mirror of
https://github.com/danog/psalm.git
synced 2024-11-26 20:34:47 +01:00
f15cc7dd5b
* Mark private properties unused when referenced only in constructor If a private property is used only in constructor then most likely it's a dead code since there is no need to have the class property. But such static properties can be accessed between the calls. * Ignore the private property issue on alter * Fix the related dead code psalm * Add a missing condition into the test
612 lines
19 KiB
PHP
612 lines
19 KiB
PHP
<?php
|
|
namespace Psalm\Tests;
|
|
|
|
use Psalm\Config;
|
|
use Psalm\Context;
|
|
use Psalm\Internal\Analyzer\FileAnalyzer;
|
|
use Psalm\Tests\Internal\Provider;
|
|
|
|
class UnusedCodeTest extends TestCase
|
|
{
|
|
/** @var \Psalm\Internal\Analyzer\ProjectAnalyzer */
|
|
protected $project_analyzer;
|
|
|
|
/**
|
|
* @return void
|
|
*/
|
|
public function setUp() : void
|
|
{
|
|
FileAnalyzer::clearCache();
|
|
|
|
$this->file_provider = new Provider\FakeFileProvider();
|
|
|
|
$this->project_analyzer = new \Psalm\Internal\Analyzer\ProjectAnalyzer(
|
|
new TestConfig(),
|
|
new \Psalm\Internal\Provider\Providers(
|
|
$this->file_provider,
|
|
new Provider\FakeParserCacheProvider()
|
|
)
|
|
);
|
|
|
|
$this->project_analyzer->getCodebase()->reportUnusedCode();
|
|
$this->project_analyzer->setPhpVersion('7.3');
|
|
}
|
|
|
|
/**
|
|
* @dataProvider providerValidCodeParse
|
|
*
|
|
* @param string $code
|
|
* @param array<string> $error_levels
|
|
*
|
|
* @return void
|
|
*/
|
|
public function testValidCode($code, array $error_levels = [])
|
|
{
|
|
$test_name = $this->getTestName();
|
|
if (\strpos($test_name, 'SKIPPED-') !== false) {
|
|
$this->markTestSkipped('Skipped due to a bug.');
|
|
}
|
|
|
|
$file_path = self::$src_dir_path . 'somefile.php';
|
|
|
|
$this->addFile(
|
|
$file_path,
|
|
$code
|
|
);
|
|
|
|
foreach ($error_levels as $error_level) {
|
|
$this->project_analyzer->getCodebase()->config->setCustomErrorLevel($error_level, Config::REPORT_SUPPRESS);
|
|
}
|
|
|
|
$context = new Context();
|
|
$context->collect_references = true;
|
|
|
|
$this->analyzeFile($file_path, $context);
|
|
|
|
$this->project_analyzer->checkClassReferences();
|
|
}
|
|
|
|
/**
|
|
* @dataProvider providerInvalidCodeParse
|
|
*
|
|
* @param string $code
|
|
* @param string $error_message
|
|
* @param array<string> $error_levels
|
|
*
|
|
* @return void
|
|
*/
|
|
public function testInvalidCode($code, $error_message, $error_levels = [])
|
|
{
|
|
if (\strpos($this->getTestName(), 'SKIPPED-') !== false) {
|
|
$this->markTestSkipped();
|
|
}
|
|
|
|
$this->expectException(\Psalm\Exception\CodeException::class);
|
|
$this->expectExceptionMessageRegExp('/\b' . \preg_quote($error_message, '/') . '\b/');
|
|
|
|
$file_path = self::$src_dir_path . 'somefile.php';
|
|
|
|
foreach ($error_levels as $error_level) {
|
|
$this->project_analyzer->getCodebase()->config->setCustomErrorLevel($error_level, Config::REPORT_SUPPRESS);
|
|
}
|
|
|
|
$this->addFile(
|
|
$file_path,
|
|
$code
|
|
);
|
|
|
|
$context = new Context();
|
|
$context->collect_references = true;
|
|
|
|
$this->analyzeFile($file_path, $context);
