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.)

import os
import sys
import test_util
import unittest

from mercurial import hg
from mercurial import commands
from mercurial import util


class TestSvnPreCommitHooks(test_util.TestBase):
    def setUp(self):
        super(TestSvnPreCommitHooks, self).setUp()
        self.repo_path = self.load_and_fetch('single_rev.svndump')[1]
        # creating pre-commit hook that doesn't allow any commit
        hook_file_name = os.path.join(
			self.repo_path, 'hooks', 'pre-commit'
        )
        hook_file = open(hook_file_name, 'w')
        hook_file.write(
        	'#!/bin/sh\n'
        	'echo "Commits are not allowed" >&2; exit 1;\n'
        )
        hook_file.close()
        os.chmod(hook_file_name, 0755)

    def test_push_with_pre_commit_hooks(self):
        changes = [('narf/a', 'narf/a', 'ohai',),
                   ]
        self.commitchanges(changes)
        self.assertRaises(util.Abort, self.pushrevisions)