mirror of
https://github.com/danog/psalm.git
synced 2024-11-30 04:39:00 +01:00
819 lines
27 KiB
PHP
819 lines
27 KiB
PHP
<?php
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namespace Psalm\Tests;
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class RedundantConditionTest extends TestCase
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{
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use Traits\ValidCodeAnalysisTestTrait;
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use Traits\InvalidCodeAnalysisTestTrait;
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/**
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* @return array
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*/
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public function providerValidCodeParse()
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{
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return [
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'ignoreIssueAndAssign' => [
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'<?php
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function foo(): stdClass {
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return new stdClass;
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}
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$b = null;
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foreach ([0, 1] as $i) {
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$a = foo();
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if (!empty($a)) {
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$b = $a;
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}
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}',
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'assertions' => [
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'$b' => 'null|stdClass',
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],
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'error_levels' => ['RedundantCondition'],
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],
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'byrefNoRedundantCondition' => [
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'<?php
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/**
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* @param int $min ref
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* @param int $other
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*/
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function testmin(&$min, int $other): void {
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if (is_null($min)) {
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$min = 3;
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} elseif (!is_int($min)) {
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$min = 5;
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} elseif ($min < $other) {
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$min = $other;
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}
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}',
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'assertions' => [],
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'error_levels' => [
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'RedundantConditionGivenDocblockType',
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'DocblockTypeContradiction',
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],
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],
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'assignmentInIf' => [
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'<?php
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function test(int $x = null): int {
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if (!$x && !($x = rand(0, 10))) {
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echo "Failed to get non-empty x\n";
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return -1;
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}
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return $x;
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}',
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],
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'noRedundantConditionAfterAssignment' => [
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'<?php
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/** @param int $i */
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function foo($i): void {
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if ($i !== null) {
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$i = (int) $i;
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if ($i) {}
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}
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}',
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'assertions' => [],
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'error_levels' => [
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'RedundantConditionGivenDocblockType',
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],
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],
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'noRedundantConditionAfterDocblockTypeNullCheck' => [
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'<?php
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class A {
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/** @var ?int */
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public $foo;
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}
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class B {}
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/**
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* @param A|B $i
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*/
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function foo($i): void {
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if (empty($i)) {
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return;
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}
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switch (get_class($i)) {
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case A::class:
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if ($i->foo) {}
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break;
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default:
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break;
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}
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}',
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'assertions' => [],
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'error_levels' => ['DocblockTypeContradiction'],
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],
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'noRedundantConditionTypeReplacementWithDocblock' => [
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'<?php
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class A {}
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/**
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* @return A
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*/
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function getA() {
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return new A();
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}
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$maybe_a = rand(0, 1) ? new A : null;
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if ($maybe_a === null) {
