Explicitly check that our $_; is special, and forced to main::

[p5sagit/p5-mst-13.2.git] / t / op / do.t

diff --git a/t/op/do.t b/t/op/do.t
old mode 100755 (executable)
new mode 100644 (file)
index 913481f..e47441a
--- a/t/op/do.t
+++ b/t/op/do.t
@@ -1,7 +1,5 @@
 #!./perl
 
-# $RCSfile: do.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:45 $
-
 sub foo1
 {
     ok($_[0]);
@@ -31,17 +29,23 @@ sub ok {
     return $ok;
 }
 
-print "1..20\n";
+print "1..50\n";
 
 # Test do &sub and proper @_ handling.
 $_[0] = 0;
-$result = do foo1(1);
+{
+    no warnings 'deprecated';
+    $result = do foo1(1);
+}
 
 ok( $result eq 'value',  ":$result: eq :value:" );
 ok( $_[0] == 0 );
 
 $_[0] = 0;
-$result = do foo2(0,1,0);
+{
+    no warnings 'deprecated';
+    $result = do foo2(0,1,0);
+}
 ok( $result eq 'value', ":$result: eq :value:" );
 ok( $_[0] == 0 );
 
@@ -52,40 +56,140 @@ sub blather {
     ok 1 foreach @_;
 }
 
-do blather("ayep","sho nuff");
+{
+    no warnings 'deprecated';
+    do blather("ayep","sho nuff");
+}
 @x = ("jeepers", "okydoke");
 @y = ("uhhuh", "yeppers");
-do blather(@x,"noofie",@y);
+{
+    no warnings 'deprecated';
+    do blather(@x,"noofie",@y);
+}
 
 unshift @INC, '.';
 
 if (open(DO, ">$$.16")) {
     print DO "ok(1, 'do in scalar context') if defined wantarray && not wantarray\n";
-    close DO;
+    close DO or die "Could not close: $!";
 }
 
-my $a = do "$$.16";
+my $a = do "$$.16"; die $@ if $@;
 
 if (open(DO, ">$$.17")) {
     print DO "ok(1, 'do in list context') if defined wantarray &&     wantarray\n";
-    close DO;
+    close DO or die "Could not close: $!";
 }
 
-my @a = do "$$.17";
+my @a = do "$$.17"; die $@ if $@;
 
 if (open(DO, ">$$.18")) {
     print DO "ok(1, 'do in void context') if not defined wantarray\n";
-    close DO;
+    close DO or die "Could not close: $!";
 }
 
-do "$$.18";
+do "$$.18"; die $@ if $@;
 
 # bug ID 20010920.007
 eval qq{ do qq(a file that does not exist); };
-ok( !$@ );
+ok( !$@, "do on a non-existing file, first try" );
 
