add more test cases

14 files changed, 5357 insertions, 6 deletions

diff --git a/tests/data/README.md b/tests/data/README.md
index 4788f1b..42ea394 100644
--- a/tests/data/README.md
+++ b/tests/data/README.md
@@ -15,3 +15,41 @@ If you add lines to this file, the test suite will pick it up automatically.
 7kzrmoajzzedxgdvbltgqihszu,bd4crw4p7ber7pzhpoyw2c77bi,Status.STRONG,OK.SLUG_TITLE_AUTHOR_MATCH,
 ```
 
+## Helpers
+
+Going from a query to the combination of idents (with
+[esdump](https://github.com/miku/esdump), [jq](https://stedolan.github.io/jq/),
+[makecomb.py](https://gist.github.com/miku/c1220715060babc2374a440bd742a410):
+
+```
+$ esdump -q '"Calcifying+extracellular+mucus+substances"' | \
+    jq -rC '.hits.hits[]._id' | makecomb.py | awk '{print $1","$2}'
+
+5lk635o65nc2tnkus3pkf2ggeq,hqrvhbvocvaabg6nr5p43tl3uq
+5lk635o65nc2tnkus3pkf2ggeq,zfwf3tefajc6zdxa47vgilm7wm
+hqrvhbvocvaabg6nr5p43tl3uq,zfwf3tefajc6zdxa47vgilm7wm
+```
+
+Where `makecomb.py` turns lines into pairs.
+
+```
+$ curl -sL https://git.io/JkDwC > ~/bin/makecomb.py && chmod +x ~/bin/makecomb.py
+```
+
+Short script.
+
+```python
+#!/usr/bin/env python
+import fileinput
+import itertools
+
+vs = set()
+for line in fileinput.input():
+    line = line.strip()
+    if not line:
+        continue
+    vs.add(line)
+
+for a, b in itertools.combinations(sorted(vs), r=2):
+    print("{}\t{}".format(a, b))
+```
diff --git a/tests/data/release/2gpvznjjcfbmhats6ot2vsodju b/tests/data/release/2gpvznjjcfbmhats6ot2vsodju
new file mode 100644
index 0000000..6c059f4
--- /dev/null
+++ b/tests/data/release/2gpvznjjcfbmhats6ot2vsodju
@@ -0,0 +1,528 @@
+{
+  "abstracts": [],
+  "container_id": "svonp2abyrgxpazsjvkpnfeiou",
+  "contribs": [
+    {
+      "extra": {
+        "seq": "first"
+      },
+      "index": 0,
+      "raw_name": "Janet Fulk",
+      "role": "author"
+    },
+    {
+      "index": 1,
+      "raw_name": "Andrew J. Flanagin",
+      "role": "author"
+    },
+    {
+      "index": 2,
+      "raw_name": "Michael E. Kalman",
+      "role": "author"
+    },
+    {
+      "index": 3,
+      "raw_name": "Peter R. Monge",
+      "role": "author"
+    },
+    {
+      "index": 4,
+      "raw_name": "Timothy Ryan",
+      "role": "author"
+    }
+  ],
+  "ext_ids": {
+    "doi": "10.1111/j.1468-2885.1996.tb00120.x",
+    "wikidata_qid": "Q56386454"
+  },
+  "extra": {
+    "crossref": {
+      "alternative-id": [
+        "10.1111/j.1468-2885.1996.tb00120.x"
+      ],
+      "type": "journal-article"
+    }
+  },
+  "ident": "2gpvznjjcfbmhats6ot2vsodju",
+  "language": "en",
+  "pages": "60-87",
+  "publisher": "Oxford University Press (OUP)",
+  "refs": [
+    {
+      "container_name": "The knowledge link: How firms compete through strategic alliances",
+      "extra": {
+        "authors": [
+          "Badaracco J. L."
+        ],
+        "volume-title": "The knowledge link: How firms compete through strategic alliances"
+      },
+      "index": 0,
+      "key": "b1_160",
+      "year": 1991
+    },
+    {
+      "container_name": "Group process, group decision, group action",
+      "extra": {
+        "authors": [
+          "Baron R. S."
