t/t9011-svn-da.sh

   1 #!/bin/sh
   2
   3 test_description='test parsing of svndiff0 files
   4
   5 Using the "test-svn-fe -d" helper, check that svn-fe correctly
   6 interprets deltas using various facilities (some from the spec,
   7 some only learned from practice).
   8 '
   9 . ./test-lib.sh
  10
  11 >empty
  12 printf foo >preimage
  13
  14 test_expect_success 'reject empty delta' '
  15         test_must_fail test-svn-fe -d preimage empty 0
  16 '
  17
  18 test_expect_success 'delta can empty file' '
  19         printf "SVNQ" | q_to_nul >clear.delta &&
  20         test-svn-fe -d preimage clear.delta 4 >actual &&
  21         test_must_be_empty actual
  22 '
  23
  24 test_expect_success 'reject svndiff2' '
  25         printf "SVN\002" >bad.filetype &&
  26         test_must_fail test-svn-fe -d preimage bad.filetype 4
  27 '
  28
  29 test_expect_success 'one-window empty delta' '
  30         printf "SVNQ%s" "QQQQQ" | q_to_nul >clear.onewindow &&
  31         test-svn-fe -d preimage clear.onewindow 9 >actual &&
  32         test_must_be_empty actual
  33 '
  34
  35 test_expect_success 'reject incomplete window header' '
  36         printf "SVNQ%s" "QQQQQ" | q_to_nul >clear.onewindow &&
  37         printf "SVNQ%s" "QQ" | q_to_nul >clear.partialwindow &&
  38         test_must_fail test-svn-fe -d preimage clear.onewindow 6 &&
  39         test_must_fail test-svn-fe -d preimage clear.partialwindow 6
  40 '
  41
  42 test_expect_success 'reject declared delta longer than actual delta' '
  43         printf "SVNQ%s" "QQQQQ" | q_to_nul >clear.onewindow &&
  44         printf "SVNQ%s" "QQ" | q_to_nul >clear.partialwindow &&
  45         test_must_fail test-svn-fe -d preimage clear.onewindow 14 &&
  46         test_must_fail test-svn-fe -d preimage clear.partialwindow 9
  47 '
  48
  49 test_expect_success 'two-window empty delta' '
  50         printf "SVNQ%s%s" "QQQQQ" "QQQQQ" | q_to_nul >clear.twowindow &&
  51         test-svn-fe -d preimage clear.twowindow 14 >actual &&
  52         test_must_fail test-svn-fe -d preimage clear.twowindow 13 &&
  53         test_must_be_empty actual
  54 '
  55
  56 test_expect_success 'noisy zeroes' '
  57         printf "SVNQ%s" \
  58                 "RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRQQQQQ" |
  59                 tr R "\200" |
  60                 q_to_nul >clear.noisy &&
  61         len=$(wc -c <clear.noisy) &&
  62         test-svn-fe -d preimage clear.noisy $len &&
  63         test_must_be_empty actual
  64 '
  65
  66 test_expect_success 'reject variable-length int in magic' '
  67         printf "SVNRQ" | tr R "\200" | q_to_nul >clear.badmagic &&
  68         test_must_fail test-svn-fe -d preimage clear.badmagic 5
  69 '
  70
  71 test_expect_success 'reject truncated integer' '
  72         printf "SVNQ%s%s" "QQQQQ" "QQQQRRQ" |
  73                 tr R "\200" |
  74                 q_to_nul >clear.fullint &&
  75         printf "SVNQ%s%s" "QQQQQ" "QQQQRR" |
  76                 tr RT "\201" |
  77                 q_to_nul >clear.partialint &&
  78         test_must_fail test-svn-fe -d preimage clear.fullint 15 &&
  79         test-svn-fe -d preimage clear.fullint 16 &&
  80         test_must_fail test-svn-fe -d preimage clear.partialint 15
  81 '
  82
  83 test_expect_success 'nonempty (but unused) preimage view' '
  84         printf "SVNQ%b" "Q\003QQQ" | q_to_nul >clear.readpreimage &&
  85         test-svn-fe -d preimage clear.readpreimage 9 >actual &&
  86         test_must_be_empty actual
  87 '
  88
