working with login and building inventory

trade-hub/backend/tests/test_inventory.py

@@ -0,0 +1,191 @@
+"""Personal inventory tests: auth gating, CRUD, isolation, catalog immutability."""
+from fastapi.testclient import TestClient
+
+from app.api import app
+
+PASSWORD = "correct horse battery staple"
+CARROCK = "ANVL_Carrack"
+RIFLE = "BEHR_Rifle_Ballistic_01"
+
+
+def authed_client(username: str = "alice") -> TestClient:
+    client = TestClient(app)
+    resp = client.post(
+        "/api/v1/auth/register", json={"username": username, "password": PASSWORD}
+    )
+    assert resp.status_code == 201, resp.text
+    return client
+
+
+def add(client: TestClient, class_name: str, quantity: int = 1, notes: str = ""):
+    return client.post(
+        "/api/v1/me/inventory",
+        json={"class_name": class_name, "quantity": quantity, "notes": notes},
+    )
+
+
+def test_new_account_starts_with_empty_inventory():
+    client = authed_client("freshpilot")
+    listing = client.get("/api/v1/me/inventory").json()
+    assert listing["total"] == 0
+    assert listing["items"] == []
+    assert client.get("/api/v1/me/inventory/summary").json() == {
+        "items": 0,
+        "quantity": 0,
+        "categories": {},
+        "unavailable": 0,
+    }
+
+
+def test_inventory_requires_authentication():
+    client = TestClient(app)
+    assert client.get("/api/v1/me/inventory").status_code == 401
+    assert add(client, CARROCK).status_code == 401
+    assert client.get("/api/v1/me/inventory/summary").status_code == 401
+
+
+def test_add_unknown_catalog_item_is_not_found():
+    client = authed_client()
+    assert add(client, "NOPE_Does_Not_Exist").status_code == 404
+
+
+def test_add_creates_enriched_entry():
+    client = authed_client()
+    resp = add(client, CARROCK)
+    assert resp.status_code == 201
+    body = resp.json()
+    assert body["created"] is True
+    entry = body["entry"]
+    assert entry["class_name"] == CARROCK
+    assert entry["name"] == "Anvil Carrack"
+    assert entry["category"] == "ships"
+    assert entry["quantity"] == 1
+    assert entry["available"] is True
+    assert entry["manufacturer"]["code"] == "ANVL"
+
+
+def test_add_same_item_increments_quantity():
+    client = authed_client()
+    assert add(client, CARROCK, quantity=1).status_code == 201
+    resp = add(client, CARROCK, quantity=2, notes="pledged")
+    assert resp.status_code == 200
+    body = resp.json()
+    assert body["created"] is False
+    assert body["entry"]["quantity"] == 3
+    assert body["entry"]["notes"] == "pledged"
+
+    listing = client.get("/api/v1/me/inventory").json()
+    assert listing["total"] == 1
+
+
+def test_inventories_are_isolated_between_users():
+    alice = authed_client("alice")
+    bob = authed_client("bob")
+
+    assert add(alice, CARROCK).status_code == 201
+    assert add(bob, RIFLE).status_code == 201
+
+    alice_items = alice.get("/api/v1/me/inventory").json()["items"]
+    bob_items = bob.get("/api/v1/me/inventory").json()["items"]
+
+    assert [i["class_name"] for i in alice_items] == [CARROCK]
+    assert [i["class_name"] for i in bob_items] == [RIFLE]
+
+
+def test_patch_updates_quantity_and_notes():
+    client = authed_client()
+    assert add(client, CARROCK).status_code == 201
+
+    resp = client.patch(
+        f"/api/v1/me/inventory/{CARROCK}", json={"quantity": 4, "notes": "hangar 3"}
+    )
+    assert resp.status_code == 200
+    body = resp.json()
+    assert body["quantity"] == 4
+    assert body["notes"] == "hangar 3"
+
+
+def test_patch_unknown_entry_is_not_found():
+    client = authed_client()
+    assert client.patch(f"/api/v1/me/inventory/{CARROCK}", json={"quantity": 2}).status_code == 404
+
+
+def test_patch_rejects_zero_quantity():
+    client = authed_client()
+    assert add(client, CARROCK).status_code == 201
+    resp = client.patch(f"/api/v1/me/inventory/{CARROCK}", json={"quantity": 0})
+    assert resp.status_code == 422
+
+
+def test_delete_removes_entry():
+    client = authed_client()
+    assert add(client, CARROCK).status_code == 201
+
+    assert client.delete(f"/api/v1/me/inventory/{CARROCK}").status_code == 204
+    assert client.get("/api/v1/me/inventory").json()["total"] == 0
+    assert client.delete(f"/api/v1/me/inventory/{CARROCK}").status_code == 404
+
+
+def test_list_filters_by_category_and_search():
+    client = authed_client()
+    assert add(client, CARROCK).status_code == 201
+    assert add(client, RIFLE).status_code == 201
+
+    ships = client.get("/api/v1/me/inventory", params={"category": "ships"}).json()
+    assert ships["total"] == 1
+    assert ships["items"][0]["class_name"] == CARROCK
+
+    found = client.get("/api/v1/me/inventory", params={"search": "carrack"}).json()
+    assert found["total"] == 1
+    assert found["items"][0]["class_name"] == CARROCK
+
+
+def test_list_pagination_envelope_and_cap():
+    client = authed_client()
+    assert add(client, CARROCK).status_code == 201
+    assert add(client, RIFLE).status_code == 201
+
+    body = client.get(
+        "/api/v1/me/inventory", params={"page_size": 1, "page": 2}
+    ).json()
+    assert body["total"] == 2
+    assert body["page"] == 2
+    assert body["page_size"] == 1
+    assert body["total_pages"] == 2
+    assert len(body["items"]) == 1
+
+    capped = client.get("/api/v1/me/inventory", params={"page_size": 500}).json()
+    assert capped["page_size"] == 100
+
+
+def test_summary_aggregates_quantity_and_categories():
+    client = authed_client()
+    assert add(client, CARROCK, quantity=2).status_code == 201
+    assert add(client, RIFLE, quantity=3).status_code == 201
+
+    summary = client.get("/api/v1/me/inventory/summary").json()
+    assert summary["items"] == 2
+    assert summary["quantity"] == 5
+    assert summary["unavailable"] == 0
+    assert summary["categories"]["ships"] == 2
+
+
+def test_notes_length_is_bounded():
+    client = authed_client()
+    resp = add(client, CARROCK, notes="x" * 1001)
+    assert resp.status_code == 422
+
+
+def test_catalog_is_not_mutated_by_inventory_operations():
+    client = authed_client()
+    before = client.get("/api/v1/items", params={"page_size": 100}).json()
+
+    assert add(client, CARROCK).status_code == 201
+    client.patch(f"/api/v1/me/inventory/{CARROCK}", json={"quantity": 9})
+    client.delete(f"/api/v1/me/inventory/{CARROCK}")
+
+    after = client.get("/api/v1/items", params={"page_size": 100}).json()
+    assert after == before
+    carrack = client.get(f"/api/v1/items/{CARROCK}").json()
+    assert "quantity" not in carrack
+    assert "notes" not in carrack