+        ],
+        "volume-title": "Group process, group decision, group action"
+      },
+      "index": 1,
+      "key": "b2_161",
+      "year": 1992
+    },
+    {
+      "container_name": "Rational man and irrational society",
+      "extra": {
+        "authors": [
+          "Barry B."
+        ],
+        "volume-title": "Rational man and irrational society"
+      },
+      "index": 2,
+      "key": "b3_162",
+      "year": 1982
+    },
+    {
+      "container_name": "Communication and organizations: An interpretive approach",
+      "extra": {
+        "authors": [
+          "Bormann E. G."
+        ],
+        "volume-title": "Communication and organizations: An interpretive approach"
+      },
+      "index": 3,
+      "key": "b4_163",
+      "locator": "99",
+      "year": 1983
+    },
+    {
+      "container_name": "Globalization, technology, and competition: The fusion of computers and telecommunications in the 1990s",
+      "extra": {
+        "authors": [
+          "Bradley S. P."
+        ],
+        "volume-title": "Globalization, technology, and competition: The fusion of computers and telecommunications in the 1990s"
+      },
+      "index": 4,
+      "key": "b5_164",
+      "year": 1993
+    },
+    {
+      "container_name": "Drugs, crime, and the justice system",
+      "extra": {
+        "authors": [
+          "Bureau of Justice Statistics"
+        ],
+        "volume-title": "Drugs, crime, and the justice system"
+      },
+      "index": 5,
+      "key": "b6_165",
+      "year": 1992
+    },
+    {
+      "container_name": "Multijurisdictional drug enforcement strategies: Reducing supply and demand",
+      "extra": {
+        "authors": [
+          "Chaiken J."
+        ],
+        "volume-title": "Multijurisdictional drug enforcement strategies: Reducing supply and demand"
+      },
+      "index": 6,
+      "key": "b7_166",
+      "year": 1990
+    },
+    {
+      "container_name": "Political Science Review",
+      "extra": {
+        "authors": [
+          "Chamberlain J."
+        ],
+        "volume": "68"
+      },
+      "index": 7,
+      "key": "b8_167",
+      "locator": "707",
+      "year": 1974
+    },
+    {
+      "extra": {
+        "doi": "10.2307/2392088"
+      },
+      "index": 8,
+      "key": "b9_168"
+    },
+    {
+      "container_name": "Organizations and communication technology",
+      "extra": {
+        "authors": [
+          "Connolly T."
+        ],
+        "doi": "10.4135/9781483325385.n10",
+        "volume-title": "Organizations and communication technology"
+      },
+      "index": 9,
+      "key": "b10_169",
+      "locator": "219",
+      "year": 1990
+    },
+    {
+      "container_name": "Macro-micro linkages in sociology",
+      "extra": {
+        "authors": [
+          "Cook K. S."
+        ],
+        "volume-title": "Macro-micro linkages in sociology"
+      },
+      "index": 10,
+      "key": "b11_170",
+      "locator": "29",
+      "year": 1991
+    },
+    {
+      "container_name": "Morality, rationality. and efficiency: Perspectives on socio-economics",
+      "extra": {
+        "authors": [
+          "Dawes R. M."
+        ],
+        "volume": "1990",
+        "volume-title": "Morality, rationality. and efficiency: Perspectives on socio-economics"
+      },
+      "index": 11,
+      "key": "b12_171",
+      "locator": "17",
+      "year": 1991
+    },
+    {
+      "container_name": "Social exchange theory: The two traditions",
+      "extra": {
+        "authors": [
+          "Ekeh P. P."
+        ],
+        "volume-title": "Social exchange theory: The two traditions"
+      },
+      "index": 12,
+      "key": "b13_172",
+      "year": 1974
+    },
+    {
+      "container_name": "Management Science",
+      "extra": {
+        "authors": [
+          "Flood M."
+        ]
+      },
+      "index": 13,
+      "key": "b14_173",
+      "year": 1958
+    },
+    {
+      "container_name": "Journal of Change Management",
+      "extra": {
+        "authors": [
+          "Fulk J."
+        ],
+        "doi": "10.1108/eb025597"
+      },
+      "index": 14,
+      "key": "b15_174",
+      "locator": "21",
+      "year": 1988
+    },
+    {
+      "container_name": "Communication and class struggle",
+      "extra": {
+        "authors": [
+          "Habermas J."
