/
int.t
305 lines (255 loc) · 11 KB
/
int.t
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use v6;
use Test;
plan 163;
# L<S32::Numeric/Real/=item truncate>
# truncate and .Int are synonynms.
# Possibly more tests for truncate should be added here, too.
=begin pod
Basic tests for the int() builtin
=end pod
# basic sanity:
is(-0, 0, '-0 is the same as 0 - hey, they are integers ;-)');
isa-ok( EVAL(1.perl), Int, 'EVAL 1.perl is Int' );
is( EVAL(1.perl), 1, 'EVAL 1.perl is 1' );
isa-ok( EVAL((-12).perl), Int, 'EVAL -12.perl is Int' );
is( EVAL((-12).perl), -12, 'EVAL -12.perl is -12' );
isa-ok( EVAL(0.perl), Int, 'EVAL 0.perl is Int' );
is( EVAL(0.perl), 0, 'EVAL 0.perl is 0' );
isa-ok( EVAL((-0).perl), Int, 'EVAL -0.perl is Int' );
is( EVAL((-0).perl), -0, 'EVAL -0.perl is 0' );
is((-1).Int, -1, "(-1).Int is -1");
is(0.Int, 0, "0.Int is 0");
is(1.Int, 1, "1.Int is 1");
is(3.14159265.Int, 3, "3.14159265.Int is 3");
is((-3.14159265).Int, -3, "(-3.14159265).Int is -3");
is(0.999.Int, 0, "0.999.Int is 0");
is(0.51.Int, 0, "0.51.Int is 0");
is(0.5.Int, 0, "0.5.Int is 0");
is(0.49.Int, 0, "0.49.Int is 0");
is(0.1.Int, 0, "0.1.Int is 0");
isa-ok(0.1.Int, Int, '0.1.Int returns an Int');
is((-0.999).Int, 0, "(-0.999).Int is 0");
is((-0.51).Int, 0, "(-0.51).Int is 0");
is((-0.5).Int, 0, "(-0.5).Int is 0");
is((-0.49).Int, 0, "(-0.49).Int is 0");
is((-0.1).Int, 0, "(-0.1).Int is 0");
isa-ok((-0.1).Int, Int, 'int(-0.1) returns an Int');
is(1.999.Int, 1, "int(1.999) is 1");
is(1.51.Int, 1, "int(1.51) is 1");
is(1.5.Int, 1, "int(1.5) is 1");
is(1.49.Int, 1, "int(1.49) is 1");
is(1.1.Int, 1, "int(1.1) is 1");
is((-1.999).Int, -1, "int(-1.999) is -1");
is((-1.51).Int, -1, "int(-1.51) is -1");
is((-1.5).Int, -1, "int(-1.5) is -1");
is((-1.49).Int, -1, "int(-1.49) is -1");
is((-1.1).Int, -1, "int(-1.1) is -1");
is(1.999.Num.Int, 1, "int(1.999.Num) is 1");
is(1.1.Num.Int, 1, "int(1.1.Num) is 1");
is((-1.999).Num.Int, -1, "int(-1.999.Num) is -1");
is((-1.1).Num.Int, -1, "int(-1.1.Num) is -1");
nok ?0, "?0 is false";
isa-ok ?0, Bool, "?0 is Bool";
ok ?1, "?1 is true";
isa-ok ?1, Bool, "?1 is Bool";
ok ?42, "?42 is true";
isa-ok ?42, Bool, "?42 is Bool";
nok 0.Bool, "0.Bool is false";
isa-ok 0.Bool, Bool, "0.Bool is Bool";
ok 1.Bool, "1.Bool is true";
isa-ok 1.Bool, Bool, "1.Bool is Bool";
ok 42.Bool, "42.Bool is true";
isa-ok 42.Bool, Bool, "42.Bool is Bool";
is('-1.999'.Int, -1, "int('-1.999') is -1");
is('0x123'.Int, 0x123, "int('0x123') is 0x123");
is('0d456'.Int, 0d456, "int('0d456') is 0d456");
throws-like q['0o678'.Int], X::Str::Numeric,
'conversion from string to number fails because of trailing characters (1)';
throws-like q['3e4d5'.Int], X::Str::Numeric,
'conversion from string to number fails because of trailing characters (2)';
#?DOES 24
{
sub __int( $s ) {
my $pos = $s.index('.');
if defined($pos) { return substr($s, 0, $pos); }
return $s;
};
# Check the defaulting to $_
for 0, 0.0, 1, 50, 60.0, 99.99, 0.4, 0.6, -1, -50, -60.0, -99.99 {
my $int = __int($_.Num);
is(.Int, $int, "integral value for $_ is $int");
isa-ok(.Int, Int);
}
}
# Special values
is((1.9e3).Int, 1900, "int 1.9e3 is 1900");
# RT #65132
throws-like 'int 3.14', X::Syntax::Confused,
'dies: int 3.14 (prefix:int is gone)';
is 0.lsb, Nil, "0.lsb is Nil";
is 1.lsb, 0, "1.lsb is 0";
is 2.lsb, 1, "2.lsb is 1";
is 256.lsb, 8, "256.lsb is 8";
is (-1).lsb, 0, "(-1).lsb is 0"; # 1111 1111
