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AssertTest.php
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AssertTest.php
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<?php
namespace Psalm\Tests;
class AssertTest extends TestCase
{
use Traits\ValidCodeAnalysisTestTrait;
/**
* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?:string[]}>
*/
public function providerValidCodeParse()
{
return [
'assertArrayReturnTypeNarrowed' => [
'<?php
/** @return array{0:Exception} */
function f(array $a): array {
if ($a[0] instanceof Exception) {
return $a;
}
return [new Exception("bad")];
}',
],
'assertTypeNarrowedByAssert' => [
'<?php
/** @return array{0:Exception,1:Exception} */
function f(array $ret): array {
assert($ret[0] instanceof Exception);
assert($ret[1] instanceof Exception);
return $ret;
}',
],
'assertTypeNarrowedByButOtherFetchesAreMixed' => [
'<?php
/**
* @return array{0:Exception}
* @psalm-suppress MixedArgument
*/
function f(array $ret): array {
assert($ret[0] instanceof Exception);
echo strlen($ret[1]);
return $ret;
}',
],
'assertTypeNarrowedByNestedIsset' => [
'<?php
/**
* @psalm-suppress MixedMethodCall
* @psalm-suppress MixedArgument
*/
function foo(array $array = []): void {
if (array_key_exists("a", $array)) {
echo $array["a"];
}
if (array_key_exists("b", $array)) {
echo $array["b"]->format("Y-m-d");
}
}',
],
'assertCheckOnNonZeroArrayOffset' => [
'<?php
/**
* @param array{string,array|null} $a
* @return string
*/
function f(array $a) {
assert(is_array($a[1]));
return $a[0];
}',
],
'assertOnParseUrlOutput' => [
'<?php
/**
* @param array<"a"|"b"|"c", mixed> $arr
*/
function uriToPath(array $arr) : string {
if (!isset($arr["a"]) || $arr["b"] !== "foo") {
throw new \InvalidArgumentException("bad");
}
return (string) $arr["c"];
}',
],
'combineAfterLoopAssert' => [
'<?php
function foo(array $array) : void {
$c = 0;
if ($array["a"] === "a") {
foreach ([rand(0, 1), rand(0, 1)] as $i) {
if ($array["b"] === "c") {}
$c++;
}
}
}',
],
'assertOnXml' => [
'<?php
function f(array $array) : void {
if ($array["foo"] === "ok") {
if ($array["bar"] === "a") {}
if ($array["bar"] === "b") {}
}
}',
],
'assertOnBacktrace' => [
'<?php
function _validProperty(array $c, array $arr) : void {
if (empty($arr["a"])) {}
if ($c && $c["a"] !== "b") {}
}',
],
'assertOnRemainderOfArray' => [
'<?php
/**
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
function foo(string $file_name) : int {
while ($data = getData()) {
if (is_numeric($data[0])) {
for ($i = 1; $i < count($data); $i++) {
return $data[$i];
}
}
}
return 5;
}
function getData() : ?array {
return rand(0, 1) ? ["a", "b", "c"] : null;
}',
],
'notEmptyCheck' => [
'<?php
/**
* @psalm-suppress MixedAssignment
*/
function load(string $objectName, array $config = []) : void {
if (isset($config["className"])) {
$name = $objectName;
$objectName = $config["className"];
}
if (!empty($config)) {}
}',
],
'unsetAfterIssetCheck' => [
'<?php
function checkbox(array $options = []) : void {
if ($options["a"]) {}
unset($options["a"], $options["b"]);
}',
],
'dontCrashWhenGettingEmptyCountAssertions' => [
'<?php
function foo() : bool {
/** @psalm-suppress TooFewArguments */
return count() > 0;
}',
],
'assertHasArrayAccess' => [
'<?php
/**
