def test_msa_reduce__multiple_empty_column__all_empty_column_are_removed():
fa_1 = FASTA("Name_A", "Meta_A", "-AnTN")
fa_2 = FASTA("Name_B", "Meta_B", "NC-NN")
initial = MSA([fa_1, fa_2])
fa_reduced_1 = FASTA("Name_A", "Meta_A", "AT")
fa_reduced_2 = FASTA("Name_B", "Meta_B", "CN")
expected = MSA([fa_reduced_1, fa_reduced_2])
assert_equal(initial.reduce(), expected)
def test_msa_reduce__only_empty_column__none_is_returned():
fa_1 = FASTA("Name_A", "Meta_A", "---Nn")
fa_2 = FASTA("Name_B", "Meta_B", "Nn--N")
initial = MSA([fa_1, fa_2])
assert_equal(initial.reduce(), None)
def test_msa_reduce__no_empty_columns__no_columns_are_removed():
fa_1 = FASTA("Name_A", "Meta_A", "ACnT")
fa_2 = FASTA("Name_B", "Meta_B", "C-TN")
initial = MSA([fa_1, fa_2])
expected = MSA([fa_1, fa_2])
assert_equal(initial.reduce(), expected)