|
|
|
|
$this->project_analyzer->checkClassReferences();
|
|
}
|
|
|
|
/**
|
|
* @return array<string, array{string}>
|
|
*/
|
|
public function providerValidCodeParse()
|
|
{
|
|
return [
|
|
'magicCall' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
private $value = "default";
|
|
|
|
/** @param string[] $args */
|
|
public function __call(string $name, array $args) {
|
|
if (count($args) == 1) {
|
|
$this->modify($name, $args[0]);
|
|
}
|
|
}
|
|
|
|
private function modify(string $name, string $value): void {
|
|
call_user_func([$this, "modify" . $name], $value);
|
|
}
|
|
|
|
public function modifyFoo(string $value): void {
|
|
$this->value = $value;
|
|
}
|
|
|
|
public function getFoo() : string {
|
|
return $this->value;
|
|
}
|
|
}
|
|
|
|
$m = new A();
|
|
$m->foo("value");
|
|
$m->modifyFoo("value2");
|
|
echo $m->getFoo();',
|
|
],
|
|
'usedTraitMethodWithExplicitCall' => [
|
|
'<?php
|
|
class A {
|
|
public function foo(): void {
|
|
echo "parent method";
|
|
}
|
|
}
|
|
|
|
trait T {
|
|
public function foo(): void {
|
|
echo "trait method";
|
|
}
|
|
}
|
|
|
|
class B extends A {
|
|
use T;
|
|
}
|
|
|
|
(new A)->foo();
|
|
(new B)->foo();',
|
|
],
|
|
'usedInterfaceMethod' => [
|
|
'<?php
|
|
interface I {
|
|
public function foo(): void;
|
|
}
|
|
|
|
class A implements I {
|
|
public function foo(): void {}
|
|
}
|
|
|
|
(new A)->foo();',
|
|
],
|
|
'constructorIsUsed' => [
|
|
'<?php
|
|
class A {
|
|
public function __construct() {
|
|
$this->foo();
|
|
}
|
|
private function foo() : void {}
|
|
}
|
|
$a = new A();
|
|
echo (bool) $a;',
|
|
],
|
|
'everythingUsed' => [
|
|
'<?php
|
|
interface I {
|
|
public function foo();
|
|
}
|
|
class B implements I {
|
|
public function foo() : void {}
|
|
}
|
|
|
|
class A
|
|
{
|
|
/**
|
|
* @var I
|
|
*/
|
|
private $i;
|
|
|
|
/**
|
|
* @param int[] $as
|
|
*/
|
|
public function __construct(array $as) {
|
|
$this->i = new B();
|
|
|
|
foreach ($as as $a) {
|
|
$this->a($a, 1);
|
|
}
|
|
}
|
|
|
|
private function a(int $a, int $b): self
|
|
{
|
|
$this->v($a, $b);
|
|
|
|
$this->i->foo();
|
|
|
|
return $this;
|
|
}
|
|
|
|
private function v(int $a, int $b): void
|
|
{
|
|
if ($a + $b > 0) {
|
|
throw new \RuntimeException("");
|
|
}
|
|
}
|
|
}
|
|
|
|
new A([1, 2, 3]);',
|
|
],
|
|
'unusedParamWithUnderscore' => [
|
|
'<?php
|
|
function foo(int $_) : void {}
|
|
|
|
foo(4);',
|
|
],
|
|
'unusedParamWithUnusedPrefix' => [
|
|
'<?php
|
|
function foo(int $unusedArg) : void {}
|
|
|
|
foo(4);',
|
|
],
|
|
'possiblyUnusedParamWithUnderscore' => [
|
|
'<?php
|
|
class A {
|
|
public static function foo(int $_ = null) : void {}
|
|
}
|
|
|
|
A::foo();',
|
|
],
|
|
'possiblyUnusedParamWithUnusedPrefix' => [
|
|
'<?php
|
|
class A {
|
|
public static function foo(int $unusedArg = null) : void {}
|
|
}
|
|
|
|
A::foo();',
|
|
],
|
|
'usedClass' => [
|
|
'<?php
|
|
class A { }
|
|
new A();',
|
|
],
|
|
'usedTraitMethodWithImplicitCall' => [
|
|
'<?php
|
|
class A {
|
|
public function foo() : void {}
|
|
}
|
|
trait T {
|
|
public function foo() : void {}
|
|
}
|
|
class B extends A {
|
|
use T;
|
|
