mirror of
https://github.com/danog/psalm.git
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891 lines
28 KiB
PHP
891 lines
28 KiB
PHP
<?php
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namespace Psalm\Tests;
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use Psalm\Checker\AlgebraChecker;
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use Psalm\Checker\FileChecker;
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use Psalm\Checker\StatementsChecker;
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use Psalm\Checker\TypeChecker;
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use Psalm\Clause;
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use Psalm\Context;
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use Psalm\Type;
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use Psalm\Type\Reconciler;
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class TypeReconciliationTest extends TestCase
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{
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use Traits\FileCheckerInvalidCodeParseTestTrait;
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use Traits\FileCheckerValidCodeParseTestTrait;
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/** @var FileChecker */
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protected $file_checker;
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/** @var StatementsChecker */
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protected $statements_checker;
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/**
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* @return void
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*/
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public function setUp()
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{
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parent::setUp();
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$this->file_checker = new FileChecker($this->project_checker, 'somefile.php', 'somefile.php');
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$this->file_checker->context = new Context();
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$this->statements_checker = new StatementsChecker($this->file_checker);
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}
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/**
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* @dataProvider providerTestReconcilation
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*
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* @param string $expected
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* @param string $type
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* @param string $string
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*
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* @return void
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*/
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public function testReconcilation($expected, $type, $string)
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{
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$reconciled = Reconciler::reconcileTypes(
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$type,
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Type::parseString($string),
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null,
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$this->statements_checker
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);
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$this->assertSame(
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$expected,
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(string) $reconciled
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);
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if (is_array($reconciled->getTypes())) {
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foreach ($reconciled->getTypes() as $type) {
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$this->assertInstanceOf('Psalm\Type\Atomic', $type);
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}
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}
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}
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/**
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* @dataProvider providerTestTypeIsContainedBy
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*
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* @param string $input
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* @param string $container
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*
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* @return void
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*/
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public function testTypeIsContainedBy($input, $container)
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{
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$this->assertTrue(
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TypeChecker::isContainedBy(
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$this->project_checker->codebase,
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Type::parseString($input),
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Type::parseString($container)
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)
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);
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}
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/**
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* @return void
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*/
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public function testNegateFormula()
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{
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$formula = [
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new Clause(['$a' => ['!falsy']]),
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];
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$negated_formula = AlgebraChecker::negateFormula($formula);
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$this->assertSame(1, count($negated_formula));
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$this->assertSame(['$a' => ['falsy']], $negated_formula[0]->possibilities);
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$formula = [
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new Clause(['$a' => ['!falsy'], '$b' => ['!falsy']]),
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];
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$negated_formula = AlgebraChecker::negateFormula($formula);
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$this->assertSame(2, count($negated_formula));
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$this->assertSame(['$a' => ['falsy']], $negated_formula[0]->possibilities);
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$this->assertSame(['$b' => ['falsy']], $negated_formula[1]->possibilities);
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$formula = [
