elm/exercises/hamming/tests/Tests.elm
2017-05-28 08:14:40 +02:00

39 lines
1.7 KiB
Elm

module Tests exposing (..)
import Test exposing (..)
import Expect
import Hamming exposing (distance)
tests : Test
tests =
describe "Hamming"
[ test "identical strands" <|
\() -> Expect.equal (Just 0) (distance "A" "A")
, test "long identical strands" <|
\() -> Expect.equal (Just 0) (distance "GGACTGA" "GGACTGA")
, test "complete distance in single nucleotide strands" <|
\() -> Expect.equal (Just 1) (distance "A" "G")
, test "complete distance in small strands" <|
\() -> Expect.equal (Just 2) (distance "AG" "CT")
, test "small distance in small strands" <|
\() -> Expect.equal (Just 1) (distance "AT" "CT")
, test "small distance" <|
\() -> Expect.equal (Just 1) (distance "GGACG" "GGTCG")
, test "small distance in long strands" <|
\() -> Expect.equal (Just 2) (distance "ACCAGGG" "ACTATGG")
, test "non-unique character in first strand" <|
\() -> Expect.equal (Just 1) (distance "AGA" "AGG")
, test "non-unique character in second strand" <|
\() -> Expect.equal (Just 1) (distance "AGG" "AGA")
, test "large distance" <|
\() -> Expect.equal (Just 4) (distance "GATACA" "GCATAA")
, test "large distance in off-by-one strand" <|
\() -> Expect.equal (Just 9) (distance "GGACGGATTCTG" "AGGACGGATTCT")
, test "empty strands" <|
\() -> Expect.equal (Just 0) (distance "" "")
, test "disallow first strand longer" <|
\() -> Expect.equal Nothing (distance "AATG" "AAA")
, test "disallow second strand longer" <|
\() -> Expect.equal Nothing (distance "ATA" "AGTG")
]