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$maybe_a = getA();
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}
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if ($maybe_a === null) {}',
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'assertions' => [],
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'error_levels' => [
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'DocblockTypeContradiction',
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],
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],
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'noRedundantConditionAfterPossiblyNullCheck' => [
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'<?php
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if (rand(0, 1)) {
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$a = "hello";
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}
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if ($a) {}',
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'assertions' => [],
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'error_levels' => ['PossiblyUndefinedGlobalVariable'],
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],
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'noRedundantConditionAfterFromDocblockRemoval' => [
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'<?php
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class A {
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public function foo(): bool {
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return (bool) rand(0, 1);
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}
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public function bar(): bool {
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return (bool) rand(0, 1);
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}
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}
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/** @return A */
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function makeA() {
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return new A;
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}
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$a = makeA();
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if ($a === null) {
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exit;
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}
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if ($a->foo() || $a->bar()) {}',
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'assertions' => [],
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'error_levels' => [
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'DocblockTypeContradiction',
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],
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],
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'noEmptyUndefinedArrayVar' => [
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'<?php
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if (rand(0,1)) {
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/** @psalm-suppress UndefinedGlobalVariable */
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$a = $b[0];
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} else {
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$a = null;
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}
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if ($a) {}',
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'assertions' => [],
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'error_levels' => ['MixedAssignment', 'MixedArrayAccess'],
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],
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'noComplaintWithIsNumericThenIsEmpty' => [
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'<?php
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function takesString(string $s): void {
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if (!is_numeric($s) || empty($s)) {}
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}',
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],
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'noRedundantConditionOnTryCatchVars' => [
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'<?php
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function trycatch(): void {
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$value = null;
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try {
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if (rand() % 2 > 0) {
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throw new RuntimeException("Failed");
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}
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$value = new stdClass();
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if (rand() % 2 > 0) {
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throw new RuntimeException("Failed");
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}
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} catch (Exception $e) {
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if ($value) {
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var_export($value);
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}
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}
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if ($value) {}
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}',
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],
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'noRedundantConditionInFalseCheck' => [
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'<?php
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$ch = curl_init();
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if (!$ch) {}',
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],
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'noRedundantConditionInForCheck' => [
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'<?php
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class Node
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{
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/** @var Node|null */
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public $next;
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public function iterate(): void
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{
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for ($node = $this; $node !== null; $node = $node->next) {}
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}
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}',
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],
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'noRedundantConditionComparingBool' => [
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'<?php
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function getBool(): bool {
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return (bool)rand(0, 1);
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}
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function takesBool(bool $b): void {
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if ($b === getBool()) {}
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}',
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],
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'evaluateElseifProperly' => [
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'<?php
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/** @param string $str */
