mirror of
https://github.com/danog/psalm.git
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543 lines
18 KiB
PHP
543 lines
18 KiB
PHP
<?php
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namespace Psalm\Tests;
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use const DIRECTORY_SEPARATOR;
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class PureAnnotationTest extends TestCase
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{
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use Traits\InvalidCodeAnalysisTestTrait;
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use Traits\ValidCodeAnalysisTestTrait;
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/**
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* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?:string[]}>
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*/
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public function providerValidCodeParse()
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{
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return [
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'simplePureFunction' => [
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'<?php
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namespace Bar;
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class A {
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public int $a = 5;
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}
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/** @psalm-pure */
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function filterOdd(int $i, A $a) : ?int {
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if ($i % 2 === 0 || $a->a === 2) {
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return $i;
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}
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$a = new A();
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return null;
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}',
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],
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'pureFunctionCallingBuiltinFunctions' => [
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'<?php
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namespace Bar;
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/** @psalm-pure */
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function lower(string $s) : string {
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return substr(strtolower($s), 0, 10);
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}',
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],
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'pureWithStrReplace' => [
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'<?php
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/** @psalm-pure */
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function highlight(string $needle, string $output) : string {
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$needle = preg_quote($needle, \'#\');
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$needles = str_replace([\'"\', \' \'], [\'\', \'|\'], $needle);
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$output = preg_replace("#({$needles})#im", "<mark>$1</mark>", $output);
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return $output;
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}'
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],
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'implicitAnnotations' => [
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'<?php
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abstract class Foo {
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private array $options;
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private array $defaultOptions;
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function __construct(array $options) {
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$this->setOptions($options);
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$this->setDefaultOptions($this->getOptions());
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}
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function getOptions(): array {
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return $this->options;
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}
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function setOptions(array $options): void {
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$this->options = $options;
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}
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function setDefaultOptions(array $defaultOptions): void {
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$this->defaultOptions = $defaultOptions;
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}
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}',
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],
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'canCreateObjectWithNoExternalMutations' => [
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'<?php
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/** @psalm-external-mutation-free */
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class Counter {
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private int $count = 0;
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public function __construct(int $count) {
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$this->count = $count;
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}
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public function increment() : void {
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$this->count++;
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}
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public function incrementByTwo() : void {
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$this->count = $this->count + 2;
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}
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public function incrementByFive() : void {
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$this->count += 5;
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}
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}
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/** @psalm-pure */
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function makesACounter(int $i) : Counter {
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$c = new Counter($i);
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$c->increment();
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$c->incrementByTwo();
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$c->incrementByFive();
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return $c;
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}',
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],
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'canCreateImmutableObject' => [
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'<?php
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/** @psalm-immutable */
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class A {
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private string $s;
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public function __construct(string $s) {
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$this->s = $s;
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}
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public function getShort() : string {
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return substr($this->s, 0, 5);
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}
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}
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/** @psalm-pure */
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function makeA(string $s) : A {
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$a = new A($s);
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if ($a->getShort() === "bar") {
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return new A("foo");
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}
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return $a;
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}'
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],
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'assertIsPureInProductionn' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function toDateTime(?DateTime $dateTime) : DateTime {
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assert($dateTime instanceof DateTime);
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return $dateTime;
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}'
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],
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'allowArrayMapClosure' => [
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'<?php
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/**
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* @psalm-pure
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* @param string[] $arr
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*/
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function foo(array $arr) : array {
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return \array_map(function(string $s) { return $s;}, $arr);
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}'
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],
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'pureBuiltinCall' => [
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'<?php
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final class Date
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{
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/** @psalm-pure */
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public static function timeZone(string $tzString) : DateTimeZone
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{
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return new \DateTimeZone($tzString);
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}
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}',
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],
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'sortFunction' => [
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'<?php
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/**
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* @psalm-pure
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*
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* @param int[] $ar
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*/
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function foo(array $ar): int
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{
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usort($ar, static function (int $a, int $b): int {
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return $a <=> $b;
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});
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return $ar[0] ?? 0;
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}',
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],
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'allowPureToString' => [
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'<?php
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class A {
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/** @psalm-pure */
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public function __toString() {
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return "bar";
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}
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}
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/**
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* @psalm-pure
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*/
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function foo(string $s, A $a) : string {
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if ($a == $s) {}
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return $s;
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}',
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],
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'exceptionGetMessage' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function getMessage(Throwable $e): string {
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return $e->getMessage();
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}
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echo getMessage(new Exception("test"));'
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],
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'exceptionGetCode' => [
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'<?php
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/**
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* @psalm-pure
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*
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* @return int|string https://www.php.net/manual/en/throwable.getcode.php
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*/
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function getCode(Throwable $e) {
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return $e->getCode();
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}
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echo getCode(new Exception("test"));'
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],
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'exceptionGetFile' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function getFile(Throwable $e): string {
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return $e->getFile();
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}
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echo getFile(new Exception("test"));'
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],
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'exceptionGetLine' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function getLine(Throwable $e): int {
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return $e->getLine();
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}
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echo getLine(new Exception("test"));'
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],
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'exceptionGetTrace' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function getTrace(Throwable $e): array {
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return $e->getTrace();
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}
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echo count(getTrace(new Exception("test")));'
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],
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'exceptionGetPrevious' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function getPrevious(Throwable $e): ?Throwable {
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return $e->getPrevious();
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}
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echo gettype(getPrevious(new Exception("test")));'
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],
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'exceptionGetTraceAsString' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function getTraceAsString(Throwable $e): string {
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return $e->getTraceAsString();
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}
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echo getTraceAsString(new Exception("test"));'
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],
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'callingMethodInThrowStillPure' => [
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'<?php
