t/t6021-merge-criss-cross.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Fredrik Kuivinen
   4 #
   5
   6 # See https://lore.kernel.org/git/Pine.LNX.4.44.0504271254120.4678-100000@wax.eds.org/ for a
   7 # nice description of what this is about.
   8
   9
  10 test_description='Test criss-cross merge'
  11 . ./test-lib.sh
  12
  13 test_expect_success 'prepare repository' '
  14         test_write_lines 1 2 3 4 5 6 7 8 9 >file &&
  15         git add file &&
  16         git commit -m "Initial commit" file &&
  17
  18         git branch A &&
  19         git branch B &&
  20         git checkout A &&
  21
  22         test_write_lines 1 2 3 4 5 6 7 "8 changed in B8, branch A" 9 >file &&
  23         git commit -m "B8" file &&
  24         git checkout B &&
  25
  26         test_write_lines 1 2 "3 changed in C3, branch B" 4 5 6 7 8 9 >file &&
  27         git commit -m "C3" file &&
  28         git branch C3 &&
  29
  30         git merge -m "pre E3 merge" A &&
  31
  32         test_write_lines 1 2 "3 changed in E3, branch B. New file size" 4 5 6 7 "8 changed in B8, branch A" 9 >file &&
  33         git commit -m "E3" file &&
  34
  35         git checkout A &&
  36         git merge -m "pre D8 merge" C3 &&
  37         test_write_lines 1 2 "3 changed in C3, branch B" 4 5 6 7 "8 changed in D8, branch A. New file size 2" 9 >file &&
  38
  39         git commit -m D8 file
  40 '
  41
  42 test_expect_success 'Criss-cross merge' '
  43         git merge -m "final merge" B
  44 '
  45
  46 test_expect_success 'Criss-cross merge result' '
  47         cat <<-\EOF >file-expect &&
  48         1
  49         2
  50         3 changed in E3, branch B. New file size
  51         4
  52         5
  53         6
  54         7
  55         8 changed in D8, branch A. New file size 2
  56         9
  57         EOF
  58
  59         test_cmp file-expect file
  60 '
  61
  62 test_expect_success 'Criss-cross merge fails (-s resolve)' '
  63         git reset --hard A^ &&
  64         test_must_fail git merge -s resolve -m "final merge" B
  65 '
  66
  67 test_done