diff --git a/tests/csv/read.test b/tests/csv/read.test
index f9e56f54e..619ae03e7 100644
--- a/tests/csv/read.test
+++ b/tests/csv/read.test
@@ -44,3 +44,17 @@
 
 >>>2 /using conversion rules file.*t.rules/
 >>>=0
+
+# 5. this should infer display styles correctly
+hledger --rules-file minimal.csv.rules -f- balance --no-total
+<<<
+"2016/1/1","$1"
+"2016/2/2","$1,000.00"
+>>>
+          $-1,001.00  income:unknown
+           $1,001.00  unknown
+>>>=0
+# XXX but doesn't:
+# Got stdout:      
+#            $-1001.00  income:unknown
+#            $1,001.00  unknown