mirror of
https://github.com/danog/psalm.git
synced 2024-11-30 04:39:00 +01:00
910 lines
31 KiB
PHP
910 lines
31 KiB
PHP
<?php
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namespace Psalm\Tests\Template;
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use Psalm\Tests\TestCase;
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use Psalm\Tests\Traits\InvalidCodeAnalysisTestTrait;
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use Psalm\Tests\Traits\ValidCodeAnalysisTestTrait;
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class FunctionClassStringTemplateTest extends TestCase
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{
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use InvalidCodeAnalysisTestTrait;
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use ValidCodeAnalysisTestTrait;
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public function providerValidCodeParse(): iterable
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{
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return [
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'callStaticMethodOnTemplatedClassName' => [
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'code' => '<?php
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/**
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* @template T
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* @param class-string<T> $class
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*/
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function foo(string $class, array $args) : void {
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$class::bar($args);
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}',
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'assertions' => [],
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'ignored_issues' => ['MixedMethodCall'],
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],
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'returnTemplatedClassClassName' => [
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'code' => '<?php
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class I {
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/**
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* @template T as Foo
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* @param class-string<T> $class
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* @return T|null
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*/
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public function loader(string $class) {
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return $class::load();
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}
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}
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/**
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* @psalm-consistent-constructor
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*/
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class Foo {
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/** @return static */
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public static function load() {
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return new static();
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}
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}
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class FooChild extends Foo{}
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$a = (new I)->loader(FooChild::class);',
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'assertions' => [
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'$a' => 'FooChild|null',
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],
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],
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'upcastIterableToTraversable' => [
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'code' => '<?php
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/**
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* @template T as iterable
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* @param class-string<T> $class
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*/
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function foo(string $class) : void {
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$a = new $class();
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foreach ($a as $b) {}
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}',
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'assertions' => [],
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'ignored_issues' => ['MixedAssignment'],
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],
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'upcastGenericIterableToGenericTraversable' => [
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'code' => '<?php
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/**
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* @template T as iterable<int>
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* @param T::class $class
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*/
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function foo(string $class) : void {
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$a = new $class();
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foreach ($a as $b) {}
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}',
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'assertions' => [],
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'ignored_issues' => [],
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],
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'understandTemplatedCalculationInOtherFunction' => [
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'code' => '<?php
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/**
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* @template T as Exception
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* @param T::class $type
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* @return T
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* @psalm-suppress UnsafeInstantiation
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*/
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function a(string $type): Exception {
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return new $type;
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}
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/**
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* @template T as InvalidArgumentException
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* @param T::class $type
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* @return T
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*/
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function b(string $type): InvalidArgumentException {
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return a($type);
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}',
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],
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'objectReturn' => [
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'code' => '<?php
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/**
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* @template T as object
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*
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* @param class-string<T> $foo
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*
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* @return T
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*
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* @psalm-suppress MixedMethodCall
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*/
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function Foo(string $foo) : object {
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return new $foo;
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}
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echo Foo(DateTime::class)->format("c");',
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],
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'templatedClassStringParamAsClass' => [
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'code' => '<?php
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/**
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* @psalm-consistent-constructor
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*/
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abstract class C {
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public function foo() : void{}
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}
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class E {
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/**
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* @template T as C
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* @param class-string<T> $c_class
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*
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* @return C
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* @psalm-return T
