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mirror of https://github.com/danog/psalm.git synced 2024-12-12 09:19:40 +01:00
psalm/tests/FunctionCallTest.php

2220 lines
77 KiB
PHP

<?php
namespace Psalm\Tests;
class FunctionCallTest extends TestCase
{
use Traits\InvalidCodeAnalysisTestTrait;
use Traits\ValidCodeAnalysisTestTrait;
/**
* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?:string[]}>
*/
public function providerValidCodeParse()
{
return [
'arrayFilter' => [
'<?php
$d = array_filter(["a" => 5, "b" => 12, "c" => null]);
$e = array_filter(
["a" => 5, "b" => 12, "c" => null],
function(?int $i): bool {
return true;
}
);',
'assertions' => [
'$d' => 'array<string, int>',
'$e' => 'array<string, int|null>',
],
],
'arrayFilterAdvanced' => [
'<?php
$f = array_filter(["a" => 5, "b" => 12, "c" => null], function(?int $val, string $key): bool {
return true;
}, ARRAY_FILTER_USE_BOTH);
$g = array_filter(["a" => 5, "b" => 12, "c" => null], function(string $val): bool {
return true;
}, ARRAY_FILTER_USE_KEY);
$bar = "bar";
$foo = [
$bar => function (): string {
return "baz";
},
];
$foo = array_filter(
$foo,
function (string $key): bool {
return $key === "bar";
},
ARRAY_FILTER_USE_KEY
);',
'assertions' => [
'$f' => 'array<string, int|null>',
'$g' => 'array<string, int|null>',
],
],
'arrayFilterIgnoreNullable' => [
'<?php
class A {
/**
* @return array<int, self|null>
*/
public function getRows() : array {
return [new self, null];
}
public function filter() : void {
$arr = array_filter(
static::getRows(),
function (self $row) : bool {
return is_a($row, static::class);
}
);
}
}',
'assertions' => [],
'error_levels' => ['PossiblyInvalidArgument'],
],
'arrayFilterAllowTrim' => [
'<?php
$foo = array_filter(["hello ", " "], "trim");',
],
'arrayFilterAllowNull' => [
'<?php
function foo() : array {
return array_filter(
array_map(
/** @return null */
function (int $arg) {
return null;
},
[1, 2, 3]
)
);
}',
],
'typedArrayWithDefault' => [
'<?php
class A {}
/** @param array<A> $a */
function fooFoo(array $a = []): void {
}',
],
'abs' => [
'<?php
$a = abs(-5);
$b = abs(-7.5);
$c = $_GET["c"];
$c = is_numeric($c) ? abs($c) : null;',
'assertions' => [
'$a' => 'int',
'$b' => 'float',
'$c' => 'numeric|null',
],
'error_levels' => ['MixedAssignment', 'MixedArgument'],
],
'validDocblockParamDefault' => [
'<?php
/**
* @param int|false $p
* @return void
*/
function f($p = false) {}',
],
'byRefNewString' => [
'<?php
function fooFoo(?string &$v): void {}
fooFoo($a);',
],
'byRefVariableFunctionExistingArray' => [
'<?php
$arr = [];
function fooFoo(array &$v): void {}
$function = "fooFoo";
$function($arr);
if ($arr) {}',
],
'byRefProperty' => [
'<?php
class A {
/** @var string */
public $foo = "hello";
}
$a = new A();
function fooFoo(string &$v): void {}
fooFoo($a->foo);',
],
'namespaced' => [
'<?php
namespace A;
/** @return void */
function f(int $p) {}
f(5);',
],
'namespacedRootFunctionCall' => [
'<?php
namespace {
/** @return void */
function foo() { }
}
namespace A\B\C {
foo();
}',
],
'namespacedAliasedFunctionCall' => [
'<?php
namespace Aye {
/** @return void */
function foo() { }
}
namespace Bee {
use Aye as A;
A\foo();
}',
],
'arrayKeys' => [
'<?php
$a = array_keys(["a" => 1, "b" => 2]);',
'assertions' => [
'$a' => 'array<int, string>',
],
],
'arrayKeysMixed' => [
'<?php
/** @var array */
$b = ["a" => 5];
$a = array_keys($b);',
'assertions' => [
'$a' => 'array<int, array-key>',
],
'error_levels' => ['MixedArgument'],
],
'arrayValues' => [
'<?php
$b = array_values(["a" => 1, "b" => 2]);',
'assertions' => [
'$b' => 'array<int, int>',
],
],
'arrayCombine' => [
'<?php
$c = array_combine(["a", "b", "c"], [1, 2, 3]);',
'assertions' => [
'$c' => 'array<string, int>|false',
],
],
'arrayCombineFalse' => [
'<?php
$c = array_combine(["a", "b"], [1, 2, 3]);',
'assertions' => [
'$c' => 'array<string, int>|false',
],
],
'arrayMerge' => [
'<?php
$d = array_merge(["a", "b", "c"], [1, 2, 3]);',
'assertions' => [
'$d' => 'array{0:string, 1:string, 2:string, 3:int, 4:int, 5:int}',
],
],
'arrayReverseDontPreserveKey' => [
'<?php
$d = array_reverse(["a", "b", 1, "d" => 4]);',
'assertions' => [
'$d' => 'non-empty-array<string|int, string|int>',
],
],
'arrayReverseDontPreserveKeyExplicitArg' => [
'<?php
$d = array_reverse(["a", "b", 1, "d" => 4], false);',
'assertions' => [
'$d' => 'non-empty-array<string|int, string|int>',
],
],
'arrayReversePreserveKey' => [
'<?php
$d = array_reverse(["a", "b", 1], true);',
'assertions' => [
'$d' => 'non-empty-array<int, string|int>',
],
],
'arrayDiff' => [
'<?php
$d = array_diff(["a" => 5, "b" => 12], [5]);',
'assertions' => [
'$d' => 'array<string, int>',
],
],
'arrayPopMixed' => [
'<?php
/** @var mixed */
$b = ["a" => 5, "c" => 6];
$a = array_pop($b);',
'assertions' => [
'$a' => 'mixed',
'$b' => 'mixed',
],
'error_levels' => ['MixedAssignment', 'MixedArgument'],
],
'arrayPopNonEmpty' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if ($a) {
