Add tests for SeqInfo without None's (#7)

Author: jkanche

tests/test_sequence_information.py

@@ -5,8 +5,25 @@
 import dolomite_ranges
 from genomicranges import SeqInfo
 
-
 def test_sequence_information():
+    si = SeqInfo(
+        seqnames=["chrA", "chrB", "chrC"],
+        seqlengths=[10, 100, 2200],
+        is_circular=[False, True, False],
+        genome=["hg19", "hg38", "hg19"],
+    )
+
+    dir = os.path.join(mkdtemp(), "seqinfo")
+    dl.save_object(si, dir)
+
+    roundtrip = dl.read_object(dir)
+    assert roundtrip.get_seqnames() == si.get_seqnames()
+    assert roundtrip.get_seqlengths() == si.get_seqlengths()
+    assert roundtrip.get_is_circular() == si.get_is_circular()
+    assert roundtrip.get_genome() == si.get_genome()
+
+
+def test_sequence_information_with_none():
     si = SeqInfo(
         seqnames=["chrA", "chrB", "chrC"],
         seqlengths=[10, None, 2200],