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*/
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public static function get(string $c_class) : C {
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$c = new $c_class;
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$c->foo();
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return $c;
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}
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}
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/**
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* @param class-string<C> $c_class
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*/
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function bar(string $c_class) : void {
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$c = E::get($c_class);
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$c->foo();
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}
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/**
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* @psalm-suppress ArgumentTypeCoercion
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*/
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function bat(string $c_class) : void {
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$c = E::get($c_class);
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$c->foo();
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}',
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],
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'templatedClassStringParamAsObject' => [
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'code' => '<?php
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/**
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* @psalm-consistent-constructor
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*/
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abstract class C {
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public function foo() : void{}
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}
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class E {
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/**
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* @template T as object
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* @param class-string<T> $c_class
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*
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* @psalm-return T
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* @psalm-suppress MixedMethodCall
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*/
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public static function get(string $c_class) {
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return new $c_class;
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}
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}
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/**
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* @psalm-suppress ArgumentTypeCoercion
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*/
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function bat(string $c_class) : void {
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$c = E::get($c_class);
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$c->bar = "bax";
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}',
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],
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'templatedClassStringParamMoreSpecific' => [
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'code' => '<?php
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/**
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* @psalm-consistent-constructor
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*/
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abstract class C {
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public function foo() : void{}
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}
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class D extends C {
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public function faa() : void{}
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}
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class E {
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/**
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* @template T as C
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* @param class-string<T> $c_class
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*
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* @return C
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* @psalm-return T
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*/
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public static function get(string $c_class) : C {
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$c = new $c_class;
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$c->foo();
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return $c;
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}
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}
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/**
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* @param class-string<D> $d_class
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*/
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function moreSpecific(string $d_class) : void {
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$d = E::get($d_class);
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$d->foo();
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$d->faa();
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}',
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],
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'templateFilterArrayWithIntersection' => [
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'code' => '<?php
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/**
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* @template T as object
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* @template S as object
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* @param array<T> $a
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* @param interface-string<S> $type
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* @return array<T&S>
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*/
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function filter(array $a, string $type): array {
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$result = [];
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foreach ($a as $item) {
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if (is_a($item, $type)) {
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$result[] = $item;
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}
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}
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return $result;
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}
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interface A {}
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interface B {}
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/** @var array<A> */
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$x = [];
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$y = filter($x, B::class);',
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'assertions' => [
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'$y' => 'array<array-key, A&B>',
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],
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],
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'templateFilterWithIntersection' => [
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'code' => '<?php
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/**
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* @template T as object
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* @template S as object
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* @param T $item
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* @param interface-string<S> $type
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* @return T&S
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*/
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function filter($item, string $type) {
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if (is_a($item, $type)) {
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return $item;
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};
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throw new \UnexpectedValueException("bad");
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}
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interface A {}
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interface B {}
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/** @var A */
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$x = null;
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$y = filter($x, B::class);',
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'assertions' => [
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'$y' => 'A&B',
