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482 lines
15 KiB
PHP
482 lines
15 KiB
PHP
<?php
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namespace Psalm\Tests;
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class LoopScopeTest extends TestCase
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{
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use Traits\FileCheckerInvalidCodeParseTestTrait;
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use Traits\FileCheckerValidCodeParseTestTrait;
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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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'switchVariableWithContinue' => [
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'<?php
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foreach ([\'a\', \'b\', \'c\'] as $letter) {
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switch ($letter) {
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case \'a\':
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$foo = 1;
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break;
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case \'b\':
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$foo = 2;
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break;
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default:
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continue;
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}
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$moo = $foo;
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}',
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],
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'switchVariableWithContinueAndIfs' => [
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'<?php
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foreach ([\'a\', \'b\', \'c\'] as $letter) {
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switch ($letter) {
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case \'a\':
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if (rand(0, 10) === 1) {
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continue;
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}
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$foo = 1;
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break;
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case \'b\':
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if (rand(0, 10) === 1) {
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continue;
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}
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$foo = 2;
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break;
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default:
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continue;
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}
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$moo = $foo;
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}',
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],
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'switchVariableWithFallthrough' => [
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'<?php
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foreach ([\'a\', \'b\', \'c\'] as $letter) {
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switch ($letter) {
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case \'a\':
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case \'b\':
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$foo = 2;
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break;
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default:
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$foo = 3;
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break;
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}
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$moo = $foo;
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}',
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],
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'switchVariableWithFallthroughStatement' => [
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'<?php
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foreach ([\'a\', \'b\', \'c\'] as $letter) {
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switch ($letter) {
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case \'a\':
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$bar = 1;
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case \'b\':
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$foo = 2;
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break;
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default:
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$foo = 3;
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break;
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}
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$moo = $foo;
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}',
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],
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'whileVar' => [
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'<?php
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$worked = false;
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while (rand(0,100) === 10) {
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$worked = true;
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}',
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'assertions' => [
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'$worked' => 'bool',
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],
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],
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'doWhileVar' => [
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'<?php
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$worked = false;
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do {
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$worked = true;
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}
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while (rand(0,100) === 10);',
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'assertions' => [
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'$worked' => 'bool',
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],
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],
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'doWhileVarAndBreak' => [
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'<?php
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/** @return void */
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function foo(string $b) {}
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do {
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if (null === ($a = rand(0, 1) ? "hello" : null)) {
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break;
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}
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foo($a);
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}
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while (rand(0,100) === 10);',
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],
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'objectValue' => [
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'<?php
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class B {}
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class A {
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/** @var A|B */
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public $child;
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public function __construct() {
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$this->child = rand(0, 1) ? new A() : new B();
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}
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}
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function makeA() : A {
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return new A();
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}
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$a = makeA();
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while ($a instanceof A) {
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$a = $a->child;
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}',
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'assertions' => [
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'$a' => 'B',
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],
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],
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'secondLoopWithNotNullCheck' => [
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'<?php
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/** @return void **/
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function takesInt(int $i) {}
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$a = null;
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foreach ([1, 2, 3] as $i) {
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if ($a !== null) takesInt($a);
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$a = $i;
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}',
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],
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'secondLoopWithIntCheck' => [
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'<?php
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/** @return void **/
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function takesInt(int $i) {}
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$a = null;
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foreach ([1, 2, 3] as $i) {
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if (is_int($a)) takesInt($a);
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$a = $i;
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}',
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],
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'secondLoopWithIntCheckAndConditionalSet' => [
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'<?php
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/** @return void **/
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function takesInt(int $i) {}
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$a = null;
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foreach ([1, 2, 3] as $i) {
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if (is_int($a)) takesInt($a);
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if (rand(0, 1)) {
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$a = $i;
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}
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}',
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],
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'secondLoopWithIntCheckAndAssignmentsInIfAndElse' => [
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'<?php
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/** @return void **/
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function takesInt(int $i) {}
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$a = null;
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foreach ([1, 2, 3] as $i) {
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if (is_int($a)) {
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$a = 6;
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} else {
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$a = $i;
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}
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}',
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],
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'secondLoopWithIntCheckAndLoopSet' => [
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'<?php
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/** @return void **/
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function takesInt(int $i) {}
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$a = null;
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foreach ([1, 2, 3] as $i) {
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if (is_int($a)) takesInt($a);
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while (rand(0, 1)) {
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$a = $i;
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}
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}',
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],
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'secondLoopWithReturnInElseif' => [
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'<?php
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class A {}
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class B extends A {}
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class C extends A {}
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$b = null;
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foreach ([new A, new A] as $a) {
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if ($a instanceof B) {
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} elseif (!$a instanceof C) {
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return "goodbye";
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}
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if ($b instanceof C) {
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return "hello";
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}
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$b = $a;
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}',
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],
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'thirdLoopWithIntCheckAndLoopSet' => [
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'<?php
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/** @return void **/
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function takesInt(int $i) {}
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$a = null;
