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

#!./perl

#
# test method calls and autoloading.
#

print "1..20\n";

@A::ISA = 'B';
@B::ISA = 'C';

sub C::d {"C::d"}
sub D::d {"D::d"}

my $cnt = 0;
sub test {
  print "# got `$_[0]', expected `$_[1]'\nnot " unless $_[0] eq $_[1]; 
  # print "not " unless shift eq shift;
  print "ok ", ++$cnt, "\n"
}

test( A->d, "C::d");		# Update hash table;

*B::d = \&D::d;			# Import now.
test (A->d, "D::d");		# Update hash table;

{
    local *B::d;
    eval 'sub B::d {"B::d1"}';	# Import now.
    test (A->d, "B::d1");	# Update hash table;
    undef &B::d;
    test ((eval { A->d }, ($@ =~ /Undefined subroutine/)), 1);
}

test (A->d, "D::d");		# Back to previous state

eval 'sub B::d {"B::d2"}';	# Import now.
test (A->d, "B::d2");		# Update hash table;

# What follows is hardly guarantied to work, since the names in scripts
# are already linked to "pruned" globs. Say, `undef &B::d' if it were
# after `delete $B::{d}; sub B::d {}' would reach an old subroutine.

undef &B::d;
delete $B::{d};
test (A->d, "C::d");		# Update hash table;

eval 'sub B::d {"B::d3"}';	# Import now.
test (A->d, "B::d3");		# Update hash table;

delete $B::{d};
*dummy::dummy = sub {};		# Mark as updated
test (A->d, "C::d");

eval 'sub B::d {"B::d4"}';	# Import now.
test (A->d, "B::d4");		# Update hash table;

delete $B::{d};			# Should work without any help too
test (A->d, "C::d");

*A::x = *A::d;			# See if cache incorrectly follows synonyms
A->d;
test (eval { A->x } || "nope", "nope");

eval <<'EOF';
sub C::e;
BEGIN { *B::e = \&C::e }	# Shouldn't prevent AUTOLOAD in original pkg
sub Y::f;
$counter = 0;

@X::ISA = 'Y';
@Y::ISA = 'B';

sub B::AUTOLOAD {
  my $c = ++$counter;
  my $method = $B::AUTOLOAD; 
  my $msg = "B: In $method, $c";
  eval "sub $method { \$msg }";
  goto &$method;
}
sub C::AUTOLOAD {
  my $c = ++$counter;
  my $method = $C::AUTOLOAD; 
  my $msg = "C: In $method, $c";
  eval "sub $method { \$msg }";
  goto &$method;
}
EOF

test(A->e(), "C: In C::e, 1");	# We get a correct autoload
test(A->e(), "C: In C::e, 1");	# Which sticks

test(A->ee(), "B: In A::ee, 2"); # We get a generic autoload, method in top
test(A->ee(), "B: In A::ee, 2"); # Which sticks

test(Y->f(), "B: In Y::f, 3");	# We vivify a correct method
test(Y->f(), "B: In Y::f, 3");	# Which sticks

# This test is not intended to be reasonable. It is here just to let you
# know that you broke some old construction. Feel free to rewrite the test
# if your patch breaks it.

*B::AUTOLOAD = sub {
  my $c = ++$counter;
  my $method = $AUTOLOAD; 
  *$AUTOLOAD = sub { "new B: In $method, $c" };
  goto &$AUTOLOAD;
};