+        ],
+        "volume-title": "Communication and class struggle"
+      },
+      "index": 15,
+      "key": "b16_175",
+      "locator": "198",
+      "year": 1979
+    },
+    {
+      "container_name": "Communication and organizational control: Cybernetics in health and welfare organizations",
+      "extra": {
+        "authors": [
+          "Hage J."
+        ],
+        "volume-title": "Communication and organizational control: Cybernetics in health and welfare organizations"
+      },
+      "index": 16,
+      "key": "b17_176",
+      "year": 1974
+    },
+    {
+      "container_name": "Collective action",
+      "extra": {
+        "authors": [
+          "Hardin R."
+        ],
+        "volume-title": "Collective action"
+      },
+      "index": 17,
+      "key": "b18_177",
+      "year": 1982
+    },
+    {
+      "container_name": "Modern fiscal issues: Essays in honour of Carl S. Shoup",
+      "extra": {
+        "authors": [
+          "Head J. G."
+        ],
+        "volume-title": "Modern fiscal issues: Essays in honour of Carl S. Shoup"
+      },
+      "index": 18,
+      "key": "b19_178",
+      "year": 1972
+    },
+    {
+      "container_name": "Organizations and communication technology",
+      "extra": {
+        "authors": [
+          "Markus M. L."
+        ],
+        "doi": "10.4135/9781483325385.n9",
+        "volume-title": "Organizations and communication technology"
+      },
+      "index": 19,
+      "key": "b20_179",
+      "locator": "194",
+      "year": 1990
+    },
+    {
+      "container_name": "CSCW Proceedings",
+      "extra": {
+        "authors": [
+          "Markus M. L."
+        ],
+        "doi": "10.1145/99332.99368",
+        "volume": "90"
+      },
+      "index": 20,
+      "key": "b21_180",
+      "locator": "371",
+      "year": 1990
+    },
+    {
+      "container_name": "Research in Social Movements, Conflict and Change",
+      "extra": {
+        "authors": [
+          "Marwell G."
+        ]
+      },
+      "index": 21,
+      "key": "b22_181",
+      "year": 1984
+    },
+    {
+      "container_name": "The critical mass in collective action",
+      "extra": {
+        "authors": [
+          "Marwell G."
+        ],
+        "doi": "10.1017/cbo9780511663765",
+        "volume-title": "The critical mass in collective action"
+      },
+      "index": 22,
+      "key": "b23_182",
+      "year": 1993
+    },
+    {
+      "container_name": "Handbook of communication science",
+      "extra": {
+        "authors": [
+          "McQuail D."
+        ],
+        "volume-title": "Handbook of communication science"
+      },
+      "index": 23,
+      "key": "b24_183",
+      "locator": "327",
+      "year": 1987
+    },
+    {
+      "container_name": "Organization Science",
+      "extra": {
+        "authors": [
+          "Monge P. R."
+        ]
+      },
+      "index": 24,
+      "key": "b25_184",
+      "locator": "406",
+      "year": 1990
+    },
+    {
+      "container_name": "Mastering organizational change",
+      "extra": {
+        "authors": [
+          "Monge P. R."
+        ],
+        "volume-title": "Mastering organizational change"
+      },
+      "index": 25,
+      "key": "b26_185",
+      "locator": "323",
+      "year": 1993
+    },
+    {
+      "container_name": "Annual Review of Sociology",
+      "extra": {
+        "authors": [
+          "Oliver P. E."
+        ],
+        "volume": "19"
+      },
+      "index": 26,
+      "key": "b27_186",
+      "locator": "271",
+      "year": 1993
+    },
+    {
+      "container_name": "American Sociological Review",
+      "extra": {
+        "authors": [
+          "Oliver P."
+        ],
+        "volume": "49"
+      },
+      "index": 27,
+      "key": "b28_187",
+      "locator": "601",
+      "year": 1988
+    },
+    {
+      "extra": {
+        "doi": "10.1086/228313"
+      },
+      "index": 28,
+      "key": "b29_188"
+    },
+    {
+      "container_name": "The logic of collective action",
+      "extra": {
+        "authors": [
+          "Olson M."
