[perl5.git] / lib / DB.t

#!./perl

BEGIN {
	chdir 't' if -d 't';
	@INC = '../lib';
}

use Test::More tests => 106;

# must happen at compile time for DB:: package variable localizations to work
BEGIN {
	use_ok( 'DB' );
}

# test DB::sub()
{
	my $callflag = 0;
	local $DB::sub = sub {
		$callflag += shift || 1;
		my @vals = (1, 4, 9);
		return @vals;
	};
	my $ret = DB::sub;
	is( $ret, 3, 'DB::sub() should handle scalar context' );
	is( $callflag, 1, '... should call $DB::sub contents' );
	$ret = join(' ', DB::sub(2));
	is( $ret, '1 4 9', '... should handle scalar context' );
	is( $callflag, 3, '... should pass along arguments to the sub' );
	ok( defined($DB::ret),'$DB::ret should be defined after successful return');
	DB::sub;
	ok( !defined($DB::ret), '... should respect void context' );
	$DB::sub = '::DESTROY';
	ok( !defined($DB::ret), '... should return undef for DESTROY()' );
}

# test DB::DB()
{ 
	ok( ! defined DB::DB(), 
		'DB::DB() should return undef if $DB::ready is false');
	is( DB::catch(), 1, 'DB::catch() should work' );
	is( DB->skippkg('foo'), 1, 'DB->skippkg() should push args' );

	# change packages to mess with caller()
	package foo;
	::ok( ! defined DB::DB(), 'DB::DB() should skip skippable packages' );

	package main;
	is( $DB::filename, $0, '... should set $DB::filename' );
	is( $DB::lineno, __LINE__ - 4, '... should set $DB::lineno' );

	DB::DB();
	# stops at line 94
}

# test DB::save()
{
	# assigning a number to $! seems to produce an error message, when read
	local ($@, $,, $/, $\, $^W, $!) = (1 .. 5);
	DB::save();
	is( "$@$!$,$/$\$^W", "1\n0", 'DB::save() should reset punctuation vars' );
}

# test DB::catch()
{
	local $DB::signal;
	DB::catch();
	ok( $DB::signal, 'DB::catch() should set $DB::signal' );
	# add clients and test to see if they are awakened
}

# test DB::_clientname()
is( DB::_clientname('foo=A(1)'), 'foo','DB::_clientname should return refname');
is( DB::_clientname('bar'), '','DB::_clientname should not return non refname');

# test DB::next() and DB::step()
{
	local $DB::single;
	DB->next();
	is( $DB::single, 2, 'DB->next() should set $DB::single to 2' );
	DB->step();
	is( $DB::single, 1, 'DB->step() should set $DB::single to 1' );
}

# test DB::cont()
{
	# cannot test @stack

	local $DB::single = 1;
	my $fdb = FakeDB->new();
	DB::cont($fdb, 2);
	is( $fdb->{tbreak}, 2, 'DB::cont() should set tbreak in object' );
	is( $DB::single, 0, '... should set $DB::single to 0' );
}

# test DB::ret()
{
	# cannot test @stack

	local $DB::single = 1;
	DB::ret();
	is( $DB::single, 0, 'DB::ret() should set $DB::single to 0' );
}

# test DB::backtrace()
{
	local (@DB::args, $DB::signal);

	my $line = __LINE__ + 1;
	my @ret = eval { DB->backtrace() };
	like( $ret[0], qr/file.+$0/, 'DB::backtrace() should report current file');
	like( $ret[0], qr/line $line/, '... should report calling line number' );
	like( $ret[0], qr/eval {...}/, '... should catch eval BLOCK' );

	@ret = eval "one(2)";
	is( scalar @ret, 1, '... should report from provided stack frame number' );
	like( $ret[0], qr/\@ = &eval \'one.+?2\)\'/, #'
		'... should find eval STRING construct');
	$ret[0] = check_context(1);
	like( $ret[0], qr/\$ = &main::check_context/, 
		'... should respect context of calling construct');
	
	$DB::signal = 1;
	@DB::args = (1, 7);
	@ret = three(1);
	is( scalar @ret, 1, '... should end loop if $DB::signal is true' );

	# does not check 'require' or @DB::args mangling
}

sub check_context {
	return (eval "one($_[0])")[-1];
}
sub one { DB->backtrace(@_) }
sub two { one(@_) }
sub three { two(@_) }

