mdup: New unit for juggling file descriptors.

[mLib] / mdup-test.sh

diff --git a/mdup-test.sh b/mdup-test.sh
new file mode 100755 (executable)
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+++ b/mdup-test.sh
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+#! /bin/sh
+
+set -e
+: ${test=./mdup.t}
+cases=
+
+###--------------------------------------------------------------------------
+### Set up the test cases.
+###
+### The mdup-test program takes a command-line representation of an mdup_fd
+### array, calls mdup, and checks the result.  In particular, it ensures that
+### the file descriptors returned are the ones asked for, and that the
+### resulting file descriptors actually correspond to the requested files.
+### (It does the latter by comparing inodes before and after.)
+
+## Very simple tests.
+cases="$cases 3:4"
+cases="$cases 4:3"
+
+## Overlapping sources and destinations.
+cases="$cases 4:3,3:5,5:6"
+
+## Repeated sources.
+cases="$cases 3:4,3:3,3:-1"
+cases="$cases 5:8,3:4,3:5,4:6"
+
+## Cycles.
+cases="$cases 5:7,3:4,3:5,4:6,5:3"
+cases="$cases 5:8,3:4,3:5,4:6,5:3"
+
+###--------------------------------------------------------------------------
+### Actually run the tests.
+
+## Initialize counters.
+win=0
+lose=0
+total=0
+
+## Run the tests.
+for case in $cases; do
+  total=$(expr $total + 1)
+  case=$(echo "$case" | sed 'y/,/ /')
+  printf "%d: %-60s  " $total "$case"
+  if $test $case >mdup.$total.out 2>mdup.$total.err; then
+    echo "ok"
+    win=$(expr $win + 1)
+    rm mdup.$total.out mdup.$total.err
+  else
+    echo "FAIL"
+    lose=$(expr $lose + 1)
+  fi
+done
+
+## Announce the outcome.
+if [ $win = $total ]; then
+  echo "All $total tests successful."
+  rc=0
+else
+  echo "FAILED $lose of $total tests."
+  rc=1
+fi
+
+## And exit.
+exit $rc
+
+###----- That's all, folks --------------------------------------------------