From c5c63cb68ec9820d4bb2bbb739328e9aa4832861 Mon Sep 17 00:00:00 2001
From: Colin Maudry <colin@maudry.com>
Date: Sat, 4 Jul 2026 23:28:14 +0200
Subject: [PATCH] =?UTF-8?q?fix(abonnement):=20calcul=20du=20prix=20TTC=20r?=
 =?UTF-8?q?obuste=20(=C3=A9vite=20les=20artefacts=20flottants)?=
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Remplace le hack `str(int(prix_ht) * 1.2).replace('.0', '')` par
`round(prix_ht * 1.2, 2)` formaté avec `:g`, qui gère correctement les
prix qui ne multiplient pas proprement par 1.2 (ex: 24 -> 28.8 au lieu
de 28.799999999999997).

Le fichier src/pages/compte/abonnement.py contient le même bug mais
n'est pas touché ici : sa copie de _plan_card sera supprimée à la
tâche 4 du plan de refonte du tunnel d'abonnement.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
---
 src/pages/a_propos/abonnement.py |  2 +-
 tests/test_abonnement_public.py  | 47 ++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/src/pages/a_propos/abonnement.py b/src/pages/a_propos/abonnement.py
index 69f00a3..ddf8a1a 100644
--- a/src/pages/a_propos/abonnement.py
+++ b/src/pages/a_propos/abonnement.py
@@ -32,7 +32,7 @@ def _plan_card(meta: dict, trial: int | None):
                 html.H4(meta["label"], className="mb-1"),
                 html.P(
                     f"{meta['prix_ht']} € HT / mois "
-                    f"({str(int(meta['prix_ht']) * 1.2).replace('.0', '')} € TTC)",
+                    f"({round(meta['prix_ht'] * 1.2, 2):g} € TTC)",
                     className="text-muted mb-3",
                 ),
                 html.P(meta["description"], className="mb-3"),
diff --git a/tests/test_abonnement_public.py b/tests/test_abonnement_public.py
index 62e8f0c..0f8a18b 100644
--- a/tests/test_abonnement_public.py
+++ b/tests/test_abonnement_public.py
@@ -60,3 +60,50 @@ def test_cgu_terms_trimmed_of_features_section():
     assert "Fonctionnalités incluses" not in text
     assert "Résiliation" in text
     assert "Tarifs" in text
+
+
+def test_plan_card_ttc_price_for_current_real_prices():
+    from src.app import app  # noqa: F401
+    from src.pages.a_propos import abonnement as page
+
+    simple = str(
+        page._plan_card(
+            {
+                "label": "Abonnement",
+                "prix_ht": 20,
+                "description": "desc",
+            },
+            None,
+        )
+    )
+    assert "24 € TTC" in simple
+
+    soutien = str(
+        page._plan_card(
+            {
+                "label": "Abonnement de soutien",
+                "prix_ht": 50,
+                "description": "desc",
+            },
+            None,
+        )
+    )
+    assert "60 € TTC" in soutien
+
+
+def test_plan_card_ttc_price_avoids_float_artifacts():
+    from src.app import app  # noqa: F401
+    from src.pages.a_propos import abonnement as page
+
+    text = str(
+        page._plan_card(
+            {
+                "label": "Abonnement non-rond",
+                "prix_ht": 24,
+                "description": "desc",
+            },
+            None,
+        )
+    )
+    assert "28.8 € TTC" in text
+    assert "28.799999999999997" not in text