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psalm/tests/CloneTest.php

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<?php
declare(strict_types=1);
namespace Psalm\Tests;
class CloneTest extends TestCase
{
use Traits\InvalidCodeAnalysisTestTrait;
use Traits\ValidCodeAnalysisTestTrait;
/**
* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?:string[]}>
*/
public function providerValidCodeParse()
{
return [
'cloneCorrect' => [
'<?php
class A {}
function foo(A $a) : A {
return clone $a;
}
$a = foo(new A());',
],
'cloneCorrectWithPublicMethod' => [
'<?php
class A {
public function __clone() {}
}
function foo(A $a) : A {
return clone $a;
}
foo(new A());',
],
'clonePrivateInternally' => [
'<?php
class A {
private function __clone() {}
public function foo(): self {
return clone $this;
}
}',
],
];
}
/**
* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
*/
public function providerInvalidCodeParse()
{
return [
'invalidIntClone' => [
'<?php
$a = 5;
clone $a;',
'error_message' => 'InvalidClone',
],
'possiblyInvalidIntClone' => [
'<?php
$a = rand(0, 1) ? 5 : new Exception();
clone $a;',
'error_message' => 'PossiblyInvalidClone',
],
'invalidMixedClone' => [
'<?php
/** @var mixed $a */
$a = 5;
clone $a;',
'error_message' => 'MixedClone',
],
'notVisibleCloneMethod' => [
'<?php
class A {
private function __clone() {}
}
$a = new A();
clone $a;',
'error_message' => 'InvalidClone',
],
'invalidGenericClone' => [
'<?php
/**
* @template T as int|string
* @param T $a
*/
function foo($a): void {
clone $a;
}',
'error_message' => 'InvalidClone',
],
'possiblyInvalidGenericClone' => [
'<?php
/**
* @template T as int|Exception
* @param T $a
*/
function foo($a): void {
clone $a;
}',
'error_message' => 'PossiblyInvalidClone',
],
'mixedGenericClone' => [
'<?php
/**
* @template T
* @param T $a
*/
function foo($a): void {
clone $a;
}',
'error_message' => 'MixedClone',
],
'mixedTypeInferredIfErrors' => [
'<?php
class A {}
/**
* @param A|string $a
*/
function foo($a): void {
/**
* @psalm-suppress PossiblyInvalidClone
*/
$cloned = clone $a;
}',
'error_message' => 'MixedAssignment',
]
];
}
}