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new Clause(['$a' => ['!falsy']]),
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new Clause(['$b' => ['!falsy']]),
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];
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$negated_formula = AlgebraChecker::negateFormula($formula);
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$this->assertSame(1, count($negated_formula));
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$this->assertSame(['$a' => ['falsy'], '$b' => ['falsy']], $negated_formula[0]->possibilities);
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$formula = [
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new Clause(['$a' => ['int', 'string'], '$b' => ['!falsy']]),
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];
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$negated_formula = AlgebraChecker::negateFormula($formula);
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$this->assertSame(3, count($negated_formula));
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$this->assertSame(['$a' => ['!int']], $negated_formula[0]->possibilities);
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$this->assertSame(['$a' => ['!string']], $negated_formula[1]->possibilities);
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$this->assertSame(['$b' => ['falsy']], $negated_formula[2]->possibilities);
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}
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/**
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* @return void
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*/
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public function testContainsClause()
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{
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$this->assertTrue(
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(new Clause(
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[
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'$a' => ['!falsy'],
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'$b' => ['!falsy'],
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]
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))->contains(
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new Clause(
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[
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'$a' => ['!falsy'],
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]
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)
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)
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);
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$this->assertFalse(
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(new Clause(
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[
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'$a' => ['!falsy'],
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]
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))->contains(
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new Clause(
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[
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'$a' => ['!falsy'],
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'$b' => ['!falsy'],
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]
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)
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)
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);
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}
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/**
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* @return void
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*/
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public function testSimplifyCNF()
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{
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$formula = [
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new Clause(['$a' => ['!falsy']]),
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new Clause(['$a' => ['falsy'], '$b' => ['falsy']]),
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];
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$simplified_formula = AlgebraChecker::simplifyCNF($formula);
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$this->assertSame(2, count($simplified_formula));
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$this->assertSame(['$a' => ['!falsy']], $simplified_formula[0]->possibilities);
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$this->assertSame(['$b' => ['falsy']], $simplified_formula[1]->possibilities);
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}
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/**
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* @return array
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*/
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public function providerTestReconcilation()
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{
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return [
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'notNullWithObject' => ['MyObject', '!null', 'MyObject'],
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'notNullWithObjectPipeNull' => ['MyObject', '!null', 'MyObject|null'],
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'notNullWithMyObjectPipeFalse' => ['MyObject|false', '!null', 'MyObject|false'],
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'notNullWithMixed' => ['mixed', '!null', 'mixed'],
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'notEmptyWithMyObject' => ['MyObject', '!falsy', 'MyObject'],
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'notEmptyWithMyObjectPipeNull' => ['MyObject', '!falsy', 'MyObject|null'],
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'notEmptyWithMyObjectPipeFalse' => ['MyObject', '!falsy', 'MyObject|false'],
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'notEmptyWithMixed' => ['mixed', '!falsy', 'mixed'],
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// @todo in the future this should also work
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//'notEmptyWithMyObjectFalseTrue' => ['MyObject|true', '!falsy', 'MyObject|bool'],
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'nullWithMyObjectPipeNull' => ['null', 'null', 'MyObject|null'],
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'nullWithMixed' => ['null', 'null', 'mixed'],
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'emptyWithMyObject' => ['mixed', 'falsy', 'MyObject'],
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'emptyWithMyObjectPipeFalse' => ['false', 'falsy', 'MyObject|false'],
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'emptyWithMyObjectPipeBool' => ['false', 'falsy', 'MyObject|bool'],
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'emptyWithMixed' => ['mixed', 'falsy', 'mixed'],
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'emptyWithBool' => ['false', 'falsy', 'bool'],
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'notMyObjectWithMyObjectPipeBool' => ['bool', '!MyObject', 'MyObject|bool'],
