lib/version/t/coretests.pm

#! /usr/local/perl -w
package main;
require Test::Harness;
*Verbose = \$Test::Harness::Verbose;
use Data::Dumper;
use File::Temp qw/tempfile/;
use File::Basename;

if ($Test::More::VERSION < 0.48) { # Fix for RT#48268
    local $^W;
    *main::use_ok = sub ($;@) {
	my ($pkg, $req, @args) = @_;
	eval "use $pkg $req ".join(' ',@args);
	is ${"$pkg\::VERSION"}, $req, 'Had to manually use version';
	# If we made it this far, we are ok.
    };
}

sub BaseTests {

    my ($CLASS, $method, $qv_declare) = @_;
    my $warning;
    local $SIG{__WARN__} = sub { $warning = $_[0] };

    # Insert your test code below, the Test module is use()ed here so read
    # its man page ( perldoc Test ) for help writing this test script.

    # Test bare number processing
    diag "tests with bare numbers" unless $ENV{PERL_CORE};
    $version = $CLASS->$method(5.005_03);
    is ( "$version" , "5.00503" , '5.005_03 eq 5.00503' );
    $version = $CLASS->$method(1.23);
    is ( "$version" , "1.23" , '1.23 eq "1.23"' );

    # Test quoted number processing
    diag "tests with quoted numbers" unless $ENV{PERL_CORE};
    $version = $CLASS->$method("5.005_03");
    is ( "$version" , "5.005_03" , '"5.005_03" eq "5.005_03"' );
    $version = $CLASS->$method("v1.23");
    is ( "$version" , "v1.23" , '"v1.23" eq "v1.23"' );

    # Test stringify operator
    diag "tests with stringify" unless $ENV{PERL_CORE};
    $version = $CLASS->$method("5.005");
    is ( "$version" , "5.005" , '5.005 eq "5.005"' );
    $version = $CLASS->$method("5.006.001");
    is ( "$version" , "5.006.001" , '5.006.001 eq v5.6.1' );
    unlike ($warning, qr/v-string without leading 'v' deprecated/, 'No leading v');
    $version = $CLASS->$method("v1.2.3_4");
    is ( "$version" , "v1.2.3_4" , 'alpha version 1.2.3_4 eq v1.2.3_4' );

    # test illegal formats
    diag "test illegal formats" unless $ENV{PERL_CORE};
    eval {my $version = $CLASS->$method("1.2_3_4")};
    like($@, qr/multiple underscores/,
	"Invalid version format (multiple underscores)");

    eval {my $version = $CLASS->$method("1.2_3.4")};
    like($@, qr/underscores before decimal/,
	"Invalid version format (underscores before decimal)");

    eval {my $version = $CLASS->$method("1_2")};
    like($@, qr/alpha without decimal/,
	"Invalid version format (alpha without decimal)");

    eval { $version = $CLASS->$method("1.2b3")};
    like($@, qr/non-numeric data/,
	"Invalid version format (non-numeric data)");

    eval { $version = $CLASS->$method("-1.23")};
    like($@, qr/negative version number/,
	"Invalid version format (negative version number)");

    # from here on out capture the warning and test independently
    {
    eval{$version = $CLASS->$method("99 and 44/100 pure")};

    like($@, qr/non-numeric data/,
	"Invalid version format (non-numeric data)");

    eval{$version = $CLASS->$method("something")};
    like($@, qr/non-numeric data/,
	"Invalid version format (non-numeric data)");

    # reset the test object to something reasonable
    $version = $CLASS->$method("1.2.3");

    # Test boolean operator
    ok ($version, 'boolean');

    # Test class membership
    isa_ok ( $version, $CLASS );

    # Test comparison operators with self
    diag "tests with self" unless $ENV{PERL_CORE};
    is ( $version <=> $version, 0, '$version <=> $version == 0' );
    ok ( $version == $version, '$version == $version' );

    # Test Numeric Comparison operators
    # test first with non-object
    $version = $CLASS->$method("5.006.001");
    $new_version = "5.8.0";
    diag "numeric tests with non-objects" unless $ENV{PERL_CORE};
    ok ( $version == $version, '$version == $version' );
    ok ( $version < $new_version, '$version < $new_version' );
    ok ( $new_version > $version, '$new_version > $version' );
    ok ( $version != $new_version, '$version != $new_version' );

