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InArrayTest.php
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InArrayTest.php
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<?php
namespace Psalm\Tests\TypeReconciliation;
use Psalm\Tests\TestCase;
use Psalm\Tests\Traits\InvalidCodeAnalysisTestTrait;
use Psalm\Tests\Traits\ValidCodeAnalysisTestTrait;
use const DIRECTORY_SEPARATOR;
class InArrayTest extends TestCase
{
use ValidCodeAnalysisTestTrait;
use InvalidCodeAnalysisTestTrait;
/**
* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?:string[]}>
*/
public function providerValidCodeParse(): iterable
{
return [
'nullTypeRemovedAfterNegatedAssertionAgainstArrayOfInt' => [
'<?php
/**
* @param int|null $x
* @return int
*/
function assertInArray($x) {
if (!in_array($x, range(0, 5), true)) {
throw new \Exception();
}
return $x;
}',
],
'nullTypeRemovedAfterAssertionAgainstArrayOfInt' => [
'<?php
/**
* @param int|null $x
* @param non-empty-list<int> $y
* @return int
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}
',
],
'typeNotChangedAfterAssertionAgainstArrayOfMixed' => [
'<?php
/**
* @param int|null $x
* @param list<mixed> $y
* @return int|null
*/
function assertInArray($x, $y) {
if (!in_array($x, $y, true)) {
throw new \Exception();
}
return $x;
}',
],
'unionTypeReconciledToUnionTypeOfHaystackValueTypes' => [
'<?php
/**
* @param int|string|bool $x
* @param non-empty-list<int|string> $y
* @return int|string
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}
',
],
'unionTypesReducedToIntersectionWithinAssertion' => [
'<?php
/**
* @param int|bool $x
* @param non-empty-list<int|string> $y
* @return int
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
return $x;
}
throw new Exception();
}',
],
'unionTypesReducedToIntersectionOutsideOfNegatedAssertion' => [
'<?php
/**
* @param int|bool $x
* @param non-empty-list<int|string> $y
* @return int
*/
function assertInArray($x, $y) {
if (!in_array($x, $y, true)) {
throw new Exception();
}
return $x;
}',
],
'assertInArrayOfNotIntersectingTypeReturnsOriginalTypeOutsideOfAssertion' => [
'<?php
/**
* @param int $x
* @param list<string> $y
* @return int
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
throw new \Exception();
}
return $x;
}',
'assertions' => [],
'error_level' => ['RedundantConditionGivenDocblockType', 'DocblockTypeContradiction'],
],
'assertNegatedInArrayOfNotIntersectingTypeReturnsOriginalType' => [
'<?php
/**
* @param int $x
* @param list<string> $y
* @return int
*/
function assertInArray($x, $y) {
if (!in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}',
'assertions' => [],
'error_level' => ['RedundantConditionGivenDocblockType'],
],
'assertAgainstListOfLiteralsAndScalarUnion' => [
'<?php
/**
* @param string|bool $x
* @param non-empty-list<"a"|"b"|int> $y
* @return "a"|"b"
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
return $x;
}
throw new Exception();
}',
],
'assertAgainstListOfLiteralsAndScalarUnionTypeHint' => [
'<?php
/**
* @param non-empty-list<"a"|"b"|int> $y
* @return "a"|"b"
*/
function assertInArray(string|bool $x, $y) {
if (in_array($x, $y, true)) {
return $x;
}
throw new Exception();
}',
[],
[],
'8.0'
],
'in_arrayNullOrString' => [
'<?php
function test(?string $x, string $y): void {
if (in_array($x, [null, $y], true)) {
if ($x === null) {
echo "Saw null\n";
}
echo "Saw $x\n";
}
}',
[],
[],
'8.0'
],
'in_array-mixed-twice' => [
'<?php
function contains(array $list1, array $list2, mixed $element): void
{
if (in_array($element, $list1, true)) {
} elseif (in_array($element, $list2, true)) {
}
}',
[],
[],
'8.0'
],
'in_array-string-twice' => [
'<?php
/**
* @param string[] $list1
* @param string[] $list2
*/
function contains(array $list1, array $list2, string $element): void
{
if (in_array($element, $list1, true)) {
} elseif (in_array($element, $list2, true)) {
}
}',
[],
[],
'8.0'
],
