def test_union1():
gs1 = GeneSignature(name="test1", gene2weight=['TP53', 'SOX4'])
gs2 = GeneSignature(name="test1", gene2weight=['TP53', 'SOX2'])
gsu = gs1.union(gs2)
assert 'TP53' in gsu
assert 'SOX4' in gsu
assert 'SOX2' in gsu
assert len(gsu) == 3
def test_union3():
gs1 = GeneSignature(name="test1", gene2weight={'TP53': 0.8, 'SOX4': 0.75})
gs2 = GeneSignature(name="test1", gene2weight={'TP53': 0.3, 'SOX2': 0.60})
gsu = gs1.union(gs2)
assert 'TP53' in gsu
assert gsu.gene2weight['TP53'] == 0.8
assert 'SOX4' in gsu
assert gsu.gene2weight['SOX4'] == 0.75
assert 'SOX2' in gsu
assert gsu.gene2weight['SOX2'] == 0.6
assert len(gsu) == 3