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function foo($str): int {
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if (is_null($str)) {
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return 1;
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} else if (strlen($str) < 1) {
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return 2;
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}
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return 2;
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}',
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'assertions' => [],
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'error_levels' => [
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'DocblockTypeContradiction',
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'RedundantConditionGivenDocblockType',
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],
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],
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'evaluateArrayCheck' => [
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'<?php
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function array_check(): void {
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$data = ["f" => false];
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while (rand(0, 1) > 0 && !$data["f"]) {
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$data = ["f" => true];
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}
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}',
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],
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'mixedArrayAssignment' => [
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'<?php
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/** @param mixed $arr */
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function foo($arr): void {
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if ($arr["a"] === false) {
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$arr["a"] = (bool) rand(0, 1);
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if ($arr["a"] === false) {}
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}
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}',
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'assertions' => [],
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'error_levels' => ['MixedAssignment', 'MixedArrayAccess'],
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],
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'hardPhpTypeAssertionsOnDocblockType' => [
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'<?php
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/** @param string|null $bar */
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function foo($bar): void {
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if (!is_null($bar) && !is_string($bar)) {
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throw new \Exception("bad");
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}
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if ($bar !== null) {}
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType'],
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],
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'isObjectAssertionOnDocblockType' => [
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'<?php
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class A {}
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class B {}
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/** @param A|B $a */
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function foo($a) : void {
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if (!is_object($a)) {
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return;
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}
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if ($a instanceof A) {
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} elseif ($a instanceof B) {
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} else {
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throw new \Exception("bad");
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}
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType', 'DocblockTypeContradiction'],
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],
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'nullToMixedWithNullCheckNoContinue' => [
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'<?php
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function getStrings(): array {
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return ["hello", "world", 50];
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}
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$a = getStrings();
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if (is_string($a[0]) && strlen($a[0]) > 3) {}',
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'assignments' => [],
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'error_levels' => [],
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],
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'replaceFalseTypeWithTrueConditionalOnMixedEquality' => [
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'<?php
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function getData() {
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return rand(0, 1) ? [1, 2, 3] : false;
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}
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$a = false;
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while ($i = getData()) {
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if (!$a && $i[0] === 2) {
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$a = true;
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}
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if ($a === false) {}
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}',
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'assignments' => [],
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'error_levels' => ['MixedAssignment', 'MissingReturnType', 'MixedArrayAccess'],
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],
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'nullCoalescePossiblyUndefined' => [
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'<?php
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if (rand(0,1)) {
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$options = ["option" => true];
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}
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$option = $options["option"] ?? false;
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if ($option) {}',
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'assignments' => [],
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'error_levels' => ['MixedAssignment', 'MixedArrayAccess'],
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],
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'allowIntValueCheckAfterComparisonDueToOverflow' => [
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'<?php
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function foo(int $x) : void {
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$x = $x + 1;
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if (!is_int($x)) {
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echo "Is a float.";
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} else {
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echo "Is an int.";
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}
