1#!/usr/bin/perl -w 2 3use Test; 4use strict; 5 6BEGIN 7 { 8 $| = 1; 9 # to locate the testing files 10 my $location = $0; $location =~ s/isa.t//i; 11 if ($ENV{PERL_CORE}) 12 { 13 # testing with the core distribution 14 @INC = qw(../t/lib); 15 } 16 unshift @INC, qw(../lib); 17 if (-d 't') 18 { 19 chdir 't'; 20 require File::Spec; 21 unshift @INC, File::Spec->catdir(File::Spec->updir, $location); 22 } 23 else 24 { 25 unshift @INC, $location; 26 } 27 print "# INC = @INC\n"; 28 29 plan tests => 7; 30 } 31 32use Math::BigInt::Subclass; 33use Math::BigFloat::Subclass; 34use Math::BigInt; 35use Math::BigFloat; 36 37use vars qw ($class $try $x $y $f @args $ans $ans1 $ans1_str $setup $CL); 38$class = "Math::BigInt::Subclass"; 39$CL = "Math::BigInt::Calc"; 40 41# Check that a subclass is still considered a BigInt 42ok ($class->new(123)->isa('Math::BigInt'),1); 43 44# ditto for plain Math::BigInt 45ok (Math::BigInt->new(123)->isa('Math::BigInt'),1); 46 47# But Math::BigFloats aren't 48ok (Math::BigFloat->new(123)->isa('Math::BigInt') || 0,0); 49 50# see what happens if we feed a Math::BigFloat into new() 51$x = Math::BigInt->new(Math::BigFloat->new(123)); 52ok (ref($x),'Math::BigInt'); 53ok ($x->isa('Math::BigInt'),1); 54 55# ditto for subclass 56$x = Math::BigInt->new(Math::BigFloat->new(123)); 57ok (ref($x),'Math::BigInt'); 58ok ($x->isa('Math::BigInt'),1); 59 60