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477 lines
16 KiB
PHP
477 lines
16 KiB
PHP
<?php
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namespace Psalm\Tests\TypeReconciliation;
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class AssignmentInConditionalTest extends \Psalm\Tests\TestCase
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{
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use \Psalm\Tests\Traits\InvalidCodeAnalysisTestTrait;
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use \Psalm\Tests\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(): iterable
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{
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return [
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'orWithAssignment' => [
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'<?php
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function maybeString(): ?string {
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return rand(0, 10) > 4 ? "test" : null;
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}
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function test(): string {
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$foo = maybeString();
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($foo !== null) || ($foo = "");
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return $foo;
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}'
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],
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'andWithAssignment' => [
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'<?php
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function maybeString(): ?string {
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return rand(0, 10) > 4 ? "test" : null;
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}
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function test(): string {
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$foo = maybeString();
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($foo === null) && ($foo = "");
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return $foo;
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}'
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],
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'assertHardConditionalWithString' => [
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'<?php
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interface Converter {
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function maybeConvert(string $value): ?SomeObject;
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}
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interface SomeObject {
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function isValid(): bool;
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}
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function exampleWithOr(Converter $converter, string $value): SomeObject {
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if (($value = $converter->maybeConvert($value)) === null || !$value->isValid()) {
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throw new Exception();
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}
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return $value; // $value is SomeObject here and cannot be a string
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}'
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],
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'assertOnRemainderOfArray' => [
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'<?php
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/**
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* @psalm-suppress MixedInferredReturnType
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* @psalm-suppress MixedReturnStatement
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*/
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function foo(string $file_name) : int {
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while ($data = getData()) {
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if (is_numeric($data[0])) {
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for ($i = 1; $i < count($data); $i++) {
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return $data[$i];
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}
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}
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}
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return 5;
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}
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function getData() : ?array {
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return rand(0, 1) ? ["a", "b", "c"] : null;
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}',
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],
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'assertVarRedefinedInIfWithExtraIf' => [
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'<?php
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class O {}
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/**
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* @param mixed $value
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*/
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function exampleWithOr($value): O {
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if (!is_string($value)) {
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return new O();
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}
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if (($value = rand(0, 1) ? new O : null) === null) {
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return new O();
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}
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return $value;
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}'
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],
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'SKIPPED-assertVarRedefinedInOpWithAnd' => [
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'<?php
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class O {
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public function foo() : bool { return true; }
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}
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/** @var mixed */
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$value = $_GET["foo"];
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$a = is_string($value) && (($value = rand(0, 1) ? new O : null) !== null) && $value->foo();',
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[
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'$a' => 'bool',
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]
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],
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'assertVarRedefinedInOpWithOr' => [
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'<?php
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class O {
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public function foo() : bool { return true; }
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}
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/** @var mixed */
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$value = $_GET["foo"];
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$a = !is_string($value) || (($value = rand(0, 1) ? new O : null) === null) || $value->foo();',
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[
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'$a' => 'bool',
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]
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],
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'assertVarInOrAfterAnd' => [
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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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function takesA(A $a): void {}
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function foo(?A $a, ?A $b): void {
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$c = ($a instanceof B && $b instanceof B) || ($a instanceof C && $b instanceof C);
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}'
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],
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'assertAssertionsWithCreation' => [
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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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function getA(A $a): ?A {
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return rand(0, 1) ? $a : null;
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}
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function foo(?A $a, ?A $c): void {
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$c = $a && ($b = getA($a)) && $c ? 1 : 0;
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}'
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],
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'definedInBothBranchesOfConditional' => [
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'<?php
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class A {
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public function foo() : void {}
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}
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function getA(): ?A {
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return rand(0, 1) ? new A() : null;
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}
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function foo(): void {
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$a = null;
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if (($a = getA()) || ($a = getA())) {
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$a->foo();
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}
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}'
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],
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'definedInConditionalAndCheckedInSubbranch' => [
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'<?php
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class A {
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public function foo() : void {}
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}
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function getA(): ?A {
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return rand(0, 1) ? new A() : null;
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}
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function foo(): void {
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if (($a = getA()) || rand(0, 1)) {
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if ($a) {
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$a->foo();
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}
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}
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}'
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],
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'definedInRhsOfConditionalInNegation' => [
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'<?php
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class A {
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public function foo() : void {}
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}
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function getA(): ?A {
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return rand(0, 1) ? new A() : null;
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}
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function foo(): void {
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if (rand(0, 1) && ($a = getA()) !== null) {
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$a->foo();
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}
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}'
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],
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'definedInOrRHS' => [
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'<?php
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class A {
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public function foo() : void {}
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}
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function getA(): ?A {
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return rand(0, 1) ? new A() : null;
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}
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function foo(bool $b): void {
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$a = null;
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if (!$b || !($a = getA())) {
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return;
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}
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$a->foo();
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}'
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],
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'possiblyDefinedVarInAssertion' => [
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'<?php
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class A {
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public function test() : bool { return true; }
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}
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function getMaybeA() : ?A { return rand(0, 1) ? new A : null; }
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function foo() : void {
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if (rand(0, 10) && ($a = getMaybeA()) && !$a->test()) {
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return;
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}
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echo isset($a);
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}'
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],
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'applyTruthyAssertionsToRightHandSideOfAssignment' => [
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'<?php
