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 test_run_rebase success 'n o e' ''
  74 test_run_rebase success 'n o e' -m
  75 test_run_rebase success 'n o e' -i
  76
  77 test_run_rebase () {
  78         result=$1
  79         shift
  80         expected=$1
  81         shift
  82         test_expect_$result "rebase $* of non-linear history is linearized upstream" "
  83                 reset_rebase &&
  84                 git rebase $* c w &&
  85                 test_cmp_rev c HEAD~4 &&
  86                 test_linear_range "\'"$expected"\'" c..
  87         "
  88 }
  89 test_run_rebase success 'd n o e' ''
  90 test_run_rebase success 'd n o e' -m
  91 test_run_rebase success 'd n o e' -i
  92
  93 test_run_rebase () {
  94         result=$1
  95         shift
  96         expected=$1
  97         shift
  98         test_expect_$result "rebase $* of non-linear history with merges after upstream merge is linearized" "
  99                 reset_rebase &&
 100                 git rebase $* c v &&
 101                 test_cmp_rev c HEAD~4 &&
 102                 test_linear_range "\'"$expected"\'" c..
 103         "
 104 }
 105 test_run_rebase success 'd n o e' ''
 106 test_run_rebase success 'd n o e' -m
 107 test_run_rebase success 'd n o e' -i
 108
 109 if ! test_have_prereq REBASE_P; then
 110         skip_all='skipping git rebase -p tests, as asked for'
 111         test_done
 112 fi
 113
 114 test_expect_success "rebase -p is no-op in non-linear history" "
 115         reset_rebase &&
 116         git rebase -p d w &&
 117         test_cmp_rev w HEAD
 118 "
 119
 120 test_expect_success "rebase -p is no-op when base inside second parent" "
 121         reset_rebase &&
 122         git rebase -p e w &&
 123         test_cmp_rev w HEAD
 124 "
 125
 126 test_expect_failure "rebase -p --root on non-linear history is a no-op" "
 127         reset_rebase &&
 128         git rebase -p --root w &&
 129         test_cmp_rev w HEAD
 130 "
 131
 132 test_expect_success "rebase -p re-creates merge from side branch" "
 133         reset_rebase &&
 134         git rebase -p z w &&
 135         test_cmp_rev z HEAD^ &&
 136         test_cmp_rev w^2 HEAD^2
 137 "
 138
 139 test_expect_success "rebase -p re-creates internal merge" "
 140         reset_rebase &&
 141         git rebase -p c w &&
 142         test_cmp_rev c HEAD~4 &&
 143         test_cmp_rev HEAD^2^ HEAD~3 &&
 144         test_revision_subjects 'd n e o w' HEAD~3 HEAD~2 HEAD^2 HEAD^ HEAD
 145 "
 146
 147 test_expect_success "rebase -p can re-create two branches on onto" "
 148         reset_rebase &&
 149         git rebase -p --onto c d w &&
 150         test_cmp_rev c HEAD~3 &&
 151         test_cmp_rev c HEAD^2^ &&
 152         test_revision_subjects 'n e o w' HEAD~2 HEAD^2 HEAD^ HEAD
 153 "
 154
 155 #       f
 156 #      /
 157 # a---b---c---g---h
 158 #      \
 159 #       d---gp--i
 160 #        \       \
 161 #         e-------u
 162 #
 163 # gp = cherry-picked g
 164 # h = reverted g
 165 test_expect_success 'setup of non-linear-history for patch-equivalence tests' '
 166         git checkout e &&
 167         test_merge u i
 168 '
 169
 170 test_expect_success "rebase -p re-creates history around dropped commit matching upstream" "
 171         reset_rebase &&
 172         git rebase -p h u &&
 173         test_cmp_rev h HEAD~3 &&
 174         test_cmp_rev HEAD^2^ HEAD~2 &&
 175         test_revision_subjects 'd i e u' HEAD~2 HEAD^2 HEAD^ HEAD
 176 "
 177
 178 test_expect_success "rebase -p --onto in merged history drops patches in upstream" "
 179         reset_rebase &&
 180         git rebase -p --onto f h u &&
 181         test_cmp_rev f HEAD~3 &&
 182         test_cmp_rev HEAD^2^ HEAD~2 &&
 183         test_revision_subjects 'd i e u' HEAD~2 HEAD^2 HEAD^ HEAD
 184 "
 185
 186 test_expect_success "rebase -p --onto in merged history does not drop patches in onto" "
 187         reset_rebase &&
 188         git rebase -p --onto h f u &&
 189         test_cmp_rev h HEAD~3 &&
 190         test_cmp_rev HEAD^2~2 HEAD~2 &&
 191         test_revision_subjects 'd gp i e u' HEAD~2 HEAD^2^ HEAD^2 HEAD^ HEAD
 192 "
 193
 194 # a---b---c---g---h
 195 #      \
 196 #       d---gp--s
 197 #        \   \ /
 198 #         \   X
 199 #          \ / \
 200 #           e---t
 201 #
 202 # gp = cherry-picked g
 203 # h = reverted g
 204 test_expect_success 'setup of non-linear-history for dropping whole side' '
 205         git checkout gp &&
 206         test_merge s e &&
 207         git checkout e &&
 208         test_merge t gp
 209 '
 210
 211 test_expect_failure "rebase -p drops merge commit when entire first-parent side is dropped" "
 212         reset_rebase &&
 213         git rebase -p h s &&
 214         test_cmp_rev h HEAD~2 &&
 215         test_linear_range 'd e' h..
 216 "
 217
 218 test_expect_success "rebase -p drops merge commit when entire second-parent side is dropped" "
 219         reset_rebase &&
 220         git rebase -p h t &&
 221         test_cmp_rev h HEAD~2 &&
 222         test_linear_range 'd e' h..
 223 "
 224
 225 # a---b---c
 226 #      \
 227 #       d---e
 228 #        \   \
 229 #         n---r
 230 #          \
 231 #           o
 232 #
 233 # r = tree-same with n
 234 test_expect_success 'setup of non-linear-history for empty commits' '
 235         git checkout n &&
 236         git merge --no-commit e &&
 237         git reset n . &&
 238         git commit -m r &&
 239         git reset --hard &&
 240         git clean -f &&
 241         git tag r
 242 '
 243
 244 test_expect_success "rebase -p re-creates empty internal merge commit" "
 245         reset_rebase &&
 246         git rebase -p c r &&
 247         test_cmp_rev c HEAD~3 &&
 248         test_cmp_rev HEAD^2^ HEAD~2 &&
 249         test_revision_subjects 'd e n r' HEAD~2 HEAD^2 HEAD^ HEAD
 250 "
 251
 252 test_expect_success "rebase -p re-creates empty merge commit" "
 253         reset_rebase &&
 254         git rebase -p o r &&
 255         test_cmp_rev e HEAD^2 &&
 256         test_cmp_rev o HEAD^ &&
 257         test_revision_subjects 'r' HEAD
 258 "
 259
 260 test_done