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c3c/test/unit/stdlib/core/builtintests.c3

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module std::core::builtins @test;
fn void test_anycast()
{
int a;
any b = &a;
assert(anycast(b, int)!! == &a);
assert(@catch(anycast(b, double)) == TYPE_MISMATCH);
}
fn void test_bitcast()
{
int a = 123;
float z = bitcast(a, float);
assert(bitcast(z, int) == a);
}
enum Tester
{
ABC,
DEF,
}
fn void test_enum_by_name()
{
assert(enum_by_name(Tester, "ABC")!! == Tester.ABC);
assert(enum_by_name(Tester, "DEF")!! == Tester.DEF);
assert(@catch(enum_by_name(Tester, "GHI")) == NOT_FOUND);
}
faultdef SOME_FAULT, ABC_FAULT;
fn void test_try_catch()
{
int val;
int? x = ABC_FAULT~;
assert(@try_catch(val, x, ABC_FAULT)!!);
assert(val == 0);
assert(!@catch(@try_catch(val, x, ABC_FAULT)));
x = SOME_FAULT~;
assert(@catch(@try_catch(val, x, ABC_FAULT)) == SOME_FAULT);
x = 3;
assert(!@try_catch(val, x, ABC_FAULT)!!);
assert(val == 3);
}
fn void test_try_set()
{
assert(enum_by_name(Tester, "ABC")!! == Tester.ABC);
Tester val;
if (catch @try(val, enum_by_name(Tester, "ABC"))) abort("Test failure");
assert(val == Tester.ABC);
Tester another;
if (catch err = @try(another, enum_by_name(Tester, "GHI")))
{
assert(err == NOT_FOUND);
return;
}
abort("Test failure");
}
fn void test_likely()
{
int a = 2;
int b = 43;
if (@likely(a > b, 0.5)) a++;
if (@likely(a < b)) b++;
}
fn void test_unlikely()
{
int a = 2;
int b = 43;
if (@unlikely(a > b, 0.5)) a++;
if (@unlikely(a < b)) b++;
}
fn void test_expect()
{
int a = 2;
int b = 43;
int c = @expect(a, 2, 0.5);
int d = @expect(b, 2);
}
int abc;
fn void test_prefetch()
{
@prefetch(&abc);
}
fn void test_hash()
{
(char){}.hash();
(char[<100>]){}.hash();
(char[100]){}.hash();
(ichar){}.hash();
(ichar[<100>]){}.hash();
(ichar[100]){}.hash();
(short){}.hash();
(short[<100>]){}.hash();
(short[100]){}.hash();
(ushort){}.hash();
(ushort[<100>]){}.hash();
(ushort[100]){}.hash();
(int){}.hash();
(int[<100>]){}.hash();
(int[100]){}.hash();
(uint){}.hash();
(uint[<100>]){}.hash();
(uint[100]){}.hash();
(long){}.hash();
(long[<20>]){}.hash();
(long[100]){}.hash();
(ulong){}.hash();
(ulong[<20>]){}.hash();
(ulong[100]){}.hash();
(int128){}.hash();
(int128[<20>]){}.hash();
(int128[100]){}.hash();
(uint128){}.hash();
(uint128[<20>]){}.hash();
(uint128[100]){}.hash();
(bool){}.hash();
(bool[<100>]){}.hash();
(bool[100]){}.hash();
String x = "abc";
char[] y = "abc";
assert(x.hash() == y.hash());
assert(int.typeid.hash());
}
fn void test_hash_repeat()
{
assert((char){}.hash() == (char){}.hash());
assert((char[<100>]){}.hash() == (char[<100>]){}.hash());
assert((char[100]){}.hash() == (char[100]){}.hash());
assert((ichar){}.hash() == (ichar){}.hash());
assert((ichar[<100>]){}.hash() == (ichar[<100>]){}.hash());
assert((ichar[100]){}.hash() == (ichar[100]){}.hash());
assert((short){}.hash() == (short){}.hash());
assert((short[<100>]){}.hash() == (short[<100>]){}.hash());
assert((short[100]){}.hash() == (short[100]){}.hash());
assert((ushort){}.hash() == (ushort){}.hash());
assert((ushort[<100>]){}.hash() == (ushort[<100>]){}.hash());
assert((ushort[100]){}.hash() == (ushort[100]){}.hash());
assert((int){}.hash() == (int){}.hash());
assert((int[<100>]){}.hash() == (int[<100>]){}.hash());
assert((int[100]){}.hash() == (int[100]){}.hash());
assert((uint){}.hash() == (uint){}.hash());
assert((uint[<100>]){}.hash() == (uint[<100>]){}.hash());
assert((uint[100]){}.hash() == (uint[100]){}.hash());
assert((long){}.hash() == (long){}.hash());
assert((long[<20>]){}.hash() == (long[<20>]){}.hash());
assert((long[100]){}.hash() == (long[100]){}.hash());
assert((ulong){}.hash() == (ulong){}.hash());
assert((ulong[<20>]){}.hash() == (ulong[<20>]){}.hash());
assert((ulong[100]){}.hash() == (ulong[100]){}.hash());
assert((int128){}.hash() == (int128){}.hash());
assert((int128[<20>]){}.hash() == (int128[<20>]){}.hash());
assert((int128[100]){}.hash() == (int128[100]){}.hash());
assert((uint128){}.hash() == (uint128){}.hash());
assert((uint128[<20>]){}.hash() == (uint128[<20>]){}.hash());
assert((uint128[100]){}.hash() == (uint128[100]){}.hash());
assert((bool){}.hash() == (bool){}.hash());
assert((bool[<100>]){}.hash() == (bool[<100>]){}.hash());
assert((bool[100]){}.hash() == (bool[100]){}.hash());
assert(int.typeid.hash() == int.typeid.hash());
}
macro test_hash_vector_macro(...)
