Ajoute le graphique des personnages représentés

tests/test_minifig_characters.py

@@ -0,0 +1,37 @@
+"""Tests de l'agrégation des minifigs par personnage."""
+
+from pathlib import Path
+
+from lib.rebrickable.minifig_characters import aggregate_by_character, write_character_counts
+
+
+def test_aggregate_by_character_counts_unique_figs() -> None:
+    """Compter les minifigs distinctes par personnage en excluant les noms vides."""
+    aggregates = aggregate_by_character(
+        [
+            {"set_num": "123-1", "part_num": "head-a", "known_character": "Owen Grady", "fig_num": "fig-owen-1"},
+            {"set_num": "124-1", "part_num": "head-b", "known_character": "Owen Grady", "fig_num": "fig-owen-1"},
+            {"set_num": "125-1", "part_num": "head-c", "known_character": "Owen Grady", "fig_num": "fig-owen-2"},
+            {"set_num": "126-1", "part_num": "head-d", "known_character": "Figurant", "fig_num": "fig-guard-1"},
+            {"set_num": "128-1", "part_num": "head-f", "known_character": "Figurant", "fig_num": "fig-guard-1"},
+            {"set_num": "129-1", "part_num": "head-g", "known_character": "", "fig_num": "fig-guard-2"},
+        ]
+    )
+
+    assert aggregates == [
+        {"known_character": "Owen Grady", "minifig_count": 2},
+        {"known_character": "Figurant", "minifig_count": 1},
+    ]
+
+
+def test_write_character_counts_outputs_csv(tmp_path: Path) -> None:
+    """Écrit le CSV des comptes par personnage."""
+    destination = tmp_path / "counts.csv"
+    rows = [
+        {"known_character": "A", "minifig_count": 2},
+        {"known_character": "B", "minifig_count": 1},
+    ]
+
+    write_character_counts(destination, rows)
+
+    assert destination.read_text() == "known_character,minifig_count\nA,2\nB,1\n"

tests/test_minifig_characters_plot.py

@@ -0,0 +1,25 @@
+"""Tests du graphique minifigs par personnage."""
+
+import matplotlib
+from pathlib import Path
+
+from lib.plots.minifig_characters import plot_minifigs_per_character
+
+
+matplotlib.use("Agg")
+
+
+def test_plot_minifigs_per_character(tmp_path: Path) -> None:
+    """Génère l'image de comptage par personnage."""
+    counts_path = tmp_path / "counts.csv"
+    destination = tmp_path / "figures" / "step22" / "minifig_characters.png"
+    counts_path.write_text(
+        "known_character,minifig_count\n"
+        "Owen Grady,2\n"
+        "Figurant,1\n"
+    )
+
+    plot_minifigs_per_character(counts_path, destination)
+
+    assert destination.exists()
+    assert destination.stat().st_size > 0