    # now test with existing object
    $new_version = $CLASS->$method($new_version);
    diag "numeric tests with objects" unless $ENV{PERL_CORE};
    ok ( $version < $new_version, '$version < $new_version' );
    ok ( $new_version > $version, '$new_version > $version' );
    ok ( $version != $new_version, '$version != $new_version' );

    # now test with actual numbers
    diag "numeric tests with numbers" unless $ENV{PERL_CORE};
    ok ( $version->numify() == 5.006001, '$version->numify() == 5.006001' );
    ok ( $version->numify() <= 5.006001, '$version->numify() <= 5.006001' );
    ok ( $version->numify() < 5.008, '$version->numify() < 5.008' );
    #ok ( $version->numify() > v5.005_02, '$version->numify() > 5.005_02' );

    # test with long decimals
    diag "Tests with extended decimal versions" unless $ENV{PERL_CORE};
    $version = $CLASS->$method(1.002003);
    ok ( $version == "1.2.3", '$version == "1.2.3"');
    ok ( $version->numify == 1.002003, '$version->numify == 1.002003');
    $version = $CLASS->$method("2002.09.30.1");
    ok ( $version == "2002.9.30.1",'$version == 2002.9.30.1');
    ok ( $version->numify == 2002.009030001,
	'$version->numify == 2002.009030001');

    # now test with alpha version form with string
    $version = $CLASS->$method("1.2.3");
    $new_version = "1.2.3_4";
    diag "numeric tests with alpha-style non-objects" unless $ENV{PERL_CORE};
    ok ( $version < $new_version, '$version < $new_version' );
    ok ( $new_version > $version, '$new_version > $version' );
    ok ( $version != $new_version, '$version != $new_version' );

    $version = $CLASS->$method("1.2.4");
    diag "numeric tests with alpha-style non-objects"
	unless $ENV{PERL_CORE};
    ok ( $version > $new_version, '$version > $new_version' );
    ok ( $new_version < $version, '$new_version < $version' );
    ok ( $version != $new_version, '$version != $new_version' );

    # now test with alpha version form with object
    $version = $CLASS->$method("1.2.3");
    $new_version = $CLASS->$method("1.2.3_4");
    diag "tests with alpha-style objects" unless $ENV{PERL_CORE};
    ok ( $version < $new_version, '$version < $new_version' );
    ok ( $new_version > $version, '$new_version > $version' );
    ok ( $version != $new_version, '$version != $new_version' );
    ok ( !$version->is_alpha, '!$version->is_alpha');
    ok ( $new_version->is_alpha, '$new_version->is_alpha');

    $version = $CLASS->$method("1.2.4");
    diag "tests with alpha-style objects" unless $ENV{PERL_CORE};
    ok ( $version > $new_version, '$version > $new_version' );
    ok ( $new_version < $version, '$new_version < $version' );
    ok ( $version != $new_version, '$version != $new_version' );

    $version = $CLASS->$method("1.2.3.4");
    $new_version = $CLASS->$method("1.2.3_4");
    diag "tests with alpha-style objects with same subversion"
	unless $ENV{PERL_CORE};
    ok ( $version > $new_version, '$version > $new_version' );
    ok ( $new_version < $version, '$new_version < $version' );
    ok ( $version != $new_version, '$version != $new_version' );

    diag "test implicit [in]equality" unless $ENV{PERL_CORE};
    $version = $CLASS->$method("v1.2.3");
    $new_version = $CLASS->$method("1.2.3.0");
    ok ( $version == $new_version, '$version == $new_version' );
    $new_version = $CLASS->$method("1.2.3_0");
    ok ( $version == $new_version, '$version == $new_version' );
    $new_version = $CLASS->$method("1.2.3.1");
    ok ( $version < $new_version, '$version < $new_version' );
    $new_version = $CLASS->$method("1.2.3_1");
    ok ( $version < $new_version, '$version < $new_version' );
    $new_version = $CLASS->$method("1.1.999");
    ok ( $version > $new_version, '$version > $new_version' );

    diag "test with version class names" unless $ENV{PERL_CORE};
    $version = $CLASS->$method("v1.2.3");
    eval { () = $version < 'version' };
    like $@, qr/^Invalid version format/, "error with $version < 'version'";

    # that which is not expressly permitted is forbidden
    diag "forbidden operations" unless $ENV{PERL_CORE};
    ok ( !eval { ++$version }, "noop ++" );
    ok ( !eval { --$version }, "noop --" );
    ok ( !eval { $version/1 }, "noop /" );
    ok ( !eval { $version*3 }, "noop *" );
    ok ( !eval { abs($version) }, "noop abs" );

