| #!/usr/bin/env python |
| # Copyright 2013 Google Inc. All Rights Reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| import script_injector |
| import unittest |
| |
| |
| LONG_COMMENT = '<!--%s-->' % ('comment,' * 200) |
| SCRIPT_TO_INJECT = 'var flag = 0;' |
| EXPECTED_SCRIPT = '<script>%s</script>' % SCRIPT_TO_INJECT |
| TEXT_HTML = 'text/html' |
| TEXT_CSS = 'text/css' |
| APPLICATION = 'application/javascript' |
| |
| TEMPLATE_HEAD = '<!doctype html><html><head>%s</head><body></body></html>' |
| TEMPLATE_HTML = '<!doctype html><html>%s<body></body></html>' |
| TEMPLATE_DOCTYPE = '<!doctype html>%s<body></body>' |
| TEMPLATE_RAW = '%s<body></body>' |
| TEMPLATE_COMMENT = '%s<!doctype html>%s<html>%s<head>%s</head></html>' |
| |
| |
| class ScriptInjectorTest(unittest.TestCase): |
| |
| def test_unsupported_content_type(self): |
| source = 'abc' |
| # CSS. |
| new_source, already_injected = script_injector.InjectScript( |
| source, TEXT_CSS, SCRIPT_TO_INJECT) |
| self.assertEqual(new_source, source) |
| self.assertFalse(already_injected) |
| # Javascript. |
| new_source, already_injected = script_injector.InjectScript( |
| source, APPLICATION, SCRIPT_TO_INJECT) |
| self.assertEqual(new_source, source) |
| self.assertFalse(already_injected) |
| |
| def test_empty_content_as_already_injected(self): |
| source, already_injected = script_injector.InjectScript( |
| '', TEXT_HTML, SCRIPT_TO_INJECT) |
| self.assertEqual(source, '') |
| self.assertTrue(already_injected) |
| |
| def test_already_injected(self): |
| source, already_injected = script_injector.InjectScript( |
| TEMPLATE_HEAD % EXPECTED_SCRIPT, TEXT_HTML, SCRIPT_TO_INJECT) |
| self.assertEqual(source, TEMPLATE_HEAD % EXPECTED_SCRIPT) |
| self.assertTrue(already_injected) |
| |
| def _assert_successful_injection(self, template): |
| source, already_injected = script_injector.InjectScript( |
| template % '', TEXT_HTML, SCRIPT_TO_INJECT) |
| self.assertEqual(source, template % EXPECTED_SCRIPT) |
| self.assertFalse(already_injected) |
| |
| def test_normal(self): |
| self._assert_successful_injection(TEMPLATE_HEAD) |
| |
| def test_no_head_tag(self): |
| self._assert_successful_injection(TEMPLATE_HTML) |
| |
| def test_no_head_and_html_tag(self): |
| self._assert_successful_injection(TEMPLATE_DOCTYPE) |
| |
| def test_no_head_html_and_doctype_tag(self): |
| self._assert_successful_injection(TEMPLATE_RAW) |
| |
| def _assert_successful_injection_with_comment(self, before_doctype, |
| after_doctype, after_html): |
| source, already_injected = script_injector.InjectScript( |
| TEMPLATE_COMMENT % (before_doctype, after_doctype, after_html, ''), |
| TEXT_HTML, SCRIPT_TO_INJECT) |
| expected_source = TEMPLATE_COMMENT % (before_doctype, after_doctype, |
| after_html, EXPECTED_SCRIPT) |
| self.assertEqual(source, expected_source) |
| self.assertFalse(already_injected) |
| |
| def test_comment_before_doctype(self): |
| self._assert_successful_injection_with_comment(LONG_COMMENT, '', '') |
| |
| def test_comment_after_doctype(self): |
| self._assert_successful_injection_with_comment('', LONG_COMMENT, '') |
| |
| def test_comment_after_html(self): |
| self._assert_successful_injection_with_comment('', '', LONG_COMMENT) |
| |
| def test_all_comments(self): |
| self._assert_successful_injection_with_comment( |
| LONG_COMMENT, LONG_COMMENT, LONG_COMMENT) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |
