Fixes 4784 - Improve error reporting in updateMalwareDomainsList and add tests

sitescripts/subscriptions/test/test_updateMalwareDomainsList.py

Index: sitescripts/subscriptions/test/test_updateMalwareDomainsList.py
===================================================================
new file mode 100644
--- /dev/null
+++ b/sitescripts/subscriptions/test/test_updateMalwareDomainsList.py
@@ -0,0 +1,95 @@
+# This file is part of the Adblock Plus web scripts,
+# Copyright (C) 2006-2016 Eyeo GmbH
+#
+# Adblock Plus is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# Adblock Plus is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+
+import io
+import ConfigParser
+import subprocess
+import urllib2
+import zipfile
+
+import pytest
+
+from sitescripts.subscriptions.bin.updateMalwareDomainsList import main
+
+CONF_SECTION = 'subscriptionDownloads'
+
+
+@pytest.fixture(autouse=True)
+def md_repo(tmpdir):
+    """A mock of our malware domains repo"""
+    repo_dir = tmpdir.mkdir('md_repo')
+    repo_dir.join('foo').write('foo')
+    subprocess.check_call(['hg', 'init'], cwd=repo_dir.strpath)
+    subprocess.check_call(['hg', 'commit', '-q', '-m', 'foo', '-A'],
+                          cwd=repo_dir.strpath)
+    return repo_dir
+
+
+@pytest.fixture(autouse=True)
+def config(mocker, md_repo):
+    """A mock of sitescripts config"""
+    config = ConfigParser.ConfigParser()
+    config.add_section(CONF_SECTION)
+    config.set(CONF_SECTION, 'malwaredomains_repository', md_repo.strpath)
+    config.set(CONF_SECTION, 'malwaredomains_mirrors', 'good')
+    module = 'sitescripts.subscriptions.bin.updateMalwareDomainsList'
+    mocker.patch(module + '.get_config', lambda: config)
+    return config
+
+
+@pytest.fixture(autouse=True)
+def urlopen(mocker):
+    """Mock urlopen function"""
+    real_urlopen = urllib2.urlopen
+
+    def mock_urlopen(url):
+        if url.startswith('good'):
+            zf_data = io.BytesIO()
+            with zipfile.ZipFile(zf_data, 'w') as zf:
+                zf.writestr('justdomains', 'success\n')
+            return io.BytesIO(zf_data.getvalue())
+        if url.startswith('bad') or url.startswith('ugly'):
+            raise urllib2.URLError('Bad')
+        return real_urlopen(url)
+
+    mocker.patch('urllib2.urlopen', mock_urlopen)
+
+
+def test_good(md_repo):
+    main()
+    subprocess.check_call(['hg', 'up'], cwd=md_repo.strpath)
+    result = md_repo.join('malwaredomains_full.txt').read()
+    assert 'success' in result
+
+
+def test_bad(md_repo, config):
+    config.set(CONF_SECTION, 'malwaredomains_mirrors', 'bad')
+    try:
+        main()
+    except SystemExit as exc:
+        err_lines = str(exc).splitlines()
+        assert len(err_lines) == 3
+        assert 'Failed to fetch bad/files/justdomains.zip' in err_lines[2]
+
+
+def test_ugly(md_repo, config):
+    config.set(CONF_SECTION, 'malwaredomains_mirrors', 'bad\nugly')
+    try:
+        main()
+    except SystemExit as exc:
+        err_lines = str(exc).splitlines()
+        assert len(err_lines) == 4
+        assert 'Failed to fetch bad/files/justdomains.zip' in err_lines[2]
+        assert 'Failed to fetch ugly/files/justdomains.zip' in err_lines[3]