# test DB::trace_toggle
{
	local $DB::trace = 0;
	DB->trace_toggle;
	ok( $DB::trace, 'DB::trace_toggle() should toggle $DB::trace' );
	DB->trace_toggle;
	ok( !$DB::trace, '... should toggle $DB::trace (back)' );
}

# test DB::subs()
{
	local %DB::sub;
	my $subs = DB->subs;
	is( $subs, 0, 'DB::subs() should return keys of %DB::subs' );
	%DB::sub = ( foo => 'foo:23-45' , bar => 'ba:r:7-890' );
	$subs = DB->subs;
	is( $subs, 2, '... same song, different key' );
	my @subs = DB->subs( 'foo', 'boo', 'bar' );
	is( scalar @subs, 2, '... should report only for requested subs' );
	my @expected = ( [ 'foo', 23, 45 ], [ 'ba:r', 7, 890 ] );
	ok( eq_array( \@subs, \@expected ), '... find file, start, end for subs' );
}

# test DB::filesubs()
{
	local ($DB::filename, %DB::sub);
	$DB::filename = 'baz';
	%DB::sub = map { $_ => $_ } qw( bazbar bazboo boobar booboo boobaz );
	my @ret = DB->filesubs();
	is( scalar @ret, 2, 'DB::filesubs() should use $DB::filename with no args');
	@ret = grep { /^baz/ } @ret;	
	is( scalar @ret, 2, '... should pick up subs in proper file' );
	@ret = DB->filesubs('boo');
	is( scalar @ret, 3, '... should use argument to find subs' );
	@ret = grep { /^boo/ } @ret;	
	is( scalar @ret, 3, '... should pick up subs in proper file with argument');
}

# test DB::files()
{
	my $dbf = () = DB::files();
	my $main = () = grep ( m!^_<!, keys %main:: );
	is( $dbf, $main, 'DB::files() should pick up filenames from %main::' );
}

# test DB::lines()
{
	local @DB::dbline = ( 'foo' );
	is( DB->lines->[0], 'foo', 'DB::lines() should return ref to @DB::dbline' );
}

# test DB::loadfile()
SKIP: {
	local (*DB::dbline, $DB::filename);
	ok( ! defined DB->loadfile('notafile'),
		'DB::loadfile() should not find unloaded file' );
	my $file = (grep { m|^_<.+\.pm| } keys %main:: )[0];
	skip('cannot find loaded file', 3) unless $file;
	$file =~ s/^_<..//;

	my $db = DB->loadfile($file);
	like( $db, qr!$file\z!, '... should find loaded file from partial name');
	is( *DB::dbline, *{ "_<$db" } , 
		'... should set *DB::dbline to associated glob');
	is( $DB::filename, $db, '... should set $DB::filename to file name' );

	# test clients
}

# test DB::lineevents()
{
	local $DB::filename = 'baz';
	local *baz = *{ "main::_<baz" };
	@baz = ( 1 .. 5 );
	%baz = (
		1 => "foo\0bar",
		3 => "boo\0far",
		4 => "fazbaz",
	);
	my %ret = DB->lineevents();
	is( scalar keys %ret, 3, 'DB::lineevents() should pick up defined lines' );

	# array access in DB::lineevents() starts at element 1, not 0
	is( join(' ', @{ $ret{1} }), '2 foo bar', '... should stash data in hash');
}

# test DB::set_break()
{
	local ($DB::lineno, *DB::dbline, $DB::package);

	%DB::dbline = (
		1 => "\0",
		2 => undef,
		3 => "123\0\0\0abc",
		4 => "\0abc",
	);

	*DB::dbline = [ 0, 1, 0, 0, 1 ];

	local %DB::sub = (
		'main::foo'	=> 'foo:1-4',
	);
	 
	DB->set_break(1, 'foo');
	is( $DB::dbline{1}, "foo\0", 'DB::set_break() should set break condition' );

	$DB::lineno = 1;
	DB->set_break(undef, 'bar');
	is( $DB::dbline{1}, "bar\0", 
		'... should use $DB::lineno without specified line' );

	DB->set_break(4);
	is( $DB::dbline{4}, "1\0abc", '... should use default condition if needed');

	local %DB::sub = (
		'main::foo'	=> 'foo:1-4',
	);
	DB->set_break('foo', 'baz');
	is( $DB::dbline{4}, "baz\0abc", 
		'... should use _find_subline() to resolve subname' );

	my $db = FakeDB->new();
	DB::set_break($db, 2);
	like( $db->{output}, qr/2 not break/, '... should respect @DB::dbline' );

