Add Tests for sigtrap.pm

Message-Id: <20011007005801.98381.qmail@onion.perl.org>

p4raw-id: //depot/perl@12347

1 files changed, 104 insertions, 0 deletions

diff --git a/lib/sigtrap.t b/lib/sigtrap.t
new file mode 100644
index 0000000000..80cee20c5f
--- /dev/null
+++ b/lib/sigtrap.t
@@ -0,0 +1,104 @@
+#!./perl
+
+BEGIN {
+	chdir 't' if -d 't';
+	@INC = '../lib';
+}
+
+use strict;
+use Config;
+
+my $can_catch_kill = 0;
+
+use Test::More tests => 18;
+
+use_ok( 'sigtrap' );
+
+package main;
+local %SIG;
+
+# use a version of sigtrap.pm somewhat too high
+eval{ sigtrap->import(99999) };
+like( $@, qr/version 99999 required,/, 'import excessive version number' );
+
+# use an invalid signal name
+eval{ sigtrap->import('abadsignal') };
+like( $@, qr/^Unrecognized argument abadsignal/, 'send bad signame to import' );
+
+eval{ sigtrap->import('handler') };
+like( $@, qr/^No argument specified/, 'send handler without subref' );
+
+sigtrap->import('AFAKE');
+is( $SIG{AFAKE}, \&sigtrap::handler_traceback, 'install normal handler' );
+
+sigtrap->import('die', 'AFAKE', 'stack-trace', 'FAKE2');
+is( $SIG{AFAKE}, \&sigtrap::handler_die, 'install the die handler' );
+is( $SIG{FAKE2}, \&sigtrap::handler_traceback, 'install traceback handler' );
+
+my @normal = qw( HUP INT PIPE TERM );
+@SIG{@normal} = 1 x @normal;
+sigtrap->import('normal-signals');
+is( (grep { ref $_ } @SIG{@normal}), @normal, 'check normal-signals set' );
+
+my @error = qw( ABRT BUS EMT FPE ILL QUIT SEGV SYS TRAP );
+@SIG{@error} = 1 x @error;
+sigtrap->import('error-signals');
+is( (grep { ref $_ } @SIG{@error}), @error, 'check error-signals set' );
+
+my @old = qw( ABRT BUS EMT FPE ILL PIPE QUIT SEGV SYS TERM TRAP );
+@SIG{@old} = 1 x @old;
+sigtrap->import('old-interface-signals');
+is( (grep { ref $_ } @SIG{@old}), @old, 'check old-interface-signals set' );
+
+my $handler = sub {};
+sigtrap->import(handler => $handler, 'FAKE3');
+is( $SIG{FAKE3}, $handler, 'install custom handler' );
+
+$SIG{FAKE} = 'IGNORE';
+sigtrap->import('untrapped', 'FAKE');
+is( $SIG{FAKE}, 'IGNORE', 'respect existing handler set to IGNORE' );
+
+my $out = tie *STDOUT, 'TieOut';
+$SIG{FAKE} = 'DEFAULT';
+$sigtrap::Verbose = 1;
+sigtrap->import('any', 'FAKE');
+is( $SIG{FAKE}, \&sigtrap::handler_traceback, 'should set default handler' );
+like( $out->read, qr/^Installing handler/, 'does it talk with $Verbose set?' );
+
+# handler_die croaks with first argument
+eval { sigtrap::handler_die('FAKE') };
+like( $@, qr/^Caught a SIGFAKE/, 'does handler_die() croak?' );
+ 
+SKIP: {
+	skip( 'kill not implemented', 3) unless $can_catch_kill and
+		$Config{sig_name} =~ 'ABRT';
+
+	$out = tie *STDERR, 'TieOut';
+	my $line = __LINE__ + 1;
+	eval { sigtrap::handler_traceback('kudra') };
+	is( $@, '', 'handler_traceback() should not die' );
+	my $trace = $out->read();
+	like( $trace, qr/^Caught a SIGkudra/, 'check traceback message' );
+	like( $trace, qr/eval.+sigtrap.t.+$line/, 'check trace in traceback' );
+} # end of SKIP
+
+package TieOut;
+
+sub TIEHANDLE {
+	bless(\(my $scalar), $_[0]);
+}
+
+sub PRINT {
+	my $self = shift;
+	$$self .= join '', @_;
+}
+
+sub WRITE {
+	my ($self, $msg, $length) = @_;
+	$$self .= $msg;
+}
+
+sub read {
+	my $self = shift;
+	substr($$self, 0, length($$self), '');
+}