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}
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function bar(int $x) : void {
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$x = $x + 1;
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if (is_float($x)) {
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echo "Is a float.";
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} else {
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echo "Is an int.";
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}
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}',
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],
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'allowIntValueCheckAfterComparisonDueToOverflowInc' => [
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'<?php
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function foo(int $x) : void {
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$x++;
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if (!is_int($x)) {
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echo "Is a float.";
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} else {
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echo "Is an int.";
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}
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}
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function bar(int $x) : void {
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$x++;
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if (is_float($x)) {
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echo "Is a float.";
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} else {
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echo "Is an int.";
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}
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}',
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],
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'allowIntValueCheckAfterComparisonDueToConditionalOverflow' => [
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'<?php
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function foo(int $x) : void {
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if (rand(0, 1)) {
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$x = $x + 1;
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}
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if (is_float($x)) {
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echo "Is a float.";
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} else {
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echo "Is an int.";
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}
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}',
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],
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'changeStringValue' => [
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'<?php
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$concat = "";
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foreach (["x", "y"] as $v) {
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if ($concat != "") {
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$concat .= ", ";
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}
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$concat .= "($v)";
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}',
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],
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'arrayCanBeEmpty' => [
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'<?php
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$x = ["key" => "value"];
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if (rand(0, 1)) {
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$x = [];
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}
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if ($x) {
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var_export($x);
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}',
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],
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'arrayKeyExistsAccess' => [
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'<?php
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/** @param array<int, string> $arr */
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function foo(array $arr) : void {
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if (array_key_exists(1, $arr)) {
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$a = ($arr[1] === "b") ? true : false;
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}
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}',
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],
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'noRedundantConditionStringNotFalse' => [
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'<?php
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function foo(string $s) : void {
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if ($s != false ) {}
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}',
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],
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'noRedundantConditionStringNotTrue' => [
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'<?php
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function foo(string $s) : void {
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if ($s != true ) {}
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}',
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],
|
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'noRedundantConditionBoolNotFalse' => [
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'<?php
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function foo(bool $s) : void {
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if ($s !== false ) {}
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}',
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],
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'noRedundantConditionBoolNotTrue' => [
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'<?php
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function foo(bool $s) : void {
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if ($s !== true ) {}
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}',
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],
|
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'noRedundantConditionNullableBoolIsFalseOrTrue' => [
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'<?php
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function foo(?bool $s) : void {
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if ($s === false ) {} elseif ($s === true) {}
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}',
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],
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'noRedundantConditionNullableBoolIsTrueOrFalse' => [
|
|
'<?php
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function foo(?bool $s) : void {
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if ($s === true ) {} elseif ($s === false) {}
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}',
|
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],
|
|
'noRedundantConditionAfterCheckingMixedTwice' => [
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|
'<?php
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function foo($a) : void {
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$b = $a ? 1 : 0;