	DB::set_break($db, 'nonfoo');
	like( $db->{output}, qr/not found/, '... should warn on unfound sub' );
}

# test DB::set_tbreak()
{
	local ($DB::lineno, *DB::dbline, $DB::package);
	*DB::dbline = [ 0, 1, 0, 0, 1 ];

	DB->set_tbreak(1);
	is( $DB::dbline{1}, ';9', 'DB::set_tbreak() should set tbreak condition' );

	local %DB::sub = (
		'main::foo'	=> 'foo:1-4',
	);
	DB->set_tbreak('foo', 'baz');
	is( $DB::dbline{4}, ';9', 
		'... should use _find_subline() to resolve subname' );

	my $db = FakeDB->new();
	DB::set_tbreak($db, 2);
	like( $db->{output}, qr/2 not break/, '... should respect @DB::dbline' );

	DB::set_break($db, 'nonfoo');
	like( $db->{output}, qr/not found/, '... should warn on unfound sub' );
}

# test DB::_find_subline()
{
	my @foo;
	local *{ "::_<foo" } = \@foo;

	local $DB::package;
	local %DB::sub = (
		'TEST::foo'	=> 'foo:10-15',
		'main::foo'	=> 'foo:11-12',
		'bar::bar'	=> 'foo:10-16',
	);

	$foo[11] = 1;

	is( DB::_find_subline('TEST::foo'), 11, 
		'DB::_find_subline() should find fully qualified sub' );
	is( DB::_find_subline("TEST'foo"), 11, '... should handle old package sep');
	is( DB::_find_subline('foo'), 11, 
		'... should resolve unqualified package name to main::' );

	$DB::package = 'bar';
	is( DB::_find_subline('bar'), 11, 
		'... should resolve unqualified name with $DB::package, if defined' );
	
	$foo[11] = 0;

	is( DB::_find_subline('TEST::foo'), 15, 
		'... should increment past lines with no events' );
		
	ok( ! defined DB::_find_subline('sirnotappearinginthisfilm'),
		'... should not find nonexistant sub' );
}

# test DB::clr_breaks()
{
	local *DB::dbline;
	my %lines = (
		1 => "\0",
		2 => undef,
		3 => "123\0\0\0abc",
		4 => "\0\0\0abc",
	);

	%DB::dbline = %lines;
	DB->clr_breaks(1 .. 4);
	is( scalar keys %DB::dbline, 3, 'DB::clr_breaks() should clear breaks' );
	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
	is( $DB::dbline{3}, "\0\0\0abc", '... should remove break, leaving action');
	is( $DB::dbline{4}, "\0\0\0abc", '... should not remove set actions' );

	local *{ "::_<foo" } = [ 0, 0, 0, 1 ];

	local $DB::package;
	local %DB::sub = (
		'main::foo'	=> 'foo:1-3',
	);

	%DB::dbline = %lines;
	DB->clr_breaks('foo');

	is( $DB::dbline{3}, "\0\0\0abc", 
		'... should find lines via _find_subline()' );
	
	my $db = FakeDB->new();
	DB::clr_breaks($db, 'abadsubname');
	is( $db->{output}, "Subroutine not found.\n", 
		'... should output warning if sub cannot be found');

	@DB::dbline = (1 .. 4);
	%DB::dbline = (%lines, 5 => "\0" );

	DB::clr_breaks();

	is( scalar keys %DB::dbline, 4, 
		'Relying on @DB::dbline in DB::clr_breaks() should clear breaks' );
	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
	is( $DB::dbline{3}, "\0\0\0abc", '... should remove break, leaving action');
	is( $DB::dbline{4}, "\0\0\0abc", '... should not remove set actions' );
	ok( exists($DB::dbline{5}), 
		'... should only go to last index of @DB::dbline' );
}

# test DB::set_action()
{
	local *DB::dbline;

	%DB::dbline = (
		2 => "\0abc",
	);

	*DB::dbline = [ 0, 0, 1, 1 ];

	DB->set_action(2, 'def');
	is( $DB::dbline{2}, "\0def", 
		'DB::set_action() should replace existing action' );
	DB->set_action(3, '');
	is( $DB::dbline{3}, "\0", '... should set new action' );

	my $db = FakeDB->new();
	DB::set_action($db, 'abadsubname');
	is( $db->{output}, "Subroutine not found.\n", 
		'... should output warning if sub cannot be found');