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final class MyException extends \Exception {
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public static function hello(): self
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{
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return new self();
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}
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}
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/**
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* @psalm-pure
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*/
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function sumExpectedToNotBlowPowerFuse(int $first, int $second): int {
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$sum = $first + $second;
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if ($sum > 9000) {
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throw MyException::hello();
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}
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if ($sum > 90001) {
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throw new MyException();
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}
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return $sum;
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}'
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],
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];
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}
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/**
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* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
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*/
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public function providerInvalidCodeParse()
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{
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return [
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'impurePropertyAssignment' => [
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'<?php
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namespace Bar;
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class A {
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public int $a = 5;
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}
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/** @psalm-pure */
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function filterOdd(int $i, A $a) : ?int {
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$a->a++;
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if ($i % 2 === 0 || $a->a === 2) {
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return $i;
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}
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return null;
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}',
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'error_message' => 'ImpurePropertyAssignment',
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],
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'impureMethodCall' => [
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'<?php
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namespace Bar;
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class A {
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public int $a = 5;
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public function foo() : void {
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$this->a++;
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}
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}
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/** @psalm-pure */
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function filterOdd(int $i, A $a) : ?int {
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$a->foo();
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if ($i % 2 === 0 || $a->a === 2) {
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return $i;
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}
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return null;
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}',
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'error_message' => 'ImpureMethodCall',
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],
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'impureFunctionCall' => [
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'<?php
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namespace Bar;
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function impure() : ?string {
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/** @var int */
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static $i = 0;
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++$i;
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return $i % 2 ? "hello" : null;
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}
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/** @psalm-pure */
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function filterOdd(array $a) : void {
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impure();
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}',
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'error_message' => 'ImpureFunctionCall',
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],
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'impureConstructorCall' => [
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'<?php
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namespace Bar;
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class A {
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public int $a = 5;
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}
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class B {
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public function __construct(A $a) {
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$a->a++;
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}
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}
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/** @psalm-pure */
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function filterOdd(int $i, A $a) : ?int {
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$b = new B($a);
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if ($i % 2 === 0 || $a->a === 2) {
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return $i;
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}
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return null;
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}',
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'error_message' => 'ImpureMethodCall',
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],
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'canCreateObjectWithNoExternalMutations' => [
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'<?php
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class Counter {
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private int $count = 0;
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public function __construct(int $count) {
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$this->count = $count;
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}
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public function increment() : void {
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$this->count += rand(0, 5);
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}
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}
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/** @psalm-pure */
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function makesACounter(int $i) : Counter {
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$c = new Counter($i);
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$c->increment();
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return $c;
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}',
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'error_message' => 'ImpureMethodCall',
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],
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'useOfStaticMakesFunctionImpure' => [
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'<?php
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/** @psalm-pure */
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function addCumulative(int $left) : int {
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/** @var int */
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static $i = 0;
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$i += $left;
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return $left;
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}',
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'error_message' => 'ImpureStaticVariable',
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],
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'preventImpureArrayMapClosure' => [
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'<?php
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/**
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* @psalm-pure
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* @param string[] $arr
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*/
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function foo(array $arr) : array {
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return \array_map(function(string $s) { return $s . rand(0, 1);}, $arr);
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}',
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'error_message' => 'ImpureFunctionCall',
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],
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'sortFunctionImpure' => [
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'<?php
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/**
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* @psalm-pure
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*
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* @param int[] $ar
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*/
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function foo(array $ar): int
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{
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usort($ar, static function (int $a, int $b): int {
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session_start();
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return $a <=> $b;
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});
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return $ar[0] ?? 0;
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}',
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'error_message' => 'ImpureFunctionCall',
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],
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'impureByRef' => [
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'<?php
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/**
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* @psalm-pure
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*/
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function foo(string &$a): string {
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$a = "B";
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return $a;
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}',
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'error_message' => 'ImpureByReferenceAssignment'
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],
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'staticPropertyFetch' => [
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'<?php
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final class Number1 {
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public static ?string $zero = null;
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/**
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* @psalm-pure
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*/
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public static function zero(): ?string {
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return self::$zero;
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}
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}',
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'error_message' => 'ImpureStaticProperty',
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],
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'staticPropertyAssignment' => [
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'<?php
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final class Number1 {
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/** @var string|null */
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private static $zero;
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/**
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* @psalm-pure
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*/
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public static function zero(): string {
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self::$zero = "Zero";
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return "hello";
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}
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}',
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'error_message' => 'ImpureStaticProperty',
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],
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'preventImpureToStringViaComparison' => [
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'<?php
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class A {
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public function __toString() {
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echo "hi";
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return "bar";
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}
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}
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/**
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* @psalm-pure
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*/
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function foo(string $s, A $a) : string {
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if ($a == $s) {}
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return $s;
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}',
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'error_message' => 'ImpureMethodCall'
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],
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'preventImpureToStringViaConcatenation' => [
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'<?php
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class A {
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public function __toString() {
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echo "hi";
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return "bar";
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}
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}
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/**
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* @psalm-pure
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*/
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function foo(string $s, A $a) : string {
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return $a . $s;
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}',
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'error_message' => 'ImpureMethodCall'
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],
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];
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}
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}
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