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#!/usr/bin/env python3
import pytest
import pyranges as pr
def assert_equal_length_before_after(gr1, gr2):
print("in test")
l1 = len(gr1)
l2 = len(gr2)
c = pr.concat([gr1, gr2])
if not gr1.stranded or not gr2.stranded:
assert not c.stranded
lc = len(c)
assert l1 + l2 == lc
def test_concat_stranded_unstranded(f1, f2):
assert_equal_length_before_after(f1, f2)
def test_concat_unstranded_unstranded(f1, f2):
assert_equal_length_before_after(f1.unstrand(), f2.unstrand())
def test_concat_stranded_unstranded(f1, f2):
assert_equal_length_before_after(f1, f2.unstrand())
def test_concat_unstranded_stranded(f1, f2):
assert_equal_length_before_after(f1.unstrand(), f2)
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