$b = array_pop($a);
}
$c = array_pop($a);',
'assertions' => [
'$b' => 'int',
'$c' => 'int|null',
],
],
'arrayPopNonEmptyAfterIsset' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (isset($a["a"])) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCount' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (count($a)) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'noRedundantConditionAfterArrayObjectCountCheck' => [
'<?php
/** @var ArrayObject<int, int> */
$a = [];
$b = 5;
if (count($a)) {}',
],
'noRedundantConditionAfterMixedOrEmptyArrayCountCheck' => [
'<?php
function foo(string $s) : void {
$a = json_decode($s) ?: [];
if (count($a)) {}
if (!count($a)) {}
}',
'assertions' => [],
'error_levels' => ['MixedAssignment', 'MixedArgument'],
],
'objectLikeArrayAssignmentInConditional' => [
'<?php
$a = [];
if (rand(0, 1)) {
$a["a"] = 5;
}
if (count($a)) {}
if (!count($a)) {}',
],
'noRedundantConditionAfterCheckingExplodeLength' => [
'<?php
/** @var string */
$s = "hello";
$segments = explode(".", $s);
if (count($segments) === 1) {}',
],
'arrayPopNonEmptyAfterCountEqualsOne' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (count($a) === 1) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCountSoftEqualsOne' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (count($a) == 1) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCountGreaterThanOne' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (count($a) > 0) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCountGreaterOrEqualsOne' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (count($a) >= 1) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCountEqualsOneReversed' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (1 === count($a)) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCountSoftEqualsOneReversed' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (1 == count($a)) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCountGreaterThanOneReversed' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (0 < count($a)) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterCountGreatorOrEqualToOneReversed' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$b = 5;
if (1 <= count($a)) {
$b = array_pop($a);
}',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterThreeAssertions' => [
'<?php
class A {}
class B extends A {
/** @var array<int, string> */
public $arr = [];
}
/** @var array<A> */
$replacement_stmts = [];
if (!$replacement_stmts
|| !$replacement_stmts[0] instanceof B
|| count($replacement_stmts[0]->arr) > 1
) {
return null;
}
$b = $replacement_stmts[0]->arr;',
'assertions' => [
'$b' => 'array<int, string>',
],
],
'arrayPopNonEmptyAfterArrayAddition' => [
'<?php
/** @var array<string, int> */
$a = ["a" => 5, "b" => 6, "c" => 7];
$a["foo"] = 10;
$b = array_pop($a);',
'assertions' => [
'$b' => 'int',
],
],
'arrayPopNonEmptyAfterMixedArrayAddition' => [
'<?php
/** @var array */
$a = ["a" => 5, "b" => 6, "c" => 7];
$a[] = "hello";
$b = array_pop($a);',
'assertions' => [
'$b' => 'string|mixed',
],
'error_levels' => [
'MixedAssignment',
],
],
'countMoreThan0CanBeInverted' => [
'<?php
$a = [];
if (rand(0, 1)) {
$a[] = "hello";
}
if (count($a) > 0) {
exit;
}',
'assertions' => [
'$a' => 'array<empty, empty>',
],
],
'uasort' => [
'<?php
uasort(
$manifest,
function ($a, $b) {
return strcmp($a["parent"],$b["parent"]);
}
);',
'assertions' => [],
'error_levels' => [
'MixedArrayAccess',
'MixedArgument',
'MissingClosureParamType',
'MissingClosureReturnType',
],
],
'byRefAfterCallable' => [
'<?php
/**
* @param callable $callback
* @return void
*/
function route($callback) {
if (!is_callable($callback)) { }
$a = preg_match("", "", $b);
if ($b[0]) {}
}',
'assertions' => [],
'error_levels' => [
'MixedAssignment',
'MixedArrayAccess',
'RedundantConditionGivenDocblockType',
],
],
'ignoreNullablePregReplace' => [
'<?php
function foo(string $s): string {
$s = preg_replace("/hello/", "", $s);
if ($s === null) {
return "hello";
}
return $s;
}
function bar(string $s): string {
$s = preg_replace("/hello/", "", $s);
return $s;
}
function bat(string $s): ?string {
$s = preg_replace("/hello/", "", $s);
return $s;
}',
],
'extractVarCheck' => [
'<?php
function takesString(string $str): void {}
$foo = null;
$a = ["$foo" => "bar"];
extract($a);
takesString($foo);',
'assertions' => [],
'error_levels' => [
'MixedAssignment',
'MixedArrayAccess',
'MixedArgument',
],
],
'arrayMergeObjectLike' => [
'<?php
/**
* @param array<string, int> $a
* @return array<string, int>
*/
function foo($a)
{
return $a;
}
$a1 = ["hi" => 3];
$a2 = ["bye" => 5];
$a3 = array_merge($a1, $a2);
foo($a3);',
'assertions' => [
'$a3' => 'array{hi:int, bye:int}',
],
],
'arrayRand' => [
'<?php
$vars = ["x" => "a", "y" => "b"];
$c = array_rand($vars);
$d = $vars[$c];
$more_vars = ["a", "b"];
$e = array_rand($more_vars);',
'assertions' => [
'$vars' => 'array{x:string, y:string}',
'$c' => 'string',
'$d' => 'string',
