Memoize: fix test timing

NB: this distro is upstream-CPAN, but there hasn't been a new release in
7 years, so I'm patching this intermittently false positive test
directly in blead.

I reported this issue 4 years ago as

    https://rt.cpan.org/Public/Bug/Display.html?id=108382

cpan/Memoize/t/speed.t occasionally fails tests 2 and 5 in bleadperl
smokes.

This is because the time deltas (using "time") have a granularity of 1
sec. The basic test is: run fib() for at least 10 secs, then run again
with memoize and check that it takes less than 1/10th of that time.

However, the first measurement may be exactly 10 secs, while the second
run (no matter how speedy) may be 1 sec if it passes over a tick
boundary. 0.001 is then added to it to avoid division by zero.

The test is ($ELAPSED/$ELAPSED2 > 10).  With $ELAPSED = 10 and
$ELAPSED2 = 1.001, the test fails. The easy fix is to run for at least
11 secs rather than 10.

1 files changed, 4 insertions, 3 deletions

diff --git a/cpan/Memoize/t/speed.t b/cpan/Memoize/t/speed.t
index 6d21906573..c4b838192d 100644
--- a/cpan/Memoize/t/speed.t
+++ b/cpan/Memoize/t/speed.t
@@ -56,7 +56,7 @@ $N = 1;
 
 $ELAPSED = 0;
 
-my $LONG_RUN = 10;
+my $LONG_RUN = 11;
 
 while (1) {
   my $start = time;
@@ -88,10 +88,11 @@ $COUNT=0;
 $start = time;
 $RESULT2 = fib($N);
 $ELAPSED2 = time - $start + .001; # prevent division by 0 errors
-
 print (($RESULT == $RESULT2) ? "ok 1\n" : "not ok 1\n");
 # If it's not ten times as fast, something is seriously wrong.
+print "# ELAPSED2=$ELAPSED2 seconds.\n";
 print (($ELAPSED/$ELAPSED2 > 10) ? "ok 2\n" : "not ok 2\n");
+
 # If it called the function more than $N times, it wasn't memoized properly
 print (($COUNT > $N) ? "ok 3\n" : "not ok 3\n");
 
@@ -100,8 +101,8 @@ $COUNT = 0;
 $start = time;
 $RESULT2 = fib($N);
 $ELAPSED2 = time - $start + .001; # prevent division by 0 errors
-
 print (($RESULT == $RESULT2) ? "ok 4\n" : "not ok 4\n");
+print "# ELAPSED2=$ELAPSED2 seconds.\n";
 print (($ELAPSED/$ELAPSED2 > 10) ? "ok 5\n" : "not ok 5\n");
 # This time it shouldn't have called the function at all.
 print ($COUNT == 0 ? "ok 6\n" : "not ok 6\n");