+        ],
+        "volume-title": "The logic of collective action"
+      },
+      "index": 29,
+      "key": "b30_189",
+      "year": 1965
+    },
+    {
+      "container_name": "Office Administration and Automation",
+      "extra": {
+        "authors": [
+          "Panko R."
+        ],
+        "volume": "45"
+      },
+      "index": 30,
+      "key": "b31_190",
+      "locator": "37",
+      "year": 1984
+    },
+    {
+      "container_name": "Communication Research",
+      "extra": {
+        "authors": [
+          "Rafaeli S."
+        ],
+        "volume": "20"
+      },
+      "index": 31,
+      "key": "b32_191",
+      "locator": "277",
+      "year": 1993
+    },
+    {
+      "extra": {
+        "doi": "10.2307/1925895"
+      },
+      "index": 32,
+      "key": "b33_192"
+    },
+    {
+      "container_name": "The Public Electronic Network (PEN) and the Homeless in Santa Monica",
+      "extra": {
+        "authors": [
+          "Schmitz J."
+        ],
+        "volume-title": "The Public Electronic Network (PEN) and the Homeless in Santa Monica"
+      },
+      "index": 33,
+      "key": "b34_193",
+      "year": 1993
+    },
+    {
+      "container_name": "The telecommunication revolution",
+      "extra": {
+        "authors": [
+          "Sirbu M. A."
+        ],
+        "volume-title": "The telecommunication revolution"
+      },
+      "index": 34,
+      "key": "b35_194",
+      "locator": "140",
+      "year": 1992
+    },
+    {
+      "container_name": "American Sociological Review",
+      "extra": {
+        "authors": [
+          "Stoke J. F."
+        ],
+        "volume": "52"
+      },
+      "index": 35,
+      "key": "b36_195",
+      "locator": "778",
+      "year": 1987
+    },
+    {
+      "extra": {
+        "doi": "10.1016/0049-089x(73)90004-5"
+      },
+      "index": 36,
+      "key": "b37_196"
+    },
+    {
+      "container_name": "Journal of Communication",
+      "extra": {
+        "authors": [
+          "Valente T. W."
+        ],
+        "volume": "43"
+      },
+      "index": 37,
+      "key": "b38_197",
+      "locator": "30",
+      "year": 1993
+    },
+    {
+      "container_name": "Theory of games and economic behavior",
+      "extra": {
+        "authors": [
+          "Neumann J."
+        ],
+        "volume-title": "Theory of games and economic behavior"
+      },
+      "index": 38,
+      "key": "b39_198",
+      "year": 1944
+    }
+  ],
+  "release_stage": "published",
+  "release_type": "article-journal",
+  "release_year": 1996,
+  "revision": "2c010b0c-e219-4cf2-b003-6c344d24ae6b",
+  "state": "active",
+  "title": "Connective and Communal Public Goods in Interactive Communication Systems",
+  "work_id": "dpl6okdbtvd2zonhn3w3xp3v7i"
+}
diff --git a/tests/data/release/5lk635o65nc2tnkus3pkf2ggeq b/tests/data/release/5lk635o65nc2tnkus3pkf2ggeq
new file mode 100644
index 0000000..773e63f
--- /dev/null
+++ b/tests/data/release/5lk635o65nc2tnkus3pkf2ggeq
@@ -0,0 +1,47 @@
+{
+  "abstracts": [
+    {
+      "content": "Colonial non-zooxanthellate corals from deep-water coral reefs, Lophelia pertusa and Madrepora oculata, produce large amounts of extracellular mucus (EMS). This mucus has various functions, e.g., an antifouling capability protecting the coral skeleton from attacks of endolithic and boring organisms. Both corals show thick epithecal and exothecal skeletal parts with a clear lamellar growth pattern. The formation of the epitheca is unclear. It is supposed that the EMS play a central role during the calcification process of the epithecal skeletal parts. Staining with the fluorochrome tetracycline has shown an enrichment of Ca2+ ions in the mucus. In order to investigate this hypothesis, the protein content of the mucus and the intracrystalline organic matter from newly formed epithecal aragonite of Madrepora oculata was determined via sodium dodecyl sulfate (SDS) gel electrophoresis. Identical band patterns within both substances could be detected, one around 45 kDa molecular weight and a cluster around 30-35 kDa molecular weight. The occurrence of identical protein patterns within the mucus and in the newly formed aragonite confirms the idea that the mucus plays an important role during the organomineralization of the coral epitheca.",
+      "lang": "en",