'$more_vars' => 'array{0:string, 1:string}',
'$e' => 'int',
],
],
'arrayRandMultiple' => [
'<?php
$vars = ["x" => "a", "y" => "b"];
$b = 3;
$c = array_rand($vars, 1);
$d = array_rand($vars, 2);
$e = array_rand($vars, 3);
$f = array_rand($vars, $b);',
'assertions' => [
'$vars' => 'array{x:string, y:string}',
'$c' => 'string',
'$e' => 'array<int, string>',
'$f' => 'array<int, string>|string',
],
],
'arrayKeysNoEmpty' => [
'<?php
function expect_string(string $x): void {
echo $x;
}
function test(): void {
foreach (array_keys([]) as $key) {
expect_string($key);
}
}',
'assertions' => [],
'error_levels' => ['MixedAssignment', 'MixedArgument'],
],
'compact' => [
'<?php
function test(): array {
return compact(["val"]);
}',
],
'objectLikeKeyChecksAgainstGeneric' => [
'<?php
/**
* @param array<string, string> $b
*/
function a($b): string
{
return $b["a"];
}
a(["a" => "hello"]);',
],
'objectLikeKeyChecksAgainstObjectLike' => [
'<?php
/**
* @param array{a: string} $b
*/
function a($b): string
{
return $b["a"];
}
a(["a" => "hello"]);',
],
'getenv' => [
'<?php
$a = getenv();
$b = getenv("some_key");',
'assertions' => [
'$a' => 'array<array-key, string>',
'$b' => 'string|false',
],
],
'arrayPopNotNullable' => [
'<?php
function expectsInt(int $a) : void {}
/**
* @param array<array-key, array{item:int}> $list
*/
function test(array $list) : void
{
while (!empty($list)) {
$tmp = array_pop($list);
expectsInt($tmp["item"]);
}
}',
],
'arrayFilterWithAssert' => [
'<?php
$a = array_filter(
[1, "hello", 6, "goodbye"],
function ($s): bool {
return is_string($s);
}
);',
'assertions' => [
'$a' => 'array<int, string>',
],
'error_levels' => [
'MissingClosureParamType',
],
],
'arrayFilterUseKey' => [
'<?php
$bar = "bar";
$foo = [
$bar => function (): string {
return "baz";
},
];
$foo = array_filter(
$foo,
function (string $key): bool {
return $key === "bar";
},
ARRAY_FILTER_USE_KEY
);',
'assertions' => [
'$foo' => 'array<string, Closure():string(baz)>',
],
],
'ignoreFalsableCurrent' => [
'<?php
/** @param string[] $arr */
function foo(array $arr): string {
return current($arr);
}
/** @param string[] $arr */
function bar(array $arr): string {
$a = current($arr);
if ($a === false) {
return "hello";
}
return $a;
}
/**
* @param string[] $arr
* @return string|false
*/
function bat(array $arr) {
return current($arr);
}',
],
'ignoreFalsableFileGetContents' => [
'<?php
function foo(string $s): string {
return file_get_contents($s);
}
function bar(string $s): string {
$a = file_get_contents($s);
if ($a === false) {
return "hello";
}
return $a;
}
/**
* @return string|false
*/
function bat(string $s) {
return file_get_contents($s);
}',
],
'arraySumEmpty' => [
'<?php
$foo = array_sum([]) + 1;',
'assertions' => [
'$foo' => 'float|int',
],
],
'arrayMapObjectLikeAndCallable' => [
'<?php
/**
* @psalm-return array{key1:int,key2:int}
*/
function foo(): array {
$v = ["key1"=> 1, "key2"=> "2"];
$r = array_map("intval", $v);
return $r;
}',
],
'arrayMapObjectLikeAndClosure' => [
'<?php
/**
* @psalm-return array{key1:int,key2:int}
*/
function foo(): array {
$v = ["key1"=> 1, "key2"=> "2"];
$r = array_map(function($i) : int { return intval($i);}, $v);
return $r;
}',
'assertions' => [],
'error_levels' => [
'MissingClosureParamType',
'MixedTypeCoercion',
],
],
'arrayFilterGoodArgs' => [
'<?php
function fooFoo(int $i) : bool {
return true;
}
class A {
public static function barBar(int $i) : bool {
return true;
}
}
array_filter([1, 2, 3], "fooFoo");
array_filter([1, 2, 3], "foofoo");
array_filter([1, 2, 3], "FOOFOO");
array_filter([1, 2, 3], "A::barBar");
array_filter([1, 2, 3], "A::BARBAR");
array_filter([1, 2, 3], "A::barbar");',
],
'arrayFilterIgnoreMissingClass' => [
'<?php
array_filter([1, 2, 3], "A::bar");',
'assertions' => [],
'error_levels' => ['UndefinedClass'],
],
'arrayFilterIgnoreMissingMethod' => [
'<?php
class A {
public static function bar(int $i) : bool {
return true;
}
}
array_filter([1, 2, 3], "A::foo");',
'assertions' => [],
'error_levels' => ['UndefinedMethod'],
],
'validCallables' => [
'<?php
class A {
public static function b() : void {}
}
function c() : void {}
["a", "b"]();
"A::b"();
"c"();',
],
'arrayMapParamDefault' => [
'<?php
$arr = ["a", "b"];
array_map("mapdef", $arr, array_fill(0, count($arr), 1));
function mapdef(string $_a, int $_b = 0): string {
return "a";
}',
],
'noInvalidOperandForCoreFunctions' => [
'<?php
function foo(string $a, string $b) : int {
$aTime = strtotime($a);
$bTime = strtotime($b);
return $aTime - $bTime;
}',
],
'strposIntSecondParam' => [
'<?php
function hasZeroByteOffset(string $s) : bool {
return strpos($s, 0) !== false;
}',
],
'functionCallInGlobalScope' => [
'<?php
$a = function() use ($argv) : void {};',
],
'implodeMultiDimensionalArray' => [
'<?php
$urls = array_map("implode", [["a", "b"]]);',
],
'varExport' => [
'<?php
$a = var_export(["a"], true);',
'assertions' => [
'$a' => 'string',
],
],
'varExportConstFetch' => [
'<?php
class Foo {
const BOOL_VAR_EXPORT_RETURN = true;
