparationOnLongInputs() {
   // when
   AsciiArtTable aat = new AsciiArtTable();
   aat.addHeaderCols("some", "foo");
   aat.addHeaderCols("bar");
   aat.add(
       "a",
       "b",
       "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.");
   aat.add(1, "cdefg", 3., "Lorem ipsum dolor sit amet, consetetur sadipscing elitr");
   aat.setMaxColumnWidth(25);
   // have a visual impression (not part of the test)
   aat.print(System.out);
   // then
   String expected = "";
   expected +=
       "╔═══════════════════════════╤═══════╤═══════════════════════════╗"
           + System.lineSeparator();
   expected +=
       "║                      some │   foo │                       bar ║"
           + System.lineSeparator();
   expected +=
       "╠═══════════════════════════╪═══════╪═══════════════════════════╣"
           + System.lineSeparator();
   expected +=
       "║                         a │     b │ Lorem ipsum dolor sit     ║"
           + System.lineSeparator();
   expected +=
       "║                           │       │ amet, consetetur          ║"
           + System.lineSeparator();
   expected +=
       "║                           │       │ sadipscing elitr, sed     ║"
           + System.lineSeparator();
   expected +=
       "║                           │       │ diam nonumy eirmod tempor ║"
           + System.lineSeparator();
   expected +=
       "║                           │       │ invidunt ut labore et     ║"
           + System.lineSeparator();
   expected +=
       "║                           │       │ dolore magna aliquyam     ║"
           + System.lineSeparator();
   expected +=
       "║                           │       │ erat, sed diam voluptua.  ║"
           + System.lineSeparator();
   expected +=
       "╟───────────────────────────┼───────┼───────────────────────────╢"
           + System.lineSeparator();
   expected +=
       "║                         1 │ cdefg │                       3.0 ║"
           + System.lineSeparator();
   expected +=
       "╟───────────────────────────┼───────┼───────────────────────────╢"
           + System.lineSeparator();
   expected +=
       "║ Lorem ipsum dolor sit     │       │                           ║"
           + System.lineSeparator();
   expected +=
       "║ amet, consetetur          │       │                           ║"
           + System.lineSeparator();
   expected +=
       "║ sadipscing elitr          │       │                           ║"
           + System.lineSeparator();
   expected +=
       "╚═══════════════════════════╧═══════╧═══════════════════════════╝"
           + System.lineSeparator();
   assertEquals(expected, aat.getOutput());
 }