Andrew's git / gitweb.git / t/t7603-merge-reduce-heads.sh
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t / t7603-merge-reduce-heads.shon commit Merge branch 'maint' (15dc66a)
   1#!/bin/sh
   2
   3test_description='git merge
   4
   5Testing octopus merge when reducing parents to independent branches.'
   6
   7. ./test-lib.sh
   8
   9# 0 - 1
  10#   \ 2
  11#   \ 3
  12#   \ 4 - 5
  13#
  14# So 1, 2, 3 and 5 should be kept, 4 should be avoided.
  15
  16test_expect_success 'setup' '
  17        echo c0 > c0.c &&
  18        git add c0.c &&
  19        git commit -m c0 &&
  20        git tag c0 &&
  21        echo c1 > c1.c &&
  22        git add c1.c &&
  23        git commit -m c1 &&
  24        git tag c1 &&
  25        git reset --hard c0 &&
  26        echo c2 > c2.c &&
  27        git add c2.c &&
  28        git commit -m c2 &&
  29        git tag c2 &&
  30        git reset --hard c0 &&
  31        echo c3 > c3.c &&
  32        git add c3.c &&
  33        git commit -m c3 &&
  34        git tag c3 &&
  35        git reset --hard c0 &&
  36        echo c4 > c4.c &&
  37        git add c4.c &&
  38        git commit -m c4 &&
  39        git tag c4 &&
  40        echo c5 > c5.c &&
  41        git add c5.c &&
  42        git commit -m c5 &&
  43        git tag c5
  44'
  45
  46test_expect_success 'merge c1 with c2, c3, c4, c5' '
  47        git reset --hard c1 &&
  48        git merge c2 c3 c4 c5 &&
  49        test "$(git rev-parse c1)" != "$(git rev-parse HEAD)" &&
  50        test "$(git rev-parse c1)" = "$(git rev-parse HEAD^1)" &&
  51        test "$(git rev-parse c2)" = "$(git rev-parse HEAD^2)" &&
  52        test "$(git rev-parse c3)" = "$(git rev-parse HEAD^3)" &&
  53        test "$(git rev-parse c5)" = "$(git rev-parse HEAD^4)" &&
  54        git diff --exit-code &&
  55        test -f c0.c &&
  56        test -f c1.c &&
  57        test -f c2.c &&
  58        test -f c3.c &&
  59        test -f c4.c &&
  60        test -f c5.c
  61'
  62
  63test_expect_success 'setup' '
  64        for i in A B C D E
  65        do
  66                echo $i > $i.c &&
  67                git add $i.c &&
  68                git commit -m $i &&
  69                git tag $i
  70        done &&
  71        git reset --hard A &&
  72        for i in F G H I
  73        do
  74                echo $i > $i.c &&
  75                git add $i.c &&
  76                git commit -m $i &&
  77                git tag $i
  78        done
  79'
  80
  81test_expect_success 'merge E and I' '
  82        git reset --hard A &&
  83        git merge E I
  84'
  85
  86test_expect_success 'verify merge result' '
  87        test $(git rev-parse HEAD^1) = $(git rev-parse E) &&
  88        test $(git rev-parse HEAD^2) = $(git rev-parse I)
  89'
  90
  91test_expect_success 'add conflicts' '
  92        git reset --hard E &&
  93        echo foo > file.c &&
  94        git add file.c &&
  95        git commit -m E2 &&
  96        git tag E2 &&
  97        git reset --hard I &&
  98        echo bar >file.c &&
  99        git add file.c &&
 100        git commit -m I2 &&
 101        git tag I2
 102'
 103
 104test_expect_success 'merge E2 and I2, causing a conflict and resolve it' '
 105        git reset --hard A &&
 106        test_must_fail git merge E2 I2 &&
 107        echo baz > file.c &&
 108        git add file.c &&
 109        git commit -m "resolve conflict"
 110'
 111
 112test_expect_success 'verify merge result' '
 113        test $(git rev-parse HEAD^1) = $(git rev-parse E2) &&
 114        test $(git rev-parse HEAD^2) = $(git rev-parse I2)
 115'
 116test_done