/**
* @param mixed $mixed
*/
public static function Baz($mixed) : string {
return var_export($mixed, self::BOOL_VAR_EXPORT_RETURN);
}
}',
],
'key' => [
'<?php
$a = ["one" => 1, "two" => 3];
$b = key($a);
$c = $a[$b];',
'assertions' => [
'$b' => 'null|string',
'$c' => 'int',
],
],
'explodeWithPossiblyFalse' => [
'<?php
/** @return array<int, string> */
function exploder(string $s) : array {
return explode(" ", $s);
}',
],
'allowPossiblyUndefinedClassInClassExists' => [
'<?php
if (class_exists(Foo::class)) {}',
],
'allowConstructorAfterClassExists' => [
'<?php
function foo(string $s) : void {
if (class_exists($s)) {
new $s();
}
}',
'assertions' => [],
'error_levels' => ['MixedMethodCall'],
],
'next' => [
'<?php
$arr = ["one", "two", "three"];
$n = next($arr);',
'assertions' => [
'$n' => 'string|false',
],
],
'iteratorToArray' => [
'<?php
/**
* @return Generator<stdClass>
*/
function generator(): Generator {
yield new stdClass;
}
$a = iterator_to_array(generator());',
'assertions' => [
'$a' => 'array<mixed, stdClass>',
],
],
'iteratorToArrayWithGetIterator' => [
'<?php
class C implements IteratorAggregate {
/**
* @return Traversable<int,string>
*/
public function getIterator() {
yield 1 => "1";
}
}
$a = iterator_to_array(new C);',
'assertions' => [
'$a' => 'array<int, string>',
],
],
'arrayColumnInference' => [
'<?php
function makeMixedArray(): array { return []; }
/** @return array<array<int,bool>> */
function makeGenericArray(): array { return []; }
/** @return array<array{0:string}> */
function makeShapeArray(): array { return []; }
/** @return array<array{0:string}|int> */
function makeUnionArray(): array { return []; }
$a = array_column([[1], [2], [3]], 0);
$b = array_column([["a" => 1], ["a" => 2], ["a" => 3]], "a");
$c = array_column([["k" => "a", "v" => 1], ["k" => "b", "v" => 2]], "v", "k");
$d = array_column([], 0);
$e = array_column(makeMixedArray(), 0);
$f = array_column(makeGenericArray(), 0);
$g = array_column(makeShapeArray(), 0);
$h = array_column(makeUnionArray(), 0);
',
'assertions' => [
'$a' => 'array<array-key, int>',
'$b' => 'array<array-key, int>',
'$c' => 'array<string, int>',
'$d' => 'array<array-key, mixed>',
'$e' => 'array<array-key, mixed>',
'$f' => 'array<array-key, mixed>',
'$g' => 'array<array-key, string>',
'$h' => 'array<array-key, mixed>',
],
],
'strtrWithPossiblyFalseFirstArg' => [
'<?php
/**
* @param string|false $str
* @param array<string, string> $replace_pairs
* @return string
*/
function strtr_wrapper($str, array $replace_pairs) {
/** @psalm-suppress PossiblyFalseArgument */
return strtr($str, $replace_pairs);
}',
],
'splatArrayIntersect' => [
'<?php
$foo = [
[1, 2, 3],
[1, 2],
];
$bar = array_intersect(... $foo);',
'assertions' => [
'$bar' => 'array<int, int>',
],
],
'arrayReduce' => [
'<?php
$arr = [2, 3, 4, 5];
function multiply (int $carry, int $item) : int {
return $carry * $item;
}
$f2 = function (int $carry, int $item) : int {
return $carry * $item;
};
$direct_closure_result = array_reduce(
$arr,
function (int $carry, int $item) : int {
return $carry * $item;
},
1
);
$passed_closure_result = array_reduce(
$arr,
$f2,
1
);
$function_call_result = array_reduce(
$arr,
"multiply",
1
);',
'assertions' => [
'$direct_closure_result' => 'int',
'$passed_closure_result' => 'int',
'$function_call_result' => 'int',
],
],
'arrayReduceMixedReturn' => [
'<?php
$arr = [2, 3, 4, 5];
$direct_closure_result = array_reduce(
$arr,
function (int $carry, int $item) {
return $_GET["boo"];
},
1
);',
'assertions' => [],
'error_levels' => ['MissingClosureReturnType', 'MixedAssignment'],
],
'versionCompare' => [
'<?php
function getString() : string {
return rand(0, 1) ? "===" : "==";
}
$a = version_compare("5.0.0", "7.0.0");
$b = version_compare("5.0.0", "7.0.0", "==");
$c = version_compare("5.0.0", "7.0.0", getString());
',
'assertions' => [
'$a' => 'int',
'$b' => 'bool',
'$c' => 'bool|null',
],
],
'getTimeOfDay' => [
'<?php
$a = gettimeofday(true) - gettimeofday(true);
$b = gettimeofday();
$c = gettimeofday(false);',
'assertions' => [
'$a' => 'float',
'$b' => 'array<string, int>',
'$c' => 'array<string, int>',
],
],
'parseUrlArray' => [
'<?php
function foo(string $s) : string {
return parse_url($s)["host"] ?? "";
}
function bar(string $s) : string {
$parsed = parse_url($s);
return $parsed["host"];
}
function baz(string $s) : string {
$parsed = parse_url($s);
return $parsed["host"];
}
function bag(string $s) : string {
$parsed = parse_url($s);
if (is_string($parsed["host"] ?? false)) {
return $parsed["host"];
}
return "";
}
function hereisanotherone(string $s) : string {
$parsed = parse_url($s);
if (isset($parsed["host"]) && is_string($parsed["host"])) {
return $parsed["host"];
}
return "";
}
function hereisthelastone(string $s) : string {
$parsed = parse_url($s);
if (isset($parsed["host"]) && is_string($parsed["host"])) {
return $parsed["host"];
}
return "";
}
function portisint(string $s) : int {
$parsed = parse_url($s);