}
|
|
function takesA(A $a) : void {
|
|
$a->foo();
|
|
}
|
|
takesA(new B);',
|
|
],
|
|
'usedMethodInTryCatch' => [
|
|
'<?php
|
|
class A {
|
|
protected function getC() : C {
|
|
return new C;
|
|
}
|
|
}
|
|
class C {
|
|
public function foo() : void {}
|
|
}
|
|
|
|
class B extends A {
|
|
public function bar() : void {
|
|
$c = $this->getC();
|
|
|
|
foreach ([1, 2, 3] as $_) {
|
|
try {
|
|
$c->foo();
|
|
} catch (Exception $e) {}
|
|
}
|
|
}
|
|
}
|
|
|
|
(new B)->bar();',
|
|
],
|
|
'suppressPrivateUnusedMethod' => [
|
|
'<?php
|
|
class A {
|
|
/**
|
|
* @psalm-suppress UnusedMethod
|
|
* @return void
|
|
*/
|
|
private function foo() {}
|
|
}
|
|
|
|
new A();',
|
|
],
|
|
'abstractMethodImplementerCoveredByParentCall' => [
|
|
'<?php
|
|
abstract class Foobar {
|
|
public function doIt(): void {
|
|
$this->inner();
|
|
}
|
|
|
|
abstract protected function inner(): void;
|
|
}
|
|
|
|
class MyFooBar extends Foobar {
|
|
protected function inner(): void {
|
|
// Do nothing
|
|
}
|
|
}
|
|
|
|
$myFooBar = new MyFooBar();
|
|
$myFooBar->doIt();',
|
|
],
|
|
'methodUsedAsCallable' => [
|
|
'<?php
|
|
class C {
|
|
public static function foo() : void {}
|
|
}
|
|
|
|
function takesCallable(callable $c) : void {
|
|
$c();
|
|
}
|
|
|
|
takesCallable([C::class, "foo"]);',
|
|
],
|
|
'propertyAndMethodOverriddenDownstream' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
public $foo = "hello";
|
|
|
|
public function bar() : void {}
|
|
}
|
|
|
|
class B extends A {
|
|
/** @var string */
|
|
public $foo = "goodbye";
|
|
|
|
public function bar() : void {}
|
|
}
|
|
|
|
function foo(A $a) : void {
|
|
echo $a->foo;
|
|
$a->bar();
|
|
}
|
|
|
|
foo(new B());',
|
|
],
|
|
'protectedPropertyOverriddenDownstream' => [
|
|
'<?php
|
|
|
|
class C {
|
|
/** @var int */
|
|
protected $foo = 1;
|
|
public function bar() : int {
|
|
return $this->foo;
|
|
}
|
|
}
|
|
|
|
class D extends C {
|
|
protected $foo = 2;
|
|
}
|
|
|
|
(new D)->bar();',
|
|
],
|
|
'usedClassAfterExtensionLoaded' => [
|
|
'<?php
|
|
class A {
|
|
public function __construct() {}
|
|
}
|
|
|
|
if (extension_loaded("fdsfdsfd")) {
|
|
new A();
|
|
}',
|
|
],
|
|
'usedParamInIf' => [
|
|
'<?php
|
|
class O {}
|
|
class C {
|
|
private bool $a = false;
|
|
public array $_types = [];
|
|
|
|
private static function mirror(array $a) : array {
|
|
return $a;
|
|
}
|
|
|
|
/**
|
|
* @param class-string<O>|null $type
|
|
* @return self
|
|
*/
|
|
public function addType(?string $type, array $ids = array())
|
|
{
|
|
if ($this->a) {
|
|
$ids = self::mirror($ids);
|
|
}
|
|
$this->_types[$type ?: ""] = new ArrayObject($ids);
|
|
return $this;
|
|
}
|
|
}
|
|
|
|
(new C)->addType(null);',
|
|
],
|
|
'usedMethodAfterClassExists' => [
|
|
'<?php
|
|
class A {
|
|
public static function bar() : void {}
|
|
}
|
|
|
|
if (class_exists(A::class)) {
|
|
A::bar();
|
|
}',
|
|
],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @return array<string,array{string,error_message:string}>
|
|
*/
|
|
public function providerInvalidCodeParse()
|
|
{
|
|
return [
|
|
'unusedClass' => [
|
|
'<?php
|
|
class A { }',
|
|
'error_message' => 'UnusedClass',
