Ajoute l’étape 26 pièces/minifigs

tests/test_minifig_parts_correlation.py

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+"""Tests de la préparation de corrélation pièces/minifigs."""
+
+from pathlib import Path
+
+from lib.rebrickable.minifig_parts_correlation import build_correlation_rows
+
+
+def write_csv(path: Path, content: str) -> None:
+    """Écrit un CSV brut."""
+    path.write_text(content)
+
+
+def test_build_correlation_rows_merges_filtered_and_catalog(tmp_path: Path) -> None:
+    """Construit les lignes de corrélation pour filtrés et catalogue global."""
+    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,2021,1\n",
+    )
+    filtered_sets_path = tmp_path / "sets_enriched.csv"
+    write_csv(
+        filtered_sets_path,
+        "set_num,num_parts\n"
+        "123-1,300\n"
+        "124-1,150\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,2021,1,150\n"
+        "200-1,Set C,2019,1,100\n",
+    )
+    inventories_path = tmp_path / "inventories.csv"
+    write_csv(
+        inventories_path,
+        "id,version,set_num\n"
+        "10,1,123-1\n"
+        "20,2,123-1\n"
+        "30,1,124-1\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,1\n"
+        "20,fig-a,2\n"
+        "30,fig-b,1\n"
+        "40,fig-c,3\n",
+    )
+
+    rows = build_correlation_rows(
+        filtered_counts_path,
+        filtered_sets_path,
+        all_sets_path,
+        inventories_path,
+        inventory_minifigs_path,
+    )
+
+    assert rows == [
+        {"scope": "filtered", "set_num": "123-1", "num_parts": "300", "minifig_count": "2"},
+        {"scope": "filtered", "set_num": "124-1", "num_parts": "150", "minifig_count": "1"},
+        {"scope": "catalog", "set_num": "123-1", "num_parts": "300", "minifig_count": "2"},
+        {"scope": "catalog", "set_num": "124-1", "num_parts": "150", "minifig_count": "1"},
+        {"scope": "catalog", "set_num": "200-1", "num_parts": "100", "minifig_count": "3"},
+    ]

tests/test_minifig_parts_correlation_plot.py

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+"""Tests du graphique de corrélation pièces/minifigs."""
+
+import matplotlib
+from pathlib import Path
+
+from lib.plots.minifig_parts_correlation import plot_minifig_parts_correlation
+
+
+matplotlib.use("Agg")
+
+
+def test_plot_minifig_parts_correlation(tmp_path: Path) -> None:
+    """Génère le graphique comparatif pièces/minifigs."""
+    correlation_path = tmp_path / "minifig_parts_correlation.csv"
+    destination = tmp_path / "figures" / "step26" / "minifig_parts_correlation.png"
+    correlation_path.write_text(
+        "scope,set_num,num_parts,minifig_count\n"
+        "filtered,123-1,300,2\n"
+        "filtered,124-1,150,1\n"
+        "catalog,123-1,300,2\n"
+        "catalog,124-1,150,1\n"
+        "catalog,200-1,100,3\n"
+    )
+
+    plot_minifig_parts_correlation(correlation_path, destination)
+
+    assert destination.exists()
+    assert destination.stat().st_size > 0