 eval qq{ do uc qq(a file that does not exist); };
-ok( !$@ );
+ok( !$@, "do on a non-existing file, second try"  );
+
+# 6 must be interpreted as a file name here
+ok( (!defined do 6) && $!, "'do 6' : $!" );
+
+# [perl #19545]
+push @t, ($u = (do {} . "This should be pushed."));
+ok( $#t == 0, "empty do result value" );
+
+$zok = '';
+$owww = do { 1 if $zok };
+ok( $owww eq '', 'last is unless' );
+$owww = do { 2 unless not $zok };
+ok( $owww == 1, 'last is if not' );
+
+$zok = 'swish';
+$owww = do { 3 unless $zok };
+ok( $owww eq 'swish', 'last is unless' );
+$owww = do { 4 if not $zok };
+ok( $owww eq '', 'last is if not' );
+
+# [perl #38809]
+@a = (7);
+$x = sub { do { return do { @a } }; 2 }->();
+ok(defined $x && $x == 1, 'return do { } receives caller scalar context');
+@x = sub { do { return do { @a } }; 2 }->();
+ok("@x" eq "7", 'return do { } receives caller list context');
+
+@a = (7, 8);
+$x = sub { do { return do { 1; @a } }; 3 }->();
+ok(defined $x && $x == 2, 'return do { ; } receives caller scalar context');
+@x = sub { do { return do { 1; @a } }; 3 }->();
+ok("@x" eq "7 8", 'return do { ; } receives caller list context');
+
+@b = (11 .. 15);
+$x = sub { do { return do { 1; @a, @b } }; 3 }->();
+ok(defined $x && $x == 5, 'return do { ; , } receives caller scalar context');
+@x = sub { do { return do { 1; @a, @b } }; 3 }->();
+ok("@x" eq "7 8 11 12 13 14 15", 'return do { ; , } receives caller list context');
+
+$x = sub { do { return do { 1; @a }, do { 2; @b } }; 3 }->();
+ok(defined $x && $x == 5, 'return do { ; }, do { ; } receives caller scalar context');
+@x = sub { do { return do { 1; @a }, do { 2; @b } }; 3 }->();
+ok("@x" eq "7 8 11 12 13 14 15", 'return do { ; }, do { ; } receives caller list context');
+
+@a = (7, 8, 9);
+$x = sub { do { do { 1; return @a } }; 4 }->();
+ok(defined $x && $x == 3, 'do { return } receives caller scalar context');
+@x = sub { do { do { 1; return @a } }; 4 }->();
+ok("@x" eq "7 8 9", 'do { return } receives caller list context');
+
+@a = (7, 8, 9, 10);
+$x = sub { do { return do { 1; do { 2; @a } } }; 5 }->();
+ok(defined $x && $x == 4, 'return do { do { ; } } receives caller scalar context');
+@x = sub { do { return do { 1; do { 2; @a } } }; 5 }->();
+ok("@x" eq "7 8 9 10", 'return do { do { ; } } receives caller list context');
+
+# Do blocks created by constant folding
+# [perl #68108]
+$x = sub { if (1) { 20 } }->();
+ok($x == 20, 'if (1) { $x } receives caller scalar context');
+
+@a = (21 .. 23);
+$x = sub { if (1) { @a } }->();
+ok($x == 3, 'if (1) { @a } receives caller scalar context');
+@x = sub { if (1) { @a } }->();
+ok("@x" eq "21 22 23", 'if (1) { @a } receives caller list context');
+
+$x = sub { if (1) { 0; 20 } }->();
+ok($x == 20, 'if (1) { ...; $x } receives caller scalar context');
+
+@a = (24 .. 27);
+$x = sub { if (1) { 0; @a } }->();
+ok($x == 4, 'if (1) { ...; @a } receives caller scalar context');
+@x = sub { if (1) { 0; @a } }->();
+ok("@x" eq "24 25 26 27", 'if (1) { ...; @a } receives caller list context');
+
+$x = sub { if (1) { 0; 20 } else{} }->();
+ok($x == 20, 'if (1) { ...; $x } else{} receives caller scalar context');
+
+@a = (24 .. 27);
+$x = sub { if (1) { 0; @a } else{} }->();
+ok($x == 4, 'if (1) { ...; @a } else{} receives caller scalar context');
+@x = sub { if (1) { 0; @a } else{} }->();
+ok("@x" eq "24 25 26 27", 'if (1) { ...; @a } else{} receives caller list context');
+
+$x = sub { if (0){} else { 0; 20 } }->();
+ok($x == 20, 'if (0){} else { ...; $x } receives caller scalar context');
+
+@a = (24 .. 27);
+$x = sub { if (0){} else { 0; @a } }->();
+ok($x == 4, 'if (0){} else { ...; @a } receives caller scalar context');
+@x = sub { if (0){} else { 0; @a } }->();
+ok("@x" eq "24 25 26 27", 'if (0){} else { ...; @a } receives caller list context');
+
 
 END {
     1 while unlink("$$.16", "$$.17", "$$.18");