Add tests for invalid units and reference date

pydata · May 12, 2021 · a46936f · a46936f
1 parent e56ede2
commit a46936f
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/xarray/tests/test_coding_times.py b/xarray/tests/test_coding_times.py
@@ -823,6 +823,12 @@ def test_encode_cf_datetime_overflow(shape):
     roundtrip = decode_cf_datetime(num, units, calendar)
     np.testing.assert_array_equal(dates, roundtrip)
 
+    with pytest.raises(ValueError, match="invalid time units"):
+        encode_cf_datetime([1, 2, 3], units="moments since 2000-01-01")
+
+    with pytest.raises(ValueError, match="invalid reference date"):
+        encode_cf_datetime([1, 2, 3], units="days since NO_YEAR")
+
 
 def test_encode_cf_datetime_pandas_min():
     # GH 2623