+      "mimetype": "text/plain",
+      "sha1": "eab45cb50279523aa15e47d4ff6b61453110d80b"
+    }
+  ],
+  "contribs": [
+    {
+      "given_name": "Joachim",
+      "index": 0,
+      "raw_name": "Joachim Reitner",
+      "role": "author",
+      "surname": "Reitner"
+    },
+    {
+      "raw_name": "FID GEO"
+    },
+    {
+      "raw_name": "FID GEO"
+    }
+  ],
+  "ext_ids": {
+    "doi": "10.23689/fidgeo-2708"
+  },
+  "extra": {
+    "datacite": {
+      "resourceType": "Article",
+      "resourceTypeGeneral": "Text"
+    },
+    "release_month": 5
+  },
+  "ident": "5lk635o65nc2tnkus3pkf2ggeq",
+  "language": "en",
+  "publisher": "FID GEO",
+  "refs": [],
+  "release_date": "2018-05-07",
+  "release_stage": "published",
+  "release_type": "article-journal",
+  "release_year": 2018,
+  "revision": "1f08bce1-d393-4a94-8ffa-0412f9b86a26",
+  "state": "active",
+  "title": "Calcifying extracellular mucus substances (EMS) of Madrepora oculata",
+  "work_id": "mswo636sbbgytakvcw36uz5htq"
+}
diff --git a/tests/data/release/75ky5xniobchzbhzwhmwhu5uoa b/tests/data/release/75ky5xniobchzbhzwhmwhu5uoa
new file mode 100644
index 0000000..965a29a
--- /dev/null
+++ b/tests/data/release/75ky5xniobchzbhzwhmwhu5uoa
@@ -0,0 +1,252 @@
+{
+  "abstracts": [
+    {
+      "content": "<jats:p>&lt;p&gt;&lt;strong&gt;Abstract.&lt;/strong&gt; The soil texture representation with the standard textural fraction triplet &lt;q&gt;sand–silt–clay&lt;/q&gt; is commonly used to estimate soil properties. The objective of this work was to test the hypothesis that other fraction sizes in the triplets may provide a better representation of soil texture for estimating some soil parameters. We estimated the cumulative particle size distribution and bulk density from an entropy-based representation of the textural triplet with experimental data for 6240 soil samples. The results supported the hypothesis. For example, simulated distributions were not significantly different from the original ones in 25 and 85&lt;span class=\"thinspace\"&gt;&lt;/span&gt;% of cases when the sand–silt–clay and &lt;q&gt;very coarse+coarse + medium sand − fine + very fine sand − silt+clay&lt;/q&gt; were used, respectively. When the same standard and modified triplets were used to estimate the average bulk density, the coefficients of determination were 0.001 and 0.967, respectively. Overall, the textural triplet selection appears to be application and data specific.&lt;/p&gt;\n                    </jats:p>",
+      "mimetype": "application/xml+jats",
+      "sha1": "7b160d44a40de5304ed25cb0dec26bf6d86b13c3"
+    }
+  ],
+  "container_id": "2ffmqowoafbkzae4g2zdu7qx6m",
+  "contribs": [
+    {
+      "extra": {
+        "seq": "first"
+      },
+      "index": 0,
+      "raw_name": "Miguel Ángel Martín",
+      "role": "author"
+    },
+    {
+      "creator_id": "hlpiwppdfnbejhct5zmjbigoca",
+      "index": 1,
+      "raw_name": "Yakov A. Pachepsky",
+      "role": "author"
+    },
+    {
+      "creator_id": "p5nczejcmzfznpxliunuceswey",
+      "index": 2,
+      "raw_name": "Carlos García-Gutiérrez",
+      "role": "author"
+    },
+    {
+      "index": 3,
+      "raw_name": "Miguel Reyes",
+      "role": "author"
+    }
+  ],
+  "ext_ids": {
+    "doi": "10.5194/se-9-159-2018"
+  },
+  "extra": {
+    "crossref": {
+      "license": [
+        {
+          "URL": "https://creativecommons.org/licenses/by/4.0/",
+          "content-version": "unspecified",
+          "delay-in-days": 0,
+          "start": "2018-02-22T00:00:00Z"
+        }
+      ],
+      "subject": [
+        "Earth-Surface Processes",
+        "Stratigraphy",
+        "Palaeontology",
+        "Soil Science",
+        "Geology",
+        "Geochemistry and Petrology",
+        "Geophysics"
+      ],
+      "type": "journal-article"
+    }
+  },
+  "ident": "75ky5xniobchzbhzwhmwhu5uoa",
+  "language": "en",
+  "pages": "159-165",
+  "publisher": "Copernicus GmbH",
+  "refs": [
+    {
+      "extra": {
+        "doi": "10.1016/s0927-7757(97)00144-1",
+        "unstructured": "Assouline, S. and Rouault, Y.: Modeling the relationships between particle and pore size distributions in multicomponent sphere packs: Application to the water retention curve, Colloid. Surface. A, 127, 201–210, https://doi.org/10.1016/S0927-7757(97)00144-1, 1997."
