More consting goodness

[p5sagit/p5-mst-13.2.git] / t / io / utf8.t

diff --git a/t/io/utf8.t b/t/io/utf8.t
index 50cc012..721d7db 100755 (executable)
--- a/t/io/utf8.t
+++ b/t/io/utf8.t
@@ -13,7 +13,7 @@ no utf8; # needed for use utf8 not griping about the raw octets
 
 require "./test.pl";
 
-plan(tests => 51);
+plan(tests => 53);
 
 $| = 1;
 
@@ -306,15 +306,42 @@ ok( 1 );
     open F, ">a";
     binmode F, ":utf8";
     syswrite(F, $a = chr(0x100));
-    close A;
+    close F;
     is( ord($a), 0x100, '23428 syswrite should not downgrade scalar' );
     like( $a, qr/^\w+/, '23428 syswrite should not downgrade scalar' );
 }
 
 # sysread() and syswrite() tested in lib/open.t since Fcntl is used
 
+{
+    # <FH> on a :utf8 stream should complain immediately with -w
+    # if it finds bad UTF-8 (:encoding(utf8) works this way)
+    use warnings 'utf8';
+    undef $@;
+    local $SIG{__WARN__} = sub { $@ = shift };
+    open F, ">a";
+    binmode F;
+    my ($chrE4, $chrF6) = (chr(0xE4), chr(0xF6));
+    if (ord('A') == 193)       # EBCDIC
+    { ($chrE4, $chrF6) = (chr(0x43), chr(0xEC)); }
+    print F "foo", $chrE4, "\n";
+    print F "foo", $chrF6, "\n";
+    close F;
+    open F, "<:utf8", "a";
+    undef $@;
+    my $line = <F>;
+    my ($chrE4, $chrF6) = ("E4", "F6");
+    if (ord('A') == 193) { ($chrE4, $chrF6) = ("43", "EC"); } # EBCDIC
+    like( $@, qr/utf8 "\\x$chrE4" does not map to Unicode .+ <F> line 1/,
+         "<:utf8 readline must warn about bad utf8");
+    undef $@;
+    $line .= <F>;
+    like( $@, qr/utf8 "\\x$chrF6" does not map to Unicode .+ <F> line 2/,
+         "<:utf8 rcatline must warn about bad utf8");
+    close F;
+}
+
 END {
     1 while unlink "a";
     1 while unlink "b";
 }
-