tests/test-highlight

Fix memory leak when using hg commands over http repositories

When using hg commands over an http repository in a long running process, a
httphandler instance is leaked for each command, because of a loop
handler.parent -> OpenerDirector and OpenerDirector.handlers -> handler which
is not handled by Python's gc. Discussion on #mercurial concluded that removing
the __del__ method solved the problem.

#!/bin/sh

"$TESTDIR/hghave" pygments || exit 80

cat <<EOF >> $HGRCPATH
[extensions]
highlight =
[web]
pygments_style = friendly
EOF

hg init test
cd test
# create random Python file to exercise Pygments
cat <<EOF > primes.py
#!/usr/bin/env python

"""Fun with generators. Corresponding Haskell implementation:

primes = 2 : sieve [3, 5..]
    where sieve (p:ns) = p : sieve [n | n <- ns, mod n p /= 0]
"""

from itertools import dropwhile, ifilter, islice, count, chain

def primes():
    """Generate all primes."""
    def sieve(ns):
        p = ns.next()
        # It is important to yield *here* in order to stop the
        # infinite recursion.
        yield p
        ns = ifilter(lambda n: n % p != 0, ns)
        for n in sieve(ns):
            yield n

    odds = ifilter(lambda i: i % 2 == 1, count())
    return chain([2], sieve(dropwhile(lambda n: n < 3, odds)))

if __name__ == "__main__":
    import sys
    try:
        n = int(sys.argv[1])
    except (ValueError, IndexError):
        n = 10
    p = primes()
    print "The first %d primes: %s" % (n, list(islice(p, n)))
EOF

hg ci -Ama

echo % hg serve
hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
cat hg.pid >> $DAEMON_PIDS

echo % hgweb filerevision, html
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/file/tip/primes.py') \
    | sed "s/class=\"k\"/class=\"kn\"/g" | sed "s/class=\"mf\"/class=\"mi\"/g"

echo % hgweb fileannotate, html
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/annotate/tip/primes.py') \
    | sed "s/class=\"k\"/class=\"kn\"/g" | sed "s/class=\"mi\"/class=\"mf\"/g"

echo % hgweb fileannotate, raw
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/annotate/tip/primes.py?style=raw') \
    | sed "s/test@//" > a

echo "200 Script output follows" > b
echo "" >> b
echo "" >> b
hg annotate "primes.py" >> b
echo "" >> b
echo "" >> b
echo "" >> b
echo "" >> b

diff -u b a

echo
echo % hgweb filerevision, raw
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/file/tip/primes.py?style=raw') \
    > a

echo "200 Script output follows" > b
echo "" >> b
hg cat primes.py >> b

diff -u b a

echo
echo % hgweb highlightcss friendly
"$TESTDIR/get-with-headers.py" localhost:$HGPORT '/highlightcss' > out
head -n 4 out
rm out

echo % errors encountered
cat errors.log
"$TESTDIR/killdaemons.py"

# Change the pygments style
cat > .hg/hgrc <<EOF
[web]
pygments_style = fruity
EOF

echo % hg serve again
hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
cat hg.pid >> $DAEMON_PIDS

echo % hgweb highlightcss fruity
"$TESTDIR/get-with-headers.py" localhost:$HGPORT '/highlightcss' > out
head -n 4 out
rm out

echo % errors encountered
cat errors.log

cd ..
hg init eucjp
cd eucjp

python -c 'print("\265\376")' >> eucjp.txt  # Japanese kanji "Kyo"

hg ci -Ama

hgserveget () {
    "$TESTDIR/killdaemons.py"
    echo % HGENCODING="$1" hg serve
    HGENCODING="$1" hg serve -p $HGPORT -d -n test --pid-file=hg.pid -E errors.log
    cat hg.pid >> $DAEMON_PIDS

    echo % hgweb filerevision, html
    "$TESTDIR/get-with-headers.py" localhost:$HGPORT "/file/tip/$2" \
        | grep '<div class="parity0 source">' | $TESTDIR/printrepr.py
    echo % errors encountered
    cat errors.log
}

hgserveget euc-jp eucjp.txt
hgserveget utf-8 eucjp.txt
hgserveget us-ascii eucjp.txt