mirror of
https://github.com/danog/psalm.git
synced 2024-11-30 04:39:00 +01:00
769 lines
25 KiB
PHP
769 lines
25 KiB
PHP
<?php
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namespace Psalm\Tests;
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class SwitchTypeTest 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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'getClassConstArg' => [
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'<?php
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class A {
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/**
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* @return void
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*/
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public function fooFoo() {
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}
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}
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class B {
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/**
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* @return void
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*/
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public function barBar() {
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}
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}
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$a = rand(0, 10) ? new A(): new B();
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switch (get_class($a)) {
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case A::class:
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$a->fooFoo();
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break;
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case B::class:
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$a->barBar();
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break;
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}',
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],
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'getClassExteriorArgClassConsts' => [
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'<?php
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/** @return void */
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function foo(Exception $e) {
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switch (get_class($e)) {
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case InvalidArgumentException::class:
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$e->getMessage();
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break;
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case LogicException::class:
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$e->getMessage();
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break;
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}
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}
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',
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],
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'switchGetClassVar' => [
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'<?php
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class A {}
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class B extends A {
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public function foo(): void {}
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}
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function takesA(A $a): void {
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$class = get_class($a);
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switch ($class) {
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case B::class:
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$a->foo();
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break;
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}
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}',
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],
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'getTypeArg' => [
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'<?php
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function testInt(int $var): void {
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}
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function testString(string $var): void {
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}
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$a = rand(0, 10) ? 1 : "two";
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switch (gettype($a)) {
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case "string":
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testString($a);
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break;
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case "integer":
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testInt($a);
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break;
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}',
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],
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'switchTruthy' => [
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'<?php
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class A {
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/**
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* @var ?string
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*/
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public $a = null;
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/**
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* @var ?string
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*/
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public $b = null;
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}
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function f(A $obj): string {
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switch (true) {
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case $obj->a !== null:
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return $obj->a; // definitely not null
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case !is_null($obj->b):
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return $obj->b; // definitely not null
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default:
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throw new \InvalidArgumentException("$obj->a or $obj->b must be set");
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}
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}',
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],
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'switchMoTruthy' => [
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'<?php
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class A {
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/**
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* @var ?string
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*/
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public $a = null;
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/**
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* @var ?string
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*/
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public $b = null;
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}
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function f(A $obj): string {
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switch (true) {
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case $obj->a:
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return $obj->a; // definitely not null
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case $obj->b:
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return $obj->b; // definitely not null
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default:
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throw new \InvalidArgumentException("$obj->a or $obj->b must be set");
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}
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}',
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],
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'switchWithBadBreak' => [
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'<?php
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class A {}
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function foo(): A {
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switch (rand(0,1)) {
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case true:
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return new A;
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break;
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default:
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return new A;
