Take a larger margin to prevent 'X' failures in smokes

[perl5.git] / t / op / universal.t

diff --git a/t/op/universal.t b/t/op/universal.t
index bde78fd..83f5a4f 100755 (executable)
--- a/t/op/universal.t
+++ b/t/op/universal.t
@@ -5,10 +5,11 @@
 
 BEGIN {
     chdir 't' if -d 't';
-    @INC = '../lib' if -d '../lib';
+    @INC = '../lib';
+    $| = 1;
 }
 
-print "1..72\n";
+print "1..101\n";
 
 $a = {};
 bless $a, "Bob";
@@ -23,21 +24,45 @@ package Female;
 
 package Alice;
 @ISA=qw(Bob Female);
-sub drink {}
+sub sing;
+sub drink { return "drinking " . $_[1]  }
 sub new { bless {} }
 
 $Alice::VERSION = 2.718;
 
+{
+    package Cedric;
+    our @ISA;
+    use base qw(Human);
+}
+
+{
+    package Programmer;
+    our $VERSION = 1.667;
+
+    sub write_perl { 1 }
+}
+
 package main;
 
-my $i = 2;
-sub test { print "not " unless shift; print "ok $i\n"; $i++; }
+{ my $i = 2;
+  sub test {
+      print "not " unless $_[0];
+      print "ok ", $i++;
+      print " # at ", (caller)[1], ", line ", (caller)[2] unless $_[0];
+      print "\n";
+  }
+}
 
 $a = new Alice;
 
 test $a->isa("Alice");
+test $a->isa("main::Alice");    # check that alternate class names work
+
+test(("main::Alice"->new)->isa("Alice"));
 
 test $a->isa("Bob");
+test $a->isa("main::Bob");
 
 test $a->isa("Female");
 
@@ -45,11 +70,37 @@ test $a->isa("Human");
 
 test ! $a->isa("Male");
 
-test $a->can("drink");
+test ! $a->isa('Programmer');
 
-test $a->can("eat");
+test $a->isa("HASH");
 
+test $a->can("eat");
 test ! $a->can("sleep");
+test my $ref = $a->can("drink");        # returns a coderef
+test $a->$ref("tea") eq "drinking tea"; # ... which works
+test $ref = $a->can("sing");
+eval { $a->$ref() };
+test $@;                                # ... but not if no actual subroutine
+
+test (!Cedric->isa('Programmer'));
+
+test (Cedric->isa('Human'));
+
+push(@Cedric::ISA,'Programmer');
+
+test (Cedric->isa('Programmer'));
+
+{
+    package Alice;
+    base::->import('Programmer');
+}
+
+test $a->isa('Programmer');
+test $a->isa("Female");
+
+@Cedric::ISA = qw(Bob);
+
+test (!Cedric->isa('Programmer'));
 
 my $b = 'abc';
 my @refs = qw(SCALAR SCALAR     LVALUE      GLOB ARRAY HASH CODE);
@@ -70,25 +121,35 @@ test ! $a->can("export_tags");     # a method in Exporter
 test (eval { $a->VERSION }) == 2.718;
 
 test ! (eval { $a->VERSION(2.719) }) &&
-         $@ =~ /^Alice version 2.719 required--this is only version 2.718 at /;
+         $@ =~ /^Alice version 2.719 \(v2\.719\.0\) required--this is only version 2.718 \(v2\.718\.0\) at /;
 
 test (eval { $a->VERSION(2.718) }) && ! $@;
 
 my $subs = join ' ', sort grep { defined &{"UNIVERSAL::$_"} } keys %UNIVERSAL::;
+## The test for import here is *not* because we want to ensure that UNIVERSAL
+## can always import; it is an historical accident that UNIVERSAL can import.
 if ('a' lt 'A') {
-    test $subs eq "can isa VERSION";
+    test $subs eq "can import isa VERSION";
 } else {
-    test $subs eq "VERSION can isa";
+    test $subs eq "VERSION can import isa";
 }
 
 test $a->isa("UNIVERSAL");
 
+test ! UNIVERSAL::isa([], "UNIVERSAL");
+
+test ! UNIVERSAL::can({}, "can");
+
+test UNIVERSAL::isa(Alice => "UNIVERSAL");
+
+test UNIVERSAL::can(Alice => "can") == \&UNIVERSAL::can;
+
 # now use UNIVERSAL.pm and see what changes
 eval "use UNIVERSAL";
 
 test $a->isa("UNIVERSAL");
 
-my $sub2 = join ' ', sort grep { defined &{"UNIVERSAL::$_"} } keys %UNIVERSAL::; 
+my $sub2 = join ' ', sort grep { defined &{"UNIVERSAL::$_"} } keys %UNIVERSAL::;
 # XXX import being here is really a bug
 if ('a' lt 'A') {
     test $sub2 eq "can import isa VERSION";
@@ -102,3 +163,41 @@ test $a->can("sleep");
 test ! UNIVERSAL::can($b, "can");
 
 test ! $a->can("export_tags"); # a method in Exporter
+
+test ! UNIVERSAL::isa("\xff\xff\xff\0", 'HASH');
+
+{
+    package Pickup;
+    use UNIVERSAL qw( isa can VERSION );
+
+    main::test isa "Pickup", UNIVERSAL;
+    main::test can( "Pickup", "can" ) == \&UNIVERSAL::can;
+    main::test VERSION "UNIVERSAL" ;
+}
+
+{
+    # test isa() and can() on magic variables
+    "Human" =~ /(.*)/;
+    test $1->isa("Human");
+    test $1->can("eat");
+    package HumanTie;
+    sub TIESCALAR { bless {} }
+    sub FETCH { "Human" }
+    tie my($x), "HumanTie";
+    ::test $x->isa("Human");
+    ::test $x->can("eat");
+}
+
+# bugid 3284
+# a second call to isa('UNIVERSAL') when @ISA is null failed due to caching
+
+@X::ISA=();
+my $x = {}; bless $x, 'X';
+test $x->isa('UNIVERSAL');
+test $x->isa('UNIVERSAL');
+
+
+# Check that the "historical accident" of UNIVERSAL having an import()
+# method doesn't effect anyone else.
+eval { Some::Package->import("bar") };
+test !$@;