tests: optimise creating repositories and loading dumps Previously, we'd use svnadmin for creating repositories and loading dumps. That tends to be a bit slow, as it forks a new process and loads the Subversion libraries into it. Instead, we extend our existing Subversion wrappers and load the dumps using the API. This is a noticable speedup. The only downside is that we rely on Subversion and Subvertpy to correctly close all file descriptors; an assumption which hasn't always held in the past. I ran some benchmarks on my relatively slow Mac with $TMPDIR on a ramdisk, and they showed a significant change: I compared ten runs of each with Subvertpy: min: -18.8% (299.1s -> 243.0s) median: -20.0% (307.1s -> 245.6s) ...and three runs of each with SWIG: min: -22.8% (368.7s -> 284.7s) median: -25.7% (384.4s -> 285.5s) (Since the timing measures wall clock time, the minimum time is likely to be the most accurate and useful measurement.)

#!/bin/sh
#
# Create emptyrepo2.svndump
#
# The generated repository contains a sequence of empty revisions
# created with a combination of svnsync and filtering

mkdir temp
cd temp

mkdir project-orig
cd project-orig
mkdir -p sub/trunk other
echo a > other/a
cd ..

svnadmin create testrepo
svnurl=file://`pwd`/testrepo
svn import project-orig $svnurl -m init

svn co $svnurl project
cd project
echo a >> other/a
svn ci -m othera
echo a >> other/a
svn ci -m othera2
echo b > sub/trunk/a
svn add sub/trunk/a
svn ci -m adda
cd ..

svnadmin create testrepo2
cat > testrepo2/hooks/pre-revprop-change <<EOF
#!/bin/sh
exit 0
EOF
chmod +x testrepo2/hooks/pre-revprop-change

svnurl2=file://`pwd`/testrepo2
svnsync init --username svnsync $svnurl2 $svnurl/sub
svnsync sync $svnurl2

svnadmin dump testrepo2 > ../emptyrepo2.svndump