SKIP: {
    skip "version require'd instead of use'd, cannot test $qv_declare", 3
	unless defined $qv_declare;
    # test the $qv_declare() sub
    diag "testing $qv_declare" unless $ENV{PERL_CORE};
    $version = $CLASS->$qv_declare("1.2");
    is ( "$version", "v1.2", $qv_declare.'("1.2") == "1.2.0"' );
    $version = $CLASS->$qv_declare(1.2);
    is ( "$version", "v1.2", $qv_declare.'(1.2) == "1.2.0"' );
    isa_ok( $CLASS->$qv_declare('5.008'), $CLASS );
}

    # test creation from existing version object
    diag "create new from existing version" unless $ENV{PERL_CORE};
    ok (eval {$new_version = $CLASS->$method($version)},
	    "new from existing object");
    ok ($new_version == $version, "class->$method($version) identical");
    $new_version = $version->$method(0);
    isa_ok ($new_version, $CLASS );
    is ($new_version, "0", "version->$method() doesn't clone");
    $new_version = $version->$method("1.2.3");
    is ($new_version, "1.2.3" , '$version->$method("1.2.3") works too');

    # test the CVS revision mode
    diag "testing CVS Revision" unless $ENV{PERL_CORE};
    $version = new $CLASS qw$Revision: 1.2$;
    ok ( $version == "1.2.0", 'qw$Revision: 1.2$ == 1.2.0' );
    $version = new $CLASS qw$Revision: 1.2.3.4$;
    ok ( $version == "1.2.3.4", 'qw$Revision: 1.2.3.4$ == 1.2.3.4' );

    # test the CPAN style reduced significant digit form
    diag "testing CPAN-style versions" unless $ENV{PERL_CORE};
    $version = $CLASS->$method("1.23_01");
    is ( "$version" , "1.23_01", "CPAN-style alpha version" );
    ok ( $version > 1.23, "1.23_01 > 1.23");
    ok ( $version < 1.24, "1.23_01 < 1.24");

    # test reformed UNIVERSAL::VERSION
    diag "Replacement UNIVERSAL::VERSION tests" unless $ENV{PERL_CORE};

    my $error_regex = $] < 5.006
	? 'version \d required'
	: 'does not define \$t.{7}::VERSION';

    {
	my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
	(my $package = basename($filename)) =~ s/\.pm$//;
	print $fh "package $package;\n\$$package\::VERSION=0.58;\n1;\n";
	close $fh;

	$version = 0.58;
	eval "use lib '.'; use $package $version";
	unlike($@, qr/$package version $version/,
		'Replacement eval works with exact version');

	# test as class method
	$new_version = $package->VERSION;
	cmp_ok($new_version,'==',$version, "Called as class method");

	eval "print Completely::Unknown::Module->VERSION";
	if ( $] < 5.008 ) {
	    unlike($@, qr/$error_regex/,
		"Don't freak if the module doesn't even exist");
	}
	else {
	    unlike($@, qr/defines neither package nor VERSION/,
		"Don't freak if the module doesn't even exist");
	}

	# this should fail even with old UNIVERSAL::VERSION
	$version += 0.01;
	eval "use lib '.'; use $package $version";
	like($@, qr/$package version $version/,
		'Replacement eval works with incremented version');

	$version =~ s/0+$//; #convert to string and remove trailing 0's
	chop($version);	# shorten by 1 digit, should still succeed
	eval "use lib '.'; use $package $version";
	unlike($@, qr/$package version $version/,
		'Replacement eval works with single digit');

	# this would fail with old UNIVERSAL::VERSION
	$version += 0.1;
	eval "use lib '.'; use $package $version";
	like($@, qr/$package version $version/,
		'Replacement eval works with incremented digit');
	unlink $filename;
    }

    { # dummy up some variously broken modules for testing
	my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
	(my $package = basename($filename)) =~ s/\.pm$//;
	print $fh "1;\n";
	close $fh;

	eval "use lib '.'; use $package 3;";
	if ( $] < 5.008 ) {
	    like($@, qr/$error_regex/,
		'Replacement handles modules without package or VERSION');
	}
	else {
	    like($@, qr/defines neither package nor VERSION/,
		'Replacement handles modules without package or VERSION');
	}
	eval "use lib '.'; use $package; \$version = $package->VERSION";
	unlike ($@, qr/$error_regex/,
	    'Replacement handles modules without package or VERSION');
	ok (!defined($version), "Called as class method");
	unlink $filename;
    }