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],
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],
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'unionTOrClassStringTPassedClassString' => [
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'code' => '<?php
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/**
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* @psalm-template T of object
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* @psalm-param T|class-string<T> $someType
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* @psalm-return T
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* @psalm-suppress MixedMethodCall
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*/
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function getObject($someType) {
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if (is_object($someType)) {
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return $someType;
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}
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return new $someType();
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}
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class C {
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function sayHello() : string {
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return "hi";
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}
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}
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getObject(C::class)->sayHello();',
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],
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'unionTOrClassStringTPassedObject' => [
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'code' => '<?php
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/**
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* @psalm-template T of object
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* @psalm-param T|class-string<T> $someType
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* @psalm-return T
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* @psalm-suppress MixedMethodCall
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*/
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function getObject($someType) {
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if (is_object($someType)) {
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return $someType;
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}
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return new $someType();
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}
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class C {
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function sayHello() : string {
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return "hi";
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}
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}
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getObject(new C())->sayHello();',
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],
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'dontModifyByRefTemplatedArray' => [
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'code' => '<?php
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class A {}
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class B {}
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/**
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* @template T of object
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* @param class-string<T> $className
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* @param array<T> $map
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* @param-out array<T> $map
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* @param int $id
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* @return T
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* @psalm-suppress MixedMethodCall
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*/
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function get(string $className, array &$map, int $id) {
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if(!array_key_exists($id, $map)) {
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$map[$id] = new $className();
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}
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return $map[$id];
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}
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/**
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* @param array<A> $mapA
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*/
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function getA(int $id, array $mapA): A {
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return get(A::class, $mapA, $id);
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}
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/**
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* @param array<B> $mapB
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*/
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function getB(int $id, array $mapB): B {
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return get(B::class, $mapB, $id);
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}',
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],
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'unionClassStringTWithTReturnsObjectWhenCoerced' => [
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'code' => '<?php
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/**
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* @template T as object
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* @param T|class-string<T> $s
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* @return T
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* @psalm-suppress MixedMethodCall
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*/
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function bar($s) {
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if (is_object($s)) {
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return $s;
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}
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return new $s();
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}
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function foo(string $s) : object {
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/** @psalm-suppress ArgumentTypeCoercion */
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return bar($s);
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}',
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],
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'allowTemplatedIntersectionFirst' => [
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'code' => '<?php
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class MockObject
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{
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public function checkExpectations() : void
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{
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}
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}
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/**
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* @psalm-template RequestedType
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* @psalm-param class-string<RequestedType> $className
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* @psalm-return RequestedType&MockObject
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* @psalm-suppress MixedInferredReturnType
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* @psalm-suppress MixedReturnStatement
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*/
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function mockHelper(string $className)
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{
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eval(\'"there be dragons"\');
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return $instance;
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}
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class A {
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public function foo() : void {}
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}
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/**
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* @psalm-template UnknownType
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* @psalm-param class-string<UnknownType> $className
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*/
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function useMockTemplated(string $className) : void
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{
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mockHelper($className)->checkExpectations();
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}
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mockHelper(A::class)->foo();',
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],
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'allowTemplatedIntersectionFirstTemplatedMock' => [
