t/t3425-rebase-topology-merges.sh

   1 #!/bin/sh
   2
   3 test_description='rebase topology tests with merges'
   4 . ./test-lib.sh
   5 . "$TEST_DIRECTORY"/lib-rebase.sh
   6
   7 test_revision_subjects () {
   8         expected="$1"
   9         shift
  10         set -- $(git log --format=%s --no-walk=unsorted "$@")
  11         test "$expected" = "$*"
  12 }
  13
  14 # a---b-----------c
  15 #      \           \
  16 #       d-------e   \
  17 #        \       \   \
  18 #         n---o---w---v
  19 #              \
  20 #               z
  21 test_expect_success 'setup of non-linear-history' '
  22         test_commit a &&
  23         test_commit b &&
  24         test_commit c &&
  25         git checkout b &&
  26         test_commit d &&
  27         test_commit e &&
  28
  29         git checkout c &&
  30         test_commit g &&
  31         revert h g &&
  32         git checkout d &&
  33         cherry_pick gp g &&
  34         test_commit i &&
  35         git checkout b &&
  36         test_commit f &&
  37
  38         git checkout d &&
  39         test_commit n &&
  40         test_commit o &&
  41         test_merge w e &&
  42         test_merge v c &&
  43         git checkout o &&
  44         test_commit z
  45 '
  46
  47 test_run_rebase () {
  48         result=$1
  49         shift
  50         test_expect_$result "rebase $* after merge from upstream" "
  51                 reset_rebase &&
  52                 git rebase $* e w &&
  53                 test_cmp_rev e HEAD~2 &&
  54                 test_linear_range 'n o' e..
  55         "
  56 }
  57 test_run_rebase success ''
  58 test_run_rebase success -m
  59 test_run_rebase success -i
  60
  61 test_run_rebase () {
  62         result=$1
  63         shift
  64         expected=$1
  65         shift
  66         test_expect_$result "rebase $* of non-linear history is linearized in place" "
  67                 reset_rebase &&
  68                 git rebase $* d w &&
  69                 test_cmp_rev d HEAD~3 &&
  70                 test_linear_range "\'"$expected"\'" d..
  71         "
  72 }
  73 #TODO: make order consistent across all flavors of rebase
  74 test_run_rebase success 'e n o' ''
  75 test_run_rebase success 'e n o' -m
  76 test_run_rebase success 'n o e' -i
  77
  78 test_run_rebase () {
  79         result=$1
  80         shift
  81         expected=$1
  82         shift
  83         test_expect_$result "rebase $* of non-linear history is linearized upstream" "
  84                 reset_rebase &&
  85                 git rebase $* c w &&
  86                 test_cmp_rev c HEAD~4 &&
  87                 test_linear_range "\'"$expected"\'" c..
  88         "
  89 }
  90 #TODO: make order consistent across all flavors of rebase
  91 test_run_rebase success 'd e n o' ''
  92 test_run_rebase success 'd e n o' -m
  93 test_run_rebase success 'd n o e' -i
  94
  95 test_run_rebase () {
  96         result=$1
  97         shift
  98         expected=$1
  99         shift
 100         test_expect_$result "rebase $* of non-linear history with merges after upstream merge is linearized" "
 101                 reset_rebase &&
 102                 git rebase $* c v &&
 103                 test_cmp_rev c HEAD~4 &&
 104                 test_linear_range "\'"$expected"\'" c..