* @return array|ArrayAccess
*/
function getBar(array $array) {
if (isset($array[\'foo\'][\'bar\'])) {
return $array[\'foo\'];
}
return [];
}',
],
'assertHasArrayAccessWithType' => [
'<?php
/**
* @param array<string, array<string, string>> $array
* @return array<string, string>
*/
function getBar(array $array) : array {
if (isset($array[\'foo\'][\'bar\'])) {
return $array[\'foo\'];
}
return [];
}',
],
'assertHasArrayAccessOnSimpleXMLElement' => [
'<?php
function getBar(SimpleXMLElement $e, string $s) : void {
if (isset($e[$s])) {
echo (string) $e[$s];
}
if (isset($e[\'foo\'])) {
echo (string) $e[\'foo\'];
}
if (isset($e->bar)) {}
}',
],
'assertArrayOffsetToTraversable' => [
'<?php
function render(array $data): ?Traversable {
if ($data["o"] instanceof Traversable) {
return $data["o"];
}
return null;
}'
],
'assertOnArrayShouldNotChangeType' => [
'<?php
/** @return array|string|false */
function foo(string $a, string $b) {
$options = getopt($a, [$b]);
if (isset($options["config"])) {
$options["c"] = $options["config"];
}
if (isset($options["root"])) {
return $options["root"];
}
return false;
}'
],
'assertOnArrayInTernary' => [
'<?php
function foo(string $a, string $b) : void {
$o = getopt($a, [$b]);
$a = isset($o["a"]) && is_string($o["a"]) ? $o["a"] : "foo";
$a = isset($o["a"]) && is_string($o["a"]) ? $o["a"] : "foo";
echo $a;
}'
],
'nonEmptyArrayAfterIsset' => [
'<?php
/**
* @param array<string, int> $arr
* @return non-empty-array<string, int>
*/
function foo(array $arr) : array {
if (isset($arr["a"])) {
return $arr;
}
return ["b" => 1];
}'
],
'setArrayConstantOffset' => [
'<?php
class S {
const A = 0;
const B = 1;
const C = 2;
}
function foo(array $arr) : void {
switch ($arr[S::A]) {
case S::B:
case S::C:
break;
}
}',
],
'assertArrayWithPropertyOffset' => [
'<?php
class A {
public int $id = 0;
}
class B {
public function foo() : void {}
}
/**
* @param array<int, B> $arr
*/
function foo(A $a, array $arr): void {
if (!isset($arr[$a->id])) {
$arr[$a->id] = new B();
}
$arr[$a->id]->foo();
}'
],
'assertAfterNotEmptyArrayCheck' => [
'<?php
function foo(array $c): void {
if (!empty($c["d"])) {}
foreach (["a", "b", "c"] as $k) {
/** @psalm-suppress MixedAssignment */
foreach ($c[$k] as $d) {}
}
}',
],
'assertNotEmptyTwiceOnInstancePropertyArray' => [
'<?php
class A {
private array $c = [];
public function bar(string $s, string $t): void {
if (empty($this->c[$s]) && empty($this->c[$t])) {}
}
}'
],
'assertNotEmptyTwiceOnStaticPropertyArray' => [
'<?php
class A {
private static array $c = [];
public static function bar(string $s, string $t): void {
if (empty(self::$c[$s]) && empty(self::$c[$t])) {}
}
}'
],
'assertConstantArrayOffsetTwice' => [
'<?php
class A {
const FOO = "foo";
const BAR = "bar";
/** @psalm-suppress MixedArgument */
public function bar(array $args) : void {
if ($args[self::FOO]) {
echo $args[self::FOO];
}
if ($args[self::BAR]) {
echo $args[self::BAR];
}
}
}'
],
'assertNotEmptyOnArray' => [
'<?php
function foo(bool $c, array $arr) : void {
if ($c && !empty($arr["b"])) {
return;
}
if ($c && rand(0, 1)) {}
}'
],
'assertIssetOnArray' => [
'<?php
function foo(bool $c, array $arr) : void {
if ($c && $arr && isset($arr["b"]) && $arr["b"]) {
return;
}
if ($c && rand(0, 1)) {}
}'
],
];
}
}