tests/test-data-size.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright Red Hat
   4 #
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  30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33 # Test size of data expression is calculated correctly.
  34
  35 source ./functions.sh
  36 set -e
  37 set -x
  38
  39 requires_run
  40 requires_nbdinfo
  41
  42 # Since this test is expected to fail, valgrind will also fail.
  43 skip_if_valgrind
  44
  45 size ()
  46 {
  47     data="$1"
  48     expected_size="$2"
  49
  50     size="$(
  51       nbdkit -U - -fv -D data.AST=1 data "$data" --run 'nbdinfo --size "$uri"'
  52     )"
  53     if [ "$size" -ne "$expected_size" ]; then
  54         echo "$0: data has unexpected size: $data"
  55         echo "$0: expected size:  $expected_size"
  56         echo "$0: actual size:    $size"
  57         exit 1
  58     fi
  59 }
  60
  61 # Some obvious expressions.
  62 size '' 0
  63 size '0' 1
  64 size '0 0' 2
  65 size '0 1 2 3 0' 5
  66 size '(0 1 2 3 0)' 5
  67 size 'le16:0' 2
  68 size 'be16:0' 2
  69 size 'le32:0' 4
  70 size 'be32:0' 4
  71 size 'le64:0' 8
  72 size 'be64:0' 8
  73
  74 # @offsets should extend the size even if nothing appears later.
  75 size '@100' 100
  76 size '@0' 0
  77 size '@+100' 100
  78 size '@+100 @-90' 100
  79
  80 # Nested expressions involving offsets.
  81 size '(@100) (@50)' 150
  82 size '(0 1 2 3 @100) (4 5 6 @50)' 150
  83 size '(@100) @0 (@50)' 100
  84 size '(@50) @0 (@100)' 100
  85 size '(@50) @200 (@100)' 300
  86
  87 # Alignment expressions.
  88 size '0 @^512' 512
  89 size '0 @^512 0' 513
  90
  91 # Alignment expressions in assignments.
  92 #size '@100 -> \a \a' 100    # This probably should work but doesn't
  93 size '(0 @100) -> \a \a' 100
  94 size '(0 @100) -> \a (0 @200) -> \b \a \b' 300
  95 size '(0 @100) -> \a (0 @200) -> \b \a @0 \b' 200
  96
  97 # Scripts.
  98 size '<( for i in `seq 0 99`; do printf "%04d" $i; done )' $(( 100 * 4 ))
  99 size '<( while true; do echo -n .; done )[:400]' 400
 100
 101 # Strings.
 102 size '""' 0
 103 size '"\\"' 1
 104 size '"\""' 1
 105 size '"abc"' 3
 106
 107 # Comments.
 108 size '# nothing' 0