54 lines
1.4 KiB
Ruby
54 lines
1.4 KiB
Ruby
|
require 'minitest/autorun'
|
||
|
|
require_relative 'nucleotide_count'
|
||
|
|
|
||
|
|
class NucleotideTest < Minitest::Test
|
||
|
|
def test_empty_dna_strand_has_no_adenosine
|
||
|
|
assert_equal 0, Nucleotide.from_dna('').count('A')
|
||
|
|
end
|
||
|
|
|
||
|
|
def test_repetitive_cytidine_gets_counted
|
||
|
|
# skip
|
||
|
|
assert_equal 5, Nucleotide.from_dna('CCCCC').count('C')
|
||
|
|
end
|
||
|
|
|
||
|
|
def test_counts_only_thymidine
|
||
|
|
# skip
|
||
|
|
assert_equal 1, Nucleotide.from_dna('GGGGGTAACCCGG').count('T')
|
||
|
|
end
|
||
|
|
|
||
|
|
def test_counts_a_nucleotide_only_once
|
||
|
|
# skip
|
||
|
|
dna = Nucleotide.from_dna('CGATTGGG')
|
||
|
|
dna.count('T')
|
||
|
|
dna.count('T')
|
||
|
|
assert_equal 2, dna.count('T')
|
||
|
|
end
|
||
|
|
|
||
|
|
def test_empty_dna_strand_has_no_nucleotides
|
||
|
|
# skip
|
||
|
|
expected = { 'A' => 0, 'T' => 0, 'C' => 0, 'G' => 0 }
|
||
|
|
assert_equal expected, Nucleotide.from_dna('').histogram
|
||
|
|
end
|
||
|
|
|
||
|
|
def test_repetitive_sequence_has_only_guanosine
|
||
|
|
# skip
|
||
|
|
expected = { 'A' => 0, 'T' => 0, 'C' => 0, 'G' => 8 }
|
||
|
|
assert_equal expected, Nucleotide.from_dna('GGGGGGGG').histogram
|
||
|
|
end
|
||
|
|
|
||
|
|
def test_counts_all_nucleotides
|
||
|
|
# skip
|
||
|
|
s = 'AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTCTGATAGCAGC'
|
||
|
|
dna = Nucleotide.from_dna(s)
|
||
|
|
expected = { 'A' => 20, 'T' => 21, 'G' => 17, 'C' => 12 }
|
||
|
|
assert_equal expected, dna.histogram
|
||
|
|
end
|
||
|
|
|
||
|
|
def test_validates_dna
|
||
|
|
# skip
|
||
|
|
assert_raises ArgumentError do
|
||
|
|
Nucleotide.from_dna('JOHNNYAPPLESEED')
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|