t/t3204-branch-name-interpretation.sh

   1 #!/bin/sh
   2
   3 test_description='interpreting exotic branch name arguments
   4
   5 Branch name arguments are usually names which are taken to be inside of
   6 refs/heads/, but we interpret some magic syntax like @{-1}, @{upstream}, etc.
   7 This script aims to check the behavior of those corner cases.
   8 '
   9 . ./test-lib.sh
  10
  11 expect_branch() {
  12         git log -1 --format=%s "$1" >actual &&
  13         echo "$2" >expect &&
  14         test_cmp expect actual
  15 }
  16
  17 expect_deleted() {
  18         test_must_fail git rev-parse --verify "$1"
  19 }
  20
  21 test_expect_success 'set up repo' '
  22         test_commit one &&
  23         test_commit two &&
  24         git remote add origin foo.git
  25 '
  26
  27 test_expect_success 'update branch via @{-1}' '
  28         git branch previous one &&
  29
  30         git checkout previous &&
  31         git checkout master &&
  32
  33         git branch -f @{-1} two &&
  34         expect_branch previous two
  35 '
  36
  37 test_expect_success 'update branch via local @{upstream}' '
  38         git branch local one &&
  39         git branch --set-upstream-to=local &&
  40
  41         git branch -f @{upstream} two &&
  42         expect_branch local two
  43 '
  44
  45 test_expect_success 'disallow updating branch via remote @{upstream}' '
  46         git update-ref refs/remotes/origin/remote one &&
  47         git branch --set-upstream-to=origin/remote &&
  48
  49         test_must_fail git branch -f @{upstream} two
  50 '
  51
  52 test_expect_success 'create branch with pseudo-qualified name' '
  53         git branch refs/heads/qualified two &&
  54         expect_branch refs/heads/refs/heads/qualified two
  55 '
  56
  57 test_expect_success 'delete branch via @{-1}' '
  58         git branch previous-del &&
  59
  60         git checkout previous-del &&
  61         git checkout master &&
  62
  63         git branch -D @{-1} &&
  64         expect_deleted previous-del
  65 '
  66
  67 test_expect_success 'delete branch via local @{upstream}' '
  68         git branch local-del &&
  69         git branch --set-upstream-to=local-del &&
  70
  71         git branch -D @{upstream} &&
  72         expect_deleted local-del
  73 '
  74
  75 test_expect_success 'delete branch via remote @{upstream}' '
  76         git update-ref refs/remotes/origin/remote-del two &&
  77         git branch --set-upstream-to=origin/remote-del &&
  78
  79         git branch -r -D @{upstream} &&
  80         expect_deleted origin/remote-del
  81 '
  82
  83 # Note that we create two oddly named local branches here. We want to make
  84 # sure that we do not accidentally delete either of them, even if
  85 # shorten_unambiguous_ref() tweaks the name to avoid ambiguity.
  86 test_expect_success 'delete @{upstream} expansion matches -r option' '
  87         git update-ref refs/remotes/origin/remote-del two &&
  88         git branch --set-upstream-to=origin/remote-del &&
  89         git update-ref refs/heads/origin/remote-del two &&
  90         git update-ref refs/heads/remotes/origin/remote-del two &&
  91
  92         test_must_fail git branch -D @{upstream} &&
  93         expect_branch refs/heads/origin/remote-del two &&
  94         expect_branch refs/heads/remotes/origin/remote-del two
  95 '
  96
  97 test_expect_success 'disallow deleting remote branch via @{-1}' '
  98         git update-ref refs/remotes/origin/previous one &&
  99
 100         git checkout -b origin/previous two &&
 101         git checkout master &&
 102
 103         test_must_fail git branch -r -D @{-1} &&
 104         expect_branch refs/remotes/origin/previous one &&
 105         expect_branch refs/heads/origin/previous two
 106 '
 107
 108 # The thing we are testing here is that "@" is the real branch refs/heads/@,
 109 # and not refs/heads/HEAD. These tests should not imply that refs/heads/@ is a
 110 # sane thing, but it _is_ technically allowed for now. If we disallow it, these
 111 # can be switched to test_must_fail.
 112 test_expect_success 'create branch named "@"' '
 113         git branch -f @ one &&
 114         expect_branch refs/heads/@ one
 115 '
 116
 117 test_expect_success 'delete branch named "@"' '
 118         git update-ref refs/heads/@ two &&
 119         git branch -D @ &&
 120         expect_deleted refs/heads/@
 121 '
 122
 123 test_expect_success 'checkout does not treat remote @{upstream} as a branch' '
 124         git update-ref refs/remotes/origin/checkout one &&
 125         git branch --set-upstream-to=origin/checkout &&
 126         git update-ref refs/heads/origin/checkout two &&
 127         git update-ref refs/heads/remotes/origin/checkout two &&
 128
 129         git checkout @{upstream} &&
 130         expect_branch HEAD one
 131 '
 132
 133 test_done