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$b = null;
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foreach ([1, 2, 3] as $i) {
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if ($b !== null) {
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takesInt($b);
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}
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if ($a !== null) {
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takesInt($a);
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$b = $a;
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}
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$a = $i;
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}',
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],
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'implicitFourthLoop' => [
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'<?php
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function test(): int {
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$x = 0;
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$y = 1;
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$z = 2;
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for ($i = 0; $i < 3; $i++) {
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$x = $y;
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$y = $z;
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$z = 5;
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}
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return $x;
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}',
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],
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'unsetInLoop' => [
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'<?php
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$a = null;
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foreach ([1, 2, 3] as $i) {
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$a = $i;
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unset($i);
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}',
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],
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'assignInsideForeach' => [
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'<?php
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$b = false;
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foreach ([1, 2, 3, 4] as $a) {
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if ($a === rand(0, 10)) {
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$b = true;
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}
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}',
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'assertions' => [
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'$b' => 'bool',
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],
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],
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'assignInsideForeachWithBreak' => [
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'<?php
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$b = false;
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foreach ([1, 2, 3, 4] as $a) {
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if ($a === rand(0, 10)) {
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$b = true;
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break;
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}
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}',
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'assertions' => [
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'$b' => 'bool',
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],
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],
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'nullCheckInsideForeachWithContinue' => [
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'<?php
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class A {
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/** @return array<A|null> */
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public static function loadMultiple()
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{
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return [new A, null];
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}
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/** @return void */
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public function barBar() {
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}
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}
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foreach (A::loadMultiple() as $a) {
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if ($a === null) {
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continue;
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}
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$a->barBar();
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}',
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],
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'loopWithArrayKey' => [
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'<?php
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/**
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* @param array<array<int, array<string, string>>> $args
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* @return array[]
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*/
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function get_merged_dict(array $args) {
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$merged = array();
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foreach ($args as $group) {
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foreach ($group as $key => $value) {
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if (isset($merged[$key])) {
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$merged[$key] = array_merge($merged[$key], $value);
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} else {
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$merged[$key] = $value;
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}
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}
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}
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return $merged;
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}',
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],
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'loopWithNoParadox' => [
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'<?php
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$a = ["b", "c", "d"];
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while ($a) {
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$letter = array_pop($a);
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if (!$a) {}
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}',
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],
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'loopWithIfElseNoParadox' => [
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'<?php
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$a = [];
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$b = rand(0, 10) > 5;
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foreach ([1, 2, 3] as $i) {
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if (rand(0, 5)) {
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$a[] = 5;
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continue;
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}
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if ($b) {
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continue; // if this is removed, no failure
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} else {} // if else is removed, no failure
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}
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if ($a) {}',
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],
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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 providerFileCheckerInvalidCodeParse()
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{
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return [
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'possiblyUndefinedArrayInForeach' => [
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'<?php
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foreach ([1, 2, 3, 4] as $b) {
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$array[] = "hello";
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}
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echo $array;',
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'error_message' => 'PossiblyUndefinedVariable - src/somefile.php:3 - Possibly undefined variable ' .
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'$array, first seen on line 3',
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],
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'possiblyUndefinedArrayInWhileAndForeach' => [
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'<?php
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for ($i = 0; $i < 4; $i++) {
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while (rand(0,10) === 5) {
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$array[] = "hello";
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}
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}
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echo $array;',
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'error_message' => 'PossiblyUndefinedVariable - src/somefile.php:4 - Possibly undefined variable ' .
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'$array, first seen on line 4',
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],
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'possiblyUndefinedVariableInForeach' => [
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'<?php
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foreach ([1, 2, 3, 4] as $b) {
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$car = "Volvo";
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}
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echo $car;',
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'error_message' => 'PossiblyUndefinedVariable - src/somefile.php:6 - Possibly undefined variable ' .
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'$car, first seen on line 3',
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],
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'possibleUndefinedVariableInForeachAndIf' => [
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'<?php
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foreach ([1,2,3,4] as $i) {
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if ($i === 1) {
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$a = true;
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break;
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}
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}
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echo $a;',
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'error_message' => 'PossiblyUndefinedVariable - src/somefile.php:9 - Possibly undefined variable $a, ' .
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'first seen on line 4',
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],
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'implicitFourthLoopWithBadReturnType' => [
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'<?php
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function test(): int {
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$x = 0;
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$y = 1;
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$z = 2;
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for ($i = 0; $i < 3; $i++) {
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$x = $y;
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$y = $z;
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$z = "hello";
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}
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return $x;
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}',
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'error_message' => 'InvalidReturnType',
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],
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'possiblyNullCheckInsideForeachWithNoLeaveStatement' => [
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'<?php
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class A {
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/** @return array<A|null> */
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public static function loadMultiple()
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{
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return [new A, null];
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}
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/** @return void */
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public function barBar() {
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}
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}
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foreach (A::loadMultiple() as $a) {
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if ($a === null) {
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// do nothing
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}
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$a->barBar();
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}',
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'error_message' => 'PossiblyNullReference',
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],
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];
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}
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}
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