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from __future__ import with_statement
import sys
import os
import subprocess
from os.path import exists, join, abspath
from shutil import rmtree
from tempfile import mkdtemp
from twisted.trial import unittest
class ProjectTest(unittest.TestCase):
project_name = 'testproject'
def setUp(self):
self.temp_path = mkdtemp()
self.cwd = self.temp_path
self.proj_path = join(self.temp_path, self.project_name)
self.proj_mod_path = join(self.proj_path, self.project_name)
self.env = os.environ.copy()
if 'PYTHONPATH' in os.environ:
self.env['PYTHONPATH'] = os.environ['PYTHONPATH']
def tearDown(self):
rmtree(self.temp_path)
def call(self, *new_args, **kwargs):
out = os.tmpfile()
args = (sys.executable, '-m', 'scrapy.cmdline') + new_args
return subprocess.call(args, stdout=out, stderr=out, cwd=self.cwd, \
env=self.env, **kwargs)
def proc(self, *new_args, **kwargs):
args = (sys.executable, '-m', 'scrapy.cmdline') + new_args
return subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, \
cwd=self.cwd, env=self.env, **kwargs)
class StartprojectTest(ProjectTest):
def test_startproject(self):
self.assertEqual(0, self.call('startproject', self.project_name))
assert exists(join(self.proj_path, 'scrapy.cfg'))
assert exists(join(self.proj_path, 'testproject'))
assert exists(join(self.proj_mod_path, '__init__.py'))
assert exists(join(self.proj_mod_path, 'items.py'))
assert exists(join(self.proj_mod_path, 'pipelines.py'))
assert exists(join(self.proj_mod_path, 'settings.py'))
assert exists(join(self.proj_mod_path, 'spiders', '__init__.py'))
self.assertEqual(1, self.call('startproject', self.project_name))
self.assertEqual(1, self.call('startproject', 'wrong---project---name'))
class CommandTest(ProjectTest):
def setUp(self):
super(CommandTest, self).setUp()
self.call('startproject', self.project_name)
self.cwd = join(self.temp_path, self.project_name)
self.env['SCRAPY_SETTINGS_MODULE'] = '%s.settings' % self.project_name
class GenspiderCommandTest(CommandTest):
def test_arguments(self):
# only pass one argument. spider script shouldn't be created
self.assertEqual(2, self.call('genspider', 'test_name'))
assert not exists(join(self.proj_mod_path, 'spiders', 'test_name.py'))
# pass two arguments <name> <domain>. spider script should be created
self.assertEqual(0, self.call('genspider', 'test_name', 'test.com'))
assert exists(join(self.proj_mod_path, 'spiders', 'test_name.py'))
def test_template(self, tplname='crawl'):
args = ['--template=%s' % tplname] if tplname else []
spname = 'test_spider'
p = self.proc('genspider', spname, 'test.com', *args)
out = p.stdout.read()
self.assert_("Created spider %r using template %r in module" % (spname, tplname) in out)
self.assert_(exists(join(self.proj_mod_path, 'spiders', 'test_spider.py')))
p = self.proc('genspider', spname, 'test.com', *args)
out = p.stdout.read()
self.assert_("Spider %r already exists in module" % spname in out)
def test_template_basic(self):
self.test_template('basic')
def test_template_csvfeed(self):
self.test_template('csvfeed')
def test_template_xmlfeed(self):
self.test_template('xmlfeed')
def test_list(self):
self.assertEqual(0, self.call('genspider', '--list'))
def test_dump(self):
self.assertEqual(0, self.call('genspider', '--dump=basic'))
self.assertEqual(0, self.call('genspider', '-d', 'basic'))
class MiscCommandsTest(CommandTest):
def test_list(self):
self.assertEqual(0, self.call('list'))
class RunSpiderCommandTest(CommandTest):
def test_runspider(self):
tmpdir = self.mktemp()
os.mkdir(tmpdir)
fname = abspath(join(tmpdir, 'myspider.py'))
with open(fname, 'w') as f:
f.write("""
from scrapy import log
from scrapy.spider import BaseSpider
class MySpider(BaseSpider):
name = 'myspider'
def start_requests(self):
self.log("It Works!")
return []
""")
p = self.proc('runspider', fname)
log = p.stderr.read()
self.assert_("[myspider] DEBUG: It Works!" in log)
self.assert_("[myspider] INFO: Spider opened" in log)
self.assert_("[myspider] INFO: Closing spider (finished)" in log)
self.assert_("[myspider] INFO: Spider closed (finished)" in log)
def test_runspider_no_spider_found(self):
tmpdir = self.mktemp()
os.mkdir(tmpdir)
fname = abspath(join(tmpdir, 'myspider.py'))
with open(fname, 'w') as f:
f.write("""
from scrapy import log
from scrapy.spider import BaseSpider
""")
p = self.proc('runspider', fname)
log = p.stderr.read()
self.assert_("No spider found in file" in log)
def test_runspider_file_not_found(self):
p = self.proc('runspider', 'some_non_existent_file')
log = p.stderr.read()
self.assert_("File not found: some_non_existent_file" in log)
def test_runspider_unable_to_load(self):
tmpdir = self.mktemp()
os.mkdir(tmpdir)
fname = abspath(join(tmpdir, 'myspider.txt'))
with open(fname, 'w') as f:
f.write("")
p = self.proc('runspider', fname)
log = p.stderr.read()
self.assert_("Unable to load" in log)
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