diff --git a/pycounter/constants.py b/pycounter/constants.py
index 515b630..dcb1208 100644
--- a/pycounter/constants.py
+++ b/pycounter/constants.py
@@ -59,7 +59,7 @@
     u"DB1": u"Total Searches, Result Clicks and Record Views by Month and " u"Database",
     u"DB2": u"Access Denied by Month, Database and Category",
     u"JR1": u"Number of Successful Full-Text Article Requests by Month and " u"Journal",
-    u"JR1GOA": u"Number of Successful Gold Open Access Full-Text Article "
+    u"JR1 GOA": u"Number of Successful Gold Open Access Full-Text Article "
     u"Requests by Month and Journal",
     u"JR1a": u"Number of Successful Full-Text Article Requests from an "
     u"Archive by Month and Journal",
@@ -106,6 +106,18 @@
         u"Reporting Period HTML",
         u"Reporting Period PDF",
     ),
+    "JR1 GOA": (
+        u"Journal",
+        u"Publisher",
+        u"Platform",
+        u"Journal DOI",
+        u"Proprietary Identifier",
+        u"Print ISSN",
+        u"Online ISSN",
+        u"Reporting Period Total",
+        u"Reporting Period HTML",
+        u"Reporting Period PDF",
+    ),
     "JR2": (
         u"Journal",
         u"Publisher",
diff --git a/pycounter/test/conftest.py b/pycounter/test/conftest.py
index 652e9e8..95040a3 100644
--- a/pycounter/test/conftest.py
+++ b/pycounter/test/conftest.py
@@ -169,3 +169,28 @@ def br3_report():
 def jr2_report():
     """Journal report 2 (turnaways)."""
     return parsedata("C4JR2.csv")
+
+
+@pytest.fixture(
+    params="""C4BR1.tsv
+C4BR2.tsv
+C4BR3.csv
+C4DB1.tsv
+C4DB1_split_year.tsv
+C4DB2.tsv
+C4JR1.csv
+C4JR1_bad.csv
+C4JR1big.csv
+C4JR1GOA.csv
+C4JR1mul.csv
+C4JR1my.csv
+C4JR2.csv
+PR1.tsv
+simpleBR1.csv
+simpleJR1.csv
+simpleJR1.tsv
+""".split()
+)
+def all_reports(request):
+    """All COUNTER 4 reports."""
+    return parsedata(request.param)
diff --git a/pycounter/test/data/C4JR2.csv b/pycounter/test/data/C4JR2.csv
index 0442c4d..649fd16 100644
--- a/pycounter/test/data/C4JR2.csv
+++ b/pycounter/test/data/C4JR2.csv
@@ -5,7 +5,7 @@
 "2011-01-01 to 2011-12-31"
 "Date run:"
 2012-02-21
-Journal,Publisher,Platform,"Journal DOI","Proprietary Identifier","Print ISSN","Online ISSN","Access Denied Category","Reporting Period Total","Reporting Period HTML","Reporting Period PDF",Jan-2011,Feb-2011,Mar-2011,Apr-2011,May-2011,Jun-2011,Jul-2011,Aug-2011,Sep-2011,Oct-2011,Nov-2011,Dec-2011
+Journal,Publisher,Platform,"Journal DOI","Proprietary Identifier","Print ISSN","Online ISSN","Access Denied Category","Reporting Period Total",Jan-2011,Feb-2011,Mar-2011,Apr-2011,May-2011,Jun-2011,Jul-2011,Aug-2011,Sep-2011,Oct-2011,Nov-2011,Dec-2011
 "Total for all journals","Maximegalon University Press",MJO,,,,,16,0,16,2,1,0,0,0,5,1,1,0,5,1,0
 "Abstracts of Working Papers in Economics","Maximegalon University Press",MJO,,,0951-0079,0951-0079,Access denied: concurrent/simultaneous user license limit exceeded,3,3,0,0,0,0,0,0,0,0,0,0,0,0,0
 "Acta Numerica","Maximegalon University Press",MJO,,,0962-4929,1474-0508,Access denied: concurrent/simultaneous user license limit exceeded,16,0,16,2,1,0,0,0,5,1,1,0,5,1,0
diff --git a/pycounter/test/test_output_common.py b/pycounter/test/test_output_common.py
index 73aef01..27ab4a9 100644
--- a/pycounter/test/test_output_common.py
+++ b/pycounter/test/test_output_common.py
@@ -65,3 +65,8 @@ def test_totals_sparse_data(tmp_path):
     assert book_line.startswith("Book 1")
     numbers = [int(num) for num in book_line.split("\t")[-3:]]
     assert numbers == [0, 3, 5], "check counts for book 1"
+
+
+def test_roundtrippable(all_reports, tmp_path):
+    """Test that all of our parsable reports can also be output."""
+    all_reports.write_tsv(tmp_path / "output.tsv")