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'notMyObjectWithMyObjectPipeNull' => ['null', '!MyObject', 'MyObject|null'],
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'notMyObjectWithMyObjectAPipeMyObjectB' => ['MyObjectB', '!MyObjectA', 'MyObjectA|MyObjectB'],
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'myObjectWithMyObjectPipeBool' => ['MyObject', 'MyObject', 'MyObject|bool'],
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'myObjectWithMyObjectAPipeMyObjectB' => ['MyObjectA', 'MyObjectA', 'MyObjectA|MyObjectB'],
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'array' => ['array<mixed, mixed>', 'array', 'array|null'],
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'2dArray' => ['array<mixed, array<mixed, string>>', 'array', 'array<array<string>>|null'],
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'numeric' => ['string', 'numeric', 'string'],
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];
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}
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/**
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* @return array
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*/
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public function providerTestTypeIsContainedBy()
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{
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return [
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'arrayContainsWithArrayOfStrings' => ['array<string>', 'array'],
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'arrayContainsWithArrayOfExceptions' => ['array<Exception>', 'array'],
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'unionContainsWithstring' => ['string', 'string|false'],
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'unionContainsWithFalse' => ['false', 'string|false'],
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];
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}
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/**
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* @return array
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*/
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public function providerFileCheckerValidCodeParse()
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{
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return [
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'intIsMixed' => [
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'<?php
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/** @param mixed $a */
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function foo($a): void {
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$b = 5;
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if ($b === $a) { }
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}',
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],
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'typeResolutionFromDocblock' => [
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'<?php
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class A { }
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/**
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* @param A $a
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* @return void
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*/
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function fooFoo($a) {
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if ($a instanceof A) {
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}
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType'],
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],
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'arrayTypeResolutionFromDocblock' => [
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'<?php
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/**
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* @param string[] $strs
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* @return void
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*/
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function foo(array $strs) {
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foreach ($strs as $str) {
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if (is_string($str)) {}
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}
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType'],
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],
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'typeResolutionFromDocblockInside' => [
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'<?php
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/**
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* @param int $length
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* @return void
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*/
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function foo($length) {
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if (!is_int($length)) {
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if (is_numeric($length)) {
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}
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}
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType'],
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],
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'notInstanceof' => [
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'<?php
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class A { }
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class B extends A { }
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$out = null;
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if ($a instanceof B) {
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// do something
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}
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else {
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$out = $a;
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}',
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'assertions' => [
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'$out' => 'null|A',
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],
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'error_levels' => [],
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'scope_vars' => [
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'$a' => Type::parseString('A'),
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],
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],
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'notInstanceOfProperty' => [
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'<?php
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class B { }
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class C extends B { }
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class A {
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/** @var B */
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public $foo;
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public function __construct() {
