tests: Added test for POP3 NOOP command

tests/data/Makefile.am

@@ -67,7 +67,7 @@ test800 test801 test802 test803 test804 test805 test806 test807 test808 \
 test809 test810 test811 test812 test813 test814 \
 \
 test850 test851 test852 test853 test854 test855 test856 test857 test858 \
-test859 \
+test859 test860 \
 \
 test900 test901 test902 test903 test904 test905 test906 test907 test908 \
 test909 test910 test911 \

tests/data/test860

@@ -0,0 +1,40 @@
+<testcase>
+<info>
+<keywords>
+POP3
+NOOP
+CUSTOMREQUEST
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+pop3
+</server>
+ <name>
+POP3 NOOP (CUSTOMREQUEST)
+ </name>
+ <command>
+pop3://%HOSTIP:%POP3PORT -u user:secret -X NOOP -I
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+CAPA
+USER user
+PASS secret
+NOOP
+QUIT
+</protocol>
+</verify>
+</testcase>