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}
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}',
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],
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'switchCaseExpression' => [
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'<?php
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switch (true) {
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case preg_match("/(d)ata/", "some data in subject string", $matches):
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return $matches[1];
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default:
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throw new RuntimeException("none found");
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}',
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],
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'switchBools' => [
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'<?php
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$x = false;
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$y = false;
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foreach ([1, 2, 3] as $v) {
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switch($v) {
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case 3:
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$y = true;
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break;
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case 2:
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$x = true;
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break;
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default:
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break;
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}
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}',
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'assertions' => [
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'$x' => 'bool',
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'$y' => 'bool',
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],
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],
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'continueIsBreak' => [
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'<?php
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switch(2) {
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case 2:
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echo "two\n";
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continue;
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}',
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],
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'defaultAboveCase' => [
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'<?php
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function foo(string $a) : string {
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switch ($a) {
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case "a":
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return "hello";
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default:
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case "b":
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return "goodbye";
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}
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}',
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],
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'dontResolveTypesBadly' => [
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'<?php
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$a = new A;
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switch (rand(0,1)) {
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case 0:
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case 1:
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$dt = $a->maybeReturnsDT();
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if (!is_null($dt)) {
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$dt = $dt->format(\DateTime::ISO8601);
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}
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break;
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}
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class A {
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public function maybeReturnsDT(): ?\DateTimeInterface {
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return rand(0,1) ? new \DateTime("now") : null;
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}
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}',
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],
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'issetInFallthrough' => [
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'<?php
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function foo() : void {
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switch(rand() % 4) {
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case 0:
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echo "here";
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break;
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case 1:
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$x = rand() % 4;
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case 2:
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if (isset($x) && $x > 2) {
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echo "$x is large";
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}
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break;
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}
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}',
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],
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'switchManyGetClass' => [
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'<?php
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class A {}
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class B extends A {}
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class C extends A {}
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class D extends A {}
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function foo(A $a) : void {
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switch(get_class($a)) {
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case B::class:
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case C::class:
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case D::class:
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echo "goodbye";
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}
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}',
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],
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'switchManyStrings' => [
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'<?php
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function foo(string $s) : void {
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switch($s) {
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case "a":
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case "b":
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case "c":
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echo "goodbye";
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}
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}',
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],
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'allSwitchesMet' => [
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'<?php
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$a = rand(0, 1) ? "a" : "b";
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switch ($a) {
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case "a":
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$foo = "hello";
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break;
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case "b":
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$foo = "goodbye";
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break;
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}
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echo $foo;',
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],
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'impossibleCaseDefaultWithThrow' => [
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'<?php
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$a = rand(0, 1) ? "a" : "b";
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switch ($a) {
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case "a":
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break;
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case "b":
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break;