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$c = $a ? 1 : 0;
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}',
|
|
[],
|
|
'error_levels' => ['MissingParamType'],
|
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],
|
|
'notAlwaysTrueBinaryOp' => [
|
|
'<?php
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function foo ($a) : void {
|
|
if (!$a) {}
|
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$b = $a && rand(0, 1);
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}',
|
|
[],
|
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'error_levels' => ['MissingParamType']
|
|
],
|
|
'noRedundantConditionAfterAssertingValue' => [
|
|
'<?php
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function foo(string $t, bool $b) : void {
|
|
if (!$b && $t === "a") {
|
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return;
|
|
}
|
|
|
|
if ($t === "c") {
|
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if (!$b && bar($t)) {}
|
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}
|
|
}
|
|
|
|
function bar(string $b) : bool {
|
|
return true;
|
|
}',
|
|
],
|
|
'noRedundantConditionBleed' => [
|
|
'<?php
|
|
$foo = getopt("i");
|
|
$i = $foo["i"];
|
|
|
|
/** @psalm-suppress TypeDoesNotContainNull */
|
|
if ($i === null) {
|
|
exit;
|
|
}
|
|
|
|
if ($i) {}',
|
|
],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
public function providerInvalidCodeParse()
|
|
{
|
|
return [
|
|
'ifFalse' => [
|
|
'<?php
|
|
$y = false;
|
|
if ($y) {}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'ifNotTrue' => [
|
|
'<?php
|
|
$y = true;
|
|
if (!$y) {}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'ifTrue' => [
|
|
'<?php
|
|
$y = true;
|
|
if ($y) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'unnecessaryInstanceof' => [
|
|
'<?php
|
|
class One {
|
|
public function fooFoo() : void {}
|
|
}
|
|
|
|
$var = new One();
|
|
|
|
if ($var instanceof One) {
|
|
$var->fooFoo();
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'failedTypeResolution' => [
|
|
'<?php
|
|
class A { }
|
|
|
|
/**
|
|
* @return void
|
|
*/
|
|
function fooFoo(A $a) {
|
|
if ($a instanceof A) {
|
|
}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'failedTypeResolutionWithDocblock' => [
|
|
'<?php
|
|
class A { }
|
|
|
|
/**
|
|
* @param A $a
|
|
* @return void
|
|
*/
|
|
function fooFoo(A $a) {
|
|
if ($a instanceof A) {
|
|
}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'typeResolutionFromDocblockAndInstanceof' => [
|
|
'<?php
|
|
class A { }
|
|
|
|
/**
|
|
* @param A $a
|
|
* @return void
|
|
* @psalm-suppress RedundantConditionGivenDocblockType
|
|
*/
|
|
function fooFoo($a) {
|
|
if ($a instanceof A) {
|
|
if ($a instanceof A) {
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'typeResolutionRepeatingConditionWithSingleVar' => [
|
|
'<?php
|
|
$a = rand(0, 10) > 5;
|
|
if ($a && $a) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'typeResolutionRepeatingConditionWithVarInMiddle' => [
|
|
'<?php
|
|
$a = rand(0, 10) > 5;
|
|
$b = rand(0, 10) > 5;
|
|
if ($a && $b && $a) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'typeResolutionRepeatingOredConditionWithSingleVar' => [
|
|
'<?php
|
|
$a = rand(0, 10) > 5;
|
|
if ($a || $a) {}',
|
|
'error_message' => 'ParadoxicalCondition',
|
|
],
|
|
'typeResolutionRepeatingOredConditionWithVarInMiddle' => [
|
|
'<?php
|
|
$a = rand(0, 10) > 5;
|
|
$b = rand(0, 10) > 5;
|
|
if ($a || $b || $a) {}',
|
|
'error_message' => 'ParadoxicalCondition',
|
|
],
|
|
'typeResolutionIsIntAndIsNumeric' => [
|
|
'<?php
|
|
$c = rand(0, 10) > 5 ? "hello" : 3;
|
|
if (is_int($c) && is_numeric($c)) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'typeResolutionWithInstanceOfAndNotEmpty' => [
|
|
'<?php
|
|
$x = rand(0, 10) > 5 ? new stdClass : null;
|
|
if ($x instanceof stdClass && $x) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'methodWithMeaninglessCheck' => [
|
|
'<?php
|
|
class One {
|
|
/** @return void */
|
|
public function fooFoo() {}
|
|
}
|
|
|
|
class B {
|
|
/** @return void */
|
|
public function barBar(One $one) {
|
|
if (!$one) {
|
|
// do nothing
|
|
}
|
|
|
|
$one->fooFoo();
|
|
}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'twoVarLogicNotNestedWithElseifNegatedInIf' => [
|
|
'<?php
|
|
function foo(?string $a, ?string $b): ?string {
|
|
if ($a) {
|
|
$a = null;
|
|
} elseif ($b) {
|
|
// do nothing here
|
|
} else {
|
|
return "bad";
|
|
}
|
|
|
|
if (!$a) return $b;
|
|
return $a;
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'refineTypeInMethodCall' => [
|
|
'<?php
|
|
class A {}
|
|
|
|
/** @return ?A */
|
|
function getA() {
|
|
return rand(0, 1) ? new A : null;
|
|
}
|
|
|
|
function takesA(A $a): void {}
|
|
|
|
$a = getA();
|
|
if ($a instanceof A) {}
|
|
/** @psalm-suppress PossiblyNullArgument */
|
|
takesA($a);
|
|
if ($a instanceof A) {}',
|
|
'error_message' => 'RedundantCondition - src' . DIRECTORY_SEPARATOR . 'somefile.php:15',
|
|
],
|
|
'replaceFalseType' => [
|
|
'<?php
|
|
function foo(bool $b) : void {
|
|
if (!$b) {
|
|
$b = true;
|
|
}
|
|
|
|
if ($b) {}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'replaceTrueType' => [
|
|
'<?php
|
|
function foo(bool $b) : void {
|
|
if ($b) {
|
|
$b = false;
|
|
}
|
|
|
|
if ($b) {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType - src' . DIRECTORY_SEPARATOR . 'somefile.php:7',
|
|
],
|
|
'disallowFloatCheckAfterSettingToVar' => [
|
|
'<?php
|
|
function foo(int $x) : void {
|
|
if (rand(0, 1)) {
|
|
$x = 125;
|
|
}
|
|
|
|
if (is_float($x)) {
|
|
echo "Is a float.";
|
|
} else {
|
|
echo "Is an int.";
|
|
}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType - src' . DIRECTORY_SEPARATOR . 'somefile.php:7',
|
|
],
|
|
'disallowTwoIntValueChecksDueToConditionalOverflow' => [
|
|
'<?php
|
|
function foo(int $x) : void {
|
|
$x = $x + 1;
|
|
|
|
if (is_int($x)) {
|
|
} elseif (is_int($x)) {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType - src' . DIRECTORY_SEPARATOR . 'somefile.php:6',
|
|
],
|
|
'redundantEmptyArray' => [
|
|
'<?php
|
|
$x = ["key" => "value"];
|
|
if ($x) {
|
|
var_export($x);
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'redundantConditionStringNotFalse' => [
|
|
'<?php
|
|
function foo(string $s) : void {
|
|
if ($s !== false ) {}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'redundantConditionStringNotTrue' => [
|
|
'<?php
|
|
function foo(string $s) : void {
|
|
if ($s !== true ) {}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'redundantConditionAfterRemovingFalse' => [
|
|
'<?php
|
|
$s = rand(0, 1) ? rand(0, 5) : false;
|
|
|
|
if ($s !== false) {
|
|
if (is_int($s)) {}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'redundantConditionAfterRemovingTrue' => [
|
|
'<?php
|
|
$s = rand(0, 1) ? rand(0, 5) : true;
|
|
|
|
if ($s !== true) {
|
|
if (is_int($s)) {}
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'impossibleNullEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i !== null;',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'impossibleTrueEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i !== true;',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'impossibleFalseEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i !== false;',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'impossibleNumberEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i !== 3;',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'alwaysTrueBinaryOp' => [
|
|
'<?php
|
|
function foo ($a) : void {
|
|
if (!$a) return;
|
|
$b = $a && rand(0, 1);
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
'error_levels' => ['MissingParamType']
|
|
],
|
|
];
|
|
}
|
|
}
|