issue_comments

test_paginate_using_link_header will be tricky.

The reason the tests are failing is that json_renderer() attempts to populate the link header using data["next_url"] - but that's not present unless ?_extra=next_url has been passed:

https://github.com/simonw/datasette/blob/2f38479dcc81f11a4362f4e28511fa88afc34e61/datasette/renderer.py#L101-L102

But I can only rely on next being present, not next_url.

I thought I could maybe assemble the link header using next, by turning that into a next_url link - but there's some custom logic which kicks in for pagination against SQL views (offset/limit pagination) to calculate the next_url which isn't easily replicable at the json_renderer() layer, in the _next_value_and_url() utility function:

https://github.com/simonw/datasette/blob/2f38479dcc81f11a4362f4e28511fa88afc34e61/datasette/views/table.py#L2275-L2282

Now 25 failures in test_table_api.py: FAILED tests/test_table_api.py::test_expand_labels - assert {'2': {'pk': 2, 'created': '2019-01-14 08:00:00', 'planet_int': 1, 'on_earth': 1, 'state': 'CA', '_city_id': 1, '_neighborhood': 'Dogpatch', 'tags': '["tag1", "tag3"]', 'complex_array'... FAILED tests/test_table_api.py::test_expand_label - AssertionError: assert {'1': {'pk': '1', 'foreign_key_with_label': '1', 'foreign_key_with_blank_label': '3', 'foreign_key_with_no_label': '1', 'foreign_key_compound_pk1': 'a', 'foreign_key_co... FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json-max-age=5] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json?_ttl=invalid-max-age=5] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json?_ttl=10-max-age=10] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json?_ttl=0-no-cache] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_infinity_returned_as_null - AssertionError: assert [{'rowid': 1, 'value': inf}, {'rowid': 2, 'value': -inf}, {'rowid': 3, 'value': 1.5}] == [{'rowid': 1, 'value': None}, {'rowid': 2, 'value': None}, {'rowid': 3, 'value'... FAILED tests/test_table_api.py::test_null_and_compound_foreign_keys_are_not_expanded - AssertionError: assert [{'pk': '1', 'foreign_key_with_label': '1', 'foreign_key_with_blank_label': '3', 'foreign_key_with_no_label': '1', 'foreign_key_compound_pk1': 'a', 'foreign_key_compoun... FAILED tests/test_table_api.py::test_binary_data_in_json[/fixtures/binary_data.json?_shape=array-expected_json0-None] - assert [{'rowid': 1, 'data': "b'\\x15\\x1c\\x02\\xc7\\xad\\x05\\xfe'"}, {'rowid': 2, 'data': "b'\\x15\\x1c\\x03\\xc7\\xad\\x05\\xfe'"}, {'rowid': 3, 'data': None}] == [{'rowid': 1, 'data': {'... FAILED tests/test_table_api.py::test_binary_data_in_json[/fixtures/binary_data.json?_shape=array&_nl=on-None-{"rowid": 1, "data": {"$base64": true, "encoded": "FRwCx60F/g=="}}\n{"rowid": 2, "data": {"$base64": true, "encoded": "FRwDx60F/g=="}}\n{"rowid": 3, "data": null}] - assert '{"ok": false, "error": "Object of type bytes is not JSON serializable", "status": 500, "title": null}' == '{"rowid": 1, "data": {"$base64": true, "encoded": "FRwCx60F/g=="}}\n{"rowid"... FAILED tests/test_table_api.py::test_paginate_using_link_header[] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=arrays] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=arrayfirst] - assert 400 == 200 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=object] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=objects] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=array] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=array&_nl=on] - assert 1 == 21 FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=created-expected_columns0] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_nocol=created-expected_columns1] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=state&_col=created-expected_columns2] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=state&_col=state-expected_columns3] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=state&_col=created&_nocol=created-expected_columns4] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_nocol=state&_facet=state-expected_columns5] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/simple_view.json?_nocol=content-expected_columns6] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/simple_view.json?_col=content-expected_columns7] - KeyError: 'columns' ============================================================================= 25 failed, 86 passed, 1 xfailed in 7.18s =============================================================================

