X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Fop%2Funiversal.t;h=ebc22d1c088ed8128baf5fbbaffb8829032936ea;hb=3511154c18a0900e8873e8e72a4b74931525e718;hp=e6db8e691f2c5ca932dfaf10c1524e835d750e4c;hpb=22d4bb9ccb8701e68f9243547d7e3a3c55f70908;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/t/op/universal.t b/t/op/universal.t
index e6db8e6..ebc22d1 100755
--- a/t/op/universal.t
+++ b/t/op/universal.t
@@ -9,7 +9,7 @@ BEGIN {
     $| = 1;
 }
 
-print "1..80\n";
+print "1..101\n";
 
 $a = {};
 bless $a, "Bob";
@@ -24,7 +24,8 @@ package Female;
 
 package Alice;
 @ISA=qw(Bob Female);
-sub drink {}
+sub sing;
+sub drink { return "drinking " . $_[1]  }
 sub new { bless {} }
 
 $Alice::VERSION = 2.718;
@@ -44,14 +45,24 @@ $Alice::VERSION = 2.718;
 
 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");
 
@@ -61,11 +72,15 @@ test ! $a->isa("Male");
 
 test ! $a->isa('Programmer');
 
-test $a->can("drink");
+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'));
 
@@ -111,14 +126,24 @@ test ! (eval { $a->VERSION(2.719) }) &&
 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";
 
@@ -140,3 +165,39 @@ 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 $x->isa('UNIVERSAL');
+
+
+# Check that the "historical accident" of UNIVERSAL having an import()
+# method doesn't effect anyone else.
+eval { Some::Package->import("bar") };
+test !$@;