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-rw-r--r--users/grfn/xanthous/test/Xanthous/DataSpec.hs8
1 files changed, 8 insertions, 0 deletions
diff --git a/users/grfn/xanthous/test/Xanthous/DataSpec.hs b/users/grfn/xanthous/test/Xanthous/DataSpec.hs
index 91dc6cea1ba5..1aa250b1a4fe 100644
--- a/users/grfn/xanthous/test/Xanthous/DataSpec.hs
+++ b/users/grfn/xanthous/test/Xanthous/DataSpec.hs
@@ -95,4 +95,12 @@ test = testGroup "Xanthous.Data"
              rots
       ]
     ]
+
+  , testGroup "units"
+    [ testGroup "unit suffixes"
+      [ testCase "density"
+        $ tshow (10000 :: Grams `Per` Cubic Meters)
+          @?= "10000.0 g/m³"
+      ]
+    ]
   ]