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default:
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throw new \Exception("should never happen");
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}',
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],
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'switchOnUnknownInts' => [
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'<?php
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function foo(int $a, int $b, int $c) : void {
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switch ($a) {
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case $b:
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break;
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case $c:
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break;
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}
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}',
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],
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'switchNullable1' => [
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'<?php
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function foo(?string $s) : void {
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switch ($s) {
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case "hello":
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case "goodbye":
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echo "cool";
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break;
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case "hello again":
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echo "cool";
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break;
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}
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}',
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],
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'switchNullable2' => [
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'<?php
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function foo(?string $s) : void {
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switch ($s) {
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case "hello":
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echo "cool";
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case "goodbye":
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echo "cooler";
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break;
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case "hello again":
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echo "cool";
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break;
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}
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}',
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],
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'switchNullable3' => [
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'<?php
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function foo(?string $s) : void {
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switch ($s) {
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case "hello":
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echo "cool";
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break;
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case "goodbye":
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echo "cool";
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break;
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case "hello again":
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echo "cool";
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break;
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}
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}',
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],
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'switchNullable4' => [
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'<?php
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function foo(?string $s, string $a, string $b) : void {
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switch ($s) {
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case $a:
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case $b:
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break;
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}
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}',
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],
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'removeChangedVarsFromReasonableClauses' => [
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'<?php
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function r() : bool {
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return (bool)rand(0, 1);
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}
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function foo(string $s) : void {
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if (($s === "a" || $s === "b")
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&& ($s === "a" || r())
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&& ($s === "b" || r())
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&& (r() || r())
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) {
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// do something
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} else {
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return;
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}
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switch ($s) {
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case "a":
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break;
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case "b":
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break;
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}
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}',
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],
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'preventBadClausesFromBleeding' => [
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'<?php
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function foo (string $s) : void {
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if ($s === "a" && rand(0, 1)) {
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} elseif ($s === "b" && rand(0, 1)) {
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} else {
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return;
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}
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switch ($s) {
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case "a":
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echo "hello";
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break;
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case "b":
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echo "goodbye";
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break;
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}
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}',
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],
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'alwaysReturns' => [
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'<?php
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/**
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* @param "a"|"b" $s
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*/
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function foo(string $s) : string {
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switch ($s) {
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case "a":
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return "hello";
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case "b":
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return "goodbye";
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}
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}',
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],
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'switchVarConditionalAssignment' => [
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'<?php
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switch (rand(0, 4)) {
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case 0:
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$b = 2;
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if (rand(0, 1)) {
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$a = false;
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break;
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}
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default:
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$a = true;