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$this->foo = new B();
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}
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}
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$a = new A();
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$out = null;
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if ($a->foo instanceof C) {
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// do something
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}
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else {
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$out = $a->foo;
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}',
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'assertions' => [
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'$out' => 'null|B',
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],
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'error_levels' => [],
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'scope_vars' => [
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'$a' => Type::parseString('A'),
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],
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],
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'notInstanceOfPropertyElseif' => [
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'<?php
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class B { }
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class C extends B { }
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class A {
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/** @var string|B */
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public $foo = "";
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}
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$out = null;
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if (is_string($a->foo)) {
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}
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elseif ($a->foo instanceof C) {
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// do something
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}
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else {
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$out = $a->foo;
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}',
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'assertions' => [
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'$out' => 'null|B',
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],
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'error_levels' => [],
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'scope_vars' => [
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'$a' => Type::parseString('A'),
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],
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],
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'typeArguments' => [
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'<?php
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$a = min(0, 1);
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$b = min([0, 1]);
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$c = min("a", "b");
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$d = min(1, 2, 3, 4);
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$e = min(1, 2, 3, 4, 5);
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sscanf("10:05:03", "%d:%d:%d", $hours, $minutes, $seconds);',
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'assertions' => [
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'$a' => 'int',
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'$b' => 'int',
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'$c' => 'string',
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'$hours' => 'string|int|float',
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'$minutes' => 'string|int|float',
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'$seconds' => 'string|int|float',
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],
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],
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'typeRefinementWithIsNumeric' => [
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'<?php
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/** @return void */
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function fooFoo(string $a) {
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if (is_numeric($a)) { }
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}
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$b = rand(0, 1) ? 5 : false;
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if (is_numeric($b)) { }',
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],
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'typeRefinementWithIsNumericAndIsString' => [
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'<?php
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/**
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* @param mixed $a
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* @return void
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*/
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function foo ($a) {
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if (is_numeric($a)) {
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if (is_string($a)) {
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}
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}
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}',
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],
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'typeRefinementWithIsNumericOnIntOrString' => [
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'<?php
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$a = rand(0, 5) > 4 ? "hello" : 5;
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if (is_numeric($a)) {
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exit;
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}',
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'assertions' => [
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'$a' => 'string',
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],
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],
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'typeRefinementWithStringOrTrue' => [
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'<?php
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$a = rand(0, 5) > 4 ? "hello" : true;
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if (is_bool($a)) {
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exit;
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}',
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'assertions' => [
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'$a' => 'string',
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],
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],
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'updateMultipleIssetVars' => [
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'<?php
