🐐 Hash tables

tests/08_test_tabulas_.py

@@ -189,3 +189,34 @@ class TestDictDisplay(unittest.TestCase):
   @parameterized.expand(dict_display_tests)
   def test_dict_display(self, source, nodes, value, output):
     run_test(self, source, nodes, value, output)
+
+
+class TestDictGrowth(unittest.TestCase):
+  def test_dict_growth_preserves_order_and_lookup(self):
+    # Inserts XX entries via PER; pushes the compiled dict through
+    # multiple rehashes (initial cap=4) and verifies that lookup, length,
+    # and insertion-order iteration all still hold afterwards.
+    source = (
+      "DESIGNA d VT TABVLA {}\n"
+      "PER i IN [I VSQVE XX] FAC {\n"
+      "DESIGNA d[i] VT i * II\n"
+      "}\n"
+      "DIC(d[X])\n"
+      "DIC(LONGITVDO(d))\n"
+      "DIC(CLAVES(d))"
+    )
+    nodes = Program([], [
+      Designa(ID("d"), DataDict([])),
+      PerStatement(
+        DataRangeArray(Numeral("I"), Numeral("XX")),
+        ID("i"),
+        [DesignaIndex(ID("d"), [ID("i")],
+                      BinOp(ID("i"), Numeral("II"), "SYMBOL_TIMES"))],
+      ),
+      ExpressionStatement(BuiltIn("DIC", [ArrayIndex(ID("d"), Numeral("X"))])),
+      ExpressionStatement(BuiltIn("DIC", [BuiltIn("LONGITVDO", [ID("d")])])),
+      ExpressionStatement(BuiltIn("DIC", [BuiltIn("CLAVES", [ID("d")])])),
+    ])
+    keys_str = "[" + " ".join(int_to_num(i, False) for i in range(1, 21)) + "]"
+    output = f"XX\nXX\n{keys_str}\n"
+    run_test(self, source, nodes, ValStr(keys_str), output)