Ajoute les visualisations des couleurs de têtes de minifigs et jalons

tests/test_minifig_heads_plot.py

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+"""Tests des visualisations des couleurs de têtes de minifigs."""
+
+import matplotlib
+from pathlib import Path
+
+from lib.plots.minifig_heads import plot_global_shares, plot_shares_by_year
+
+
+matplotlib.use("Agg")
+
+
+def test_plot_minifig_heads(tmp_path: Path) -> None:
+    """Produit les graphes part par année et global."""
+    heads_path = tmp_path / "minifig_heads_by_year.csv"
+    milestones_path = tmp_path / "milestones.csv"
+    shares_dest = tmp_path / "figures" / "step16" / "minifig_heads_shares.png"
+    global_dest = tmp_path / "figures" / "step16" / "minifig_heads_global.png"
+    heads_path.write_text(
+        "year,color_rgb,is_translucent,color_name,quantity\n"
+        "2020,FFE1BD,false,Light Flesh,2\n"
+        "2020,FFFF00,false,Yellow,1\n"
+        "2021,FFE1BD,false,Light Flesh,1\n"
+        "2021,E7B68F,false,Medium Dark Flesh,3\n"
+    )
+    milestones_path.write_text("year,description\n2020,Jalon Test\n")
+
+    plot_shares_by_year(heads_path, shares_dest, milestones_path=milestones_path)
+    plot_global_shares(heads_path, global_dest)
+
+    assert shares_dest.exists()
+    assert shares_dest.stat().st_size > 0
+    assert global_dest.exists()
+    assert global_dest.stat().st_size > 0