  89 test_expect_success 'preimage view: right endpoint cannot backtrack' '
  90         printf "SVNQ%b%b" "Q\003QQQ" "Q\002QQQ" |
  91                 q_to_nul >clear.backtrack &&
  92         test_must_fail test-svn-fe -d preimage clear.backtrack 14
  93 '
  94
  95 test_expect_success 'preimage view: left endpoint can advance' '
  96         printf "SVNQ%b%b" "Q\003QQQ" "\001\002QQQ" |
  97                 q_to_nul >clear.preshrink &&
  98         printf "SVNQ%b%b" "Q\003QQQ" "\001\001QQQ" |
  99                 q_to_nul >clear.shrinkbacktrack &&
 100         test-svn-fe -d preimage clear.preshrink 14 >actual &&
 101         test_must_fail test-svn-fe -d preimage clear.shrinkbacktrack 14 &&
 102         test_must_be_empty actual
 103 '
 104
 105 test_expect_success 'preimage view: offsets compared by value' '
 106         printf "SVNQ%b%b" "\001\001QQQ" "\0200Q\003QQQ" |
 107                 q_to_nul >clear.noisybacktrack &&
 108         printf "SVNQ%b%b" "\001\001QQQ" "\0200\001\002QQQ" |
 109                 q_to_nul >clear.noisyadvance &&
 110         test_must_fail test-svn-fe -d preimage clear.noisybacktrack 15 &&
 111         test-svn-fe -d preimage clear.noisyadvance 15 &&
 112         test_must_be_empty actual
 113 '
 114
 115 test_expect_success 'preimage view: reject truncated preimage' '
 116         printf "SVNQ%b" "\010QQQQ" | q_to_nul >clear.lateemptyread &&
 117         printf "SVNQ%b" "\010\001QQQ" | q_to_nul >clear.latenonemptyread &&
 118         printf "SVNQ%b" "\001\010QQQ" | q_to_nul >clear.longread &&
 119         test_must_fail test-svn-fe -d preimage clear.lateemptyread 9 &&
 120         test_must_fail test-svn-fe -d preimage clear.latenonemptyread 9 &&
 121         test_must_fail test-svn-fe -d preimage clear.longread 9
 122 '
 123
 124 test_expect_success 'forbid unconsumed inline data' '
 125         printf "SVNQ%b%s%b%s" "QQQQ\003" "bar" "QQQQ\001" "x" |
 126                 q_to_nul >inline.clear &&
 127         test_must_fail test-svn-fe -d preimage inline.clear 18 >actual
 128 '
 129
 130 test_expect_success 'reject truncated inline data' '
 131         printf "SVNQ%b%s" "QQQQ\003" "b" | q_to_nul >inline.trunc &&
 132         test_must_fail test-svn-fe -d preimage inline.trunc 10
 133 '
 134
 135 test_expect_success 'reject truncated inline data (after instruction section)' '
 136         printf "SVNQ%b%b%s" "QQ\001\001\003" "\0201" "b" | q_to_nul >insn.trunc &&
 137         test_must_fail test-svn-fe -d preimage insn.trunc 11
 138 '
 139
 140 test_expect_success 'copyfrom_data' '
 141         echo hi >expect &&
 142         printf "SVNQ%b%b%b" "QQ\003\001\003" "\0203" "hi\n" | q_to_nul >copydat &&
 143         test-svn-fe -d preimage copydat 13 >actual &&
 144         test_cmp expect actual
 145 '
 146
 147 test_expect_success 'multiple copyfrom_data' '
 148         echo hi >expect &&
 149         printf "SVNQ%b%b%b%b%b" "QQ\003\002\003" "\0201\0202" "hi\n" \
 150                 "QQQ\002Q" "\0200Q" | q_to_nul >copy.multi &&
 151         len=$(wc -c <copy.multi) &&
 152         test-svn-fe -d preimage copy.multi $len >actual &&
 153         test_cmp expect actual
 154 '
 155
 156 test_expect_success 'incomplete multiple insn' '
 157         printf "SVNQ%b%b%b" "QQ\003\002\003" "\0203\0200" "hi\n" |
 158                 q_to_nul >copy.partial &&
 159         len=$(wc -c <copy.partial) &&
 160         test_must_fail test-svn-fe -d preimage copy.partial $len
 161 '
 162
 163 test_expect_success 'catch attempt to copy missing data' '
 164         printf "SVNQ%b%b%s%b%s" "QQ\002\002\001" "\0201\0201" "X" \