test(A->eee(), "new B: In A::eee, 4");	# We get a correct $autoload
test(A->eee(), "new B: In A::eee, 4");	# Which sticks
Commit	Line	Data
92d69e20	1	#!./perl
	2
	3	#
	4	# test method calls and autoloading.
	5	#
	6
44a8e56a	7	print "1..20\n";
92d69e20	8
	9	@A::ISA = 'B';
	10	@B::ISA = 'C';
	11
	12	sub C::d {"C::d"}
	13	sub D::d {"D::d"}
	14
	15	my $cnt = 0;
	16	sub test {
	17	print "# got `$_[0]', expected `$_[1]'\nnot " unless $_[0] eq $_[1];
	18	# print "not " unless shift eq shift;
	19	print "ok ", ++$cnt, "\n"
	20	}
	21
	22	test( A->d, "C::d"); # Update hash table;
	23
	24	*B::d = \&D::d; # Import now.
	25	test (A->d, "D::d"); # Update hash table;
	26
44a8e56a	27	{
	28	local *B::d;
	29	eval 'sub B::d {"B::d1"}'; # Import now.
	30	test (A->d, "B::d1"); # Update hash table;
	31	undef &B::d;
	32	test ((eval { A->d }, ($@ =~ /Undefined subroutine/)), 1);
	33	}
92d69e20	34
44a8e56a	35	test (A->d, "D::d"); # Back to previous state
92d69e20	36
	37	eval 'sub B::d {"B::d2"}'; # Import now.
	38	test (A->d, "B::d2"); # Update hash table;
	39
	40	# What follows is hardly guarantied to work, since the names in scripts
	41	# are already linked to "pruned" globs. Say, `undef &B::d' if it were
	42	# after `delete $B::{d}; sub B::d {}' would reach an old subroutine.
	43
	44	undef &B::d;
	45	delete $B::{d};
	46	test (A->d, "C::d"); # Update hash table;
	47
	48	eval 'sub B::d {"B::d3"}'; # Import now.
	49	test (A->d, "B::d3"); # Update hash table;
	50
	51	delete $B::{d};
	52	*dummy::dummy = sub {}; # Mark as updated
	53	test (A->d, "C::d");
	54
	55	eval 'sub B::d {"B::d4"}'; # Import now.
	56	test (A->d, "B::d4"); # Update hash table;
	57
	58	delete $B::{d}; # Should work without any help too
	59	test (A->d, "C::d");
	60
44a8e56a	61	A::x = A::d; # See if cache incorrectly follows synonyms
	62	A->d;
	63	test (eval { A->x } \|\| "nope", "nope");
	64
92d69e20	65	eval <<'EOF';
92d69e20	66	sub C::e;
09280a33	67	BEGIN { *B::e = \&C::e } # Shouldn't prevent AUTOLOAD in original pkg
92d69e20	68	sub Y::f;
	69	$counter = 0;
	70
54310121	71	@X::ISA = 'Y';
dc848c6f	72	@Y::ISA = 'B';
92d69e20	73
	74	sub B::AUTOLOAD {
	75	my $c = ++$counter;
	76	my $method = $B::AUTOLOAD;
09280a33	77	my $msg = "B: In $method, $c";
	78	eval "sub $method { \$msg }";
	79	goto &$method;
92d69e20	80	}
	81	sub C::AUTOLOAD {
	82	my $c = ++$counter;
	83	my $method = $C::AUTOLOAD;
09280a33	84	my $msg = "C: In $method, $c";
	85	eval "sub $method { \$msg }";
	86	goto &$method;
92d69e20	87	}
	88	EOF
	89
	90	test(A->e(), "C: In C::e, 1"); # We get a correct autoload
	91	test(A->e(), "C: In C::e, 1"); # Which sticks
	92
	93	test(A->ee(), "B: In A::ee, 2"); # We get a generic autoload, method in top
	94	test(A->ee(), "B: In A::ee, 2"); # Which sticks
	95
	96	test(Y->f(), "B: In Y::f, 3"); # We vivify a correct method
	97	test(Y->f(), "B: In Y::f, 3"); # Which sticks
	98
	99	# This test is not intended to be reasonable. It is here just to let you
	100	# know that you broke some old construction. Feel free to rewrite the test
	101	# if your patch breaks it.
	102
	103	*B::AUTOLOAD = sub {
	104	my $c = ++$counter;
44a8e56a	105	my $method = $AUTOLOAD;
	106	*$AUTOLOAD = sub { "new B: In $method, $c" };
	107	goto &$AUTOLOAD;
92d69e20	108	};
	109
	110	test(A->eee(), "new B: In A::eee, 4"); # We get a correct $autoload
	111	test(A->eee(), "new B: In A::eee, 4"); # Which sticks