+      },
+      "index": 0,
+      "key": "ref1"
+    },
+    {
+      "extra": {
+        "doi": "10.1098/rspa.1985.0057",
+        "unstructured": "Barnsley, M. F. and Demko, S.: Iterated functions systems and the global construction of fractals, Proc. R. Soc. Lon. Ser.-A, 399, 243–275, https://doi.org/10.1098/rspa.1985.0057, 1985."
+      },
+      "index": 1,
+      "key": "ref2"
+    },
+    {
+      "extra": {
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new file mode 100644
index 0000000..03f0f48
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index 0000000..a3f7733
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+        "volume-title": "Knowledge resource sharing as collective action: Integrating public goods theory and transactive memory. Unpublished manuscript"
+      },
+      "index": 39,
+      "key": "atypb40",
+      "year": 2004
+    },
+    {
+      "container_name": "The impact of social capital on the development of transactive memory systems. Unpublished dissertation",
+      "extra": {
+        "authors": [
+          "Yuan, Y.C."
+        ],
+        "volume-title": "The impact of social capital on the development of transactive memory systems. Unpublished dissertation"
+      },
+      "index": 40,
+      "key": "atypb41",
+      "year": 2004
+    },
+    {
+      "container_name": "Human Communication Research",
+      "extra": {
+        "authors": [
+          "Yuan, Y.C."
+        ],
+        "volume": "31"
+      },
+      "index": 41,
+      "key": "atypb42",
+      "locator": "212",
+      "year": 2005
+    },
+    {
+      "container_name": "Best Papers Proceedings of the Sixty-fifth Annual Meeting of the Academy of Management [CD]",
+      "extra": {
+        "authors": [
+          "Yuan, Y.C."