if (isset($parsed["port"])) {
return $parsed["port"];
}
return 80;
}
function portismaybeint(string $s) : ? int {
$parsed = parse_url($s);
return $parsed["port"] ?? null;
}
$porta = parse_url("", PHP_URL_PORT);
$porte = parse_url("localhost:443", PHP_URL_PORT);',
'assertions' => [
'$porta' => 'int|null',
'$porte' => 'int|null',
],
'error_levels' => ['MixedReturnStatement', 'MixedInferredReturnType'],
],
'parseUrlComponent' => [
'<?php
function foo(string $s) : string {
return parse_url($s, PHP_URL_HOST) ?? "";
}
function bar(string $s) : string {
return parse_url($s, PHP_URL_HOST);
}
function bag(string $s) : string {
$host = parse_url($s, PHP_URL_HOST);
if (is_string($host)) {
return $host;
}
return "";
}',
],
'triggerUserError' => [
'<?php
function mightLeave() : string {
if (rand(0, 1)) {
trigger_error("bad", E_USER_ERROR);
} else {
return "here";
}
}',
],
'getParentClass' => [
'<?php
class A {}
class B extends A {}
$b = get_parent_class(new A());
if ($b === false) {}
$c = new $b();',
'assertions' => [],
'error_levels' => ['MixedMethodCall'],
],
'arraySplice' => [
'<?php
$a = [1, 2, 3];
$c = $a;
$b = ["a", "b", "c"];
array_splice($a, -1, 1, $b);
$d = [1, 2, 3];
array_splice($d, -1, 1);',
'assertions' => [
'$a' => 'non-empty-array<int, string|int>',
'$b' => 'array{0:string, 1:string, 2:string}',
'$c' => 'array{0:int, 1:int, 2:int}',
],
],
'arraySpliceOtherType' => [
'<?php
$d = [["red"], ["green"], ["blue"]];
array_splice($d, -1, 1, "foo");',
'assertions' => [
'$d' => 'array<int, array{0:string}|string>',
],
],
'ksortPreserveShape' => [
'<?php
$a = ["a" => 3, "b" => 4];
ksort($a);
acceptsAShape($a);
/**
* @param array{a:int,b:int} $a
*/
function acceptsAShape(array $a): void {}',
],
'suppressError' => [
'<?php
$a = @file_get_contents("foo");',
'assertions' => [
'$a' => 'string|false',
],
],
'arraySlicePreserveKeys' => [
'<?php
$a = ["a" => 1, "b" => 2, "c" => 3];
$b = array_slice($a, 1, 2, true);
$c = array_slice($a, 1, 2, false);
$d = array_slice($a, 1, 2);',
'assertions' => [
'$b' => 'non-empty-array<string, int>',
'$c' => 'array<int, int>',
'$d' => 'array<int, int>',
],
],
'printrOutput' => [
'<?php
function foo(string $s) : void {
echo $s;
}
foo(print_r(1, true));',
],
'microtime' => [
'<?php
$a = microtime(true);
$b = microtime();
/** @psalm-suppress InvalidArgument */
$c = microtime(1);
$d = microtime(false);',
'assertions' => [
'$a' => 'float',
'$b' => 'string',
'$c' => 'float|string',
'$d' => 'string',
],
],
'filterVar' => [
'<?php
function filterInt(string $s) : int {
$filtered = filter_var($s, FILTER_VALIDATE_INT);
if ($filtered === false) {
return 0;
}
return $filtered;
}
function filterNullableInt(string $s) : ?int {
return filter_var($s, FILTER_VALIDATE_INT, ["options" => ["default" => null]]);
}
function filterIntWithDefault(string $s) : int {
return filter_var($s, FILTER_VALIDATE_INT, ["options" => ["default" => 5]]);
}
function filterBool(string $s) : bool {
return filter_var($s, FILTER_VALIDATE_BOOLEAN);
}
function filterNullableBool(string $s) : ?bool {
return filter_var($s, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
}
function filterNullableBoolWithFlagsArray(string $s) : ?bool {
return filter_var($s, FILTER_VALIDATE_BOOLEAN, ["flags" => FILTER_NULL_ON_FAILURE]);
}
function filterFloat(string $s) : float {
$filtered = filter_var($s, FILTER_VALIDATE_FLOAT);
if ($filtered === false) {
return 0.0;
}
return $filtered;
}
function filterFloatWithDefault(string $s) : float {
return filter_var($s, FILTER_VALIDATE_FLOAT, ["options" => ["default" => 5.0]]);
}',
],
'callVariableVar' => [
'<?php
class Foo
{
public static function someInt(): int
{
return 1;
}
}
/**
* @return int
*/
function makeInt()
{
$fooClass = Foo::class;
return $fooClass::someInt();
}',
],
'expectsIterable' => [
'<?php
function foo(iterable $i) : void {}
function bar(array $a) : void {
foo($a);
}',
],
'getTypeHasValues' => [
'<?php
/**
* @param mixed $maybe
*/
function matchesTypes($maybe) : void {
$t = gettype($maybe);
if ($t === "object") {}
}',
],
'functionResolutionInNamespace' => [
'<?php
namespace Foo;
function sort(int $_) : void {}
sort(5);',
],
'rangeWithIntStep' => [
'<?php
function foo(int $bar) : string {
return (string) $bar;
}
foreach (range(1, 10, 1) as $x) {
foo($x);
}',
],
'rangeWithNoStep' => [
'<?php
function foo(int $bar) : string {
return (string) $bar;
}
foreach (range(1, 10) as $x) {
foo($x);
}',
],
'rangeWithNoStepAndString' => [
'<?php
function foo(string $bar) : void {}
foreach (range("a", "z") as $x) {
foo($x);
}',
],
'rangeWithFloatStep' => [
'<?php
function foo(float $bar) : string {
return (string) $bar;
}
foreach (range(1, 10, .3) as $x) {
foo($x);
}',
],
'rangeWithFloatStart' => [
'<?php
function foo(float $bar) : string {
return (string) $bar;
}
foreach (range(1.5, 10) as $x) {
foo($x);
}',
],
'duplicateNamespacedFunction' => [
'<?php
namespace Bar;
function sort() : void {}',
],
'arrayMapAfterFunctionMissingFile' => [
'<?php
