t/t4067-diff-partial-clone.sh

   1 #!/bin/sh
   2
   3 test_description='behavior of diff when reading objects in a partial clone'
   4
   5 . ./test-lib.sh
   6
   7 test_expect_success 'git show batches blobs' '
   8         test_when_finished "rm -rf server client trace" &&
   9
  10         test_create_repo server &&
  11         echo a >server/a &&
  12         echo b >server/b &&
  13         git -C server add a b &&
  14         git -C server commit -m x &&
  15
  16         test_config -C server uploadpack.allowfilter 1 &&
  17         test_config -C server uploadpack.allowanysha1inwant 1 &&
  18         git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
  19
  20         # Ensure that there is exactly 1 negotiation by checking that there is
  21         # only 1 "done" line sent. ("done" marks the end of negotiation.)
  22         GIT_TRACE_PACKET="$(pwd)/trace" git -C client show HEAD &&
  23         grep "fetch> done" trace >done_lines &&
  24         test_line_count = 1 done_lines
  25 '
  26
  27 test_expect_success 'diff batches blobs' '
  28         test_when_finished "rm -rf server client trace" &&
  29
  30         test_create_repo server &&
  31         echo a >server/a &&
  32         echo b >server/b &&
  33         git -C server add a b &&
  34         git -C server commit -m x &&
  35         echo c >server/c &&
  36         echo d >server/d &&
  37         git -C server add c d &&
  38         git -C server commit -m x &&
  39
  40         test_config -C server uploadpack.allowfilter 1 &&
  41         test_config -C server uploadpack.allowanysha1inwant 1 &&
  42         git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
  43
  44         # Ensure that there is exactly 1 negotiation by checking that there is
  45         # only 1 "done" line sent. ("done" marks the end of negotiation.)
  46         GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
  47         grep "fetch> done" trace >done_lines &&
  48         test_line_count = 1 done_lines
  49 '
  50
  51 test_expect_success 'diff skips same-OID blobs' '
  52         test_when_finished "rm -rf server client trace" &&
  53
  54         test_create_repo server &&
  55         echo a >server/a &&
  56         echo b >server/b &&
  57         git -C server add a b &&
  58         git -C server commit -m x &&
  59         echo another-a >server/a &&
  60         git -C server add a &&
  61         git -C server commit -m x &&
  62
  63         test_config -C server uploadpack.allowfilter 1 &&
  64         test_config -C server uploadpack.allowanysha1inwant 1 &&
  65         git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
  66
  67         echo a | git hash-object --stdin >hash-old-a &&
  68         echo another-a | git hash-object --stdin >hash-new-a &&
  69         echo b | git hash-object --stdin >hash-b &&
  70
  71         # Ensure that only a and another-a are fetched.
  72         GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
  73         grep "want $(cat hash-old-a)" trace &&
  74         grep "want $(cat hash-new-a)" trace &&
  75         ! grep "want $(cat hash-b)" trace
  76 '
  77
  78 test_expect_success 'when fetching missing objects, diff skips GITLINKs' '
  79         test_when_finished "rm -rf sub server client trace" &&
  80         test_config_global protocol.file.allow always &&
  81
  82         test_create_repo sub &&
  83         test_commit -C sub first &&
  84
  85         test_create_repo server &&
  86         echo a >server/a &&
  87         git -C server add a &&
  88         git -C server submodule add "file://$(pwd)/sub" &&
  89         git -C server commit -m x &&
  90
  91         test_commit -C server/sub second &&
  92         echo another-a >server/a &&
  93         git -C server add a sub &&
  94         git -C server commit -m x &&
  95
  96         test_config -C server uploadpack.allowfilter 1 &&
  97         test_config -C server uploadpack.allowanysha1inwant 1 &&
  98         git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
  99
 100         echo a | git hash-object --stdin >hash-old-a &&
 101         echo another-a | git hash-object --stdin >hash-new-a &&
 102
 103         # Ensure that a and another-a are fetched, and check (by successful
 104         # execution of the diff) that no invalid OIDs are sent.
 105         GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
 106         grep "want $(cat hash-old-a)" trace &&
 107         grep "want $(cat hash-new-a)" trace
 108 '
 109
 110 test_expect_success 'diff with rename detection batches blobs' '
 111         test_when_finished "rm -rf server client trace" &&
 112
 113         test_create_repo server &&
 114         echo a >server/a &&
 115         printf "b\nb\nb\nb\nb\n" >server/b &&
 116         git -C server add a b &&
 117         git -C server commit -m x &&
 118         rm server/b &&
 119         printf "b\nb\nb\nb\nbX\n" >server/c &&
 120         git -C server add c &&
 121         git -C server commit -a -m x &&
 122
 123         test_config -C server uploadpack.allowfilter 1 &&
 124         test_config -C server uploadpack.allowanysha1inwant 1 &&
 125         git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
 126
 127         # Ensure that there is exactly 1 negotiation by checking that there is
 128         # only 1 "done" line sent. ("done" marks the end of negotiation.)
 129         GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD >out &&
 130         grep ":100644 100644.*R[0-9][0-9][0-9].*b.*c" out &&
 131         grep "fetch> done" trace >done_lines &&
 132         test_line_count = 1 done_lines
 133 '
 134
 135 test_expect_success 'diff does not fetch anything if inexact rename detection is not needed' '
 136         test_when_finished "rm -rf server client trace" &&
 137
 138         test_create_repo server &&
 139         echo a >server/a &&
 140         printf "b\nb\nb\nb\nb\n" >server/b &&
 141         git -C server add a b &&
 142         git -C server commit -m x &&
 143         mv server/b server/c &&
 144         git -C server add c &&
 145         git -C server commit -a -m x &&
 146
 147         test_config -C server uploadpack.allowfilter 1 &&
 148         test_config -C server uploadpack.allowanysha1inwant 1 &&
 149         git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
 150
 151         # Ensure no fetches.
 152         GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
 153         ! test_path_exists trace
 154 '
 155
 156 test_expect_success 'diff --break-rewrites fetches only if necessary, and batches blobs if it does' '
 157         test_when_finished "rm -rf server client trace" &&
 158
 159         test_create_repo server &&
 160         echo a >server/a &&
 161         printf "b\nb\nb\nb\nb\n" >server/b &&
 162         git -C server add a b &&
 163         git -C server commit -m x &&
 164         printf "c\nc\nc\nc\nc\n" >server/b &&
 165         git -C server commit -a -m x &&
 166
 167         test_config -C server uploadpack.allowfilter 1 &&
 168         test_config -C server uploadpack.allowanysha1inwant 1 &&
 169         git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
 170
 171         # Ensure no fetches.
 172         GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
 173         ! test_path_exists trace &&
 174
 175         # But with --break-rewrites, ensure that there is exactly 1 negotiation
 176         # by checking that there is only 1 "done" line sent. ("done" marks the
 177         # end of negotiation.)
 178         GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --break-rewrites --raw -M HEAD^ HEAD &&
 179         grep "fetch> done" trace >done_lines &&
 180         test_line_count = 1 done_lines
 181 '
 182
 183 test_done