exercism/elixir/rpn-calculator/test/rpn_calculator_test.exs

56 lines
1.8 KiB
Elixir

defmodule RPNCalculatorTest do
use ExUnit.Case
@tag task_id: 1
test "calculate! returns what the operation does: :ok atom" do
assert RPNCalculator.calculate!([], fn _ -> :ok end) == :ok
end
@tag task_id: 1
test "calculate! returns what the operation does: an ok string" do
assert RPNCalculator.calculate!([], fn _ -> "ok" end) == "ok"
end
@tag task_id: 1
test "let it crash" do
assert_raise(RuntimeError, fn ->
RPNCalculator.calculate!([], fn _ -> raise "test error" end)
end)
end
@tag task_id: 2
test "calculate returns the result of the operation (a string) wrapped in an :ok tuple" do
assert RPNCalculator.calculate([], fn _ -> "operation completed" end) ==
{:ok, "operation completed"}
end
@tag task_id: 2
test "calculate returns the result of the operation (an atom) wrapped in an :ok tuple" do
assert RPNCalculator.calculate([], fn _ -> :success end) ==
{:ok, :success}
end
@tag task_id: 2
test "rescue the crash, no message" do
assert RPNCalculator.calculate([], fn _ -> raise "test error" end) == :error
end
@tag task_id: 3
test "calculate_verbose returns the result of the operation (a string) wrapped in an :ok tuple" do
assert RPNCalculator.calculate_verbose([], fn _ -> "operation completed" end) ==
{:ok, "operation completed"}
end
@tag task_id: 3
test "calculate_verbose returns the result of the operation (an atom) wrapped in an :ok tuple" do
assert RPNCalculator.calculate_verbose([], fn _ -> :success end) ==
{:ok, :success}
end
@tag task_id: 3
test "rescue the crash, get error tuple with message" do
assert RPNCalculator.calculate_verbose([], fn _ -> raise ArgumentError, "test error" end) ==
{:error, "test error"}
end
end