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/** @return void **/
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function foo(string $s) {}
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$a = rand(0, 1) ? ["hello"] : null;
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if (isset($a[0])) {
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foo($a[0]);
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}',
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],
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'updateMultipleIssetVarsWithVariableOffset' => [
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'<?php
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/** @return void **/
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function foo(string $s) {}
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$a = rand(0, 1) ? ["hello"] : null;
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$b = 0;
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if (isset($a[$b])) {
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foo($a[$b]);
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}',
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],
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'instanceOfSubtypes' => [
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'<?php
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abstract class A {}
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class B extends A {}
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abstract class C {}
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class D extends C {}
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function makeA(): A {
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return new B();
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}
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function makeC(): C {
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return new D();
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}
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$a = rand(0, 1) ? makeA(): makeC();
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if ($a instanceof B || $a instanceof D) { }',
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],
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'typeReconciliationAfterIfAndReturn' => [
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'<?php
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/**
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* @param string|int $a
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* @return string|int
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*/
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function foo($a) {
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if (is_string($a)) {
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return $a;
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} elseif (is_int($a)) {
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return $a;
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}
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throw new \LogicException("Runtime error");
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType'],
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],
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'ignoreNullCheckAndMaintainNullValue' => [
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'<?php
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$a = null;
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if ($a !== null) { }
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$b = $a;',
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'assertions' => [
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'$b' => 'null',
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],
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'error_levels' => ['RedundantCondition'],
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],
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'ignoreNullCheckAndMaintainNullableValue' => [
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'<?php
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$a = rand(0, 1) ? 5 : null;
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if ($a !== null) { }
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$b = $a;',
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'assertions' => [
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'$b' => 'null|int',
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],
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],
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'ternaryByRefVar' => [
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'<?php
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function foo(): void {
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$b = null;
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$c = rand(0, 1) ? bar($b): null;
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if (is_int($b)) { }
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}
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function bar(?int &$a): void {
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$a = 5;
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}',
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],
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'ternaryByRefVarInConditional' => [
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'<?php
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function foo(): void {
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$b = null;
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if (rand(0, 1) || bar($b)) {
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if (is_int($b)) { }
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}
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}
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function bar(?int &$a): void {
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$a = 5;
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}',
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],
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'possibleInstanceof' => [
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'<?php
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interface I1 {}
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interface I2 {}
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class A
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{
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public function foo(): void {
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if ($this instanceof I1 || $this instanceof I2) {}
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}
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}',
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],
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'intersection' => [
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'<?php
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interface I {
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public function bat(): void;