	DB::set_action($db, 1);
	like( $db->{output}, qr/1 not action/, 
		'... should warn if line cannot be actionivated' );
}

# test DB::clr_actions()
{
	local *DB::dbline;
	my %lines = (
		1 => "\0",
		2 => undef,
		3 => "123\0abc",
		4 => "abc\0",
	);

	%DB::dbline = %lines;
	*DB::dbline = [ 1, 1, 1, 1 ];

	DB->clr_actions(1 .. 4);

	is( scalar keys %DB::dbline, 2, 'DB::clr_actions() should clear actions' );
	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
	is( $DB::dbline{3}, "123", '... should remove action, leaving break');
	is( $DB::dbline{4}, "abc\0", '... should not remove set breaks' );

	local *{ "::_<foo" } = [ 0, 0, 0, 1 ];

	local $DB::package;
	local %DB::sub = (
		'main::foo'	=> 'foo:1-3',
	);

	%DB::dbline = %lines;
	DB->clr_actions('foo');

	is( $DB::dbline{3}, "123", '... should find lines via _find_subline()' );
	
	my $db = FakeDB->new();
	DB::clr_actions($db, 'abadsubname');
	is( $db->{output}, "Subroutine not found.\n", 
		'... should output warning if sub cannot be found');

	@DB::dbline = (1 .. 4);
	%DB::dbline = (%lines, 5 => "\0" );

	DB::clr_actions();

	is( scalar keys %DB::dbline, 4, 
		'Relying on @DB::dbline in DB::clr_actions() should clear actions' );
	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
	is( $DB::dbline{3}, "123", '... should remove action, leaving break');
	is( $DB::dbline{4}, "abc\0", '... should not remove set breaks' );
	ok( exists($DB::dbline{5}), 
		'... should only go to last index of @DB::dbline' );
}

# test DB::prestop()
ok( ! defined DB::prestop('test'),
	'DB::prestop() should return undef for undef value' );
DB::prestop('test', 897);
is( DB::prestop('test'), 897, '... should return value when set' );

# test DB::poststop(), not exactly parallel
ok( ! defined DB::poststop('tset'), 
	'DB::prestop() should return undef for undef value' );
DB::poststop('tset', 987);
is( DB::poststop('tset'), 987, '... should return value when set' );

# test DB::evalcode()
ok( ! defined DB::evalcode('foo'),
	'DB::evalcode() should return undef for undef value' );

DB::evalcode('foo', 'bar');
is( DB::evalcode('foo'), 'bar', '... should return value when set' );

# test DB::_outputall(), must create fake clients first
ok( DB::register( FakeDB->new() ), 'DB::register() should work' );
DB::register( FakeDB->new() ) for ( 1 .. 2);

DB::_outputall(1, 2, 3);
is( $FakeDB::output, '123123123', 
	'DB::_outputall() should call output(@_) on all clients' );

# test virtual methods
for my $method (qw( cprestop cpoststop awaken init stop idle cleanup output )) {
	ok( defined &{ "DB::$method" }, "DB::$method() should be defined" );
}

# DB::skippkg() uses lexical
# DB::ready() uses lexical

package FakeDB;

use vars qw( $output );

