Complète l’étape 26 avec l’évolution minifigs/set

tests/test_minifig_parts_correlation.py

@@ -2,7 +2,7 @@
 
 from pathlib import Path
 
-from lib.rebrickable.minifig_parts_correlation import build_correlation_rows
+from lib.rebrickable.minifig_parts_correlation import build_correlation_rows, build_minifigs_per_year
 
 
 def write_csv(path: Path, content: str) -> None:
@@ -68,3 +68,56 @@ def test_build_correlation_rows_merges_filtered_and_catalog(tmp_path: Path) -> N
         {"scope": "catalog", "set_num": "124-1", "num_parts": "150", "minifig_count": "1"},
         {"scope": "catalog", "set_num": "200-1", "num_parts": "100", "minifig_count": "3"},
     ]
+
+
+def test_build_minifigs_per_year_computes_averages(tmp_path: Path) -> None:
+    """Calcule les moyennes annuelles minifigs/set pour filtrés et catalogue."""
+    filtered_counts_path = tmp_path / "minifig_counts_by_set.csv"
+    write_csv(
+        filtered_counts_path,
+        "set_num,set_id,name,year,minifig_count\n"
+        "123-1,123,Set A,2020,2\n"
+        "124-1,124,Set B,2020,1\n"
+        "125-1,125,Set C,2021,3\n",
+    )
+    all_sets_path = tmp_path / "sets.csv"
+    write_csv(
+        all_sets_path,
+        "set_num,name,year,theme_id,num_parts\n"
+        "123-1,Set A,2020,1,300\n"
+        "124-1,Set B,2020,1,150\n"
+        "125-1,Set C,2021,1,100\n"
+        "200-1,Set D,2020,1,50\n",
+    )
+    inventories_path = tmp_path / "inventories.csv"
+    write_csv(
+        inventories_path,
+        "id,version,set_num\n"
+        "10,1,123-1\n"
+        "20,1,124-1\n"
+        "30,1,125-1\n"
+        "40,1,200-1\n",
+    )
+    inventory_minifigs_path = tmp_path / "inventory_minifigs.csv"
+    write_csv(
+        inventory_minifigs_path,
+        "inventory_id,fig_num,quantity\n"
+        "10,fig-a,2\n"
+        "20,fig-b,1\n"
+        "30,fig-c,3\n"
+        "40,fig-d,4\n",
+    )
+
+    rows = build_minifigs_per_year(
+        filtered_counts_path,
+        all_sets_path,
+        inventories_path,
+        inventory_minifigs_path,
+    )
+
+    assert rows == [
+        {"scope": "filtered", "year": "2020", "average_minifigs_per_set": "1.500", "set_count": "2"},
+        {"scope": "filtered", "year": "2021", "average_minifigs_per_set": "3.000", "set_count": "1"},
+        {"scope": "catalog", "year": "2020", "average_minifigs_per_set": "2.333", "set_count": "3"},
+        {"scope": "catalog", "year": "2021", "average_minifigs_per_set": "3.000", "set_count": "1"},
+    ]

tests/test_minifig_parts_timeline_plot.py

@@ -0,0 +1,27 @@
+"""Tests du graphique d'évolution minifigs/set."""
+
+import matplotlib
+from pathlib import Path
+
+from lib.plots.minifig_parts_timeline import plot_minifigs_per_set_timeline
+
+
+matplotlib.use("Agg")
+
+
+def test_plot_minifigs_per_set_timeline(tmp_path: Path) -> None:
+    """Génère la courbe minifigs/set."""
+    timeline_path = tmp_path / "minifigs_per_set_timeline.csv"
+    destination = tmp_path / "figures" / "step26" / "minifigs_per_set_timeline.png"
+    timeline_path.write_text(
+        "scope,year,average_minifigs_per_set,set_count\n"
+        "filtered,2020,1.500,2\n"
+        "filtered,2021,2.000,1\n"
+        "catalog,2020,1.000,3\n"
+        "catalog,2021,2.500,2\n"
+    )
+
+    plot_minifigs_per_set_timeline(timeline_path, destination)
+
+    assert destination.exists()
+    assert destination.stat().st_size > 0