t/t3033-merge-toplevel.sh

   1 #!/bin/sh
   2
   3 test_description='"git merge" top-level frontend'
   4
   5 . ./test-lib.sh
   6
   7 t3033_reset () {
   8         git checkout -B master two &&
   9         git branch -f left three &&
  10         git branch -f right four
  11 }
  12
  13 test_expect_success setup '
  14         test_commit one &&
  15         git branch left &&
  16         git branch right &&
  17         test_commit two &&
  18         git checkout left &&
  19         test_commit three &&
  20         git checkout right &&
  21         test_commit four &&
  22         git checkout --orphan newroot &&
  23         test_commit five &&
  24         git checkout master
  25 '
  26
  27 # Local branches
  28
  29 test_expect_success 'merge an octopus into void' '
  30         t3033_reset &&
  31         git checkout --orphan test &&
  32         git rm -fr . &&
  33         test_must_fail git merge left right &&
  34         test_must_fail git rev-parse --verify HEAD &&
  35         git diff --quiet &&
  36         test_must_fail git rev-parse HEAD
  37 '
  38
  39 test_expect_success 'merge an octopus, fast-forward (ff)' '
  40         t3033_reset &&
  41         git reset --hard one &&
  42         git merge left right &&
  43         # one is ancestor of three (left) and four (right)
  44         test_must_fail git rev-parse --verify HEAD^3 &&
  45         git rev-parse HEAD^1 HEAD^2 | sort >actual &&
  46         git rev-parse three four | sort >expect &&
  47         test_cmp expect actual
  48 '
  49
  50 test_expect_success 'merge octopus, non-fast-forward (ff)' '
  51         t3033_reset &&
  52         git reset --hard one &&
  53         git merge --no-ff left right &&
  54         # one is ancestor of three (left) and four (right)
  55         test_must_fail git rev-parse --verify HEAD^4 &&
  56         git rev-parse HEAD^1 HEAD^2 HEAD^3 | sort >actual &&
  57         git rev-parse one three four | sort >expect &&
  58         test_cmp expect actual
  59 '
  60
  61 test_expect_success 'merge octopus, fast-forward (does not ff)' '
  62         t3033_reset &&
  63         git merge left right &&
  64         # two (master) is not an ancestor of three (left) and four (right)
  65         test_must_fail git rev-parse --verify HEAD^4 &&
  66         git rev-parse HEAD^1 HEAD^2 HEAD^3 | sort >actual &&
  67         git rev-parse two three four | sort >expect &&
  68         test_cmp expect actual
  69 '
  70
  71 test_expect_success 'merge octopus, non-fast-forward' '
  72         t3033_reset &&
  73         git merge --no-ff left right &&
  74         test_must_fail git rev-parse --verify HEAD^4 &&
  75         git rev-parse HEAD^1 HEAD^2 HEAD^3 | sort >actual &&
  76         git rev-parse two three four | sort >expect &&
  77         test_cmp expect actual
  78 '
  79
  80 # The same set with FETCH_HEAD
  81
  82 test_expect_success 'merge FETCH_HEAD octopus into void' '
  83         t3033_reset &&
  84         git checkout --orphan test &&
  85         git rm -fr . &&
  86         git fetch . left right &&
  87         test_must_fail git merge FETCH_HEAD &&
  88         test_must_fail git rev-parse --verify HEAD &&
  89         git diff --quiet &&
  90         test_must_fail git rev-parse HEAD
  91 '
  92
  93 test_expect_success 'merge FETCH_HEAD octopus fast-forward (ff)' '
  94         t3033_reset &&
  95         git reset --hard one &&
  96         git fetch . left right &&
  97         git merge FETCH_HEAD &&
  98         # one is ancestor of three (left) and four (right)
  99         test_must_fail git rev-parse --verify HEAD^3 &&
 100         git rev-parse HEAD^1 HEAD^2 | sort >actual &&
 101         git rev-parse three four | sort >expect &&
 102         test_cmp expect actual
 103 '
 104
 105 test_expect_success 'merge FETCH_HEAD octopus non-fast-forward (ff)' '
 106         t3033_reset &&
 107         git reset --hard one &&
 108         git fetch . left right &&
 109         git merge --no-ff FETCH_HEAD &&
 110         # one is ancestor of three (left) and four (right)
 111         test_must_fail git rev-parse --verify HEAD^4 &&
 112         git rev-parse HEAD^1 HEAD^2 HEAD^3 | sort >actual &&
 113         git rev-parse one three four | sort >expect &&
 114         test_cmp expect actual
 115 '
 116
 117 test_expect_success 'merge FETCH_HEAD octopus fast-forward (does not ff)' '
 118         t3033_reset &&
 119         git fetch . left right &&
 120         git merge FETCH_HEAD &&
 121         # two (master) is not an ancestor of three (left) and four (right)
 122         test_must_fail git rev-parse --verify HEAD^4 &&
 123         git rev-parse HEAD^1 HEAD^2 HEAD^3 | sort >actual &&
 124         git rev-parse two three four | sort >expect &&
 125         test_cmp expect actual
 126 '
 127
 128 test_expect_success 'merge FETCH_HEAD octopus non-fast-forward' '
 129         t3033_reset &&
 130         git fetch . left right &&
 131         git merge --no-ff FETCH_HEAD &&
 132         test_must_fail git rev-parse --verify HEAD^4 &&
 133         git rev-parse HEAD^1 HEAD^2 HEAD^3 | sort >actual &&
 134         git rev-parse two three four | sort >expect &&
 135         test_cmp expect actual
 136 '
 137
 138 # two-project merge
 139 test_expect_success 'refuse two-project merge by default' '
 140         t3033_reset &&
 141         git reset --hard four &&
 142         test_must_fail git merge five
 143 '
 144
 145 test_expect_success 'two-project merge with --allow-unrelated-histories' '
 146         t3033_reset &&
 147         git reset --hard four &&
 148         git merge --allow-unrelated-histories five &&
 149         git diff --exit-code five
 150 '
 151
 152 test_done