require_once(FOO);
$urls = array_map("strval", [1, 2, 3]);',
[],
'error_levels' => ['UndefinedConstant', 'UnresolvableInclude'],
],
'noNamespaceClash' => [
'<?php
namespace FunctionNamespace {
function foo() : void {}
}
namespace ClassNamespace {
class Foo {}
}
namespace {
use ClassNamespace\Foo;
use function FunctionNamespace\foo;
new Foo();
foo();
}',
],
'round' => [
'<?php
$a = round(4.6);
$b = round(3.6, 0);
$c = round(3.0, 1);
$d = round(3.1, 2);
/** @var int */
$sig = 1;
$e = round(3.1, $sig);',
'assertions' => [
'$a' => 'int',
'$b' => 'int',
'$c' => 'float',
'$d' => 'float',
'$e' => 'int|float',
],
],
'hashInit70' => [
'<?php
$h = hash_init("sha256");',
[
'$h' => 'resource',
],
[],
'7.1',
],
'hashInit71' => [
'<?php
$h = hash_init("sha256");',
[
'$h' => 'resource',
],
[],
'7.1',
],
'hashInit72' => [
'<?php
$h = hash_init("sha256");',
[
'$h' => 'HashContext',
],
[],
'7.2',
],
'hashInit73' => [
'<?php
$h = hash_init("sha256");',
[
'$h' => 'HashContext',
],
[],
'7.3',
],
'nullableByRef' => [
'<?php
function foo(?string &$s) : void {}
function bar() : void {
foo($bar);
}',
],
'getClassNewInstance' => [
'<?php
interface I {}
class C implements I {}
class Props {
/** @var class-string<I>[] */
public $arr = [];
}
(new Props)->arr[] = get_class(new C);',
],
'getClassVariable' => [
'<?php
interface I {}
class C implements I {}
$c_instance = new C;
class Props {
/** @var class-string<I>[] */
public $arr = [];
}
(new Props)->arr[] = get_class($c_instance);',
],
'getClassAnonymousNewInstance' => [
'<?php
interface I {}
class Props {
/** @var class-string<I>[] */
public $arr = [];
}
(new Props)->arr[] = get_class(new class implements I{});',
],
'getClassAnonymousVariable' => [
'<?php
interface I {}
$anon_instance = new class implements I {};
class Props {
/** @var class-string<I>[] */
public $arr = [];
}
(new Props)->arr[] = get_class($anon_instance);',
],
'arrayReversePreserveNonEmptiness' => [
'<?php
/** @param string[] $arr */
function getOrderings(array $arr): int {
if ($arr) {
$next = null;
foreach (array_reverse($arr) as $v) {
$next = 1;
}
return $next;
}
return 2;
}',
],
'mktime' => [
'<?php
/** @psalm-suppress InvalidScalarArgument */
$a = mktime("foo");
/** @psalm-suppress MixedArgument */
$b = mktime($_GET["foo"]);
$c = mktime(1, 2, 3);',
'assertions' => [
'$a' => 'int|false',
'$b' => 'int|false',
'$c' => 'int',
]
],
'PHP73-hrtime' => [
'<?php
$a = hrtime(true);
$b = hrtime();
/** @psalm-suppress InvalidArgument */
$c = hrtime(1);
$d = hrtime(false);',
'assertions' => [
'$a' => 'int',
'$b' => 'array{0:int, 1:int}',
'$c' => 'array{0:int, 1:int}|int',
'$d' => 'array{0:int, 1:int}',
],
],
'PHP73-hrtimeCanBeFloat' => [
'<?php
$a = hrtime(true);
if (is_int($a)) {}
if (is_float($a)) {}',
],
'min' => [
'<?php
$a = min(0, 1);
$b = min([0, 1]);
$c = min("a", "b");
$d = min(1, 2, 3, 4);
$e = min(1, 2, 3, 4, 5);
$f = min(...[1, 2, 3]);',
'assertions' => [
'$a' => 'int',
'$b' => 'int',
'$c' => 'string',
'$d' => 'int',
'$e' => 'int',
'$f' => 'int',
],
],
'minUnpackedArg' => [
'<?php
$f = min(...[1, 2, 3]);',
'assertions' => [
'$f' => 'int',
],
],
'sscanf' => [
'<?php
sscanf("10:05:03", "%d:%d:%d", $hours, $minutes, $seconds);',
'assertions' => [
'$hours' => 'string|int|float',
'$minutes' => 'string|int|float',
'$seconds' => 'string|int|float',
],
],
'inferArrayMapReturnType' => [
'<?php
/** @return array<string> */
function Foo(DateTime ...$dateTimes) : array {
return array_map(
function ($dateTime) {
return (string) ($dateTime->format("c"));
},
$dateTimes
);
}',
],
'noImplicitAssignmentToStringFromMixedWithDocblockTypes' => [
'<?php
/** @param string $s */
function takesString($s) : void {}
function takesInt(int $i) : void {}
/**
* @param mixed $s
* @psalm-suppress MixedArgument
*/
function bar($s) : void {
takesString($s);
takesInt($s);
}',
],
'ignoreNullableIssuesAfterMixedCoercion' => [
'<?php
function takesNullableString(?string $s) : void {}
function takesString(string $s) : void {}
/**
* @param mixed $s
* @psalm-suppress MixedArgument
*/
function bar($s) : void {
takesNullableString($s);
takesString($s);
}',
],
];
}
/**
* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
*/
public function providerInvalidCodeParse()
{
return [
'arrayFilterWithoutTypes' => [
'<?php
$e = array_filter(
["a" => 5, "b" => 12, "c" => null],
function(?int $i) {
return $_GET["a"];
}
);',
'error_message' => 'MixedArgumentTypeCoercion',
'error_levels' => ['MissingClosureParamType', 'MissingClosureReturnType'],
],
'arrayFilterUseMethodOnInferrableInt' => [
'<?php
$a = array_filter([1, 2, 3, 4], function ($i) { return $i->foo(); });',
'error_message' => 'InvalidMethodCall',
],
'arrayMapUseMethodOnInferrableInt' => [
'<?php
$a = array_map(function ($i) { return $i->foo(); }, [1, 2, 3, 4]);',
'error_message' => 'InvalidMethodCall',
],
'invalidScalarArgument' => [
'<?php
function fooFoo(int $a): void {}
fooFoo("string");',
'error_message' => 'InvalidScalarArgument',
],