sub new {
	bless({}, $_[0]);
}

sub set_tbreak {
	my ($self, $val) = @_;
	$self->{tbreak} = $val;
}

sub output {
	my $self = shift;
	if (ref $self) {
		$self->{output} = join('', @_);
	} else {
		$output .= join('', @_);
	}
}
Commit	Line	Data
c95f170b	1	#!./perl
	2
	3	BEGIN {
	4	chdir 't' if -d 't';
	5	@INC = '../lib';
	6	}
	7
	8	use Test::More tests => 106;
	9
	10	# must happen at compile time for DB:: package variable localizations to work
	11	BEGIN {
	12	use_ok( 'DB' );
	13	}
	14
	15	# test DB::sub()
	16	{
	17	my $callflag = 0;
	18	local $DB::sub = sub {
	19	$callflag += shift \|\| 1;
	20	my @vals = (1, 4, 9);
	21	return @vals;
	22	};
	23	my $ret = DB::sub;
	24	is( $ret, 3, 'DB::sub() should handle scalar context' );
	25	is( $callflag, 1, '... should call $DB::sub contents' );
	26	$ret = join(' ', DB::sub(2));
	27	is( $ret, '1 4 9', '... should handle scalar context' );
	28	is( $callflag, 3, '... should pass along arguments to the sub' );
	29	ok( defined($DB::ret),'$DB::ret should be defined after successful return');
	30	DB::sub;
	31	ok( !defined($DB::ret), '... should respect void context' );
	32	$DB::sub = '::DESTROY';
	33	ok( !defined($DB::ret), '... should return undef for DESTROY()' );
	34	}
	35
	36	# test DB::DB()
	37	{
	38	ok( ! defined DB::DB(),
	39	'DB::DB() should return undef if $DB::ready is false');
	40	is( DB::catch(), 1, 'DB::catch() should work' );
	41	is( DB->skippkg('foo'), 1, 'DB->skippkg() should push args' );
	42
	43	# change packages to mess with caller()
	44	package foo;
	45	::ok( ! defined DB::DB(), 'DB::DB() should skip skippable packages' );
	46
	47	package main;
	48	is( $DB::filename, $0, '... should set $DB::filename' );
	49	is( $DB::lineno, __LINE__ - 4, '... should set $DB::lineno' );
	50
	51	DB::DB();
	52	# stops at line 94
	53	}
	54
	55	# test DB::save()
	56	{
	57	# assigning a number to $! seems to produce an error message, when read
	58	local ($@, $,, $/, $\, $^W, $!) = (1 .. 5);
	59	DB::save();
	60	is( "$@$!$,$/$\$^W", "1\n0", 'DB::save() should reset punctuation vars' );
	61	}
	62
	63	# test DB::catch()
	64	{
65	local $DB::signal;
66	DB::catch();
67	ok( $DB::signal, 'DB::catch() should set $DB::signal' );
68	# add clients and test to see if they are awakened
69	}
70
71	# test DB::_clientname()
72	is( DB::_clientname('foo=A(1)'), 'foo','DB::_clientname should return refname');
73	is( DB::_clientname('bar'), '','DB::_clientname should not return non refname');
74
75	# test DB::next() and DB::step()
76	{
77	local $DB::single;
78	DB->next();
79	is( $DB::single, 2, 'DB->next() should set $DB::single to 2' );
80	DB->step();
81	is( $DB::single, 1, 'DB->step() should set $DB::single to 1' );
82	}
83
84	# test DB::cont()
85	{
86	# cannot test @stack
87
88	local $DB::single = 1;
89	my $fdb = FakeDB->new();
90	DB::cont($fdb, 2);
91	is( $fdb->{tbreak}, 2, 'DB::cont() should set tbreak in object' );
92	is( $DB::single, 0, '... should set $DB::single to 0' );
93	}
94
95	# test DB::ret()
96	{
97	# cannot test @stack
98
99	local $DB::single = 1;
100	DB::ret();
101	is( $DB::single, 0, 'DB::ret() should set $DB::single to 0' );
102	}
103
104	# test DB::backtrace()
105	{
106	local (@DB::args, $DB::signal);
107
108	my $line = __LINE__ + 1;
109	my @ret = eval { DB->backtrace() };
110	like( $ret[0], qr/file.+$0/, 'DB::backtrace() should report current file');
111	like( $ret[0], qr/line $line/, '... should report calling line number' );
112	like( $ret[0], qr/eval {...}/, '... should catch eval BLOCK' );
113
114	@ret = eval "one(2)";
115	is( scalar @ret, 1, '... should report from provided stack frame number' );
116	like( $ret[0], qr/\@ = &eval \'one.+?2\)\'/, #'
117	'... should find eval STRING construct');
118	$ret[0] = check_context(1);
119	like( $ret[0], qr/\$ = &main::check_context/,
