diff options
| -rw-r--r-- | changelog.d/8883.bugfix | 1 | ||||
| -rw-r--r-- | synapse/rest/media/v1/preview_url_resource.py | 6 | ||||
| -rw-r--r-- | tests/test_preview.py | 27 |
3 files changed, 22 insertions, 12 deletions
diff --git a/changelog.d/8883.bugfix b/changelog.d/8883.bugfix new file mode 100644 index 0000000000..6137fc5b2b --- /dev/null +++ b/changelog.d/8883.bugfix @@ -0,0 +1 @@ +Fix a 500 error when attempting to preview an empty HTML file. diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py index dce6c4d168..1082389d9b 100644 --- a/synapse/rest/media/v1/preview_url_resource.py +++ b/synapse/rest/media/v1/preview_url_resource.py @@ -676,7 +676,11 @@ class PreviewUrlResource(DirectServeJsonResource): logger.debug("No media removed from url cache") -def decode_and_calc_og(body, media_uri, request_encoding=None): +def decode_and_calc_og(body, media_uri, request_encoding=None) -> Dict[str, str]: + # If there's no body, nothing useful is going to be found. + if not body: + return {} + from lxml import etree try: diff --git a/tests/test_preview.py b/tests/test_preview.py index 7f67ee9e1f..a883d707df 100644 --- a/tests/test_preview.py +++ b/tests/test_preview.py @@ -56,7 +56,7 @@ class PreviewTestCase(unittest.TestCase): desc = summarize_paragraphs(example_paras, min_size=200, max_size=500) - self.assertEquals( + self.assertEqual( desc, "Tromsø (Norwegian pronunciation: [ˈtrʊmsœ] ( listen); Northern Sami:" " Romsa; Finnish: Tromssa[2] Kven: Tromssa) is a city and municipality in" @@ -69,7 +69,7 @@ class PreviewTestCase(unittest.TestCase): desc = summarize_paragraphs(example_paras[1:], min_size=200, max_size=500) - self.assertEquals( + self.assertEqual( desc, "Tromsø lies in Northern Norway. The municipality has a population of" " (2015) 72,066, but with an annual influx of students it has over 75,000" @@ -96,7 +96,7 @@ class PreviewTestCase(unittest.TestCase): desc = summarize_paragraphs(example_paras, min_size=200, max_size=500) - self.assertEquals( + self.assertEqual( desc, "Tromsø (Norwegian pronunciation: [ˈtrʊmsœ] ( listen); Northern Sami:" " Romsa; Finnish: Tromssa[2] Kven: Tromssa) is a city and municipality in" @@ -122,7 +122,7 @@ class PreviewTestCase(unittest.TestCase): ] desc = summarize_paragraphs(example_paras, min_size=200, max_size=500) - self.assertEquals( + self.assertEqual( desc, "Tromsø (Norwegian pronunciation: [ˈtrʊmsœ] ( listen); Northern Sami:" " Romsa; Finnish: Tromssa[2] Kven: Tromssa) is a city and municipality in" @@ -149,7 +149,7 @@ class PreviewUrlTestCase(unittest.TestCase): og = decode_and_calc_og(html, "http://example.com/test.html") - self.assertEquals(og, {"og:title": "Foo", "og:description": "Some text."}) + self.assertEqual(og, {"og:title": "Foo", "og:description": "Some text."}) def test_comment(self): html = """ @@ -164,7 +164,7 @@ class PreviewUrlTestCase(unittest.TestCase): og = decode_and_calc_og(html, "http://example.com/test.html") - self.assertEquals(og, {"og:title": "Foo", "og:description": "Some text."}) + self.assertEqual(og, {"og:title": "Foo", "og:description": "Some text."}) def test_comment2(self): html = """ @@ -182,7 +182,7 @@ class PreviewUrlTestCase(unittest.TestCase): og = decode_and_calc_og(html, "http://example.com/test.html") - self.assertEquals( + self.assertEqual( og, { "og:title": "Foo", @@ -203,7 +203,7 @@ class PreviewUrlTestCase(unittest.TestCase): og = decode_and_calc_og(html, "http://example.com/test.html") - self.assertEquals(og, {"og:title": "Foo", "og:description": "Some text."}) + self.assertEqual(og, {"og:title": "Foo", "og:description": "Some text."}) def test_missing_title(self): html = """ @@ -216,7 +216,7 @@ class PreviewUrlTestCase(unittest.TestCase): og = decode_and_calc_og(html, "http://example.com/test.html") - self.assertEquals(og, {"og:title": None, "og:description": "Some text."}) + self.assertEqual(og, {"og:title": None, "og:description": "Some text."}) def test_h1_as_title(self): html = """ @@ -230,7 +230,7 @@ class PreviewUrlTestCase(unittest.TestCase): og = decode_and_calc_og(html, "http://example.com/test.html") - self.assertEquals(og, {"og:title": "Title", "og:description": "Some text."}) + self.assertEqual(og, {"og:title": "Title", "og:description": "Some text."}) def test_missing_title_and_broken_h1(self): html = """ @@ -244,4 +244,9 @@ class PreviewUrlTestCase(unittest.TestCase): og = decode_and_calc_og(html, "http://example.com/test.html") - self.assertEquals(og, {"og:title": None, "og:description": "Some text."}) + self.assertEqual(og, {"og:title": None, "og:description": "Some text."}) + + def test_empty(self): + html = "" + og = decode_and_calc_og(html, "http://example.com/test.html") + self.assertEqual(og, {}) |