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