;csv: add some commented tests for #1111/#1133

[ci skip]

tests/csv.test

@@ -527,6 +527,65 @@ $  ./hledger-csv
 
 >=0
 
+## 25. A single unbalanced posting with number other than 1 also should not generate a balancing posting.
+#<
+#2019-01-01,1
+#
+#RULES
+#fields date,amount
+#account2 (a)
+#
+#$  ./hledger-csv
+#2019/01/01
+#    (a)                                            1
+#
+#>=0
+#
+## 26. A single zero posting also should not generate a balancing posting.
+## (Really what we'd like is "if the single posting does not require balancing, 
+## no extra posting is generated").
+#<
+#2019-01-01,0
+#
+#RULES
+#fields date,amount
+#account1 a
+#
+#$  ./hledger-csv
+#2019/01/01
+#    a                 0
+#
+#>=0
+
+
+# fields date,amount
+# account2 (a)
+# $ hledger -f a.csv print
+# hledger: "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/a.csv" (line 2, column 1)
+# could not balance this transaction (real postings are off by 1)
+# 2019/01/01
+#     expenses:unknown               1
+#     (a)                           -1
+
+# fields date,
+# account1 (a)
+# amount 0
+# $ hledger -f a.csv print
+# 2019/01/01
+#     (a)
+
+# fields date,
+# account1 a
+# amount 0
+# $ hledger -f a.csv print
+# hledger: "/Users/simon/src/PLAINTEXTACCOUNTING/hledger/a.csv" (line 2, column 1)
+# could not balance this transaction - can't have more than one real posting with no amount (remember to put 2 or more spaces before amounts)
+# 2019/01/01
+#     a
+#     expenses:unknown
+
+
+
 
 # . TODO: without --separator gives obscure error
 #   |