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}
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function takesI(I $i): void {}
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function takesA(A $a): void {}
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/** @param A&I $a */
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function takesAandI($a): void {}
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/** @param I&A $a */
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function takesIandA($a): void {}
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class A {
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/**
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* @return A&I|null
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*/
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public function foo() {
|
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if ($this instanceof I) {
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$this->bar();
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$this->bat();
|
|
|
|
takesA($this);
|
|
takesI($this);
|
|
takesAandI($this);
|
|
takesIandA($this);
|
|
}
|
|
}
|
|
|
|
protected function bar(): void {}
|
|
}
|
|
|
|
class B extends A implements I {
|
|
public function bat(): void {}
|
|
}',
|
|
],
|
|
'isTruthy' => [
|
|
'<?php
|
|
function f(string $s = null): string {
|
|
if ($s == true) {
|
|
return $s;
|
|
}
|
|
|
|
return "backup";
|
|
}',
|
|
],
|
|
'stringOrCallableArg' => [
|
|
'<?php
|
|
/**
|
|
* @param string|callable $param
|
|
*/
|
|
function f($param): void {}
|
|
f("is_array");',
|
|
],
|
|
'stringOrCallableOrObjectArg' => [
|
|
'<?php
|
|
/**
|
|
* @param string|callable|object $param
|
|
*/
|
|
function f($param): void {}
|
|
f("is_array");',
|
|
],
|
|
'intOrFloatArg' => [
|
|
'<?php
|
|
/**
|
|
* @param int|float $param
|
|
*/
|
|
function f($param): void {}
|
|
f(5.0);
|
|
f(5);',
|
|
],
|
|
'nullReplacement' => [
|
|
'<?php
|
|
/**
|
|
* @param string|null|false $a
|
|
* @return string|false $a
|
|
*/
|
|
function foo($a) {
|
|
if ($a === null) {
|
|
if (rand(0, 4) > 2) {
|
|
$a = "hello";
|
|
} else {
|
|
$a = false;
|
|
}
|
|
}
|
|
|
|
return $a;
|
|
}',
|
|
],
|
|
'nullableIntReplacement' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? 5 : null;
|
|
|
|
$b = (bool)rand(0, 1);
|
|
|
|
if ($b || $a !== null) {
|
|
$a = 3;
|
|
}',
|
|
'assertions' => [
|
|
'$a' => 'int|null',
|
|
],
|
|
],
|
|
'eraseNullAfterInequalityCheck' => [
|
|
'<?php
|
|
$a = mt_rand(0, 1) ? mt_rand(-10, 10): null;
|
|
|
|
if ($a > 0) {
|
|
echo $a + 3;
|
|
}
|
|
|
|
if (0 < $a) {
|
|
echo $a + 3;
|
|
}',
|
|
],
|
|
'twoWrongsDontMakeARight' => [
|
|
'<?php
|
|
if (rand(0, 1)) {
|
|
$a = false;
|
|
} else {
|
|
$a = false;
|
|
}',
|
|
'assertions' => [
|
|
'$a' => 'false',
|
|
],
|
|
],
|
|
'instanceofStatic' => [
|
|
'<?php
|
|
abstract class Foo {
|
|
/**
|
|
* @return static[]
|
|
*/
|
|
abstract public static function getArr() : array;
|
|
|
|
/**
|
|
* @return static|null
|
|
*/
|
|
public static function getOne() {
|
|
$one = current(static::getArr());
|
|
return $one instanceof static ? $one : null;
|
|
}
|
|
}',
|
|
],
|
|
'isaStaticClass' => [
|
|
'<?php
|
|
abstract class Foo {
|
|
/**
|
|
* @return static[]
|
|
*/
|
|
abstract public static function getArr() : array;
|
|
|
|
/**
|
|
* @return static|null
|
|
*/
|
|
public static function getOne() {
|
|
$one = current(static::getArr());
|
|
return is_a($one, static::class, false) ? $one : null;
|
|
}
|
|
}',
|
|
],
|
|
'isAClass' => [
|
|
'<?php
|
|
class A {}
|
|
$a_class = rand(0, 1) ? A::class : "blargle";
|
|
if (is_a($a_class, A::class, true)) {
|
|
echo "cool";
|
|
}',
|
|
],
|
|
'specificArrayFields' => [
|
|
'<?php
|
|
/**
|
|
* @param array{field:string} $array
|
|
*/
|
|
function print_field($array) : void {
|
|
echo $array["field"];
|
|
}
|
|
|
|
/**
|
|
* @param array{field:string,otherField:string} $array
|
|
*/
|
|
function has_mix_of_fields($array) : void {
|
|
print_field($array);
|
|
}',
|
|
],
|
|
'numericOrStringPropertySet' => [
|
|
'<?php
|
|
/**
|
|
* @param string|null $b
|
|
* @psalm-suppress DocblockTypeContradiction
|
|
*/
|
|
function foo($b = null) : void {
|
|
if (is_numeric($b) || is_string($b)) {
|
|
takesNullableString($b);
|
|
}
|
|
}
|
|
|
|
function takesNullableString(?string $s) : void {}',
|
|
],
|
|
'classStringInstantiation' => [
|
|
'<?php
|
|
class Foo {}
|
|
class Bar {}
|
|
$class = mt_rand(0, 1) === 1 ? Foo::class : Bar::class;
|
|
$object = new $class();',
|
|
'assertions' => [
|
|
'$object' => 'Foo|Bar',
|
|
],
|
|
],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
public function providerFileCheckerInvalidCodeParse()
|
|
{
|
|
return [
|
|
'makeNonNullableNull' => [
|
|
'<?php
|
|
class A { }
|
|
$a = new A();
|
|
if ($a === null) {
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainNull',
|
|
],
|
|
'makeInstanceOfThingInElseif' => [
|
|
'<?php
|
|
class A { }
|
|
class B { }
|
|
class C { }
|
|
$a = rand(0, 10) > 5 ? new A(): new B();
|
|
if ($a instanceof A) {
|
|
} elseif ($a instanceof C) {
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'functionValueIsNotType' => [
|
|
'<?php
|
|
if (json_last_error() === "5") { }',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'stringIsNotTnt' => [
|
|
'<?php
|
|
if (5 === "5") { }',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'stringIsNotNull' => [
|
|
'<?php
|
|
if (5 === null) { }',
|
|
'error_message' => 'TypeDoesNotContainNull',
|
|
],
|
|
'stringIsNotFalse' => [
|
|
'<?php
|
|
if (5 === false) { }',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'typeTransformation' => [
|
|
'<?php
|
|
$a = "5";
|
|
|
|
if (is_numeric($a)) {
|
|
if (is_int($a)) {
|
|
echo $a;
|
|
}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'dontEraseNullAfterLessThanCheck' => [
|
|
'<?php
|
|
$a = mt_rand(0, 1) ? mt_rand(-10, 10): null;
|
|
|
|
if ($a < 0) {
|
|
echo $a + 3;
|
|
}',
|
|
'error_message' => 'PossiblyNullOperand',
|
|
],
|
|
'dontEraseNullAfterGreaterThanCheck' => [
|
|
'<?php
|
|
$a = mt_rand(0, 1) ? mt_rand(-10, 10): null;
|
|
|
|
if (0 > $a) {
|
|
echo $a + 3;
|
|
}',
|
|
'error_message' => 'PossiblyNullOperand',
|
|
],
|
|
'nonRedundantConditionGivenDocblockType' => [
|
|
'<?php
|
|
/** @param array[] $arr */
|
|
function foo(array $arr) : void {
|
|
if ($arr === "hello") {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'lessSpecificArrayFields' => [
|
|
'<?php
|
|
/**
|
|
* @param array{field:string, otherField:string} $array
|
|
*/
|
|
function print_field($array) : void {
|
|
echo $array["field"] . " " . $array["otherField"];
|
|
}
|
|
|
|
/**
|
|
* @param array{field:string} $array
|
|
*/
|
|
function has_mix_of_fields($array) : void {
|
|
print_field($array);
|
|
}',
|
|
'error_message' => 'PossiblyInvalidArgument',
|
|
],
|
|
'intersectionIncorrect' => [
|
|
'<?php
|
|
interface I {
|
|
public function bat(): void;
|
|
}
|
|
|
|
interface C {}
|
|
|
|
/** @param I&C $a */
|
|
function takesIandC($a): void {}
|
|
|
|
class A {
|
|
public function foo(): void {
|
|
if ($this instanceof I) {
|
|
takesIandC($this);
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
];
|
|
}
|
|
}
|