Caesar cipher curriculum (#302)

* caesar cipher curriculum + tests

tests/test_caesar_cipher.py

@@ -2,7 +2,7 @@
 
 import pytest
 
-from reasoning_gym.algorithmic.caesar_cipher import CaesarCipherConfig, CaesarCipherDataset
+from reasoning_gym.algorithmic.caesar_cipher import CaesarCipherConfig, CaesarCipherCurriculum, CaesarCipherDataset
 
 
 def test_caesar_cipher_config_validation():
@@ -98,3 +98,48 @@ def test_caesar_cipher_iteration():
 
     # Test multiple iterations yield same items
     assert items == list(dataset)
+
+
+def test_caesar_cipher_curriculum():
+    curriculum = CaesarCipherCurriculum()
+    base_value = {"size": 150, "seed": 1}
+
+    base_cfg: CaesarCipherConfig = curriculum.generate_configuration(base_value)
+    assert base_cfg.seed == 1
+    assert base_cfg.size == 150
+    assert base_cfg.min_rotation == base_cfg.max_rotation == 5
+    assert base_cfg.min_words == base_cfg.max_words == 5
+
+    curriculum.increment_attr_level("rotation")
+    cfg = curriculum.generate_configuration(base_value)
+    assert cfg.min_rotation == 5
+    assert cfg.max_rotation == 10
+
+    curriculum.increment_attr_level("words")
+    cfg = curriculum.generate_configuration(base_value)
+    assert cfg.min_words == 5
+    assert cfg.max_words == 10
+
+    curriculum.increment_attr_level("rotation")
+    curriculum.increment_attr_level("words")
+    cfg = curriculum.generate_configuration(base_value)
+    assert cfg.min_rotation == 5
+    assert cfg.max_rotation == 15
+    assert cfg.min_words == 5
+    assert cfg.max_words == 15
+
+    curriculum.increment_attr_level("rotation")
+    curriculum.increment_attr_level("words")
+    cfg = curriculum.generate_configuration(base_value)
+    assert cfg.min_rotation == 5
+    assert cfg.max_rotation == 25
+    assert cfg.min_words == 5
+    assert cfg.max_words == 25
+
+    curriculum.decrement_attr_level("rotation")
+    curriculum.decrement_attr_level("words")
+    cfg = curriculum.generate_configuration(base_value)
+    assert cfg.min_rotation == 5
+    assert cfg.max_rotation == 15
+    assert cfg.min_words == 5
+    assert cfg.max_words == 15