is (-2).lsb, 1, "(-2).lsb is 1"; # 1111 1110
is (-126).lsb, 1, "(-126).lsb is 1"; # 1000 0010
is (-127).lsb, 0, "(-127).lsb is 0"; # 1000 0001
is (-128).lsb, 7, "(-128).lsb is 7"; # 1000 0000
is (-32768).lsb, 15, "(-32768).lsb is 15";
is 0.msb, Nil, "0.msb is Nil";
is 1.msb, 0, "1.msb is 0";
is 2.msb, 1, "2.msb is 1";
is 256.msb, 8, "256.msb is 8";
is (-1).msb, 0, "(-1).msb is 0"; # 1111 1111
is (-2).msb, 1, "(-2).msb is 1"; # 1111 1110
is (-126).msb, 7, "(-126).msb is 7"; # 1000 0010
is (-127).msb, 7, "(-127).msb is 7"; # 1000 0001
is (-128).msb, 7, "(-128).msb is 7"; # 1000 0000
is (-129).msb, 8, "(-129).msb is 8";
is (-32768).msb, 15, "(-32768).msb is 15";
# Test issue fixed by https://github.com/rakudo/rakudo/commit/84b7ebdf42
subtest 'smartmatching :U numeric against :D numeric does not throw' => {
plan 60;
for -42, 42, τ, .5, <1+3i>,
<-42>, <42>, <1e0>, <1/3>, <-1-3i > -> $what {
is (Numeric ~~ $what), False, "Numeric:U ~~ $what ($what.^name())";
is (Int ~~ $what), False, "Int:U ~~ $what ($what.^name())";
is (UInt ~~ $what), False, "UInt:U ~~ $what ($what.^name())";
is (Num ~~ $what), False, "Num:U ~~ $what ($what.^name())";
is (Rat ~~ $what), False, "Rat:U ~~ $what ($what.^name())";
is (Complex ~~ $what), False, "Complex:U ~~ $what ($what.^name())";
}
}
{ # coverage; 2016-10-05
my UInt $u;
is-deeply $u.defined, Bool::False, 'undefined UInt is undefined';
cmp-ok $u, '~~', UInt, 'UInt var smartmatches True against UInt';
is $u.HOW.^name, 'Perl6::Metamodel::SubsetHOW', 'UInt is a subset';
throws-like { UInt.new }, Exception,
'attempting to instantiate UInt throws';
is-deeply ($u = 42), 42, 'Can store a positive Int in UInt';
is-deeply ($u = 0), 0, 'Can store a zero in UInt';
throws-like ｢my UInt $z = -42｣, X::TypeCheck::Assignment,
'UInt rejects negative numbers';
throws-like ｢my UInt $y = "foo"｣, X::TypeCheck::Assignment,
'UInt rejects other types';
is-deeply ($u = Nil), UInt, 'Can assign Nil to UInt';
my $u2 is default(72);
is-deeply $u2, 72, 'is default() trait works on brand new UInt';
is-deeply ($u2 = 1337), 1337, 'is default()ed UInt can take values';
is-deeply ($u2 = Nil), 72,
'Nil assigned to is default()ed UInt gives default values';
}
subtest 'Int.new' => { # coverage; 2016-10-05
plan 11;
subtest 'returns a new object (not a cached constant)' => {
plan 3;
{
my int $orig = 2; my $new := Int.new: $orig;
$new does my role Meows {};
is-deeply $orig.^name, 'Int', 'Int.new: int';
}
{
my $orig := 2; my $new := Int.new: $orig;
$new does my role Meows {};
is-deeply $orig.^name, 'Int', 'Int.new: Int';
}
{
my $orig := 2; my $new := Int.new: "2";
$new does my role Meows {};
is-deeply $orig.^name, 'Int', 'Int.new: Str';
}
}
for '42', 42e0, 420/10, 42, ^42, (|^42,), [|^42] -> $n {
is-deeply Int.new($n), 42,
"Can use $n.^name() to construct an Int from";
}
is-deeply Int.new, 0, 'no args default to 0';
throws-like { Int.new: <a b c>, 42, 'meow', 'wrong', 'args' },
X::Multi::NoMatch,
'does not incorrectly say that .new can only take named args';
# RT#132128
subtest '.new of subclass of Int' => {
plan 3*
my @tests = no-arg => \(), Int => \( 42 ),
int => \(my int $ = 42), Str => \('42');
my class Foo is Int {};
for @tests -> (:key($what), :value($args)) {
my Foo $x;
lives-ok { $x = Foo.new: |$args }, "lives ($what)";
isa-ok $x, Foo, "returns subclass ($what)";
cmp-ok $x, '==', $args[0]//0, "right numeric value ($what)";