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'code' => '<?php
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class MockObject
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{
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public function checkExpectations() : void
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{
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}
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}
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/**
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* @psalm-template RequestedType
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* @psalm-param class-string<RequestedType> $className
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* @psalm-return RequestedType&MockObject
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* @psalm-suppress MixedInferredReturnType
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* @psalm-suppress MixedReturnStatement
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*/
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function mockHelper(string $className)
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{
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eval(\'"there be dragons"\');
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return $instance;
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}
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class A {
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public function foo() : void {}
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}
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/**
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* @psalm-template UnknownType
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* @psalm-param class-string<UnknownType> $className
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*/
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function useMockTemplated(string $className) : void
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{
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mockHelper($className)->checkExpectations();
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}
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mockHelper(A::class)->foo();',
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],
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'allowTemplatedIntersectionSecond' => [
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'code' => '<?php
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class MockObject
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{
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public function checkExpectations() : void
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{
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}
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}
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/**
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* @psalm-template RequestedType
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* @psalm-param class-string<RequestedType> $className
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* @psalm-return MockObject&RequestedType
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* @psalm-suppress MixedInferredReturnType
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* @psalm-suppress MixedReturnStatement
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*/
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function mockHelper(string $className)
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{
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eval(\'"there be dragons"\');
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return $instance;
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}
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class A {
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public function foo() : void {}
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}
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/**
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* @psalm-param class-string $className
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*/
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function useMock(string $className) : void {
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mockHelper($className)->checkExpectations();
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}
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/**
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* @psalm-template UnknownType
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* @psalm-param class-string<UnknownType> $className
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*/
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function useMockTemplated(string $className) : void
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{
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mockHelper($className)->checkExpectations();
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}
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mockHelper(A::class)->foo();',
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],
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'returnClassString' => [
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'code' => '<?php
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/**
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* @template T
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* @param T::class $s
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* @return T::class
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*/
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function foo(string $s) : string {
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return $s;
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}
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/**
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* @param A::class $s
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*/
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function bar(string $s) : void {
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}
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class A {}
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bar(foo(A::class));',
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],
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'templateAsUnionClassStringPassingValidClass' => [
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'code' => '<?php
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/**
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* @psalm-consistent-constructor
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*/
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class A {}
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/**
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* @psalm-consistent-constructor
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*/
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class B {}
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/**
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* @template T1 as A
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* @template T2 as B
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* @param class-string<T1>|class-string<T2> $type
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* @return T1|T2
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*/
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function f(string $type) {
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return new $type();
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}
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f(A::class);
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f(B::class);',
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],
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'compareToExactClassString' => [
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'code' => '<?php
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/**
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* @template T as object
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*/
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class Type
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{
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/** @var class-string<T> */
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private $typeName;
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/**
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* @param class-string<T> $typeName
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*/
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public function __construct(string $typeName) {
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$this->typeName = $typeName;
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}
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/**
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* @param mixed $value
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* @return T
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*/
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public function cast($value) {
