Change max_hd and current_hd in level.setter

dnd_character/character.py

@@ -533,6 +533,11 @@ def level(self, new_level):
                 self.hd, new_level, self.constitution
             )
         self.max_hp = Character.maximum_hp(self.hd, new_level, self.constitution)
+        if self.current_hd == self.max_hd:
+            self.current_hd = new_level
+        self.max_hd = new_level
+        if self.current_hd > self.max_hd:
+            self.current_hd = self.max_hd
         self.applyClassLevel()
 
     def removeShields(self):

tests/test_hit_dice.py

@@ -0,0 +1,27 @@
+from dnd_character.classes import Barbarian, Rogue, Sorcerer
+
+
+def test_hd_for_barb_rogue_sorc():
+    barb = Barbarian()
+    rogue = Rogue()
+    sorc = Sorcerer()
+    assert barb.hd == 12
+    assert rogue.hd == 8
+    assert sorc.hd == 6
+
+
+def test_max_hd_at_level_1():
+    barb = Barbarian(level=1)
+    assert barb.max_hd == 1
+
+
+def test_max_hd_at_level_10():
+    barb = Barbarian(level=10)
+    assert barb.max_hd == 10
+
+
+def test_current_hd_increases_at_level_up():
+    barb = Barbarian(level=1)
+    assert barb.current_hd == 1
+    barb.level = 2
+    assert barb.current_hd == 2