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function takesAString(string $name): void {}
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function randomReturn(): ?string {
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return rand(1,2) === 1 ? "foo" : null;
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}
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$name = randomReturn();
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if ($foo = ($name !== null)) {
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takesAString($name);
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}'
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],
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'maintainTruthinessInsideAssignment' => [
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'<?php
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class C {
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public function foo() : void {}
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}
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class B {
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public ?C $c = null;
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}
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function updateBackgroundClip(?B $b): void {
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if (!$b || !($a = $b->c)) {
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// do something
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} else {
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/** @psalm-suppress MixedMethodCall */
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$a->foo();
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}
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}'
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],
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'allowBasicOrAssignment' => [
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'<?php
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function test(): int {
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if (rand(0, 1) || ($a = rand(0, 10)) === 0) {
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return 0;
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}
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return $a;
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}
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function test2(?string $comment): ?string {
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if ($comment === null || preg_match("/.*/", $comment, $match) === 0) {
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return null;
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}
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return $match[0];
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}'
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],
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'assertWithAssignmentInOr' => [
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'function test(int $x = null): int {
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\assert($x || ($x = rand(0, 10)));
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return $x;
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}'
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],
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'noParadoxicalConditionAfterTwoAssignments' => [
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'<?php
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function foo(string $str): ?int {
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if (rand(0, 1) || (!($pos = strpos($str, "a")) && !($pos = strpos($str, "b")))) {
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return null;
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}
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return $pos;
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}'
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],
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'assignmentInIf' => [
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'<?php
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if ($row = (rand(0, 10) ? [5] : null)) {
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echo $row[0];
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}',
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],
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'negatedAssignmentInIf' => [
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'<?php
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if (!($row = (rand(0, 10) ? [5] : null))) {
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// do nothing
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}
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else {
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echo $row[0];
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}',
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],
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'assignInElseIf' => [
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'<?php
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if (rand(0, 10) > 5) {
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echo "hello";
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} elseif ($row = (rand(0, 10) ? [5] : null)) {
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echo $row[0];
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}',
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],
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'ifNotEqualsFalse' => [
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'<?php
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if (($row = rand(0,10) ? [1] : false) !== false) {
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echo $row[0];
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}',
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],
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'ifNotEqualsNull' => [
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'<?php
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if (($row = rand(0,10) ? [1] : null) !== null) {
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echo $row[0];
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}',
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],
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'ifNullNotEquals' => [
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'<?php
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if (null !== ($row = rand(0,10) ? [1] : null)) {
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echo $row[0];
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}',
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],
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'ifNullEquals' => [
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'<?php
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if (null === ($row = rand(0,10) ? [1] : null)) {
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} else {
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echo $row[0];
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}',
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],
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'passedByRefInIf' => [
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'<?php
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if (preg_match("/bad/", "badger", $matches)) {
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echo $matches[0];
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}',
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],
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'passByRefInIfCheckAfter' => [
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'<?php
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if (!preg_match("/bad/", "badger", $matches)) {
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exit();
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}
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echo $matches[0];',
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],
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'passByRefInIfWithBoolean' => [
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'<?php
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$a = (bool)rand(0, 1);
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if ($a && preg_match("/bad/", "badger", $matches)) {
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echo $matches[0];
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}',
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],
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'bleedElseifAssignedVarsIntoElseScope' => [
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'<?php
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if (rand(0, 1) === 0) {
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$foo = 0;
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} elseif ($foo = rand(0, 10)) {}
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echo substr("banana", $foo);',
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],
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'repeatedSet' => [
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'<?php
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function foo(): void {
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if ($a = rand(0, 1) ? "" : null) {
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return;
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}
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if (rand(0, 1)) {
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$a = rand(0, 1) ? "hello" : null;
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if ($a) {
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}
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}
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}',
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],
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'repeatedSetInsideWhile' => [
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'<?php
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function foo(): void {
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if ($a = rand(0, 1) ? "" : null) {
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return;
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} else {
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while (rand(0, 1)) {
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$a = rand(0, 1) ? "hello" : null;
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}
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if ($a) {
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}
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}
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}',
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],
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'propertyFetchAfterNotNullCheckInElseif' => [
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'<?php
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class A {
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/** @var ?string */
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public $foo;
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}
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if (rand(0, 10) > 5) {
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} elseif (($a = rand(0, 1) ? new A : null) && $a->foo) {}',
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],
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'noParadoxAfterConditionalAssignment' => [
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'<?php
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if ($a = rand(0, 5)) {
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echo $a;
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} elseif ($a = rand(0, 5)) {
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echo $a;
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}',
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],
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'assignmentInBranchWithReference' => [
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'<?php
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class A {}
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function getAOrFalse(bool $b) : A|false {
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return false;
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}
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function foo(A|false $a): void
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{
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if ($a instanceof A
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|| ($a = getAOrFalse($a))
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) {
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}
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}',
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[],
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[],
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'8.0'
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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(): iterable
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{
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return [
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'assignmentInBranchOfAnd' => [
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'<?php
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function foo(string $str): ?int {
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$pos = 5;
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if (rand(0, 1) && !($pos = $str)) {
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return null;
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}
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return $pos;
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}',
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'error_message' => 'InvalidReturnStatement',
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],
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];
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}
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}
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