diff --git a/tests/cli/report-interval.test b/tests/cli/report-interval.test
new file mode 100644
index 000000000..a7fd0112d
--- /dev/null
+++ b/tests/cli/report-interval.test
@@ -0,0 +1,53 @@
+
+# Input for the following tests:
+
+2019-01-01
+    (a)   2
+
+2019-02-01
+    (a)   1
+
+
+
+
+# The last report interval option takes precedence.
+
+$ hledger -f- register --weekly --monthly
+2019/01                 a                                        2             2
+2019/02                 a                                        1             3
+
+$ hledger -f- register --monthly --weekly
+2018/12/31w01           a                                        2             2
+2019/01/28w05           a                                        1             3
+
+# The last report interval option takes precedence.
+# The --period expression is no exception.
+$ hledger -f- register -p 'monthly in 2019' --weekly
+2018/12/31w01           a                                        2             2
+2019/01/28w05           a                                        1             3
+
+$ hledger -f- register --weekly -p 'monthly in 2019'
+2019/01                 a                                        2             2
+2019/02                 a                                        1             3
+
+
+
+# The next three tests test the bugfix for issue #1008:
+# The report interval from an --period expression only counts if it is
+# explicitly specified (e.g. -p 'monthly in ...').
+# Thus, the following three options are equivalent:
+# --monthly -p2019
+# -p2019 --monthly
+# -p 'monthly in 2019'
+
+$ hledger -f- register --monthly -p 2019
+2019/01                 a                                        2             2
+2019/02                 a                                        1             3
+
+$ hledger -f- register -p 2019 --monthly
+2019/01                 a                                        2             2
+2019/02                 a                                        1             3
+
+$ hledger -f- register -p 'monthly in 2019'
+2019/01                 a                                        2             2
+2019/02                 a                                        1             3