originalColumnHeader = natTableFixture.getDataValueByPosition(2, 0)
.toString();
assertEquals("Column 3", originalColumnHeader);
natTableFixture.doCommand(new RenameColumnHeaderCommand(
natTableFixture, 2, TEST_COLUMN_NAME));
String renamedColumnHeader = natTableFixture.getDataValueByPosition(2,
0).toString();
assertEquals(TEST_COLUMN_NAME, renamedColumnHeader);