diplodocus.org Git - nmh/blob - test/inc/test-eom-align

   1 #!/bin/sh
   2 # Test all combinations of alignment of the end-of-message delimiter
   3 # with the end of a stdio buffer
   4
   5 set -e
   6
   7 if test -z "${MH_OBJ_DIR}"; then
   8     srcdir=`dirname "$0"`/../..
   9     MH_OBJ_DIR=`cd "$srcdir" && pwd`; export MH_OBJ_DIR
  10 fi
  11
  12 . "$MH_OBJ_DIR/test/common.sh"
  13
  14 setup_test
  15
  16 THISDIR="$srcdir/test/inc"
  17
  18 if [ -z "$VALGRIND_ME" ]; then
  19     VALGRIND=
  20 else
  21     require_prog valgrind
  22     # Lack of quotes here is important
  23     VALGRIND="valgrind --quiet --error-exitcode=1"
  24     echo "Running tests under valgrind: takes ages!"
  25 fi
  26
  27 # First check that all our various pieces of text are
  28 # intact. (Since we're dealing in exact byte alignment
  29 # minor corruptions such as line ending changes could
  30 # render the tests useless.)
  31 (cd "$THISDIR"  && \
  32  for i in *.txt; do
  33    echo `output_md5 $i`'  '"$i" >> "$MH_TEST_DIR/inctest.md5sums"
  34  done)
  35 check "$THISDIR/md5sums" "$MH_TEST_DIR/inctest.md5sums" 'keep first'
  36
  37 FILLER="$THISDIR/filler.txt"
  38 FROMLINE="$THISDIR/fromline.txt"
  39 HDR="$THISDIR/msgheader.txt"
  40
  41 if grep From "$FILLER" >/dev/null; then
  42    echo "Somebody's messed with $FILLER -- it must not contain"
  43    echo "anything that might look like a message delimiter!"
  44    exit 1
  45 fi
  46
  47 # a sort of worst-case guess for the buffer size;
  48 # obviously a buffer boundary for this will be a boundary
  49 # for any smaller power of two size.
  50 # If you need to increase this you'll need to make filler.txt
  51 # bigger as well.
  52 STDIO_BUFSZ=16384
  53
  54 FROMLINESZ=`wc -c < "$FROMLINE"`
  55 HDRSZ=`wc -c < "$HDR"`
  56
  57 # makembox_A mboxname sz
  58 # Assemble a mailbox into file mboxname, with two messages, such
  59 # that the first is exactly sz bytes long (including its header
  60 # and its initial 'From' line and the newline which terminates it
  61 # but not the newline which mbox format demands after each message)
  62 # We also leave the body of message one in mboxname.body
  63 # (the body of message two is always $FILLER in its entirety)
  64 makembox_A () {
  65   MBOX="$1"
  66   SZ=$2
  67
  68   arith_eval $SZ - $HDRSZ - $FROMLINESZ - 1; WANTSZ=$arith_val
  69   dd if="$FILLER" of="$MBOX.body" bs="$WANTSZ" count=1 2>/dev/null
  70   echo >> "$MBOX.body"
  71   cat "$FROMLINE" "$HDR" "$MBOX.body" > "$MBOX"
  72   echo >> "$MBOX"
  73   cat "$FROMLINE" "$HDR" "$FILLER" >> "$MBOX"
  74   echo >> "$MBOX"
  75 }
  76
  77 # make_mbox_B mboxname sz
  78 # Test B makes a mailbox with one message of sz bytes long,
  79 # which ends in a partial mbox delimiter (ie part of the string
  80 # \n\nFrom '). To both do this and be a valid mbox this means
  81 # it has to end with two newlines (one of which is in the message
  82 # body and one of which is the mbox format mandated one)
  83 makembox_B () {
  84   MBOX="$1"
  85   SZ=$2
  86
  87   arith_eval $SZ - $HDRSZ - $FROMLINESZ - 1; WANTSZ=$arith_val
  88   dd if="$FILLER" of="$MBOX.body" bs="$WANTSZ" count=1 2>/dev/null
  89   echo >> "$MBOX.body"
  90   cat "$FROMLINE" "$HDR" "$MBOX.body" > "$MBOX"
  91   echo >> "$MBOX"
  92 }
  93
  94 # do_one_test_A sz
  95 # Do a single test with message one's body of size sz.
  96 do_one_test_A () {
  97   SZ=$1
  98   makembox_A "$MH_TEST_DIR/eom-align.mbox" $SZ
  99   $VALGRIND inc -silent -file "$MH_TEST_DIR/eom-align.mbox"
 100   # We know the messages should be 11 and 12 in inbox
 101   # Now get the bodies back out.
 102   body1="$MH_TEST_DIR/eom-align.inbox.body1"
 103   body2="$MH_TEST_DIR/eom-align.inbox.body2"
 104   sed -e '1,/^$/d' "$MH_TEST_DIR/Mail/inbox/11" > "$body1"
 105   sed -e '1,/^$/d' "$MH_TEST_DIR/Mail/inbox/12" > "$body2"
 106   check "$MH_TEST_DIR/eom-align.mbox.body" "$body1" 'keep first'
 107   check "$FILLER" "$body2" 'keep first'
 108   rmm 11 12
 109 }
 110
 111 # do_one_test_B sz
 112 # Do a test type B
 113 do_one_test_B () {
 114   SZ=$1
 115   makembox_B "$MH_TEST_DIR/eom-align.mbox" $SZ
 116   $VALGRIND inc -silent -file "$MH_TEST_DIR/eom-align.mbox"
 117   # We know the message should be 11 in the inbox
 118   body1="$MH_TEST_DIR/eom-align.inbox.body1"
 119   sed -e '1,/^$/d' "$MH_TEST_DIR/Mail/inbox/11" > "$body1"
 120   check "$MH_TEST_DIR/eom-align.mbox.body" "$body1" 'keep first'
 121   rmm 11
 122 }
 123
 124 # Cover a decent range around the stdio buffer size to make sure we catch
 125 # any corner cases whether they relate to total message size equal to
 126 # buffer size or to body size equal to buffer size.
 127 arith_eval $STDIO_BUFSZ - 16; START=$arith_val
 128 arith_eval $STDIO_BUFSZ + $HDRSZ + $FROMLINESZ + 32; FINISH=$arith_val
 129 [ -t 1 ]  &&  echo \
 130 "Testing inc of files with various alignments of eom marker with buffer size..."
 131
 132 #### Trouble spots for the particular input, with BUFSZ of 8192:
 133 for sz in 3146 3147 7241 7242 7243 11338 11339 15433 15434 15435; do
 134   printf '%5s A\r' $sz
 135   do_one_test_A $sz
 136 done
 137
 138 # Also 155, 174, 175, but they're too small for makembox_B to handle.
 139 for sz in 684 4074 4097 4148 4610 4611 5121 5122 6654 6655 8170 \
 140           8193 8244 8364 12266 12289 12340 16362 16385 16436; do
 141   printf '%5s B\r' $sz
 142   do_one_test_B $sz
 143 done
 144
 145 i="$START"
 146 while test $i -le $FINISH; do
 147   printf '%5s A\r' $i
 148   do_one_test_A $i
 149   printf '%5s B\r' $i
 150   do_one_test_B $i
 151   i=`expr $i + 1`
 152 done
 153 printf '\n'
 154
 155 test ${failed:-0} -eq 0  &&  \
 156 rm "$MH_TEST_DIR/eom-align.mbox" "$MH_TEST_DIR/eom-align.mbox.body"
 157
 158 exit $failed