{
int[] $lens = {1, 2, 4, 7, 8, 13, 16, 23, 32, 43, 64, 103};
$for var $i = 0; $i < $vacount ; $i++:
{
$foreach $vec_len : $lens:
{
$if $vec_len * $vatype[$i].sizeof * 8 <= $$MAX_VECTOR_SIZE:
{
$vatype[$i][<$vec_len>] vec1, vec2;
for (int val = 0; val < $vec_len; val++)
{
$vatype[$i] tval = ($vatype[$i])val;
vec1[val] = (tval | (tval << (($vatype[$i].sizeof - 1) * 8)));
}
vec2 = vec1;
assert(vec1.hash() == vec2.hash(), "hashes don't match for %s and %s", vec1, vec2);
for (int val = 0; val < $vec_len; val++)
{
vec2[val] ^= (($vatype[$i])0b0010_0000 << (($vatype[$i].sizeof - 1) * 8));
assert(vec1.hash() != vec2.hash(), "hashes match for %s and %s", vec1, vec2);
vec2[val] ^= (($vatype[$i])0b0010_0000 << (($vatype[$i].sizeof - 1) * 8));
}
}
$endif
}
$endforeach
}
$endfor
}
macro test_hash_vector_macro_bool()
{
int[] $lens = {1, 2, 4, 7, 8, 13, 16, 23, 32, 43, 64, 103};
$foreach $vec_len : $lens:
{
bool[<$vec_len>] vec1, vec2;
for (int val = 0; val < $vec_len; val++)
{
vec1[val] = ((val & 0x3) == 0);
}
vec2 = vec1;
assert(vec1.hash() == vec2.hash(), "hashes don't match for %s and %s", vec1, vec2);
for (int val = 0; val < $vec_len; val++)
{
vec2[val] = !vec2[val];
assert(vec1.hash() != vec2.hash(), "hashes match for %s and %s", vec1, vec2);
vec2[val] = !vec2[val];
}
}
$endforeach
}
fn void test_hash_vector() @if($feature(SLOW_TESTS))
{
test_hash_vector_macro(char, ichar, short, ushort, int, uint, long, ulong, int128, uint128);
test_hash_vector_macro_bool();
}
fn void test_builtin_string_hashing() => @pool()
{
var $x = "";
ulong l;
$for var $i = 0; $i < 65; ++$i: // 65 is a good length to reliably test all branches w/o being excessive
l = string::tformat("%s%s", $x, $i).hash();
var $r = $$str_hash(@sprintf("%s%s", $x, $i));
assert((uint)l == (uint)$r, "Builtin $$str_hash mismatch against String.hash()");
$x = $x +++ "a";
$endfor
}
fn void test_ct_clz()
{
assert(@clz((ulong)0) == ulong.sizeof * 8);
assert(@clz((char)1) == (char.sizeof * 8) - 1);
assert(@clz((uint)0x8000_0000) == 0);
assert(@clz((ushort)0x0100) == 7);
assert(@clz((long)-1) == 0);
assert(@clz((uint128)0x87) == 120);
assert(@clz((char)(0x44 - 0x40)) == 5);
}
fn void test_bitsizeof()
{
assert(bitsizeof(uint128) == 128);
assert(bitsizeof(ulong) == 64);
assert(bitsizeof(int) == 32);
assert(bitsizeof(short) == 16);
assert(bitsizeof(char) == 8);
assert(bitsizeof(char[200]) == 1600);
// Checks that they may be converted
int x = bitsizeof(char);
int y = @bitsizeof(1);
assert(@bitsizeof((char)0x07) == 8);
assert(@bitsizeof(0x1000ul) == 64);
assert(@bitsizeof(0) == 32);
assert(@bitsizeof((char[*])"abcdefghi") == 72);
}
fn void test_ct_min_max()
{
assert(@min(4, 5) == 4);
assert(@max(1.234, 1.2345) == 1.2345);
assert(@min(4, 5, 6, 7, 8.90, 3.14) == 3.14);
assert(@max(0, 0, 1.234, 1.2345, 0.2) == 1.2345);
assert(@max(127.9999999, 45 + 46, bitsizeof(uint128)) == 128);
}
const usz[] MY_OK_VALUES = { 128, 256, 384, 512 };
fn void test_in()
{
$assert @in(384, ...MY_OK_VALUES);
$assert !@in(123, ...MY_OK_VALUES);
$assert @in(384, 128, 256, 384, 512);
$assert @in("love", "joy", "cheer", "love", "friend");
$assert !@in("hate", "joy", "cheer", "love", "friend");
}