[perl #85476] Add tests to confirm fix of RT #49569.

Confirm that numify() on a value that can be represented exactly as
a Perl scalar integer is not converted to a floating point number,
e.g., that it returns 18446744073709551615, not 1.84467440737096e+19.

4 files changed, 24 insertions, 3 deletions

diff --git a/dist/Math-BigInt/t/bare_mbi.t b/dist/Math-BigInt/t/bare_mbi.t
index a73fd12337..d7139dd1a6 100644
--- a/dist/Math-BigInt/t/bare_mbi.t
+++ b/dist/Math-BigInt/t/bare_mbi.t
@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 
 use strict;
-use Test::More tests => 3619;
+use Test::More tests => 3623;
 
 BEGIN { unshift @INC, 't'; }
 
diff --git a/dist/Math-BigInt/t/bigintpm.inc b/dist/Math-BigInt/t/bigintpm.inc
index f5f0fd2812..e52a2713d3 100644
--- a/dist/Math-BigInt/t/bigintpm.inc
+++ b/dist/Math-BigInt/t/bigintpm.inc
@@ -524,6 +524,27 @@ is (ref($x),'Math::Foo');
 $x = $class->new('+inf'); is ($x,'inf');
 
 ###############################################################################
+# numify() and 64 bit integer support
+
+require Config;
+SKIP: {
+    skip("no 64 bit integer support", 4)
+      unless $Config::Config{use64bitint} || $Config::Config{use64bitall};
+
+    # The following should not give "1.84467440737096e+19".
+
+    $x = $class -> new(2) -> bpow(64) -> bdec();
+    is($x -> bstr(),   "18446744073709551615", "bigint 2**64-1 as string");
+    is($x -> numify(), "18446744073709551615", "bigint 2**64-1 as number");
+
+    # The following should not give "-9.22337203685478e+18".
+
+    $x = $class -> new(2) -> bpow(63) -> bneg();
+    is($x -> bstr(),   "-9223372036854775808", "bigint -2**63 as string");
+    is($x -> numify(), "-9223372036854775808", "bigint -2**63 as number");
+};
+
+###############################################################################
 ###############################################################################
 # the following tests only make sense with Math::BigInt::Calc or BareCalc or
 # FastCalc
diff --git a/dist/Math-BigInt/t/bigintpm.t b/dist/Math-BigInt/t/bigintpm.t
index d16844b347..cacdb8e2ec 100644
--- a/dist/Math-BigInt/t/bigintpm.t
+++ b/dist/Math-BigInt/t/bigintpm.t
@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 
 use strict;
-use Test::More tests => 3619 + 6;
+use Test::More tests => 3623 + 6;
 
 use Math::BigInt lib => 'Calc';
 
diff --git a/dist/Math-BigInt/t/sub_mbi.t b/dist/Math-BigInt/t/sub_mbi.t
index a999c0982b..668fd1979e 100644
--- a/dist/Math-BigInt/t/sub_mbi.t
+++ b/dist/Math-BigInt/t/sub_mbi.t
@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 
 use strict;
-use Test::More tests => 3619
+use Test::More tests => 3623
     + 5;	# +5 own tests
 
 BEGIN { unshift @INC, 't'; }