def test_lcs():
seq_left = BioSeq('gcgcaatg')
seq_top = BioSeq('gccctagcg')
lcs = LCS(seq_left, seq_top)
result_lcs = lcs.get_trace_back()
expect_lcs = ['G', 'C', 'C', 'A', 'G']
assert result_lcs == expect_lcs
def test_item_in_seq():
seq = BioSeq('acgt')
item = 'cg'
in_result = item in seq
exp_result = True
assert in_result == exp_result
def test_slice():
seq = BioSeq('acgt')
slice_values = seq[:2]
expec_values = 'AC'
assert slice_values == expec_values
def test_index():
seq = BioSeq('acgt')
index_value = seq[-2]
expec_value = 'G'
assert index_value == expec_value
def test_imul_with_integer():
seq = BioSeq('acgt')
seq *= INTEGER_MUL
mul_result = seq
exp_result = BioSeq('acgtacgt')
assert mul_result == exp_result
def test_init_with_non_string_value():
with pytest.raises(TypeError):
BioSeq(123)
def test_imul_with_non_integer():
seq = BioSeq('acgt')
with pytest.raises(TypeError):
seq *= NON_INTEGER_MUL
def test_rmul_with_integer():
seq = BioSeq('acgt')
mul_result = INTEGER_MUL * seq
exp_result = BioSeq('acgtacgt')
assert mul_result == exp_result
def test_radd_string():
left = 'tgca'
right = BioSeq('acgt')
add_result = left + right
exp_result = BioSeq('tgcaacgt')
assert add_result == exp_result
def test_add_BioSeq():
left = BioSeq('acgt')
right = BioSeq('ccgt')
add_result = left + right
expected_result = BioSeq('acgtccgt')
assert add_result == expected_result
def test_reverse():
seq = BioSeq('acgt')
reverse_result = seq.reverse()
expect_result = BioSeq('tgca')
assert reverse_result == expect_result
def test_len():
seq = BioSeq('actgcaggccatc')
len_of_seq = len(seq)
expected_len = 13
assert len_of_seq == expected_len
def test_count_with_string():
seq = BioSeq('acgttccgccgggg')
substr = "cg"
count_result = seq.count(substr)
exp_result = 3
assert count_result == exp_result
def test_count_with_non_string():
seq = BioSeq('acgttccgccgggg')
substr = 123
with pytest.raises(TypeError):
seq.count(substr)