|
|
],
|
|
'publicUnusedMethod' => [
|
|
'<?php
|
|
class A {
|
|
/** @return void */
|
|
public function foo() {}
|
|
}
|
|
|
|
new A();',
|
|
'error_message' => 'PossiblyUnusedMethod',
|
|
],
|
|
'possiblyUnusedParam' => [
|
|
'<?php
|
|
class A {
|
|
/** @return void */
|
|
public function foo(int $i) {}
|
|
}
|
|
|
|
(new A)->foo(4);',
|
|
'error_message' => 'PossiblyUnusedParam - src' . \DIRECTORY_SEPARATOR
|
|
. 'somefile.php:4:49 - Param #1 is never referenced in this method',
|
|
],
|
|
'unusedParam' => [
|
|
'<?php
|
|
function foo(int $i) {}
|
|
|
|
foo(4);',
|
|
'error_message' => 'UnusedParam',
|
|
],
|
|
'possiblyUnusedProperty' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
public $foo = "hello";
|
|
}
|
|
|
|
$a = new A();',
|
|
'error_message' => 'PossiblyUnusedProperty',
|
|
'error_levels' => ['UnusedVariable'],
|
|
],
|
|
'unusedProperty' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
private $foo = "hello";
|
|
}
|
|
|
|
$a = new A();',
|
|
'error_message' => 'UnusedProperty',
|
|
'error_levels' => ['UnusedVariable'],
|
|
],
|
|
'privateUnusedMethod' => [
|
|
'<?php
|
|
class A {
|
|
/** @return void */
|
|
private function foo() {}
|
|
}
|
|
|
|
new A();',
|
|
'error_message' => 'UnusedMethod',
|
|
],
|
|
'unevaluatedCode' => [
|
|
'<?php
|
|
function foo(): void {
|
|
return;
|
|
$a = "foo";
|
|
}',
|
|
'error_message' => 'UnevaluatedCode',
|
|
],
|
|
'unusedTraitMethodInParent' => [
|
|
'<?php
|
|
class A {
|
|
public function foo() : void {}
|
|
}
|
|
trait T {
|
|
public function foo() : void {}
|
|
|
|
public function bar() : void {}
|
|
}
|
|
class B extends A {
|
|
use T;
|
|
}
|
|
function takesA(A $a) : void {
|
|
$a->foo();
|
|
}
|
|
takesA(new B);',
|
|
'error_message' => 'PossiblyUnusedMethod',
|
|
],
|
|
'unusedRecursivelyUsedMethod' => [
|
|
'<?php
|
|
class C {
|
|
public function foo() : void {
|
|
if (rand(0, 1)) {
|
|
$this->foo();
|
|
}
|
|
}
|
|
|
|
public function bar() : void {}
|
|
}
|
|
|
|
(new C)->bar();',
|
|
'error_message' => 'PossiblyUnusedMethod',
|
|
],
|
|
'unusedRecursivelyUsedStaticMethod' => [
|
|
'<?php
|
|
class C {
|
|
public static function foo() : void {
|
|
if (rand(0, 1)) {
|
|
self::foo();
|
|
}
|
|
}
|
|
|
|
public function bar() : void {}
|
|
}
|
|
|
|
(new C)->bar();',
|
|
'error_message' => 'PossiblyUnusedMethod',
|
|
],
|
|
'propertyOverriddenDownstreamAndNotUsed' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
public $foo = "hello";
|
|
}
|
|
|
|
class B extends A {
|
|
/** @var string */
|
|
public $foo = "goodbye";
|
|
}
|
|
|
|
new B();',
|
|
'error_message' => 'PossiblyUnusedProperty',
|
|
],
|
|
'propertyUsedOnlyInConstructor' => [
|
|
'<?php
|
|
class A {
|
|
/** @var int */
|
|
private $used;
|
|
|
|
/** @var int */
|
|
private $unused;
|
|
|
|
/** @var int */
|
|
private static $staticUnused;
|
|
|
|
public function __construct() {
|
|
$this->used = 4;
|
|
$this->unused = 4;
|
|
self::$staticUnused = 4;
|
|
}
|
|
|
|
public function handle(): void
|
|
{
|
|
$this->used++;
|
|
}
|
|
}
|
|
(new A())->handle();',
|
|
'error_message' => 'UnusedProperty',
|
|
],
|
|
];
|
|
}
|
|
}
|