birdy_chat/test/birdy_chat_web/api/messages_test.exs

69 lines
2.2 KiB
Elixir

defmodule BirdyChatWeb.Api.MessagesTest do
use BirdyChatWeb.ConnCase
setup %{conn: conn} do
url = ~p"/api/messages"
path = Application.app_dir(:birdy_chat, ["priv", "messages", "test-user.txt"])
on_exit(fn -> File.rm(path) end)
conn =
conn
|> put_req_header("content-type", "application/json")
%{conn: conn, url: url}
end
describe "POST /api/messages" do
test "returns errors for invalid message", %{conn: conn, url: url} do
payload = Jason.encode!(%{})
conn = post(conn, url, payload)
assert result = json_response(conn, :unprocessable_entity)
expected_result = %{
"errors" => %{
"from" => ["can't be blank"],
"message" => ["can't be blank"],
"to" => ["can't be blank"]
}
}
assert result == expected_result
end
test "returns message and 201 when successful", %{conn: conn, url: url} do
message = %{"from" => "2-user", "to" => "1-user", "message" => "123"}
payload = Jason.encode!(message)
conn = post(conn, url, payload)
assert result = json_response(conn, :created)
assert result == message
end
test "writes message to file", %{conn: conn, url: url} do
message = %{"from" => "2-user", "to" => "test-user", "message" => "123"}
payload = Jason.encode!(message)
conn = post(conn, url, payload)
assert result = json_response(conn, :created)
assert result == message
path = Application.app_dir(:birdy_chat, ["priv", "messages", "test-user.txt"])
contents = File.read!(path)
assert contents == "2-user: 123\n"
end
test "appends message to file", %{conn: conn, url: url} do
message = %{"from" => "2-user", "to" => "test-user", "message" => "123"}
payload = Jason.encode!(message)
post(conn, url, payload)
message = %{"from" => "2-user", "to" => "test-user", "message" => "456"}
payload = Jason.encode!(message)
conn = post(conn, url, payload)
assert json_response(conn, :created)
path = Application.app_dir(:birdy_chat, ["priv", "messages", "test-user.txt"])
contents = File.read!(path)
assert contents == "2-user: 123\n2-user: 456\n"
end
end
end