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if (is_object($value) && get_class($value) === $this->typeName) {
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return $value;
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}
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throw new RuntimeException();
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}
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}',
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],
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'compareGetClassTypeString' => [
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'code' => '<?php
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/**
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* @template T
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* @param class-string<T> $typeName
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* @param mixed $value
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* @return T
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*/
|
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function cast($value, string $typeName) {
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if (is_object($value) && get_class($value) === $typeName) {
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return $value;
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}
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|
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throw new RuntimeException();
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}',
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],
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|
'instanceofTemplatedClassStringOnMixed' => [
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'code' => '<?php
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interface Foo {}
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/**
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* @template T as Foo
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* @param class-string<T> $fooClass
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* @param mixed $foo
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* @return T
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*/
|
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function get($fooClass, $foo) {
|
|
if ($foo instanceof $fooClass) {
|
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return $foo;
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}
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|
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throw new \Exception();
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}',
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],
|
|
'instanceofTemplatedClassStringOnObjectType' => [
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'code' => '<?php
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interface Foo {}
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|
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/**
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* @template T as Foo
|
|
* @param class-string<T> $fooClass
|
|
* @return T
|
|
*/
|
|
function get($fooClass, Foo $foo) {
|
|
if ($foo instanceof $fooClass) {
|
|
return $foo;
|
|
}
|
|
|
|
throw new \Exception();
|
|
}',
|
|
],
|
|
'templateFromDifferentClassStrings' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @psalm-consistent-constructor
|
|
*/
|
|
class A {}
|
|
|
|
class B extends A {}
|
|
class C extends A {}
|
|
|
|
/**
|
|
* @template T of A
|
|
* @param class-string<T> $a1
|
|
* @param class-string<T> $a2
|
|
* @return T
|
|
*/
|
|
function test(string $a1, string $a2) {
|
|
if (rand(0, 1)) return new $a1();
|
|
|
|
return new $a2();
|
|
}
|
|
|
|
$b_or_c = test(B::class, C::class);',
|
|
'assertions' => [
|
|
'$b_or_c' => 'B|C',
|
|
],
|
|
],
|
|
'allowComparisonWithoutCrash' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @template T as object
|
|
*
|
|
* @param T::class $e
|
|
* @param T::class $expected
|
|
*/
|
|
function bar(string $e, string $expected) : void {
|
|
if ($e !== $expected) {}
|
|
}',
|
|
],
|
|
'refineByArrayFilterIntersection' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @template T
|
|
* @param array<Bar> $bars
|
|
* @psalm-param class-string<T> $class
|
|
* @return array<T&Bar>
|
|
*/
|
|
function getBarsThatAreInstancesOf(array $bars, string $class): array
|
|
{
|
|
return \array_filter(
|
|
$bars,
|
|
function (Bar $bar) use ($class): bool {
|
|
return $bar instanceof $class;
|
|
}
|
|
);
|
|
}
|
|
|
|
interface Bar {}',
|
|
],
|
|
'classStringSatisfiesTemplateWithConstraint' => [
|
|
'code' => '<?php
|
|
/** @template T of string */
|
|
class Foo {}
|
|
|
|
/** @param class-string<Foo> $_fooClass */
|
|
function bar(string $_fooClass): void {}
|
|
|
|
bar(Foo::class);
|
|
',
|
|
],
|
|
'classStringWithGenericChildSatisfiesGenericParentWithDifferentConstraint' => [
|
|
'code' => '<?php
|
|
/** @template T of string */
|
|
class Foo {}
|
|
/**
|
|
* @template T of non-empty-string
|
|
* @extends Foo<T>
|
|
*/
|
|
class Bar extends Foo {}
|
|
|
|
/** @param class-string<Foo> $_fooClass */
|
|
function bar(string $_fooClass): void {}
|
|
|
|
bar(Bar::class);
|
|
',
|
|
],
|
|
'classStringNestedTemplate' => [
|
|
'code' => '<?php
|
|
|
|
/**
|
|
* @template T as MyMapper
|
|
*/
|
|
abstract class MyObject {}
|
|
/**
|
|
* @template T as MyObject
|
|
*/
|
|
abstract class MyMapper {}
|
|
|
|
/**
|
|
* @extends MyObject<AMapper>
|
|
*/
|
|
final class AObject extends MyObject {}
|
|
/**
|
|
* @extends MyMapper<AObject>
|
|
*/
|
|
final class AMapper extends MyMapper {}
|
|
|
|
|
|
/**
|
|
* @extends MyObject<BMapper>
|
|
*/
|
|
final class BObject extends MyObject {}
|
|
/**
|
|
* @extends MyMapper<BObject>
|
|
*/
|
|
final class BMapper extends MyMapper {}
|
|
|
|
|
|
/**
|
|
* Get source, asserting class type
|
|
*
|
|
* @template T as MyObject
|
|
*
|
|
* @param class-string<T> $class
|
|
* @param AObject|BObject $source
|
|
*
|
|
* @return T
|
|
*/
|
|
function getSourceAssertType(string $class, MyObject $source): MyObject {
|
|
if (!$source instanceof $class) {
|
|
throw new RuntimeException("Invalid class!");
|
|
}
|
|
return $source;
|
|
}',
|
|
],
|
|
];
|
|
}
|
|
|
|
public function providerInvalidCodeParse(): iterable
|
|
{
|
|
return [
|
|
'copyScopedClassInFunction' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @template Throwable as DOMNode
|
|
*
|
|
* @param class-string<Throwable> $foo
|
|
*/
|
|
function Foo(string $foo) : string {
|
|
return $foo;
|
|
}',
|
|
'error_message' => 'ReservedWord',
|
|
],
|
|
'copyScopedClassInNamespacedFunction' => [
|
|
'code' => '<?php
|
|
namespace Foo;
|
|
|
|
class Bar {}
|
|
|
|
/**
|
|
* @template Bar as DOMNode
|
|
*
|
|
* @param class-string<Bar> $foo
|
|
*/
|
|
function Foo(string $foo) : string {
|
|
return $foo;
|
|
}',
|
|
'error_message' => 'ReservedWord',
|
|
],
|
|
'constrainTemplateTypeWhenClassStringUsed' => [
|
|
'code' => '<?php
|
|
class GenericObjectFactory {
|
|
/**
|
|
* @psalm-template T
|
|
* @psalm-param class-string<T> $type
|
|
* @psalm-return T
|
|
*/
|
|
public function getObject(string $type)
|
|
{
|
|
return 3;
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'forbidLossOfInformationWhenCoercing' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @template T as iterable<int>
|
|
* @param T::class $class
|
|
*/
|
|
function foo(string $class) : void {}
|
|
|
|
function bar(Traversable $t) : void {
|
|
foo(get_class($t));
|
|
}',
|
|
'error_message' => 'MixedArgumentTypeCoercion',
|
|
],
|
|
'templateAsUnionClassStringPassingInvalidClass' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @psalm-consistent-constructor
|
|
*/
|
|
class A {}
|
|
|
|
/**
|
|
* @psalm-consistent-constructor
|
|
*/
|
|
class B {}
|
|
|
|
class C {}
|
|
|
|
/**
|
|
* @template T1 as A
|
|
* @template T2 as B
|
|
* @param class-string<T1>|class-string<T2> $type
|
|
* @return T1|T2
|
|
*/
|
|
function f(string $type) {
|
|
return new $type();
|
|
}
|
|
|
|
f(C::class);',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'bindToClassString' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @template TClass as object
|
|
*
|
|
* @param class-string<TClass> $className
|
|
* @param TClass $realInstance
|
|
*
|
|
* @return Closure(TClass) : void
|
|
* @psalm-suppress InvalidReturnType
|
|
*/
|
|
function createInitializer(string $className, object $realInstance) : Closure {}
|
|
|
|
function foo(object $realInstance) : void {
|
|
$className = get_class($realInstance);
|
|
/** @psalm-trace $i */
|
|
$i = createInitializer($className, $realInstance);
|
|
}',
|
|
'error_message' => 'Closure(object):void',
|
|
],
|
|
'preventClassStringInPlaceOfTemplatedClassString' => [
|
|
'code' => '<?php
|
|
class ImageFile {}
|
|
class MusicFile {}
|
|
|
|
/**
|
|
* @template T of object
|
|
*/
|
|
interface FileManager {
|
|
/**
|
|
* @param class-string<T> $instance
|
|
* @return T
|
|
*/
|
|
public function create(string $instance) : object;
|
|
}
|
|
|
|
/** @param FileManager<ImageFile> $m */
|
|
function foo(FileManager $m) : void {
|
|
$m->create(MusicFile::class);
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
];
|
|
}
|
|
}
|