More tests for the 3-arg open

p4raw-id: //depot/perl@16008

2 files changed, 14 insertions, 1 deletions

diff --git a/t/io/open.t b/t/io/open.t
index fa8b10ac6c..a24a5472d7 100755
--- a/t/io/open.t
+++ b/t/io/open.t
@@ -8,9 +8,10 @@ BEGIN {
 
 $|  = 1;
 use warnings;
+use Config;
 $Is_VMS = $^O eq 'VMS';
 
-plan tests => 91;
+plan tests => 94;
 
 my $Perl = which_perl();
 
@@ -223,3 +224,14 @@ like( $@, qr/Bad filehandle:\s+afile/,          '       right error' );
     ok( open(STDOUT,     ">&", $stdout),  'restore dupped STDOUT from lexical fh');
 }
 
+SKIP: {
+    skip "This perl uses perlio", 1 if $Config{useperlio};
+    skip "This system doesn't understand EINVAL", 1 unless exists $!{EINVAL};
+
+    ok( !open(F,'>',\my $s) && $!{EINVAL}, 'open(reference) raises EINVAL' );
+}
+
+{
+    ok( !eval { open F, "BAR", "QUUX" },       'Unknown open() mode' );
+    like( $@, qr/\QUnknown open() mode 'BAR'/, '       right error' );
+}
diff --git a/t/lib/warnings/doio b/t/lib/warnings/doio
index db571957c4..569229d35f 100644
--- a/t/lib/warnings/doio
+++ b/t/lib/warnings/doio
@@ -243,6 +243,7 @@ EOM
 use warnings 'io';
 my $x = "foo";
 open FOO, '>', \$x;
+open BAR, '>&', \*STDOUT; # should not warn
 no warnings 'io';
 open FOO, '>', \$x;
 EXPECT