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psalm/tests/Loop/ForTest.php
2022-01-23 23:49:23 +01:00

233 lines
7.4 KiB
PHP

<?php
namespace Psalm\Tests\Loop;
use Psalm\Tests\TestCase;
use Psalm\Tests\Traits\InvalidCodeAnalysisTestTrait;
use Psalm\Tests\Traits\ValidCodeAnalysisTestTrait;
use const DIRECTORY_SEPARATOR;
class ForTest extends TestCase
{
use InvalidCodeAnalysisTestTrait;
use ValidCodeAnalysisTestTrait;
/**
* @return iterable<string,array{code:string,assertions?:array<string,string>,ignored_issues?:list<string>}>
*/
public function providerValidCodeParse(): iterable
{
return [
'implicitFourthLoop' => [
'code' => '<?php
function test(): int {
$x = 0;
$y = 1;
$z = 2;
for ($i = 0; $i < 3; $i++) {
$x = $y;
$y = $z;
$z = 5;
}
return $x;
}',
],
'falseToBoolInContinueAndBreak' => [
'code' => '<?php
$a = false;
for ($i = 0; $i < 4; $i++) {
$j = rand(0, 10);
if ($j === 2) {
$a = true;
continue;
}
if ($j === 3) {
$a = true;
break;
}
}',
'assignments' => [
'$a' => 'bool',
],
],
'forLoopwithOKChange' => [
'code' => '<?php
$j = 5;
for ($i = $j; $i < 4; $i++) {
$j = 9;
}',
],
'preventNegativeZeroScrewingThingsUp' => [
'code' => '<?php
function foo() : void {
/** @var array<int, int> $v */
$v = [1 => 0];
for ($d = 0; $d <= 10; $d++) {
for ($k = -$d; $k <= $d; $k += 2) {
if ($k === -$d || ($k !== $d && $v[$k-1] < $v[$k+1])) {
$x = $v[$k+1];
} else {
$x = $v[$k-1] + 1;
}
$v[$k] = $x;
}
}
}',
],
'whileTrueWithBreak' => [
'code' => '<?php
for (;;) {
$a = "hello";
break;
}
for (;;) {
$b = 5;
break;
}',
'assertions' => [
'$a' => 'string',
'$b' => 'int',
],
],
'continueOutsideLoop' => [
'code' => '<?php
class Node {
/** @var Node|null */
public $next;
}
/** @return void */
function test(Node $head) {
for ($node = $head; $node; $node = $next) {
$next = $node->next;
$node->next = null;
}
}',
],
'echoAfterFor' => [
'code' => '<?php
for ($i = 0; $i < 5; $i++);
echo $i;',
],
'nestedEchoAfterFor' => [
'code' => '<?php
for ($i = 1; $i < 2; $i++) {
for ($j = 1; $j < 2; $j++) {}
}
echo $i * $j;'
],
'reconcileOuterVars' => [
'code' => '<?php
for ($i = 0; $i < 2; $i++) {
if ($i === 0) {
continue;
}
}'
],
'noException' => [
'code' => '<?php
/**
* @param list<int> $arr
*/
function cartesianProduct(array $arr) : void {
for ($i = 20; $arr[$i] === 5 && $i > 0; $i--) {}
}'
],
'noCrashOnLongThing' => [
'code' => '<?php
/**
* @param list<array{a: array{int, int}}> $data
*/
function makeData(array $data) : array {
while (rand(0, 1)) {
while (rand(0, 1)) {
while (rand(0, 1)) {
if (rand(0, 1)) {
continue;
}
$data[0]["a"] = array_merge($data[0]["a"], $data[0]["a"]);
}
}
}
return $data;
}'
],
'InfiniteForLoop' => [
'code' => '<?php
/**
* @return int
*/
function g() {
for (;;) {
return 1;
}
}
/**
* @return int
*/
function h() {
for (;1;) {
return 1;
}
}'
],
];
}
/**
* @return iterable<string,array{code:string,error_message:string,ignored_issues?:list<string>,php_version?:string}>
*/
public function providerInvalidCodeParse(): iterable
{
return [
'possiblyUndefinedArrayInWhileAndForeach' => [
'code' => '<?php
for ($i = 0; $i < 4; $i++) {
while (rand(0,10) === 5) {
$array[] = "hello";
}
}
echo $array;',
'error_message' => 'PossiblyUndefinedGlobalVariable - src' . DIRECTORY_SEPARATOR . 'somefile.php:4:29 - Possibly undefined ' .
'global variable $array, first seen on line 4',
],
'forLoopInvalidation' => [
'code' => '<?php
for ($i = 0; $i < 4; $i++) {
foreach ([1, 2, 3] as $i) {}
}',
'error_message' => 'LoopInvalidation',
],
'forInfiniteNoBreak' => [
'code' => '<?php
for (;;) {
$a = "hello";
}
echo $a;',
'error_message' => 'UndefinedGlobalVariable',
],
'nestedEchoAfterFor' => [
'code' => '<?php
for ($i = 1; $i < 2; $i++) {
if (rand(0, 1)) break;
for ($j = 1; $j < 2; $j++) {}
}
echo $i * $j;',
'error_message' => 'PossiblyUndefinedGlobalVariable',
],
];
}
}