Add test and lint

sleap/gui/state.py

@@ -83,7 +83,9 @@ def toggle(self, key: GSVarType, default: bool = False):
         """Toggle boolean value for specified key."""
         self[key] = not self.get(key, default=default)
 
-    def increment(self, key: GSVarType, step: int = 1, mod: Optional[int] = None, default: int = 0):
+    def increment(
+        self, key: GSVarType, step: int = 1, mod: Optional[int] = None, default: int = 0
+    ):
         """Increment numeric value for specified key.
 
         Args:
@@ -98,7 +100,7 @@ def increment(self, key: GSVarType, step: int = 1, mod: Optional[int] = None, de
         if key not in self._state_vars:
             self[key] = default
             return
-        
+
         new_value = self.get(key) + step
 
         # Wrap the value if it's out of bounds.

tests/gui/test_state.py

@@ -50,9 +50,14 @@ def set_y_from_val_param_callback(x):
     assert times_x_changed == 4
     assert state["x"] == 2
 
+    # Test incrementing value with modulus of 1
+    state.increment("x", mod=1)
+    assert times_x_changed == 5
+    assert state["x"] == 0
+
     # test emitting callbacks without changing value
     state.emit("x")
-    assert times_x_changed == 5
+    assert times_x_changed == 6
 
 
 def test_gui_state_bool():