Add simple caches for ::viacode() and ::vianame().

p4raw-id: //depot/perl@13399

1 files changed, 13 insertions, 1 deletions

diff --git a/lib/charnames.t b/lib/charnames.t
index ce712c36b0..adc4b3f23e 100644
--- a/lib/charnames.t
+++ b/lib/charnames.t
@@ -8,7 +8,7 @@ BEGIN {
 }
 
 $| = 1;
-print "1..20\n";
+print "1..22\n";
 
 use charnames ':full';
 
@@ -146,3 +146,15 @@ sub to_bytes {
 	defined charnames::vianame("NONE SUCH");
     print "ok 20\n";
 }
+
+{
+    # check that caching at least hasn't broken anything
+
+    print "not " unless charnames::viacode(0x1234) eq "ETHIOPIC SYLLABLE SEE";
+    print "ok 21\n";
+
+    print "not " unless
+	sprintf "%04X\n", charnames::vianame("GOTHIC LETTER AHSA") eq "10330";
+    print "ok 22\n";
+
+}