exercism/elixir/lucas-numbers/test/lucas_numbers_test.exs

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2024-03-07 12:33:20 +00:00
defmodule LucasNumbersTest do
use ExUnit.Case
@tag task_id: 1
test "generates a sequence of length 1" do
assert LucasNumbers.generate(1) == [2]
end
@tag task_id: 1
test "generates a sequence of length 2" do
assert LucasNumbers.generate(2) == [2, 1]
end
@tag task_id: 2
test "generates a sequence of length 3" do
assert LucasNumbers.generate(3) == [2, 1, 3]
end
@tag task_id: 2
test "generates a sequence of length 4" do
assert LucasNumbers.generate(4) == [2, 1, 3, 4]
end
@tag task_id: 2
test "generates a sequence of length 5" do
sequence = [2, 1, 3, 4, 7]
assert LucasNumbers.generate(5) == sequence
end
@tag task_id: 2
test "generates a sequence of length 6" do
sequence = [2, 1, 3, 4, 7, 11]
assert LucasNumbers.generate(6) == sequence
end
@tag task_id: 2
test "generates a sequence of length 7" do
sequence = [2, 1, 3, 4, 7, 11, 18]
assert LucasNumbers.generate(7) == sequence
end
@tag task_id: 2
test "generates a sequence of length 8" do
sequence = [2, 1, 3, 4, 7, 11, 18, 29]
assert LucasNumbers.generate(8) == sequence
end
@tag task_id: 2
test "generates a sequence of length 9" do
sequence = [2, 1, 3, 4, 7, 11, 18, 29, 47]
assert LucasNumbers.generate(9) == sequence
end
@tag task_id: 2
test "generates a sequence of length 10" do
sequence = [2, 1, 3, 4, 7, 11, 18, 29, 47, 76]
assert LucasNumbers.generate(10) == sequence
end
@tag task_id: 2
test "generates a sequence of length 25" do
sequence = [
2,
1,
3,
4,
7,
11,
18,
29,
47,
76,
123,
199,
322,
521,
843,
1364,
2207,
3571,
5778,
9349,
15127,
24476,
39603,
64079,
103_682
]
assert LucasNumbers.generate(25) == sequence
end
@tag task_id: 3
test "catch incorrect non-integer arguments" do
assert_raise ArgumentError, "count must be specified as an integer >= 1", fn ->
LucasNumbers.generate("Hello world!")
end
end
@tag task_id: 3
test "catch incorrect integer arguments" do
assert_raise ArgumentError, "count must be specified as an integer >= 1", fn ->
LucasNumbers.generate(-1)
end
end
end