diff --git a/test/Tests.hs b/test/Tests.hs
index 3da25a5..17c81fe 100644
--- a/test/Tests.hs
+++ b/test/Tests.hs
@@ -36,6 +36,10 @@ unitTests = testGroup "Unit tests"
   , testCase "buildTree [sun, earth]"
     $ let tree = Node (Region {_regionCenter = P (V3 7.479893535e10 0.0 0.0), _regionCenterOfMass = P (V3 1349963.8779584717 0.0 0.0), _regionMass = 1.98856794474e30, _regionDiameter = 1.495978707e11}) (Empty (Region {_regionCenter = P (V3 1.12198403025e11 3.7399467675e10 (-3.7399467675e10)), _regionCenterOfMass = P (V3 1.495978707e11 0.0 0.0), _regionMass = 8.97237e24, _regionDiameter = 7.479893535e10})) (Empty (Region {_regionCenter = P (V3 3.7399467675e10 3.7399467675e10 (-3.7399467675e10)), _regionCenterOfMass = P (V3 1.495978707e11 0.0 0.0), _regionMass = 8.97237e24, _regionDiameter = 7.479893535e10})) (Single (Region {_regionCenter = P (V3 3.7399467675e10 (-3.7399467675e10) (-3.7399467675e10)), _regionCenterOfMass = P (V3 674984.9844950008 0.0 0.0), _regionMass = 1.98855897237e30, _regionDiameter = 7.479893535e10}) (Body {_bodyName = "Sun", _bodyRadius = 6.957e8, _bodyMass = 1.98855e30, _bodyPosition = P (V3 0.0 0.0 0.0), _bodySpeed = V3 0.0 0.0 0.0})) (Single (Region {_regionCenter = P (V3 1.12198403025e11 (-3.7399467675e10) (-3.7399467675e10)), _regionCenterOfMass = P (V3 1.495978707e11 0.0 0.0), _regionMass = 1.794474e25, _regionDiameter = 7.479893535e10}) (Body {_bodyName = "Earth", _bodyRadius = 6371000.0, _bodyMass = 8.97237e24, _bodyPosition = P (V3 1.495978707e11 0.0 0.0), _bodySpeed = V3 0.0 29780.0 0.0})) (Empty (Region {_regionCenter = P (V3 1.12198403025e11 3.7399467675e10 3.7399467675e10), _regionCenterOfMass = P (V3 1.495978707e11 0.0 0.0), _regionMass = 8.97237e24, _regionDiameter = 7.479893535e10})) (Empty (Region {_regionCenter = P (V3 3.7399467675e10 3.7399467675e10 3.7399467675e10), _regionCenterOfMass = P (V3 1.495978707e11 0.0 0.0), _regionMass = 8.97237e24, _regionDiameter = 7.479893535e10})) (Empty (Region {_regionCenter = P (V3 3.7399467675e10 (-3.7399467675e10) 3.7399467675e10), _regionCenterOfMass = P (V3 1.495978707e11 0.0 0.0), _regionMass = 8.97237e24, _regionDiameter = 7.479893535e10})) (Empty (Region {_regionCenter = P (V3 1.12198403025e11 (-3.7399467675e10) 3.7399467675e10), _regionCenterOfMass = P (V3 1.495978707e11 0.0 0.0), _regionMass = 8.97237e24, _regionDiameter = 7.479893535e10}))
     in buildTree [sun, earth] @?= tree
+  , testCase "updateAll 1 1 []"
+    $ updateAll 1 1 [] @?= []
+  , testCase "updateAll 0 0.5 [earth]"
+    $ updateAll 0 0.5 [earth] @?= [earth]
   ]
 
 propertyChecks :: TestTree