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75 lines (61 loc) · 1.42 KB
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<?php // lint >= 8.0
declare(strict_types = 1);
namespace Bug8231;
use function PHPStan\Testing\assertType;
function foo(string $x): void {}
function test(string|null $x): void {
if ((string)$x !== '') {
assertType('non-empty-string', $x);
foo($x);
}
}
function testIdentical(string|null $x): void {
if ((string)$x === '') {
assertType("''|null", $x);
} else {
assertType('non-empty-string', $x);
}
}
function testInt(int|null $x): void {
if ((string)$x !== '') {
assertType('int', $x);
}
}
function testIntString(int|string|null $x): void {
if ((string)$x !== '') {
assertType('int|non-empty-string', $x);
}
}
function testBool(bool|string|null $x): void {
if ((string)$x !== '') {
assertType('non-empty-string|true', $x);
}
}
// (int) cast narrowing
function testIntCast(int|null $x): void {
if ((int)$x !== 0) {
assertType('int<min, -1>|int<1, max>', $x);
}
}
function testIntCastIdentical(int|null $x): void {
if ((int)$x === 0) {
assertType('0|null', $x);
} else {
assertType('int<min, -1>|int<1, max>', $x);
}
}
function testIntCastWithString(int|string|null $x): void {
if ((int)$x !== 0) {
assertType("int<min, -1>|int<1, max>|non-falsy-string", $x);
}
}
function testIntCastWithFloat(float|null $x): void {
if ((int)$x !== 0) {
assertType('float', $x);
}
}
function testIntCastWithBool(bool|int|null $x): void {
if ((int)$x !== 0) {
assertType('int<min, -1>|int<1, max>|true', $x);
}
}