    { # dummy up some variously broken modules for testing
	my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
	(my $package = basename($filename)) =~ s/\.pm$//;
	print $fh "package $package;\n#look ma no VERSION\n1;\n";
	close $fh;
	eval "use lib '.'; use $package 3;";
	like ($@, qr/$error_regex/,
	    'Replacement handles modules without VERSION');
	eval "use lib '.'; use $package; print $package->VERSION";
	unlike ($@, qr/$error_regex/,
	    'Replacement handles modules without VERSION');
	unlink $filename;
    }

    { # dummy up some variously broken modules for testing
	my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
	(my $package = basename($filename)) =~ s/\.pm$//;
	print $fh "package $package;\n\@VERSION = ();\n1;\n";
	close $fh;
	eval "use lib '.'; use $package 3;";
	like ($@, qr/$error_regex/,
	    'Replacement handles modules without VERSION');
	eval "use lib '.'; use $package; print $package->VERSION";
	unlike ($@, qr/$error_regex/,
	    'Replacement handles modules without VERSION');
	unlink $filename;
    }
SKIP:    { # https://rt.perl.org/rt3/Ticket/Display.html?id=95544
	skip "version require'd instead of use'd, cannot test UNIVERSAL::VERSION", 2
	    unless defined $qv_declare;
	my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
	(my $package = basename($filename)) =~ s/\.pm$//;
	print $fh "package $package;\n\$VERSION = '3alpha';\n1;\n";
	close $fh;
	eval "use lib '.'; use $package; print $package->VERSION";
	like ($@, qr/Invalid version format \(non-numeric data\)/,
	    'Warn about bad \$VERSION');
	eval "use lib '.'; use $package 1;";
	like ($@, qr/Invalid version format \(non-numeric data\)/,
	    'Warn about bad $VERSION');
    }

SKIP: 	{
	skip 'Cannot test bare v-strings with Perl < 5.6.0', 4
		if $] < 5.006_000;
	diag "Tests with v-strings" unless $ENV{PERL_CORE};
	$version = $CLASS->$method(1.2.3);
	ok("$version" eq "v1.2.3", '"$version" eq 1.2.3');
	$version = $CLASS->$method(1.0.0);
	$new_version = $CLASS->$method(1);
	ok($version == $new_version, '$version == $new_version');
	skip "version require'd instead of use'd, cannot test declare", 1
	    unless defined $qv_declare;
	$version = &$qv_declare(1.2.3);
	ok("$version" eq "v1.2.3", 'v-string initialized $qv_declare()');
    }

SKIP: 	{
	skip 'Cannot test bare alpha v-strings with Perl < 5.8.1', 2
		if $] lt 5.008_001;
	diag "Tests with bare alpha v-strings" unless $ENV{PERL_CORE};
	$version = $CLASS->$method(v1.2.3_4);
	is($version, "v1.2.3_4", '"$version" eq "v1.2.3_4"');
	$version = $CLASS->$method(eval "v1.2.3_4");
	is($version, "v1.2.3_4", '"$version" eq "v1.2.3_4" (from eval)');
    }

    diag "Tests with real-world (malformed) data" unless $ENV{PERL_CORE};

    # trailing zero testing (reported by Andreas Koenig).
    $version = $CLASS->$method("1");
    ok($version->numify eq "1.000", "trailing zeros preserved");
    $version = $CLASS->$method("1.0");
    ok($version->numify eq "1.000", "trailing zeros preserved");
    $version = $CLASS->$method("1.0.0");
    ok($version->numify eq "1.000000", "trailing zeros preserved");
    $version = $CLASS->$method("1.0.0.0");
    ok($version->numify eq "1.000000000", "trailing zeros preserved");

    # leading zero testing (reported by Andreas Koenig).
    $version = $CLASS->$method(".7");
    ok($version->numify eq "0.700", "leading zero inferred");

    # leading space testing (reported by Andreas Koenig).
    $version = $CLASS->$method(" 1.7");
    ok($version->numify eq "1.700", "leading space ignored");