 105         "
 106 }
 107 #TODO: make order consistent across all flavors of rebase
 108 test_run_rebase success 'd e n o' ''
 109 test_run_rebase success 'd e n o' -m
 110 test_run_rebase success 'd n o e' -i
 111
 112 test_expect_success "rebase -p is no-op in non-linear history" "
 113         reset_rebase &&
 114         git rebase -p d w &&
 115         test_cmp_rev w HEAD
 116 "
 117
 118 test_expect_success "rebase -p is no-op when base inside second parent" "
 119         reset_rebase &&
 120         git rebase -p e w &&
 121         test_cmp_rev w HEAD
 122 "
 123
 124 test_expect_failure "rebase -p --root on non-linear history is a no-op" "
 125         reset_rebase &&
 126         git rebase -p --root w &&
 127         test_cmp_rev w HEAD
 128 "
 129
 130 test_expect_success "rebase -p re-creates merge from side branch" "
 131         reset_rebase &&
 132         git rebase -p z w &&
 133         test_cmp_rev z HEAD^ &&
 134         test_cmp_rev w^2 HEAD^2
 135 "
 136
 137 test_expect_success "rebase -p re-creates internal merge" "
 138         reset_rebase &&
 139         git rebase -p c w &&
 140         test_cmp_rev c HEAD~4 &&
 141         test_cmp_rev HEAD^2^ HEAD~3 &&
 142         test_revision_subjects 'd n e o w' HEAD~3 HEAD~2 HEAD^2 HEAD^ HEAD
 143 "
 144
 145 test_expect_success "rebase -p can re-create two branches on onto" "
 146         reset_rebase &&
 147         git rebase -p --onto c d w &&
 148         test_cmp_rev c HEAD~3 &&
 149         test_cmp_rev c HEAD^2^ &&
 150         test_revision_subjects 'n e o w' HEAD~2 HEAD^2 HEAD^ HEAD
 151 "
 152
 153 #       f
 154 #      /
 155 # a---b---c---g---h
 156 #      \
 157 #       d---gp--i
 158 #        \       \
 159 #         e-------u
 160 #
 161 # gp = cherry-picked g
 162 # h = reverted g
 163 test_expect_success 'setup of non-linear-history for patch-equivalence tests' '
 164         git checkout e &&
 165         test_merge u i
 166 '
 167
 168 test_expect_success "rebase -p re-creates history around dropped commit matching upstream" "
 169         reset_rebase &&
 170         git rebase -p h u &&
 171         test_cmp_rev h HEAD~3 &&
 172         test_cmp_rev HEAD^2^ HEAD~2 &&
 173         test_revision_subjects 'd i e u' HEAD~2 HEAD^2 HEAD^ HEAD
 174 "
 175
 176 test_expect_success "rebase -p --onto in merged history drops patches in upstream" "
 177         reset_rebase &&
 178         git rebase -p --onto f h u &&
 179         test_cmp_rev f HEAD~3 &&
 180         test_cmp_rev HEAD^2^ HEAD~2 &&
 181         test_revision_subjects 'd i e u' HEAD~2 HEAD^2 HEAD^ HEAD
 182 "
 183
 184 test_expect_success "rebase -p --onto in merged history does not drop patches in onto" "
 185         reset_rebase &&
 186         git rebase -p --onto h f u &&
 187         test_cmp_rev h HEAD~3 &&
 188         test_cmp_rev HEAD^2~2 HEAD~2 &&
 189         test_revision_subjects 'd gp i e u' HEAD~2 HEAD^2^ HEAD^2 HEAD^ HEAD
 190 "
 191
 192 # a---b---c---g---h
 193 #      \
 194 #       d---gp--s
 195 #        \   \ /
 196 #         \   X
 197 #          \ / \
 198 #           e---t
 199 #
 200 # gp = cherry-picked g
 201 # h = reverted g
 202 test_expect_success 'setup of non-linear-history for dropping whole side' '
 203         git checkout gp &&
 204         test_merge s e &&
 205         git checkout e &&
 206         test_merge t gp
 207 '
 208
 209 test_expect_failure "rebase -p drops merge commit when entire first-parent side is dropped" "
 210         reset_rebase &&
 211         git rebase -p h s &&
 212         test_cmp_rev h HEAD~2 &&
 213         test_linear_range 'd e' h..
 214 "
 215
 216 test_expect_success "rebase -p drops merge commit when entire second-parent side is dropped" "
 217         reset_rebase &&
 218         git rebase -p h t &&
 219         test_cmp_rev h HEAD~2 &&
 220         test_linear_range 'd e' h..
 221 "
 222
 223 # a---b---c
 224 #      \
 225 #       d---e
 226 #        \   \
 227 #         n---r
 228 #          \
 229 #           o
 230 #
 231 # r = tree-same with n
 232 test_expect_success 'setup of non-linear-history for empty commits' '
 233         git checkout n &&
 234         git merge --no-commit e &&
 235         git reset n . &&
 236         git commit -m r &&
 237         git reset --hard &&
 238         git clean -f &&
 239         git tag r
 240 '
 241
 242 test_expect_success "rebase -p re-creates empty internal merge commit" "
 243         reset_rebase &&
 244         git rebase -p c r &&
 245         test_cmp_rev c HEAD~3 &&
 246         test_cmp_rev HEAD^2^ HEAD~2 &&
 247         test_revision_subjects 'd e n r' HEAD~2 HEAD^2 HEAD^ HEAD
 248 "
 249
 250 test_expect_success "rebase -p re-creates empty merge commit" "
 251         reset_rebase &&
 252         git rebase -p o r &&
 253         test_cmp_rev e HEAD^2 &&
 254         test_cmp_rev o HEAD^ &&
 255         test_revision_subjects 'r' HEAD
 256 "
 257
 258 test_done