diff --git a/allofplos/tests/test_partial_dois.py b/allofplos/tests/test_partial_dois.py
new file mode 100644
index 00000000..b750fd2c
--- /dev/null
+++ b/allofplos/tests/test_partial_dois.py
@@ -0,0 +1,52 @@
+from .. import Corpus, Article, starterdir
+from ..plos_regex import validate_partial_doi, validate_doi
+from ..transformations import partial_to_doi, doi_to_partial
+
+import pytest
+
+
+@pytest.fixture
+def corpus():
+    return Corpus(starterdir, seed=1000)
+
+
+@pytest.fixture
+def test_article():
+    return Article('10.1371/journal.pone.0040259', directory=starterdir)
+
+
+@pytest.fixture
+def test_doi():
+    return '10.1371/journal.pone.0040259'
+
+
+@pytest.fixture
+def test_partial_doi():
+    return 'pone.0040259'
+
+
+def test_partial_doi_regex(test_partial_doi):
+    assert validate_partial_doi(test_partial_doi)
+    assert not validate_partial_doi(' pone.0040259')
+    assert not validate_partial_doi('pone.0040259 ')
+
+
+def test_partial_doi_transform(test_doi, test_partial_doi):
+    partial_doi = doi_to_partial(test_doi)
+    assert partial_doi == test_partial_doi
+
+
+def test_doi_transform(test_partial_doi, test_doi):
+    doi = partial_to_doi(test_partial_doi)
+    assert validate_doi(doi)
+    assert doi == test_doi
+
+
+def test_partial_doi_method_article(test_partial_doi, test_article):
+    article = Article.from_partial_doi(test_partial_doi, directory=starterdir)
+    assert article == test_article
+
+
+def test_partial_doi_method_corpus(corpus, test_article, test_partial_doi):
+    article = corpus[test_partial_doi]
+    assert article == test_article