120	'... should respect context of calling construct');
121
122	$DB::signal = 1;
123	@DB::args = (1, 7);
124	@ret = three(1);
125	is( scalar @ret, 1, '... should end loop if $DB::signal is true' );
126
127	# does not check 'require' or @DB::args mangling
128	}
129
130	sub check_context {
131	return (eval "one($_[0])")[-1];
132	}
133	sub one { DB->backtrace(@_) }
134	sub two { one(@_) }
135	sub three { two(@_) }
136
137	# test DB::trace_toggle
138	{
139	local $DB::trace = 0;
140	DB->trace_toggle;
141	ok( $DB::trace, 'DB::trace_toggle() should toggle $DB::trace' );
142	DB->trace_toggle;
143	ok( !$DB::trace, '... should toggle $DB::trace (back)' );
144	}
145
146	# test DB::subs()
147	{
148	local %DB::sub;
149	my $subs = DB->subs;
150	is( $subs, 0, 'DB::subs() should return keys of %DB::subs' );
151	%DB::sub = ( foo => 'foo:23-45' , bar => 'ba:r:7-890' );
152	$subs = DB->subs;
153	is( $subs, 2, '... same song, different key' );
154	my @subs = DB->subs( 'foo', 'boo', 'bar' );
155	is( scalar @subs, 2, '... should report only for requested subs' );
156	my @expected = ( [ 'foo', 23, 45 ], [ 'ba:r', 7, 890 ] );
157	ok( eq_array( \@subs, \@expected ), '... find file, start, end for subs' );
158	}
159
160	# test DB::filesubs()
161	{
162	local ($DB::filename, %DB::sub);
163	$DB::filename = 'baz';
164	%DB::sub = map { $_ => $_ } qw( bazbar bazboo boobar booboo boobaz );
165	my @ret = DB->filesubs();
166	is( scalar @ret, 2, 'DB::filesubs() should use $DB::filename with no args');
167	@ret = grep { /^baz/ } @ret;
168	is( scalar @ret, 2, '... should pick up subs in proper file' );
169	@ret = DB->filesubs('boo');
170	is( scalar @ret, 3, '... should use argument to find subs' );
171	@ret = grep { /^boo/ } @ret;
172	is( scalar @ret, 3, '... should pick up subs in proper file with argument');
173	}
174
175	# test DB::files()
176	{
177	my $dbf = () = DB::files();
178	my $main = () = grep ( m!^_<!, keys %main:: );
179	is( $dbf, $main, 'DB::files() should pick up filenames from %main::' );
180	}
181
182	# test DB::lines()
183	{
184	local @DB::dbline = ( 'foo' );
185	is( DB->lines->[0], 'foo', 'DB::lines() should return ref to @DB::dbline' );
186	}
187
188	# test DB::loadfile()
189	SKIP: {
190	local (*DB::dbline, $DB::filename);
191	ok( ! defined DB->loadfile('notafile'),
192	'DB::loadfile() should not find unloaded file' );
193	my $file = (grep { m\|^_<.+\.pm\| } keys %main:: )[0];
194	skip('cannot find loaded file', 3) unless $file;
195	$file =~ s/^_<..//;
196
197	my $db = DB->loadfile($file);
198	like( $db, qr!$file\z!, '... should find loaded file from partial name');
199	is( DB::dbline, { "_<$db" } ,
200	'... should set *DB::dbline to associated glob');
201	is( $DB::filename, $db, '... should set $DB::filename to file name' );
202
203	# test clients
204	}
205
206	# test DB::lineevents()
207	{
208	local $DB::filename = 'baz';
209	local baz = { "main::_<baz" };
210	@baz = ( 1 .. 5 );
211	%baz = (
212	1 => "foo\0bar",
213	3 => "boo\0far",
214	4 => "fazbaz",
215	);
216	my %ret = DB->lineevents();
217	is( scalar keys %ret, 3, 'DB::lineevents() should pick up defined lines' );
218
219	# array access in DB::lineevents() starts at element 1, not 0
220	is( join(' ', @{ $ret{1} }), '2 foo bar', '... should stash data in hash');
221	}
222
223	# test DB::set_break()
224	{
225	local ($DB::lineno, *DB::dbline, $DB::package);
226
227	%DB::dbline = (
228	1 => "\0",
229	2 => undef,
230	3 => "123\0\0\0abc",
231	4 => "\0abc",
232	);
233
234	*DB::dbline = [ 0, 1, 0, 0, 1 ];
235
236	local %DB::sub = (
237	'main::foo' => 'foo:1-4',
238	);
239
240	DB->set_break(1, 'foo');
241	is( $DB::dbline{1}, "foo\0", 'DB::set_break() should set break condition' );
242
243	$DB::lineno = 1;
244	DB->set_break(undef, 'bar');
245	is( $DB::dbline{1}, "bar\0",