+        ],
+        "volume-title": "Best Papers Proceedings of the Sixty-fifth Annual Meeting of the Academy of Management [CD]"
+      },
+      "index": 42,
+      "key": "atypb43"
+    }
+  ],
+  "release_stage": "published",
+  "release_type": "article-journal",
+  "release_year": 2007,
+  "revision": "120011b7-9ee7-4420-b0b6-dd402f0fb1ce",
+  "state": "active",
+  "title": "Access to Information in Connective and Communal Transactive Memory Systems",
+  "volume": "34",
+  "work_id": "rc6tndewhjdrrmqwg5bpmzvobm"
+}
diff --git a/tests/data/release/uvgwfvwnnbg7xchy63bloyrwvi b/tests/data/release/uvgwfvwnnbg7xchy63bloyrwvi
new file mode 100644
index 0000000..35cfb06
--- /dev/null
+++ b/tests/data/release/uvgwfvwnnbg7xchy63bloyrwvi
@@ -0,0 +1,65 @@
+{
+  "abstracts": [
+    {
+      "content": "<jats:p>The soil texture representation with the standard textural fraction triplet 'sand-silt-clay' is commonly used to estimate soil properties. The objective of this work was to test the hypothesis that other fraction sizes in the triplets may provide better representation of soil texture for estimating some soil parameters. We estimated the cumulative particle size distribution and bulk density from entropy-based representation of the textural triplet with experimental data for 6300 soil samples. Results supported the hypothesis. For example, simulated distributions were not significantly different from the original ones in 25 and 85&amp;amp;thinsp;% of cases when the 'sand-silt-sand' and 'very coarse+coarse + medium sand &amp;amp;ndash; fine +very fine sand &amp;amp;ndash; silt+clay', were used, respectively. When the same standard and modified triplets were used to estimate the average bulk density, the coefficients of determination were 0.001 and 0.967, respectively. Overall, the textural triplet selection appears to be application- and data-specific.\n                    </jats:p>",
+      "mimetype": "application/xml+jats",
+      "sha1": "6b4067965dd1a9939dda89d4d25bd34abcf38a4e"
+    }
+  ],
+  "container_id": "ime74rybwnaulfplfzm2dxecte",
+  "contribs": [
+    {
+      "extra": {
+        "seq": "first"
+      },
+      "index": 0,
+      "raw_name": "Miguel Ángel Martín",
+      "role": "author"
+    },
+    {
+      "index": 1,
+      "raw_name": "Yakov A. Pachepsky",
+      "role": "author"
+    },
+    {
+      "creator_id": "p5nczejcmzfznpxliunuceswey",
+      "index": 2,
+      "raw_name": "Carlos García-Gutiérrez",
+      "role": "author"
+    },
+    {
+      "index": 3,
+      "raw_name": "Miguel Reyes",
+      "role": "author"
+    }
+  ],
+  "ext_ids": {
+    "doi": "10.5194/se-2017-84"
+  },
+  "extra": {
+    "crossref": {
+      "license": [
+        {
+          "URL": "https://creativecommons.org/licenses/by/4.0/",
+          "content-version": "unspecified",
+          "delay-in-days": 0,
+          "start": "2017-10-10T00:00:00Z"
+        }
+      ],
+      "type": "journal-article"
+    }
+  },
+  "ident": "uvgwfvwnnbg7xchy63bloyrwvi",
+  "language": "en",
+  "pages": "1-14",
+  "publisher": "Copernicus GmbH",
+  "refs": [],
+  "release_date": "2017-10-10",
+  "release_stage": "published",
+  "release_type": "article-journal",
+  "release_year": 2017,
+  "revision": "ef9cd393-529b-4efa-9669-3ff068e8cd96",
+  "state": "active",
+  "title": "On soil textural classifications and soil texture-based estimations",
+  "work_id": "h3cos53tsneexl6c4eelhzaddu"
+}
diff --git a/tests/data/release/zfwf3tefajc6zdxa47vgilm7wm b/tests/data/release/zfwf3tefajc6zdxa47vgilm7wm
new file mode 100644
index 0000000..51d71ba
--- /dev/null
+++ b/tests/data/release/zfwf3tefajc6zdxa47vgilm7wm
@@ -0,0 +1,33 @@
+{
+  "abstracts": [],
+  "contribs": [
+    {
+      "extra": {
+        "seq": "first"
+      },
+      "index": 0,
+      "raw_name": "Joachim Reitner",
+      "role": "author"
+    }
+  ],
+  "ext_ids": {
+    "core": "33670711",
+    "doi": "10.1007/3-540-27673-4_38"
+  },
+  "extra": {