'invalidArgumentWithDeclareStrictTypes' => [
'<?php declare(strict_types=1);
function fooFoo(int $a): void {}
fooFoo("string");',
'error_message' => 'InvalidArgument',
],
'builtinFunctioninvalidArgumentWithWeakTypes' => [
'<?php
$s = substr(5, 4);',
'error_message' => 'InvalidScalarArgument',
],
'builtinFunctioninvalidArgumentWithDeclareStrictTypes' => [
'<?php declare(strict_types=1);
$s = substr(5, 4);',
'error_message' => 'InvalidArgument',
],
'builtinFunctioninvalidArgumentWithDeclareStrictTypesInClass' => [
'<?php declare(strict_types=1);
class A {
public function foo() : void {
$s = substr(5, 4);
}
}',
'error_message' => 'InvalidArgument',
],
'mixedArgument' => [
'<?php
function fooFoo(int $a): void {}
/** @var mixed */
$a = "hello";
fooFoo($a);',
'error_message' => 'MixedArgument',
'error_levels' => ['MixedAssignment'],
],
'nullArgument' => [
'<?php
function fooFoo(int $a): void {}
fooFoo(null);',
'error_message' => 'NullArgument',
],
'tooFewArguments' => [
'<?php
function fooFoo(int $a): void {}
fooFoo();',
'error_message' => 'TooFewArguments',
],
'tooManyArguments' => [
'<?php
function fooFoo(int $a): void {}
fooFoo(5, "dfd");',
'error_message' => 'TooManyArguments - src' . DIRECTORY_SEPARATOR . 'somefile.php:3:21 - Too many arguments for method fooFoo '
. '- expecting 1 but saw 2',
],
'tooManyArgumentsForConstructor' => [
'<?php
class A { }
new A("hello");',
'error_message' => 'TooManyArguments',
],
'typeCoercion' => [
'<?php
class A {}
class B extends A{}
function fooFoo(B $b): void {}
fooFoo(new A());',
'error_message' => 'ArgumentTypeCoercion',
],
'arrayTypeCoercion' => [
'<?php
class A {}
class B extends A{}
/**
* @param B[] $b
* @return void
*/
function fooFoo(array $b) {}
fooFoo([new A()]);',
'error_message' => 'ArgumentTypeCoercion',
],
'duplicateParam' => [
'<?php
/**
* @return void
*/
function f($p, $p) {}',
'error_message' => 'DuplicateParam',
'error_levels' => ['MissingParamType'],
],
'invalidParamDefault' => [
'<?php
function f(int $p = false) {}',
'error_message' => 'InvalidParamDefault',
],
'invalidDocblockParamDefault' => [
'<?php
/**
* @param int $p
* @return void
*/
function f($p = false) {}',
'error_message' => 'InvalidParamDefault',
],
'badByRef' => [
'<?php
function fooFoo(string &$v): void {}
fooFoo("a");',
'error_message' => 'InvalidPassByReference',
],
'badArrayByRef' => [
'<?php
function fooFoo(array &$a): void {}
fooFoo([1, 2, 3]);',
'error_message' => 'InvalidPassByReference',
],
'invalidArgAfterCallable' => [
'<?php
/**
* @param callable $callback
* @return void
*/
function route($callback) {
if (!is_callable($callback)) { }
takes_int("string");
}
function takes_int(int $i) {}',
'error_message' => 'InvalidScalarArgument',
'error_levels' => [
'MixedAssignment',
'MixedArrayAccess',
'RedundantConditionGivenDocblockType',
],
],
'undefinedFunctionInArrayMap' => [
'<?php
array_map(
"undefined_function",
[1, 2, 3]
);',
'error_message' => 'UndefinedFunction',
],
'arrayMapWithNonCallableStringArray' => [
'<?php
$foo = ["one", "two"];
array_map($foo, ["hello"]);',
'error_message' => 'InvalidArgument',
],
'arrayMapWithNonCallableIntArray' => [
'<?php
$foo = [1, 2];
array_map($foo, ["hello"]);',
'error_message' => 'InvalidArgument',
],
'objectLikeKeyChecksAgainstDifferentGeneric' => [
'<?php
/**
* @param array<string, int> $b
*/
function a($b): int
{
return $b["a"];
}
a(["a" => "hello"]);',
'error_message' => 'InvalidScalarArgument',
],
'objectLikeKeyChecksAgainstDifferentObjectLike' => [
'<?php
/**
* @param array{a: int} $b
*/
function a($b): int
{
return $b["a"];
}
a(["a" => "hello"]);',
'error_message' => 'InvalidArgument',
],
'possiblyNullFunctionCall' => [
'<?php
$a = rand(0, 1) ? function(): void {} : null;
$a();',
'error_message' => 'PossiblyNullFunctionCall',
],
'possiblyInvalidFunctionCall' => [
'<?php
$a = rand(0, 1) ? function(): void {} : 23515;
$a();',
'error_message' => 'PossiblyInvalidFunctionCall',
],
'arrayFilterBadArgs' => [
'<?php
function foo(int $i) : bool {
return true;
}
array_filter(["hello"], "foo");',
'error_message' => 'InvalidScalarArgument',
],
'arrayFilterTooFewArgs' => [
'<?php
function foo(int $i, string $s) : bool {
return true;
}
array_filter([1, 2, 3], "foo");',
'error_message' => 'TooFewArguments',
],
'arrayMapBadArgs' => [
'<?php
function foo(int $i) : bool {
return true;
}
array_map("foo", ["hello"]);',
'error_message' => 'InvalidScalarArgument',
],
'arrayMapTooFewArgs' => [
'<?php
function foo(int $i, string $s) : bool {
return true;
}
array_map("foo", [1, 2, 3]);',
'error_message' => 'TooFewArguments',
],
'arrayMapTooManyArgs' => [
'<?php
function foo() : bool {
return true;
}
array_map("foo", [1, 2, 3]);',
'error_message' => 'TooManyArguments',
],
'varExportAssignmentToVoid' => [
'<?php
$a = var_export(["a"]);',
'error_message' => 'AssignmentToVoid',
],
'explodeWithEmptyString' => [
'<?php
function exploder(string $s) : array {
return explode("", $s);
}',
'error_message' => 'FalsableReturnStatement',
