add tests #443

Job	Run time
static analysis (Elixir 1.15.x \| Erlang/OTP 26.x)	56s
mix test (Elixir 1.12.x \| Erlang/OTP 22.x)	20s
mix test windows (Elixir 1.13.x \| Erlang/OTP 22.x)	54s
mix test (Elixir 1.12.x \| Erlang/OTP 23.x)	23s
mix test windows (Elixir 1.13.x \| Erlang/OTP 23.x)	1m 3s
mix test (Elixir 1.12.x \| Erlang/OTP 24.x)	20s
mix test windows (Elixir 1.13.x \| Erlang/OTP 24.x)	53s
mix test (Elixir 1.13.x \| Erlang/OTP 22.x)	17s
mix test windows (Elixir 1.13.x \| Erlang/OTP 25.x)	59s
mix test (Elixir 1.13.x \| Erlang/OTP 23.x)	23s
mix test windows (Elixir 1.14.x \| Erlang/OTP 23.x)	1m 25s
mix test (Elixir 1.13.x \| Erlang/OTP 24.x)	18s
mix test windows (Elixir 1.14.x \| Erlang/OTP 24.x)	1m 21s
mix test (Elixir 1.13.x \| Erlang/OTP 25.x)	35s
mix test windows (Elixir 1.14.x \| Erlang/OTP 25.x)	1m 30s
mix test (Elixir 1.14.x \| Erlang/OTP 23.x)	48s
mix test windows (Elixir 1.14.x \| Erlang/OTP 26.x)	1m 24s
mix test (Elixir 1.14.x \| Erlang/OTP 24.x)	42s
mix test windows (Elixir 1.15.x \| Erlang/OTP 24.x)	1m 22s
mix test (Elixir 1.14.x \| Erlang/OTP 25.x)	41s
mix test windows (Elixir 1.15.x \| Erlang/OTP 25.x)	1m 22s
mix test (Elixir 1.14.x \| Erlang/OTP 26.x)	39s
mix test windows (Elixir 1.15.x \| Erlang/OTP 26.x)	1m 24s
mix test (Elixir 1.15.x \| Erlang/OTP 24.x)	39s
mix test (Elixir 1.15.x \| Erlang/OTP 25.x)	38s
mix test (Elixir 1.15.x \| Erlang/OTP 26.x)	38s
	21m 54s

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