Avoid potentially empty struct.

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

diff --git a/t/op/array.t b/t/op/array.t
index 089fb55..472e02c 100755 (executable)
--- a/t/op/array.t
+++ b/t/op/array.t
@@ -1,8 +1,10 @@
 #!./perl
 
-# $RCSfile: array.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:37 $
+print "1..72\n";
 
-print "1..36\n";
+#
+# @foo, @bar, and @ary are also used from tie-stdarray after tie-ing them
+#
 
 @ary = (1,2,3,4,5);
 if (join('',@ary) eq '12345') {print "ok 1\n";} else {print "not ok 1\n";}
@@ -23,9 +25,9 @@ if (join('',@ary) eq '1234') {print "ok 8\n";} else {print "not ok 8\n";}
 
 if ($ary[5] eq '') {print "ok 9\n";} else {print "not ok 9\n";}
 
-$#ary += 1;    # see if we can recover element 5
+$#ary += 1;    # see if element 5 gone for good
 if ($#ary == 5) {print "ok 10\n";} else {print "not ok 10\n";}
-if ($ary[5] == 5) {print "ok 11\n";} else {print "not ok 11\n";}
+if (defined $ary[5]) {print "not ok 11\n";} else {print "ok 11\n";}
 
 $[ = 0;
 @foo = ();
@@ -118,3 +120,130 @@ print $foo eq 'e' ? "ok 35\n" : "not ok 35\n";
 
 $foo = ('a','b','c','d','e','f')[1];
 print $foo eq 'b' ? "ok 36\n" : "not ok 36\n";
+
+@foo = ( 'foo', 'bar', 'burbl');
+push(foo, 'blah');
+print $#foo == 3 ? "ok 37\n" : "not ok 37\n";
+
+# various AASSIGN_COMMON checks (see newASSIGNOP() in op.c)
+
+$test = 37;
+sub t { ++$test; print "not " unless $_[0]; print "ok $test\n"; }
+
+@foo = @foo;
+t("@foo" eq "foo bar burbl blah");                             # 38
+
+(undef,@foo) = @foo;
+t("@foo" eq "bar burbl blah");                                 # 39
+
+@foo = ('XXX',@foo, 'YYY');
+t("@foo" eq "XXX bar burbl blah YYY");                         # 40
+
+@foo = @foo = qw(foo b\a\r bu\\rbl blah);
+t("@foo" eq 'foo b\a\r bu\\rbl blah');                         # 41
+
+@bar = @foo = qw(foo bar);                                     # 42
+t("@foo" eq "foo bar");
+t("@bar" eq "foo bar");                                                # 43
+
+# try the same with local
+# XXX tie-stdarray fails the tests involving local, so we use
+# different variable names to escape the 'tie'
+
+@bee = ( 'foo', 'bar', 'burbl', 'blah');
+{
+
+    local @bee = @bee;
+    t("@bee" eq "foo bar burbl blah");                         # 44
+    {
+       local (undef,@bee) = @bee;
+       t("@bee" eq "bar burbl blah");                          # 45
+       {
+           local @bee = ('XXX',@bee,'YYY');
+           t("@bee" eq "XXX bar burbl blah YYY");              # 46
+           {
+               local @bee = local(@bee) = qw(foo bar burbl blah);
+               t("@bee" eq "foo bar burbl blah");              # 47
+               {
+                   local (@bim) = local(@bee) = qw(foo bar);
+                   t("@bee" eq "foo bar");                     # 48
+                   t("@bim" eq "foo bar");                     # 49
+               }
+               t("@bee" eq "foo bar burbl blah");              # 50
+           }
+           t("@bee" eq "XXX bar burbl blah YYY");              # 51
+       }
+       t("@bee" eq "bar burbl blah");                          # 52
+    }
+    t("@bee" eq "foo bar burbl blah");                         # 53
+}
+
+# try the same with my
+{
+
+    my @bee = @bee;
+    t("@bee" eq "foo bar burbl blah");                         # 54
+    {
+       my (undef,@bee) = @bee;
+       t("@bee" eq "bar burbl blah");                          # 55
+       {
+           my @bee = ('XXX',@bee,'YYY');
+           t("@bee" eq "XXX bar burbl blah YYY");              # 56
+           {
+               my @bee = my @bee = qw(foo bar burbl blah);
+               t("@bee" eq "foo bar burbl blah");              # 57
+               {
+                   my (@bim) = my(@bee) = qw(foo bar);
+                   t("@bee" eq "foo bar");                     # 58
+                   t("@bim" eq "foo bar");                     # 59
+               }
+               t("@bee" eq "foo bar burbl blah");              # 60
+           }
+           t("@bee" eq "XXX bar burbl blah YYY");              # 61
+       }
+       t("@bee" eq "bar burbl blah");                          # 62
+    }
+    t("@bee" eq "foo bar burbl blah");                         # 63
+}
+
+# make sure reification behaves
+my $t = 63;
+sub reify { $_[1] = ++$t; print "@_\n"; }
+reify('ok');
+reify('ok');
+
+# qw() is no more a runtime split, it's compiletime.
+print "not " unless qw(foo bar snorfle)[2] eq 'snorfle';
+print "ok 66\n";
+
+@ary = (12,23,34,45,56);
+
+print "not " unless shift(@ary) == 12;
+print "ok 67\n";
+
+print "not " unless pop(@ary) == 56;
+print "ok 68\n";
+
+print "not " unless push(@ary,56) == 4;
+print "ok 69\n";
+
+print "not " unless unshift(@ary,12) == 5;
+print "ok 70\n";
+
+sub foo { "a" }
+@foo=(foo())[0,0];
+$foo[1] eq "a" or print "not ";
+print "ok 71\n";
+
+# $[ should have the same effect regardless of whether the aelem
+#    op is optimized to aelemfast.
+
+sub tary {
+  local $[ = 10;
+  my $five = 5;
+  print "not " unless $tary[5] == $tary[$five];
+  print "ok 72\n";
+}
+
+@tary = (0..50);
+tary();