+    "container_name": "Erlangen Earth Conference Series",
+    "crossref": {
+      "type": "book-chapter"
+    }
+  },
+  "ident": "zfwf3tefajc6zdxa47vgilm7wm",
+  "pages": "731-744",
+  "publisher": "Springer-Verlag",
+  "refs": [],
+  "release_stage": "published",
+  "release_type": "chapter",
+  "revision": "03ccf3b6-7e8b-4fac-891e-2003551f5e77",
+  "state": "active",
+  "title": "Calcifying extracellular mucus substances (EMS) of Madrepora oculata — a first geobiological approach",
+  "work_id": "3rgdqpbcjrgt5mud3bnomnawva"
+}
diff --git a/tests/data/verify.csv b/tests/data/verify.csv
index b13a696..46df18e 100644
--- a/tests/data/verify.csv
+++ b/tests/data/verify.csv
@@ -77,3 +77,9 @@ vz7q453kr5ds3ptsldwxedbiii,2wzybzqlmjhjfh75cxjohbvzi4,Status.DIFFERENT,Miss.RELE
 efumvvpw6jbb7ehp2qfdatgxzy,funn7cwjbrgefji27tzpl4avuu,Status.STRONG,OK.ARXIV_VERSION
 pjvosq3ulzeb5d6w7zijrbz75y,pxkm2asxjnflzkdi5qnfd5fpt4,Status.DIFFERENT,Miss.BOOK_CHAPTER
 ji3qg5sajndt7p54u7wumqsjye,hxau2e34bnhhbeucfdrncgmcby,Status.DIFFERENT,Miss.RELEASE_TYPE
+2gpvznjjcfbmhats6ot2vsodju,qk6arua2snaobfvdvlfvjp3yeq,Status.DIFFERENT,
+75ky5xniobchzbhzwhmwhu5uoa,uvgwfvwnnbg7xchy63bloyrwvi,Status.STRONG,
+jdtngtiz3bdqboypujoni2x3ry,byh7xr5qhjca3bw53ivdotck3e,Status.EXACT,
+5lk635o65nc2tnkus3pkf2ggeq,hqrvhbvocvaabg6nr5p43tl3uq,TODO,
+5lk635o65nc2tnkus3pkf2ggeq,zfwf3tefajc6zdxa47vgilm7wm,TODO,
+hqrvhbvocvaabg6nr5p43tl3uq,zfwf3tefajc6zdxa47vgilm7wm,TODO,
diff --git a/tests/test_cluster.py b/tests/test_cluster.py
index e5944af..ef63882 100644
--- a/tests/test_cluster.py
+++ b/tests/test_cluster.py
@@ -1,13 +1,14 @@
-import json
-import io
 import collections
+import io
+import json
 import os
 import tempfile
 
 import pytest
 
-from fuzzycat.cluster import (release_key_title, release_key_title_normalized,
-                              release_key_title_nysiis, Cluster)
+from fuzzycat.cluster import (Cluster, release_key_title,
+                              release_key_title_normalized,
+                              release_key_title_nysiis)
 
 Case = collections.namedtuple("Case", 'input output')
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 46ffd0e..ea188a4 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,5 +1,6 @@
 import pytest
-from fuzzycat.utils import slugify_string, cut, author_similarity_score
+
+from fuzzycat.utils import author_similarity_score, cut, slugify_string
 
 
 def test_slugify_string():
diff --git a/tests/test_verify.py b/tests/test_verify.py
index 4807de8..52ad65a 100644
--- a/tests/test_verify.py
+++ b/tests/test_verify.py
@@ -2,6 +2,7 @@ import pytest
 import csv
 import json
 import os
+import logging
 
 from fuzzycat.verify import Status, compare
 
@@ -16,6 +17,9 @@ status_mapping = {
     "Status.WEAK": Status.WEAK,
 }
 
+logger = logging.getLogger('test_verify')
+logger.setLevel(logging.DEBUG)
+
 
 def load_release_ident(ident):
     dst = os.path.join(RELEASE_ENTITIES_DIR, ident)
@@ -29,9 +33,15 @@ def test_compare():
     with open(VERIFY_CSV) as f:
         reader = csv.reader(f, delimiter=',')
         for i, row in enumerate(reader):
-            a, b, expected_status, expected_reason = row
+            try:
+                a, b, expected_status, expected_reason = row
+            except ValueError as exc:
+                pytest.fail("invalid test file, maybe missing a comma? {}".format(exc))
             status, reason = compare(load_release_ident(a), load_release_ident(b))
+            if not expected_status or expected_status.lower() == "todo":
+                logger.debug("skipping test {} {}: no result defined (we think {}, {})".format(a, b, status, reason))
             assert status == status, "status: want {}, got {} for {} {}".format(
                 expected_status, status, a, b)
             if expected_reason:
                 assert reason == reason, "reason: want {}, got {}".format(expected_reason, reason)
+        logger.info("ran verification over {} cases (https://git.io/JkDgS)".format(i))