246	'... should use $DB::lineno without specified line' );
247
248	DB->set_break(4);
249	is( $DB::dbline{4}, "1\0abc", '... should use default condition if needed');
250
251	local %DB::sub = (
252	'main::foo' => 'foo:1-4',
253	);
254	DB->set_break('foo', 'baz');
255	is( $DB::dbline{4}, "baz\0abc",
256	'... should use _find_subline() to resolve subname' );
257
258	my $db = FakeDB->new();
259	DB::set_break($db, 2);
260	like( $db->{output}, qr/2 not break/, '... should respect @DB::dbline' );
261
262	DB::set_break($db, 'nonfoo');
263	like( $db->{output}, qr/not found/, '... should warn on unfound sub' );
264	}
265
266	# test DB::set_tbreak()
267	{
268	local ($DB::lineno, *DB::dbline, $DB::package);
269	*DB::dbline = [ 0, 1, 0, 0, 1 ];
270
271	DB->set_tbreak(1);
272	is( $DB::dbline{1}, ';9', 'DB::set_tbreak() should set tbreak condition' );
273
274	local %DB::sub = (
275	'main::foo' => 'foo:1-4',
276	);
277	DB->set_tbreak('foo', 'baz');
278	is( $DB::dbline{4}, ';9',
279	'... should use _find_subline() to resolve subname' );
280
281	my $db = FakeDB->new();
282	DB::set_tbreak($db, 2);
283	like( $db->{output}, qr/2 not break/, '... should respect @DB::dbline' );
284
285	DB::set_break($db, 'nonfoo');
286	like( $db->{output}, qr/not found/, '... should warn on unfound sub' );
287	}
288
289	# test DB::_find_subline()
290	{
291	my @foo;
292	local *{ "::_<foo" } = \@foo;
293
294	local $DB::package;
295	local %DB::sub = (
296	'TEST::foo' => 'foo:10-15',
297	'main::foo' => 'foo:11-12',
298	'bar::bar' => 'foo:10-16',
299	);
300
301	$foo[11] = 1;
302
303	is( DB::_find_subline('TEST::foo'), 11,
304	'DB::_find_subline() should find fully qualified sub' );
305	is( DB::_find_subline("TEST'foo"), 11, '... should handle old package sep');
306	is( DB::_find_subline('foo'), 11,
307	'... should resolve unqualified package name to main::' );
308
309	$DB::package = 'bar';
310	is( DB::_find_subline('bar'), 11,
311	'... should resolve unqualified name with $DB::package, if defined' );
312
313	$foo[11] = 0;
314
315	is( DB::_find_subline('TEST::foo'), 15,
316	'... should increment past lines with no events' );
317
318	ok( ! defined DB::_find_subline('sirnotappearinginthisfilm'),
319	'... should not find nonexistant sub' );
320	}
321
322	# test DB::clr_breaks()
323	{
324	local *DB::dbline;
325	my %lines = (
326	1 => "\0",
327	2 => undef,
328	3 => "123\0\0\0abc",
329	4 => "\0\0\0abc",
330	);
331
332	%DB::dbline = %lines;
333	DB->clr_breaks(1 .. 4);
334	is( scalar keys %DB::dbline, 3, 'DB::clr_breaks() should clear breaks' );
335	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
336	is( $DB::dbline{3}, "\0\0\0abc", '... should remove break, leaving action');
337	is( $DB::dbline{4}, "\0\0\0abc", '... should not remove set actions' );
338
339	local *{ "::_<foo" } = [ 0, 0, 0, 1 ];
340
341	local $DB::package;
342	local %DB::sub = (
343	'main::foo' => 'foo:1-3',
344	);
345
346	%DB::dbline = %lines;
347	DB->clr_breaks('foo');
348
349	is( $DB::dbline{3}, "\0\0\0abc",
350	'... should find lines via _find_subline()' );
351
352	my $db = FakeDB->new();
353	DB::clr_breaks($db, 'abadsubname');
354	is( $db->{output}, "Subroutine not found.\n",
355	'... should output warning if sub cannot be found');
356
357	@DB::dbline = (1 .. 4);
358	%DB::dbline = (%lines, 5 => "\0" );
359
360	DB::clr_breaks();
361
362	is( scalar keys %DB::dbline, 4,
363	'Relying on @DB::dbline in DB::clr_breaks() should clear breaks' );
364	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
365	is( $DB::dbline{3}, "\0\0\0abc", '... should remove break, leaving action');
366	is( $DB::dbline{4}, "\0\0\0abc", '... should not remove set actions' );
367	ok( exists($DB::dbline{5}),
368	'... should only go to last index of @DB::dbline' );
369	}
370
371	# test DB::set_action()
372	{
373	local *DB::dbline;
