3 # test that config ( trap_nan => 1, trap_inf => 1) really works/dies
12 unshift @INC, '../lib'; # for running manually
18 my $mbi = 'Math::BigRat';
21 foreach my $class ($mbi)
23 # can do and defaults are okay?
24 ok ($class->can('config'));
25 ok ($class->config()->{trap_nan}, 0);
26 ok ($class->config()->{trap_inf}, 0);
29 $cfg = $class->config( trap_nan => 1 ); ok ($cfg->{trap_nan},1);
31 # can set via hash ref?
32 $cfg = $class->config( { trap_nan => 1 } ); ok ($cfg->{trap_nan},1);
34 # also test that new() still works normally
35 eval ("\$x = \$class->new('42'); \$x->bnan();");
36 ok ($@ =~/^Tried to set/, 1);
37 ok ($x,42); # after new() never modified
40 $cfg = $class->config( trap_nan => 0 ); ok ($cfg->{trap_nan},0);
43 $cfg = $class->config( trap_inf => 1 ); ok ($cfg->{trap_inf},1);
44 eval ("\$x = \$class->new('4711'); \$x->binf();");
45 ok ($@ =~/^Tried to set/, 1);
46 ok ($x,4711); # after new() never modified
49 eval ("\$x = \$class->new('4711'); \$x->bdiv(0);");
50 ok ($@ =~/^Tried to set/, 1);
51 ok ($x,4711); # after new() never modified
54 eval ("\$x = \$class->new('-0815'); \$x->bdiv(0);");
55 ok ($@ =~/^Tried to set/, 1);
56 ok ($x,-815); # after new() never modified
58 $cfg = $class->config( trap_nan => 1 );
60 eval ("\$x = \$class->new('0'); \$x->bdiv(0);");
61 ok ($@ =~/^Tried to set/, 1);
62 ok ($x,0); # after new() never modified
65 ##############################################################################
68 $cfg = Math::BigRat->config( trap_nan => 1 );
70 for my $trap (qw/0.1a +inf inf -inf/)
72 my $x = Math::BigRat->new('7/4');
74 eval ("\$x = \$mbi->new('$trap');");
75 print "# Got: $x\n" unless
76 ok ($x,'7/4'); # never modified since it dies
77 eval ("\$x = \$mbi->new('$trap');");
78 print "# Got: $x\n" unless
79 ok ($x,'7/4'); # never modified since it dies
80 eval ("\$x = \$mbi->new('$trap/7');");
81 print "# Got: $x\n" unless
82 ok ($x,'7/4'); # never modified since it dies