'in_array-keyed-array-string-twice' => [
'<?php
function contains(string $a, string $b, mixed $element): void
{
if (in_array($element, [$a], true)) {
} elseif (in_array($element, [$b], true)) {
}
}',
[],
[],
'8.0'
],
];
}
/**
* @return iterable<string,array{string,error_message:string,1?:string[],2?:bool,3?:string}>
*/
public function providerInvalidCodeParse(): iterable
{
return [
'typeNotChangedAfterNegatedAssertionAgainstUnsealedArrayOfMixed' => [
'<?php
/**
* @param int|null $x
* @param non-empty-list<mixed> $y
* @return int
*/
function assertInArray($x, $y) {
if (!in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}
',
'error_message' => 'NullableReturnStatement',
],
'typeNotChangedAfterNegatedAssertionAgainstUnsealedArrayOfUnionType' => [
'<?php
/**
* @param int|null $x
* @param non-empty-list<int|null> $y
* @return int
*/
function assertInArray($x, $y) {
if (!in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}
',
'error_message' => 'NullableReturnStatement',
],
'initialTypeRemainsOutsideOfAssertion' => [
'<?php
/**
* @param int|bool $x
* @param non-empty-list<int|string> $y
* @return int
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
throw new Exception();
}
return $x;
}',
'error_message' => 'InvalidReturnStatement - src' . DIRECTORY_SEPARATOR . 'somefile.php:11:32 - The inferred type \'bool|int\' does not match the declared return type \'int\' for assertInArray',
],
'initialTypeRemainsWithinTheNegatedAssertion' => [
'<?php
/**
* @param int|bool $x
* @param non-empty-list<int|string> $y
* @return int
*/
function assertInArray($x, $y) {
if (!in_array($x, $y, true)) {
return $x;
}
throw new Exception();
}',
'error_message' => 'InvalidReturnStatement - src' . DIRECTORY_SEPARATOR . 'somefile.php:9:36 - The inferred type \'bool|int\' does not match the declared return type \'int\' for assertInArray',
],
'assertInArrayOfNotIntersectingTypeTriggersTypeContradiction' => [
'<?php
/**
* @param int $x
* @param list<string> $y
* @return int
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
throw new \Exception();
}
return $x;
}',
'error_message' => 'DocblockTypeContradiction - src' . DIRECTORY_SEPARATOR . 'somefile.php:8:29 - Operand of type false is always false',
],
'assertNegatedInArrayOfNotIntersectingTypeTriggersRedundantCondition' => [
'<?php
/**
* @param int $x
* @param list<string> $y
* @return int
*/
function assertInArray($x, $y) {
if (!in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}',
'error_message' => 'RedundantConditionGivenDocblockType - src' . DIRECTORY_SEPARATOR . 'somefile.php:8:29 - Operand of type true is always true',
],
'assertInArrayOfNotIntersectingTypeTriggersDocblockTypeContradiction' => [
'<?php
/**
* @param int $x
* @param list<string> $y
* @return string
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}',
'error_message' => 'DocblockTypeContradiction - src' . DIRECTORY_SEPARATOR . 'somefile.php:8:29 - Operand of type false is always false',
],
'assertInArrayOfNotIntersectingTypeReturnsTriggersDocblockTypeContradiction' => [
'<?php
/**
* @param int $x
* @param list<string> $y
* @return string
*/
function assertInArray($x, $y) {
if (in_array($x, $y, true)) {
return $x;
}
throw new \Exception();
}',
'error_message' => 'DocblockTypeContradiction - src' . DIRECTORY_SEPARATOR . 'somefile.php:8:29 - Operand of type false is always false',
'error_levels' => ['RedundantConditionGivenDocblockType'],
],
'inArrayDetectType' => [
'<?php
function x($foo, string $bar): void {
if (!in_array($foo, [$bar], true)) {
throw new Exception();
}
if (is_string($foo)) {}
}',
// foo is always string
'error_message' => 'RedundantCondition',
],
'inArrayRemoveInvalid' => [
'<?php
function x(?string $foo, int $bar): void {
if (!in_array($foo, [$bar], true)) {
throw new Exception();
}
}',
// Type null|string is never int
'error_message' => 'RedundantCondition',
],
];
}
}