 165                         "QQQQ\002" "YZ" |
 166                 q_to_nul >copy.incomplete &&
 167         len=$(wc -c <copy.incomplete) &&
 168         test_must_fail test-svn-fe -d preimage copy.incomplete $len
 169 '
 170
 171 test_expect_success 'copyfrom target to repeat data' '
 172         printf foofoo >expect &&
 173         printf "SVNQ%b%b%s" "QQ\006\004\003" "\0203\0100\003Q" "foo" |
 174                 q_to_nul >copytarget.repeat &&
 175         len=$(wc -c <copytarget.repeat) &&
 176         test-svn-fe -d preimage copytarget.repeat $len >actual &&
 177         test_cmp expect actual
 178 '
 179
 180 test_expect_success 'copyfrom target out of order' '
 181         printf foooof >expect &&
 182         printf "SVNQ%b%b%s" \
 183                 "QQ\006\007\003" "\0203\0101\002\0101\001\0101Q" "foo" |
 184                 q_to_nul >copytarget.reverse &&
 185         len=$(wc -c <copytarget.reverse) &&
 186         test-svn-fe -d preimage copytarget.reverse $len >actual &&
 187         test_cmp expect actual
 188 '
 189
 190 test_expect_success 'catch copyfrom future' '
 191         printf "SVNQ%b%b%s" "QQ\004\004\003" "\0202\0101\002\0201" "XYZ" |
 192                 q_to_nul >copytarget.infuture &&
 193         len=$(wc -c <copytarget.infuture) &&
 194         test_must_fail test-svn-fe -d preimage copytarget.infuture $len
 195 '
 196
 197 test_expect_success 'copy to sustain' '
 198         printf XYXYXYXYXYXZ >expect &&
 199         printf "SVNQ%b%b%s" "QQ\014\004\003" "\0202\0111Q\0201" "XYZ" |
 200                 q_to_nul >copytarget.sustain &&
 201         len=$(wc -c <copytarget.sustain) &&
 202         test-svn-fe -d preimage copytarget.sustain $len >actual &&
 203         test_cmp expect actual
 204 '
 205
 206 test_expect_success 'catch copy that overflows' '
 207         printf "SVNQ%b%b%s" "QQ\003\003\001" "\0201\0177Q" X |
 208                 q_to_nul >copytarget.overflow &&
 209         len=$(wc -c <copytarget.overflow) &&
 210         test_must_fail test-svn-fe -d preimage copytarget.overflow $len
 211 '
 212
 213 test_expect_success 'copyfrom source' '
 214         printf foo >expect &&
 215         printf "SVNQ%b%b" "Q\003\003\002Q" "\003Q" | q_to_nul >copysource.all &&
 216         test-svn-fe -d preimage copysource.all 11 >actual &&
 217         test_cmp expect actual
 218 '
 219
 220 test_expect_success 'copy backwards' '
 221         printf oof >expect &&
 222         printf "SVNQ%b%b" "Q\003\003\006Q" "\001\002\001\001\001Q" |
 223                 q_to_nul >copysource.rev &&
 224         test-svn-fe -d preimage copysource.rev 15 >actual &&
 225         test_cmp expect actual
 226 '
 227
 228 test_expect_success 'offsets are relative to window' '
 229         printf fo >expect &&
 230         printf "SVNQ%b%b%b%b" "Q\003\001\002Q" "\001Q" \
 231                 "\002\001\001\002Q" "\001Q" |
 232                 q_to_nul >copysource.two &&
 233         test-svn-fe -d preimage copysource.two 18 >actual &&
 234         test_cmp expect actual
 235 '
 236
 237 test_expect_success 'example from notes/svndiff' '
 238         printf aaaaccccdddddddd >expect &&
 239         printf aaaabbbbcccc >source &&
 240         printf "SVNQ%b%b%s" "Q\014\020\007\001" \
 241                 "\004Q\004\010\0201\0107\010" d |
 242                 q_to_nul >delta.example &&
 243         len=$(wc -c <delta.example) &&
 244         test-svn-fe -d source delta.example $len >actual &&
 245         test_cmp expect actual
 246 '
 247
 248 test_done