}
}
}
{ # coverage; 2016-10-05
my int $i0 = 0;
my int $i1 = 1;
my int $i2 = 2;
my int $i3 = 3;
my int $i5 = 5;
my int $i6 = 6;
my int $i8 = 8;
my int $iL = 2**62;
my int $iu;
is-deeply 42.narrow, 42, 'Int.narrow gives Int';
is-deeply $i2 ** $i3, $i8, 'int ** int returns int';
is-deeply $iu ** $i3, $i0, '0 (uninitialized int) ** int returns 0';
is-deeply $i8 ** $iu, $i1, 'int ** 0 (uninitialized int) returns 1';
is-deeply $i2 * $i3, $i6, 'int * int returns int';
is-deeply $iu * $i3, $i0, '0 (uninitialized int) * int returns 0';
is-deeply $i8 * $iu, $i0, 'int * 0 (uninitialized int) returns 0';
is-deeply $i5 div $i2, $i2, 'int(5) div int(2) returns int(2)';
is-deeply $i8 div $i3, $i2, 'int(8) div int(3) returns int(2)';
is-deeply $i0 div $i2, $i0, '0 div int returns 0';
is-deeply $iu div $i2, $i0, '0 (uninitialized int) div int returns 0';
throws-like { $i5 div $i0 }, Exception, 'int div 0 throws';
throws-like { $i5 div $iu }, Exception, 'int div 0 (uninit. int) throws';
is-deeply $i5 % $i2, $i1, 'int(5) % int(2) returns int(1)';
is-deeply $i8 % $i2, $i0, 'int(8) % int(2) returns int(0)';
is-deeply $i0 % $i2, $i0, '0 % int returns 0';
is-deeply $iu % $i2, $i0, '0 (uninitialized int) div int returns 0';
is-deeply $i3 lcm $i2, $i6, 'int(3) lcm int(2) returns int(6)';
is-deeply $i3 lcm $i2, $i6, 'int(3) lcm int(2) returns int(6)';
is-deeply $i8 lcm $i8, $i8, 'int(8) lcm int(8) returns int(8)';
is-deeply $i0 lcm $i8, $i0, 'int(0) lcm int(8) returns int(0)';
is-deeply $iu lcm $i8, $i0, 'int(uninitialized) lcm int(8) returns int(0)';
is-deeply $i3 gcd $i2, $i1, 'int(3) gcd int(2) returns int(1)';
is-deeply $i8 gcd $i2, $i2, 'int(8) gcd int(2) returns int(2)';
is-deeply $i8 gcd $i0, $i8, 'int(8) gcd int(0) returns int(8)';
is-deeply $i0 gcd $i8, $i8, 'int(0) gcd int(8) returns int(8)';
is-deeply $i0 gcd $i0, $i0, 'int(0) gcd int(0) returns int(0)';
is-deeply $iu gcd $i0, $i0, 'int(uninitialized) gcd int(0) returns int(0)';
is-deeply $i8 === $i8, Bool::True, 'int === int (True)';
is-deeply $i8 === $i2, Bool::False, 'int === int (False)';
is-deeply $iu === $i0, Bool::True, 'int (uninit.) === int(0) (True)';
is-deeply $iu.chr, "\x[0]", 'int(uninit.) .chr works';
is-deeply $i0.chr, "\x[0]", 'int(0) .chr works';
is-deeply $i8.chr, "\x[8]", 'int(8) .chr works';
}
{ # coverage; 2016-10-06
is-deeply expmod(10, 3, 11), 10, 'expmod with Ints (1)';
is-deeply expmod(10, 0, 11), 1, 'expmod with Ints (2)';
is-deeply expmod("10", 0e0, 110/10), 1, 'expmod with other types';
is-deeply lsb(0b01011), 0, 'lsb (1)';
is-deeply lsb(0b01000), 3, 'lsb (2)';
is-deeply msb(0b01011), 3, 'msb (1)';
is-deeply msb(0b00010), 1, 'msb (2)';
is-deeply lsb(0), Nil, 'lsb 0';
is-deeply msb(0), Nil, 'msb 0';
}
ok Int ~~ UInt, "accept undefined Int";
# https://github.com/rakudo/rakudo/issues/2157
subtest 'no funny business with Ints that are not representable in double' => {
plan 3*4;
is-deeply $_+1, 9930972392403502
for 9930972392403501, 0x23482ab1b9322d, 0o432202526156231055,
0b100011010010000010101010110001101110010011001000101101;
is-deeply $_+1, 9930972392403504
for 9930972392403503, 0x23482ab1b9322f, 0o432202526156231057,
0b100011010010000010101010110001101110010011001000101111;
is-deeply $_+1, 9007199254740994
for 9007199254740993, 0x20000000000001, 0o400000000000000001,
0b100000000000000000000000000000000000000000000000000001;
}
# vim: ft=perl6