# TODO: make sure all test_names are unique!!!!
# test name
#     flags       file-1 file-2    expected output   expected return code
#
('1a', '-a1',      "a 1\n", "b\n",   "a 1\n",          0);
('1b', '-a2',      "a 1\n", "b\n",   "b\n",            0); # Got "\n"
('1c', '-a1 -a2',  "a 1\n", "b\n",   "a 1\nb\n",       0); # Got "a 1\n\n"
('1d', '-a1',      "a 1\nb\n", "b\n",   "a 1\nb\n",    0);
('1e', '-a2',      "a 1\nb\n", "b\n",   "b\n",         0);
('1f', '-a2',      "b\n", "a\nb\n", "a\nb\n",          0);

('2a', '-a1 -e .',  "a\nb\nc\n", "a x y\nb\nc\n", "a x y\nb\nc\n", 0);
('2b', '-a1 -e . -o 2.1,2.2,2.3',  "a\nb\nc\n", "a x y\nb\nc\n", "a x y\nb . .\nc . .\n", 0);
('2c', '-a1 -e . -o 2.1,2.2,2.3',  "a\nb\nc\nd\n", "a x y\nb\nc\n", "a x y\nb . .\nc . .\n. . .\n", 0);

('3a', '-t:', "a:1\nb:1\n", "a:2:\nb:2:\n", "a:1:2:\nb:1:2:\n", 0);

# Just like -a1 and -a2 when there are no pairable lines
('4a', '-v 1', "a 1\n", "b\n",   "a 1\n",          0);
('4b', '-v 2', "a 1\n", "b\n",   "b\n",            0);

('4c', '-v 1', "a 1\nb\n", "b\n",        "a 1\n",       0);
('4d', '-v 2', "a 1\nb\n", "b\n",        "",            0);
('4e', '-v 2', "b\n",      "a 1\nb\n",   "a 1\n",       0);
('5a', '-a1 -e - -o 1.1 2.2', "a 1\nb 2\n",  "a 11\nb\n", "a 11\nb -\n", 0);
('5b', '-a1 -e - -o 1.1 2.2', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\nfeb 15", "apr 06\naug 14\ndec -\nfeb 15\n", 0);
('5c', '-a1 -e - -o 1.1 2.2', "aug 20\ndec 18\n",  "aug 14\ndate\nfeb 15", "aug 14\ndec -\n", 0);
('5d', '-a1 -e - -o 1.1 2.2', "dec 18\n",  "", "dec -\n", 0);
('5e', '-a2 -e - -o 1.1 2.2', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\nfeb 15\n", "apr 06\naug 14\n- -\nfeb 15\n", 0);
('5f', '-a2 -e - -o 2.2 1.1', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\nfeb 15\n", "06 apr\n14 aug\n- -\n15 feb\n", 0);
('5g', '-a1 -e - -o 2.2 1.1', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\nfeb 15\n", "06 apr\n14 aug\n- dec\n15 feb\n", 0);

('5h', '-a1 -e - -o 2.2 1.1', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\n", "06 apr\n14 aug\n- dec\n- feb\n", 0);
('5i', '-a1 -e - -o 1.1 2.2', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\n", "apr 06\naug 14\ndec -\nfeb -\n", 0);

('5j', '-a2 -e - -o 2.2 1.1', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\n", "06 apr\n14 aug\n- -\n", 0);
('5k', '-a2 -e - -o 2.2 1.1', "apr 15\naug 20\ndec 18\nfeb 05\n",  "apr 06\naug 14\ndate\n", "06 apr\n14 aug\n- -\n", 0);

('5l', '-a1 -e - -o 2.2 1.1', "apr 15\naug 20\ndec 18\n",  "apr 06\naug 14\ndate\nfeb 15\n", "06 apr\n14 aug\n- dec\n", 0);
('5m', '-a2 -e - -o 2.2 1.1', "apr 15\naug 20\ndec 18\n",  "apr 06\naug 14\ndate\nfeb 15\n", "06 apr\n14 aug\n- -\n15 -\n", 0);

('6a', '-e -', "a 1\nb 2\nd 4\n",  "a 21\nb 22\nc 23\nf 26\n", "a 1 21\nb 2 22\n", 0);
('6b', '-a1 -e -', "a 1\nb 2\nd 4\n",  "a 21\nb 22\nc 23\nf 26\n", "a 1 21\nb 2 22\nd 4\n", 0);
('6c', '-a1 -e -', "a 21\nb 22\nc 23\nf 26\n", "a 1\nb 2\nd 4\n", "a 21 1\nb 22 2\nc 23\nf 26\n", 0);

('7a', '-a1 -e . -o 2.7',  "a\nb\nc\n", "a x y\nb\nc\n", ".\n.\n.\n", 0);

('8a', '-a1 -e . -o 0,1.2',  "a\nb\nc\nd G\n", "a x y\nb\nc\ne\n", "a .\nb .\nc .\nd G\n", 0);
('8b', '-a1 -a2 -e . -o 0,1.2',  "a\nb\nc\nd G\n", "a x y\nb\nc\ne\n", "a .\nb .\nc .\nd G\ne .\n", 0);

# From David Dyck
('9a', '',  " a 1\n b 2\n", " a Y\n b Z\n", "a 1 Y\nb 2 Z\n", 0);