374
375	%DB::dbline = (
376	2 => "\0abc",
377	);
378
379	*DB::dbline = [ 0, 0, 1, 1 ];
380
381	DB->set_action(2, 'def');
382	is( $DB::dbline{2}, "\0def",
383	'DB::set_action() should replace existing action' );
384	DB->set_action(3, '');
385	is( $DB::dbline{3}, "\0", '... should set new action' );
386
387	my $db = FakeDB->new();
388	DB::set_action($db, 'abadsubname');
389	is( $db->{output}, "Subroutine not found.\n",
390	'... should output warning if sub cannot be found');
391
392	DB::set_action($db, 1);
393	like( $db->{output}, qr/1 not action/,
394	'... should warn if line cannot be actionivated' );
395	}
396
397	# test DB::clr_actions()
398	{
399	local *DB::dbline;
400	my %lines = (
401	1 => "\0",
402	2 => undef,
403	3 => "123\0abc",
404	4 => "abc\0",
405	);
406
407	%DB::dbline = %lines;
408	*DB::dbline = [ 1, 1, 1, 1 ];
409
410	DB->clr_actions(1 .. 4);
411
412	is( scalar keys %DB::dbline, 2, 'DB::clr_actions() should clear actions' );
413	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
414	is( $DB::dbline{3}, "123", '... should remove action, leaving break');
415	is( $DB::dbline{4}, "abc\0", '... should not remove set breaks' );
416
417	local *{ "::_<foo" } = [ 0, 0, 0, 1 ];
418
419	local $DB::package;
420	local %DB::sub = (
421	'main::foo' => 'foo:1-3',
422	);
423
424	%DB::dbline = %lines;
425	DB->clr_actions('foo');
426
427	is( $DB::dbline{3}, "123", '... should find lines via _find_subline()' );
428
429	my $db = FakeDB->new();
430	DB::clr_actions($db, 'abadsubname');
431	is( $db->{output}, "Subroutine not found.\n",
432	'... should output warning if sub cannot be found');
433
434	@DB::dbline = (1 .. 4);
435	%DB::dbline = (%lines, 5 => "\0" );
436
437	DB::clr_actions();
438
439	is( scalar keys %DB::dbline, 4,
440	'Relying on @DB::dbline in DB::clr_actions() should clear actions' );
441	ok( ! exists($DB::dbline{1}), '... should delete empty actions' );
442	is( $DB::dbline{3}, "123", '... should remove action, leaving break');
443	is( $DB::dbline{4}, "abc\0", '... should not remove set breaks' );
444	ok( exists($DB::dbline{5}),
445	'... should only go to last index of @DB::dbline' );
446	}
447
448	# test DB::prestop()
449	ok( ! defined DB::prestop('test'),
450	'DB::prestop() should return undef for undef value' );
451	DB::prestop('test', 897);
452	is( DB::prestop('test'), 897, '... should return value when set' );
453
454	# test DB::poststop(), not exactly parallel
455	ok( ! defined DB::poststop('tset'),
456	'DB::prestop() should return undef for undef value' );
457	DB::poststop('tset', 987);
458	is( DB::poststop('tset'), 987, '... should return value when set' );
459
460	# test DB::evalcode()
461	ok( ! defined DB::evalcode('foo'),
462	'DB::evalcode() should return undef for undef value' );
463
464	DB::evalcode('foo', 'bar');
465	is( DB::evalcode('foo'), 'bar', '... should return value when set' );
466
467	# test DB::_outputall(), must create fake clients first
468	ok( DB::register( FakeDB->new() ), 'DB::register() should work' );
469	DB::register( FakeDB->new() ) for ( 1 .. 2);
470
471	DB::_outputall(1, 2, 3);
472	is( $FakeDB::output, '123123123',
473	'DB::_outputall() should call output(@_) on all clients' );
474
475	# test virtual methods
476	for my $method (qw( cprestop cpoststop awaken init stop idle cleanup output )) {
477	ok( defined &{ "DB::$method" }, "DB::$method() should be defined" );
478	}
479
480	# DB::skippkg() uses lexical
481	# DB::ready() uses lexical
482
483	package FakeDB;
484
485	use vars qw( $output );
486
487	sub new {
488	bless({}, $_[0]);
489	}
490
491	sub set_tbreak {
492	my ($self, $val) = @_;
493	$self->{tbreak} = $val;
494	}
495
496	sub output {
497	my $self = shift;
498	if (ref $self) {
499	$self->{output} = join('', @_);
500	} else {
501	$output .= join('', @_);
502	}
503	}