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Contents
if !System.get_env("EXERCISM_TEST_EXAMPLES") do
Code.load_file("collatz_conjecture.exs", __DIR__)
end
ExUnit.start()
ExUnit.configure(exclude: :pending, trace: true)
defmodule CollatzConjectureTest do
use ExUnit.Case
test "zero steps for one" do
assert CollatzConjecture.calc(1) == 0
end
@tag :pending
test "zero is an error" do
assert_raise FunctionClauseError, fn -> CollatzConjecture.calc(0) end
end
@tag :pending
test "divide if even" do
assert CollatzConjecture.calc(16) == 4
end
@tag :pending
test "even and odd steps" do
assert CollatzConjecture.calc(12) == 9
end
@tag :pending
test "Large number of even and odd steps" do
assert CollatzConjecture.calc(1_000_000) == 152
end
@tag :pending
test "start with odd step" do
assert CollatzConjecture.calc(21) == 7
end
@tag :pending
test "more steps than starting number" do
assert CollatzConjecture.calc(7) == 16
end
@tag :pending
test "negative value is an error " do
assert_raise FunctionClauseError, fn -> CollatzConjecture.calc(-15) end
end
@tag :pending
test "string as input value is an error " do
assert_raise FunctionClauseError, fn -> CollatzConjecture.calc("fubar") end
end
end
Version data entries
69 entries across 69 versions & 1 rubygems