    # RT 19517 - deal with undef and 'undef' initialization
    ok("$version" ne 'undef', "Undef version comparison #1");
    ok("$version" ne undef, "Undef version comparison #2");
    $version = $CLASS->$method('undef');
    unlike($warning, qr/^Version string 'undef' contains invalid data/,
	"Version string 'undef'");

    $version = $CLASS->$method(undef);
    like($warning, qr/^Use of uninitialized value/,
	"Version string 'undef'");
    ok($version == 'undef', "Undef version comparison #3");
    ok($version ==  undef,  "Undef version comparison #4");
    eval "\$version = \$CLASS->$method()"; # no parameter at all
    unlike($@, qr/^Bizarre copy of CODE/, "No initializer at all");
    ok($version == 'undef', "Undef version comparison #5");
    ok($version ==  undef,  "Undef version comparison #6");

    $version = $CLASS->$method(0.000001);
    unlike($warning, qr/^Version string '1e-06' contains invalid data/,
	"Very small version objects");
    }

SKIP: {
	my $warning;
	local $SIG{__WARN__} = sub { $warning = $_[0] };
	# dummy up a legal module for testing RT#19017
	my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
	(my $package = basename($filename)) =~ s/\.pm$//;
	print $fh <<"EOF";
package $package;
use $CLASS; \$VERSION = ${CLASS}->new('0.0.4');
1;
EOF
	close $fh;

	eval "use lib '.'; use $package 0.000008;";
	like ($@, qr/^$package version 0.000008 required/,
	    "Make sure very small versions don't freak");
	eval "use lib '.'; use $package 1;";
	like ($@, qr/^$package version 1 required/,
	    "Comparing vs. version with no decimal");
	eval "use lib '.'; use $package 1.;";
	like ($@, qr/^$package version 1 required/,
	    "Comparing vs. version with decimal only");
	if ( $] < 5.006_000 ) {
	    skip 'Cannot "use" extended versions with Perl < 5.6.0', 3;
	}
	eval "use lib '.'; use $package v0.0.8;";
	my $regex = "^$package version v0.0.8 required";
	like ($@, qr/$regex/, "Make sure very small versions don't freak");

	$regex =~ s/8/4/; # set for second test
	eval "use lib '.'; use $package v0.0.4;";
	unlike($@, qr/$regex/, 'Succeed - required == VERSION');
	cmp_ok ( $package->VERSION, 'eq', '0.0.4', 'No undef warnings' );
	unlink $filename;
    }

SKIP: {
    skip 'Cannot test "use base qw(version)"  when require is used', 3
	unless defined $qv_declare;
    my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
    (my $package = basename($filename)) =~ s/\.pm$//;
    print $fh <<"EOF";
package $package;
use base qw(version);
1;
EOF
    close $fh;
    # need to eliminate any other $qv_declare()'s
    undef *{"main\::$qv_declare"};
    ok(!defined(&{"main\::$qv_declare"}), "make sure we cleared $qv_declare() properly");
    eval "use lib '.'; use $package qw/declare qv/;";
    ok(defined(&{"main\::$qv_declare"}), "make sure we exported $qv_declare() properly");
    isa_ok( &$qv_declare(1.2), $package);
    unlink $filename;
}

SKIP: {
	if ( $] < 5.006_000 ) {
	    skip 'Cannot "use" extended versions with Perl < 5.6.0', 3;
	}
	my ($fh, $filename) = tempfile('tXXXXXXX', SUFFIX => '.pm', UNLINK => 1);
	(my $package = basename($filename)) =~ s/\.pm$//;
	print $fh <<"EOF";
package $package;
\$VERSION = 1.0;
1;
EOF
	close $fh;
	eval "use lib '.'; use $package 1.001;";
	like ($@, qr/^$package version 1.001 required/,
	    "User typed numeric so we error with numeric");
	eval "use lib '.'; use $package v1.1.0;";
	like ($@, qr/^$package version v1.1.0 required/,
	    "User typed extended so we error with extended");
	unlink $filename;
    }

    eval 'my $v = $CLASS->$method("1._1");';
    unlike($@, qr/^Invalid version format \(alpha with zero width\)/,
	"Invalid version format 1._1");

    {
	my $warning;
	local $SIG{__WARN__} = sub { $warning = $_[0] };
	eval 'my $v = $CLASS->$method(~0);';
	unlike($@, qr/Integer overflow in version/, "Too large version");
	like($warning, qr/Integer overflow in version/, "Too large version");
    }

