berrypod/test/berrypod_web/plugs/analytics_test.exs
jamey f91b47f0c3
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include browser/os/screen_size in e-commerce analytics events
Event call sites (product_view, add_to_cart, checkout_start, purchase)
were only passing visitor_hash and pathname, leaving browser, OS, screen
size and country nil. Add AnalyticsHook.attrs/1 helper to extract common
analytics fields from socket assigns, and use it in all LiveView event
call sites. Checkout controller reads the same fields from the session.

Also fix plug analytics test to clear stale events before assertions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22 21:13:47 +00:00

117 lines
3.0 KiB
Elixir

defmodule BerrypodWeb.Plugs.AnalyticsTest do
use BerrypodWeb.ConnCase, async: false
import Ecto.Query
alias Berrypod.Analytics.{Buffer, Event}
alias Berrypod.Repo
setup do
send(Buffer, :flush)
:timer.sleep(50)
Repo.delete_all(Event)
:ok
end
describe "analytics plug" do
test "records a pageview on GET request", %{conn: conn} do
conn
|> put_req_header("user-agent", "Mozilla/5.0 Chrome/120.0")
|> get(~p"/")
send(Buffer, :flush)
:timer.sleep(50)
events =
from(e in Event, where: e.pathname == "/" and e.name == "pageview")
|> Repo.all()
assert length(events) >= 1
event = hd(events)
assert event.browser == "Chrome"
end
test "does not record on POST request", %{conn: conn} do
count_before = Repo.aggregate(Event, :count)
conn
|> put_req_header("user-agent", "Mozilla/5.0 Chrome/120.0")
|> post(~p"/checkout", %{})
send(Buffer, :flush)
:timer.sleep(50)
count_after = Repo.aggregate(Event, :count)
# POST to /checkout shouldn't create a pageview event via the plug
# (it may fail with a redirect, but the plug should have skipped)
assert count_after == count_before
end
test "skips bots", %{conn: conn} do
count_before = Repo.aggregate(Event, :count)
conn
|> put_req_header("user-agent", "Googlebot/2.1 (+http://www.google.com/bot.html)")
|> get(~p"/")
send(Buffer, :flush)
:timer.sleep(50)
count_after = Repo.aggregate(Event, :count)
assert count_after == count_before
end
test "stores analytics data in session", %{conn: conn} do
conn =
conn
|> put_req_header("user-agent", "Mozilla/5.0 Firefox/121.0")
|> get(~p"/")
assert get_session(conn, "analytics_visitor_hash") |> is_binary()
assert get_session(conn, "analytics_browser") == "Firefox"
end
test "extracts referrer", %{conn: conn} do
conn
|> put_req_header("user-agent", "Mozilla/5.0 Chrome/120.0")
|> put_req_header("referer", "https://www.google.com/search?q=test")
|> get(~p"/")
send(Buffer, :flush)
:timer.sleep(50)
event =
from(e in Event,
where: e.referrer == "google.com",
order_by: [desc: e.inserted_at],
limit: 1
)
|> Repo.one()
assert event
assert event.referrer_source == "Google"
end
test "extracts UTM params", %{conn: conn} do
conn
|> put_req_header("user-agent", "Mozilla/5.0 Chrome/120.0")
|> get(~p"/?utm_source=newsletter&utm_medium=email&utm_campaign=spring")
send(Buffer, :flush)
:timer.sleep(50)
event =
from(e in Event,
where: e.utm_source == "newsletter",
order_by: [desc: e.inserted_at],
limit: 1
)
|> Repo.one()
assert event
assert event.utm_medium == "email"
assert event.utm_campaign == "spring"
end
end
end