def test_delete_gene():
gene_list = GeneList(list_id='my cool list')
assert gene_list.list_id == 'my cool list'
assert gene_list.gene_ids == []
gene_ids = ['ADK', 'SKD', 'EGFR']
gene_list.gene_ids = gene_ids
assert gene_list._gene_ids == ','.join(gene_ids)
# remove one gene
gene_list.delete_gene('ADK')
assert gene_list.gene_ids == gene_ids[1:]
# remove multiple genes
gene_list.delete_gene('SKD', 'EGFR')
assert gene_list.gene_ids == []