    {
        local $Data::Dumper::Sortkeys= 1;
	# http://rt.cpan.org/Public/Bug/Display.html?id=30004
	my $v1 = $CLASS->$method("v0.1_1");
	(my $alpha1 = Dumper($v1)) =~ s/.+'alpha' => ([^,]+),.+/$1/ms;
	my $v2 = $CLASS->$method($v1);
	(my $alpha2 = Dumper($v2)) =~ s/.+'alpha' => ([^,]+),.+/$1/ms;
	is $alpha2, $alpha1, "Don't fall for Data::Dumper's tricks";
    }

    {
	# http://rt.perl.org/rt3/Ticket/Display.html?id=56606
	my $badv = bless { version => [1,2,3] }, "version";
	is $badv, '1.002003', "Deal with badly serialized versions from YAML";
	my $badv2 = bless { qv => 1, version => [1,2,3] }, "version";
	is $badv2, 'v1.2.3', "Deal with badly serialized versions from YAML ";
    }

    {
	# https://rt.cpan.org/Public/Bug/Display.html?id=70950
	# test indirect usage of version objects
	my $sum = 0;
	eval '$sum += $CLASS->$method("v2.0.0")';
	like $@, qr/operation not supported with version object/,
	    'No math operations with version objects';
	# test direct usage of version objects
	my $v = $CLASS->$method("v2.0.0");
	eval '$v += 1';
	like $@, qr/operation not supported with version object/,
	    'No math operations with version objects';
    }

    {
	# https://rt.cpan.org/Ticket/Display.html?id=72365
	# https://rt.perl.org/rt3/Ticket/Display.html?id=102586
    	# https://rt.cpan.org/Ticket/Display.html?id=78328
	eval 'my $v = $CLASS->$method("version")';
	like $@, qr/Invalid version format/,
	    "The string 'version' is not a version for $method";
	eval 'my $v = $CLASS->$method("ver510n")';
	like $@, qr/Invalid version format/,
	    'All strings starting with "v" are not versions';
    }

SKIP: {
	if ( $] < 5.006_000 ) {
	    skip 'No v-string support at all < 5.6.0', 2;
	}
	# https://rt.cpan.org/Ticket/Display.html?id=49348
	my $v = $CLASS->$method("420");
	is "$v", "420", 'Correctly guesses this is not a v-string';
	$v = $CLASS->$method(4.2.0);
	is "$v", 'v4.2.0', 'Correctly guess that this is a v-string';
    }
SKIP: {
	if ( $] < 5.006_000 ) {
	    skip 'No v-string support at all < 5.6.0', 4;
	}
	# https://rt.cpan.org/Ticket/Display.html?id=50347
	# Check that the qv() implementation does not change

	ok $CLASS->$method(1.2.3) < $CLASS->$method(1.2.3.1), 'Compare 3 and 4 digit v-strings' ;
	ok $CLASS->$method(v1.2.3) < $CLASS->$method(v1.2.3.1), 'Compare 3 and 4 digit v-strings, leaving v';
	ok $CLASS->$method("1.2.3") < $CLASS->$method("1.2.3.1"), 'Compare 3 and 4 digit v-strings, quoted';
	ok $CLASS->$method("v1.2.3") < $CLASS->$method("v1.2.3.1"), 'Compare 3 and 4 digit v-strings, quoted leading v';
    }

    {
	eval '$CLASS->$method("version")';
	pass("no crash with ${CLASS}->${method}('version')");
	{
	    package _102586;
	    sub TIESCALAR { bless [] }
	    sub FETCH { "version" }
	    sub STORE { }
	    my $v;
	    tie $v, __PACKAGE__;
	    $v = $CLASS->$method(1);
	    eval '$CLASS->$method($v)';
	}
	pass('no crash with version->new($tied) where $tied returns "version"');
    }

    { # [perl #112478]
	$_112478::VERSION = 9e99;
	ok eval { _112478->VERSION(9e99); 1 }, '->VERSION(9e99) succeeds'
	    or diag $@;
	$_112478::VERSION = 1;
	eval { _112478->VERSION(9e99) };
	unlike $@, qr/panic/, '->VERSION(9e99) does not panic';
    }

    { # https://rt.cpan.org/Ticket/Display.html?id=79259
	my $v = $CLASS->new("0.52_0");
	ok $v->is_alpha, 'Just checking';
	is $v->numify, '0.520', 'Correctly nummified';
    }

}

1;
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