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$b = 1;
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}',
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'assertions' => [
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'$a' => 'bool',
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'$b' => 'int',
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],
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],
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'switchVarConditionalReAssignment' => [
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'<?php
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$a = false;
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switch (rand(0, 4)) {
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case 0:
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$b = 1;
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if (rand(0, 1)) {
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$a = false;
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break;
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}
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default:
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$a = true;
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}',
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'assertions' => [
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'$a' => 'bool',
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],
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],
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'moreThan30Cases' => [
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|
'<?php
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function f(string $a) : void {
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switch ($a) {
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case "a":
|
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case "b":
|
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case "c":
|
|
case "d":
|
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case "e":
|
|
case "f":
|
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case "g":
|
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case "h":
|
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case "i":
|
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case "j":
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case "k":
|
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case "l":
|
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case "m":
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case "n":
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case "o":
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case "p":
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case "q":
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case "r":
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case "s":
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case "t":
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case "u":
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case "v":
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case "w":
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case "x":
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case "y":
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case "z":
|
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case "A":
|
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case "B":
|
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case "C":
|
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case "D":
|
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case "E":
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return;
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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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|
*/
|
|
public function providerInvalidCodeParse()
|
|
{
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return [
|
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'switchReturnTypeWithFallthroughAndBreak' => [
|
|
'<?php
|
|
class A {
|
|
/** @return bool */
|
|
public function fooFoo() {
|
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switch (rand(0,10)) {
|
|
case 1:
|
|
break;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidNullableReturnType',
|
|
],
|
|
'switchReturnTypeWithFallthroughAndConditionalBreak' => [
|
|
'<?php
|
|
class A {
|
|
/** @return bool */
|
|
public function fooFoo() {
|
|
switch (rand(0,10)) {
|
|
case 1:
|
|
if (rand(0,10) === 5) {
|
|
break;
|
|
}
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidNullableReturnType',
|
|
],
|
|
'switchReturnTypeWithNoDefault' => [
|
|
'<?php
|
|
class A {
|
|
/** @return bool */
|
|
public function fooFoo() {
|
|
switch (rand(0,10)) {
|
|
case 1:
|
|
case 2:
|
|
return true;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidNullableReturnType',
|
|
],
|
|
'getClassArgWrongClass' => [
|
|
'<?php
|
|
class A {
|
|
/** @return void */
|
|
public function fooFoo() {
|
|
|
|
}
|
|
}
|
|
|
|
class B {
|
|
/** @return void */
|
|
public function barBar() {
|
|
|
|
}
|
|
}
|
|
|
|
$a = rand(0, 10) ? new A(): new B();
|
|
|
|
switch (get_class($a)) {
|
|
case A::class:
|
|
$a->barBar();
|
|
break;
|
|
}',
|
|
'error_message' => 'UndefinedMethod',
|
|
],
|
|
'getClassMissingClass' => [
|
|
'<?php
|
|
class A {}
|
|
class B {}
|
|
|
|
$a = rand(0, 10) ? new A(): new B();
|
|
|
|
switch (get_class($a)) {
|
|
case C::class:
|
|
break;
|
|
}',
|
|
'error_message' => 'UndefinedClass',
|
|
],
|
|
'getTypeNotAType' => [
|
|
'<?php
|
|
$a = rand(0, 10) ? 1 : "two";
|
|
|
|
switch (gettype($a)) {
|
|
case "int":
|
|
break;
|
|
}',
|
|
'error_message' => 'UnevaluatedCode',
|
|
],
|
|
'getTypeArgWrongArgs' => [
|
|
'<?php
|
|
function testInt(int $var): void {
|
|
|
|
}
|
|
|
|
function testString(string $var): void {
|
|
|
|
}
|
|
|
|
$a = rand(0, 10) ? 1 : "two";
|
|
|
|
switch (gettype($a)) {
|
|
case "string":
|
|
testInt($a);
|
|
|
|
case "integer":
|
|
testString($a);
|
|
}',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'switchBadMethodCallInCase' => [
|
|
'<?php
|
|
function f(string $p): void { }
|
|
|
|
switch (true) {
|
|
case $q = (bool) rand(0,1):
|
|
f($q); // this type problem is not detected
|
|
break;
|
|
}',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'continueIsNotBreak' => [
|
|
'<?php
|
|
switch(2) {
|
|
case 2:
|
|
echo "two\n";
|
|
continue 2;
|
|
}',
|
|
'error_message' => 'ContinueOutsideLoop',
|
|
],
|
|
'defaultAboveCaseThatBreaks' => [
|
|
'<?php
|
|
function foo(string $a) : string {
|
|
switch ($a) {
|
|
case "a":
|
|
return "hello";
|
|
|
|
default:
|
|
case "b":
|
|
break;
|
|
|
|
case "c":
|
|
return "goodbye";
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidReturnType',
|
|
],
|
|
'SKIPPED-switchManyGetClassWithRepetitionWithProperLineNumber' => [
|
|
'<?php
|
|
class A {}
|
|
class B extends A {}
|
|
class C extends A {}
|
|
class D extends A {}
|
|
|
|
function foo(A $a) : void {
|
|
switch(get_class($a)) {
|
|
case B::class:
|
|
case C::class:
|
|
case B::class:
|
|
case C::class:
|
|
case D::class:
|
|
echo "goodbye";
|
|
}
|
|
}',
|
|
'error_message' => 'RedundantCondition - src/somefile.php:10',
|
|
'error_levels' => ['ParadoxicalCondition'],
|
|
],
|
|
'repeatedCaseValue' => [
|
|
'<?php
|
|
$a = rand(0, 1);
|
|
switch ($a) {
|
|
case 0:
|
|
break;
|
|
|
|
case 0:
|
|
echo "I never get here";
|
|
}',
|
|
'error_message' => 'ParadoxicalCondition - src' . DIRECTORY_SEPARATOR . 'somefile.php:7',
|
|
],
|
|
'impossibleCaseValue' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? "a" : "b";
|
|
|
|
switch ($a) {
|
|
case "a":
|
|
break;
|
|
|
|
case "b":
|
|
break;
|
|
|
|
case "c":
|
|
echo "impossible";
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType - src' . DIRECTORY_SEPARATOR . 'somefile.php:11',
|
|
],
|
|
'impossibleCaseDefault' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? "a" : "b";
|
|
|
|
switch ($a) {
|
|
case "a":
|
|
break;
|
|
|
|
case "b":
|
|
break;
|
|
|
|
default:
|
|
echo "impossible";
|
|
}',
|
|
'error_message' => 'ParadoxicalCondition - src' . DIRECTORY_SEPARATOR . 'somefile.php:11',
|
|
],
|
|
'breakWithoutSettingVar' => [
|
|
'<?php
|
|
function foo(int $i) : void {
|
|
switch ($i) {
|
|
case 0:
|
|
if (rand(0, 1)) {
|
|
break;
|
|
}
|
|
|
|
default:
|
|
$a = true;
|
|
}
|
|
|
|
if ($a) {}
|
|
}',
|
|
'error_message' => 'PossiblyUndefinedVariable',
|
|
],
|
|
'getClassExteriorArgStringType' => [
|
|
'<?php
|
|
/** @return void */
|
|
function foo(Exception $e) {
|
|
switch (get_class($e)) {
|
|
case "InvalidArgumentException":
|
|
$e->getMessage();
|
|
break;
|
|
}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType - src' . DIRECTORY_SEPARATOR . 'somefile.php:5:34 - string(InvalidArgumentException) cannot be identical to class-string',
|
|
],
|
|
];
|
|
}
|
|
}
|