Here are the next set of tests to get passing: % pytest tests/test_table_api.py FAILED tests/test_table_api.py::test_facets[/fixtures/facetable.json?_facet=state&_facet=_city_id-expected_facet_results0] - KeyError: 'name' FAILED tests/test_table_api.py::test_facets[/fixtures/facetable.json?_facet=state&_facet=_city_id&state=MI-expected_facet_results1] - KeyError: 'name' FAILED tests/test_table_api.py::test_facets[/fixtures/facetable.json?_facet=planet_int-expected_facet_results2] - KeyError: 'name' FAILED tests/test_table_api.py::test_facets[/fixtures/facetable.json?_facet=planet_int&planet_int=1-expected_facet_results3] - KeyError: 'name' FAILED tests/test_table_api.py::test_suggested_facets - KeyError: 'suggested_facets' FAILED tests/test_table_api.py::test_allow_facet_off - KeyError: 'suggested_facets' FAILED tests/test_table_api.py::test_suggest_facets_off - KeyError: 'suggested_facets' FAILED tests/test_table_api.py::test_nofacet[True] - KeyError: 'suggested_facets' FAILED tests/test_table_api.py::test_nofacet[False] - KeyError: 'suggested_facets' FAILED tests/test_table_api.py::test_nosuggest[True] - KeyError: 'suggested_facets' FAILED tests/test_table_api.py::test_nosuggest[False] - KeyError: 'suggested_facets' FAILED tests/test_table_api.py::test_nocount[True-None] - KeyError: 'count' FAILED tests/test_table_api.py::test_nocount[False-15] - KeyError: 'count' FAILED tests/test_table_api.py::test_expand_labels - AssertionError: assert {'13': {'_cit...:00:00', ...}} == {'13': {'_cit...:00:00', ...}} FAILED tests/test_table_api.py::test_expand_label - AssertionError: assert {'1': {'forei...l': '1', ...}} == {'1': {'forei...': '1'}, ...}} FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json-max-age=5] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json?_ttl=invalid-max-age=5] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json?_ttl=10-max-age=10] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_ttl_parameter[/fixtures/facetable.json?_ttl=0-no-cache] - KeyError: 'Cache-Control' FAILED tests/test_table_api.py::test_infinity_returned_as_null - AssertionError: assert [{'rowid': 1,...'value': 1.5}] == [{'rowid': 1,...'value': 1.5}] FAILED tests/test_table_api.py::test_null_and_compound_foreign_keys_are_not_expanded - AssertionError: assert [{'foreign_ke...': None, ...}] == [{'foreign_ke...': None, ...}] FAILED tests/test_table_api.py::test_binary_data_in_json[/fixtures/binary_data.json?_shape=array-expected_json0-None] - assert [{'data': "b'..., 'rowid': 3}] == [{'data': {'$..., 'rowid': 3}] FAILED tests/test_table_api.py::test_binary_data_in_json[/fixtures/binary_data.json?_shape=array&_nl=on-None-{"rowid": 1, "data": {"$base64": true, "encoded": "FRwCx60F/g=="}}\n{"rowid": 2, "data": {"$base64": true, "encoded": "FRwDx60F/g=="}}\n{"rowid": 3, "data": null}] - assert '{"ok": false...title": null}' == '{"rowid": 1,..."data": null}' FAILED tests/test_table_api.py::test_paginate_using_link_header[] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=arrays] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=arrayfirst] - assert 400 == 200 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=object] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=objects] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=array] - assert 1 == 21 FAILED tests/test_table_api.py::test_paginate_using_link_header[?_shape=array&_nl=on] - assert 1 == 21 FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=created-expected_columns0] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_nocol=created-expected_columns1] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=state&_col=created-expected_columns2] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=state&_col=state-expected_columns3] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_col=state&_col=created&_nocol=created-expected_columns4] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/facetable.json?_nocol=state&_facet=state-expected_columns5] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/simple_view.json?_nocol=content-expected_columns6] - KeyError: 'columns' FAILED tests/test_table_api.py::test_col_nocol[/fixtures/simple_view.json?_col=content-expected_columns7] - KeyError: 'columns' ============================================================================= 38 failed, 73 passed, 1 xfailed in 7.25s =============================================================================