],
'complainAboutArrayToIterable' => [
'<?php
class A {}
class B {}
/**
* @param iterable<mixed,A> $p
*/
function takesIterableOfA(iterable $p): void {}
takesIterableOfA([new B]); // should complain',
'error_message' => 'InvalidArgument',
],
'complainAboutArrayToIterableSingleParam' => [
'<?php
class A {}
class B {}
/**
* @param iterable<A> $p
*/
function takesIterableOfA(iterable $p): void {}
takesIterableOfA([new B]); // should complain',
'error_message' => 'InvalidArgument',
],
'putInvalidTypeMessagesFirst' => [
'<?php
$q = rand(0,1) ? new stdClass : false;
strlen($q);',
'error_message' => 'InvalidArgument',
],
'arrayReduceInvalidClosureTooFewArgs' => [
'<?php
$arr = [2, 3, 4, 5];
$direct_closure_result = array_reduce(
$arr,
function (int $carry) : int {
return 5;
},
1
);',
'error_message' => 'InvalidArgument',
'error_levels' => ['MixedTypeCoercion'],
],
'arrayReduceInvalidItemType' => [
'<?php
$arr = [2, 3, 4, 5];
$direct_closure_result = array_reduce(
$arr,
function (int $carry, stdClass $item) {
return $_GET["boo"];
},
1
);',
'error_message' => 'InvalidArgument',
'error_levels' => ['MissingClosureReturnType'],
],
'arrayReduceInvalidCarryType' => [
'<?php
$arr = [2, 3, 4, 5];
$direct_closure_result = array_reduce(
$arr,
function (stdClass $carry, int $item) {
return $_GET["boo"];
},
1
);',
'error_message' => 'InvalidArgument',
'error_levels' => ['MissingClosureReturnType'],
],
'arrayReduceInvalidCarryOutputType' => [
'<?php
$arr = [2, 3, 4, 5];
$direct_closure_result = array_reduce(
$arr,
function (int $carry, int $item) : stdClass {
return new stdClass;
},
1
);',
'error_message' => 'InvalidArgument',
],
'arrayPopNotNull' => [
'<?php
function expectsInt(int $a) : void {}
/**
* @param array<array-key, array{item:int}> $list
*/
function test(array $list) : void
{
while (!empty($list)) {
$tmp = array_pop($list);
if ($tmp === null) {}
}
}',
'error_message' => 'DocblockTypeContradiction',
],
'getTypeInvalidValue' => [
'<?php
/**
* @param mixed $maybe
*/
function matchesTypes($maybe) : void {
$t = gettype($maybe);
if ($t === "bool") {}
}',
'error_message' => 'TypeDoesNotContainType',
],
'rangeWithFloatStep' => [
'<?php
function foo(int $bar) : string {
return (string) $bar;
}
foreach (range(1, 10, .3) as $x) {
foo($x);
}',
'error_message' => 'InvalidScalarArgument',
],
'rangeWithFloatStart' => [
'<?php
function foo(int $bar) : string {
return (string) $bar;
}
foreach (range(1.4, 10) as $x) {
foo($x);
}',
'error_message' => 'InvalidScalarArgument',
],
'duplicateFunction' => [
'<?php
function f() : void {}
function f() : void {}',
'error_message' => 'DuplicateFunction',
],
'duplicateCoreFunction' => [
'<?php
function sort() : void {}',
'error_message' => 'DuplicateFunction',
],
'usortInvalidComparison' => [
'<?php
$arr = [["one"], ["two"], ["three"]];
usort(
$arr,
function (string $a, string $b): int {
return strcmp($a, $b);
}
);',
'error_message' => 'InvalidArgument',
],
'usortInvalidCallableString' => [
'<?php
$a = [[1], [2], [3]];
usort($a, "strcmp");',
'error_message' => 'InvalidArgument',
],
'functionCallOnMixed' => [
'<?php
/**
* @var mixed $s
* @psalm-suppress MixedAssignment
*/
$s = 1;
$s();',
'error_message' => 'MixedFunctionCall',
],
'iterableOfObjectCannotAcceptIterableOfInt' => [
'<?php
/** @param iterable<string,object> $_p */
function accepts(iterable $_p): void {}
/** @return iterable<int,int> */
function iterable() { yield 1; }
accepts(iterable());',
'error_message' => 'InvalidArgument',
],
'iterableOfObjectCannotAcceptTraversableOfInt' => [
'<?php
/** @param iterable<string,object> $_p */
function accepts(iterable $_p): void {}
/** @return Traversable<int,int> */
function traversable() { yield 1; }
accepts(traversable());',
'error_message' => 'InvalidArgument',
],
'iterableOfObjectCannotAcceptGeneratorOfInt' => [
'<?php
/** @param iterable<string,object> $_p */
function accepts(iterable $_p): void {}
/** @return Generator<int,int,mixed,void> */
function generator() { yield 1; }
accepts(generator());',
'error_message' => 'InvalidArgument',
],
'iterableOfObjectCannotAcceptArrayOfInt' => [
'<?php
/** @param iterable<string,object> $_p */
function accepts(iterable $_p): void {}
/** @return array<int,int> */
function arr() { return [1]; }
accepts(arr());',
'error_message' => 'InvalidArgument',
],
'nonNullableByRef' => [
'<?php
function foo(string &$s) : void {}
function bar() : void {
foo($bar);
}',
'error_message' => 'NullReference',
],
'intCastByRef' => [
'<?php
function foo(int &$i) : void {}
$a = rand(0, 1) ? null : 5;
/** @psalm-suppress MixedArgument */
foo((int) $a);',
'error_message' => 'InvalidPassByReference',
],
'implicitAssignmentToStringFromMixed' => [
'<?php
/** @param "a"|"b" $s */
function takesString(string $s) : void {}
function takesInt(int $i) : void {}
/**
* @param mixed $s
* @psalm-suppress MixedArgument
*/
function bar($s) : void {
takesString($s);
takesInt($s);
}',
'error_message' => 'InvalidScalarArgument'
],
];
}
}