Add app route tests and fix stale assertions

tests/test_app.py

@@ -0,0 +1,74 @@
+import app as app_module
+
+
+def _client():
+    app_module.app.config['TESTING'] = True
+    return app_module.app.test_client()
+
+
+def _stub_data(monkeypatch):
+    monkeypatch.setattr(app_module, 'get_cached', lambda key: None)
+    monkeypatch.setattr(app_module, 'set_cached', lambda key, data: None)
+    monkeypatch.setattr(
+        app_module.rtt_scraper,
+        'fetch',
+        lambda travel_date, user_agent: [
+            {'depart_bristol': '07:00', 'arrive_paddington': '08:45', 'headcode': '1A23'},
+        ],
+    )
+    monkeypatch.setattr(
+        app_module.eurostar_scraper,
+        'fetch',
+        lambda destination, travel_date, user_agent: [
+            {
+                'depart_st_pancras': '10:01',
+                'arrive_destination': '13:34',
+                'destination': destination,
+                'train_number': 'ES 9014',
+            },
+        ],
+    )
+    monkeypatch.setattr(
+        app_module.eurostar_scraper,
+        'timetable_url',
+        lambda destination: f'https://example.test/{destination.lower().replace(" ", "-")}',
+    )
+
+
+def test_index_shows_fixed_departure_and_destination_radios():
+    client = _client()
+
+    resp = client.get('/')
+    html = resp.get_data(as_text=True)
+
+    assert resp.status_code == 200
+    assert 'Departure point' in html
+    assert 'Bristol Temple Meads' in html
+    assert html.count('type="radio"') == len(app_module.DESTINATIONS)
+    assert 'destination-rotterdam' in html
+
+
+def test_search_redirects_to_results_with_selected_params():
+    client = _client()
+
+    resp = client.get('/search?destination=rotterdam&travel_date=2026-04-10&min_connection=60&max_connection=120')
+
+    assert resp.status_code == 302
+    assert resp.headers['Location'].endswith(
+        '/results/rotterdam/2026-04-10?min_connection=60&max_connection=120'
+    )
+
+
+def test_results_shows_same_day_destination_switcher(monkeypatch):
+    _stub_data(monkeypatch)
+    client = _client()
+
+    resp = client.get('/results/paris/2026-04-10?min_connection=60&max_connection=120')
+    html = resp.get_data(as_text=True)
+
+    assert resp.status_code == 200
+    assert 'Switch destination for Friday 10 April 2026' in html
+    assert '<span class="chip-current">Paris Gare du Nord</span>' in html
+    assert '/results/brussels/2026-04-10?min_connection=60&amp;max_connection=120' in html
+    assert '/results/rotterdam/2026-04-10?min_connection=60&amp;max_connection=120' in html
+    assert 'ES 9014' in html