add tests

Author: jsstevenson

tests/data/ucsc-chainfile/chainfile_hg19_to_hg38_.chain

@@ -1,3 +1,14 @@
+chain 24611930 chr1 249250621 + 206072707 206332221 chr1 248956422 - 42687778 42947276 254
+33374	0	21
+6406	0	1
+95162	1	0
+39481	2	0
+4456	0	1
+25212	55	16
+10374	0	1
+1898	0	2
+43093
+
 chain 14633688187 chr7 159138663 + 10000 159128663 chr7 159345973 + 10000 159335973 7
 222484	50000	10034
 183862	17	0

tests/test_liftover.py

@@ -23,6 +23,10 @@ def test_hg19_to_hg38():
     assert len(result) == 1
     assert result[0] == ("chr7", 140753336, Strand.POSITIVE)
 
+    result = converter.convert_coordinate("chr1", 206072707)
+    assert len(result) == 1
+    assert result[0] == ("chr1", 206268644, Strand.NEGATIVE)
+
     # coordinate exceeds bounds
     result = converter.convert_coordinate("chr7", 14040053136)
     assert result == []