mirror of
https://github.com/danog/psalm.git
synced 2024-12-11 16:59:45 +01:00
1686 lines
52 KiB
PHP
1686 lines
52 KiB
PHP
<?php
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namespace Psalm\Tests;
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use function preg_quote;
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use Psalm\Config;
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use Psalm\Context;
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use Psalm\Internal\Analyzer\FileAnalyzer;
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use Psalm\Tests\Internal\Provider;
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use function strpos;
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class UnusedVariableTest extends TestCase
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{
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/** @var \Psalm\Internal\Analyzer\ProjectAnalyzer */
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protected $project_analyzer;
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/**
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* @return void
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*/
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public function setUp() : void
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{
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FileAnalyzer::clearCache();
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$this->file_provider = new Provider\FakeFileProvider();
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$this->project_analyzer = new \Psalm\Internal\Analyzer\ProjectAnalyzer(
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new TestConfig(),
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new \Psalm\Internal\Provider\Providers(
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$this->file_provider,
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new Provider\FakeParserCacheProvider()
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)
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);
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$this->project_analyzer->setPhpVersion('7.3');
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$this->project_analyzer->getCodebase()->reportUnusedVariables();
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}
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/**
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* @dataProvider providerValidCodeParse
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*
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* @param string $code
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* @param array<string> $error_levels
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*
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* @return void
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*/
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public function testValidCode($code, array $error_levels = [])
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{
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$test_name = $this->getTestName();
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if (strpos($test_name, 'SKIPPED-') !== false) {
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$this->markTestSkipped('Skipped due to a bug.');
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}
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$file_path = self::$src_dir_path . 'somefile.php';
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$this->addFile(
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$file_path,
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$code
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);
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foreach ($error_levels as $error_level) {
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$this->project_analyzer->getCodebase()->config->setCustomErrorLevel($error_level, Config::REPORT_SUPPRESS);
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}
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$context = new Context();
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$context->collect_references = true;
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$this->analyzeFile($file_path, $context);
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}
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/**
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* @dataProvider providerInvalidCodeParse
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*
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* @param string $code
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* @param string $error_message
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* @param array<string> $error_levels
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*
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* @return void
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*/
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public function testInvalidCode($code, $error_message, $error_levels = [])
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{
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if (strpos($this->getTestName(), 'SKIPPED-') !== false) {
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$this->markTestSkipped();
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}
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$this->expectException(\Psalm\Exception\CodeException::class);
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$this->expectExceptionMessageRegExp('/\b' . preg_quote($error_message, '/') . '\b/');
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$file_path = self::$src_dir_path . 'somefile.php';
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foreach ($error_levels as $error_level) {
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$this->project_analyzer->getCodebase()->config->setCustomErrorLevel($error_level, Config::REPORT_SUPPRESS);
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}
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$this->addFile(
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$file_path,
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$code
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);
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$context = new Context();
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$context->collect_references = true;
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$this->analyzeFile($file_path, $context);
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}
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/**
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* @return array<string, array{string,error_levels?:string[]}>
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*/
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public function providerValidCodeParse()
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{
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return [
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'arrayOffset' => [
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'<?php
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$a = 0;
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$arr = ["hello"];
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echo $arr[$a];',
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],
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'unset' => [
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'<?php
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$a = 0;
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$arr = ["hello"];
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unset($arr[$a]);',
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],
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'usedVariables' => [
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'<?php
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/** @return string */
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function foo() {
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$a = 5;
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$b = [];
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$c[] = "hello";
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class Foo {
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public function __construct(string $_i) {}
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}
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$d = "Foo";
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$e = "arg";
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$f = new $d($e);
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return $a . implode(",", $b) . $c[0] . get_class($f);
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}',
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'error_levels' => [
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'PossiblyUndefinedVariable',
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'MixedArrayAccess',
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'MixedOperand',
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'MixedAssignment',
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'InvalidStringClass',
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],
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],
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'varDefinedInIfWithReference' => [
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'<?php
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$a = 5;
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if (rand(0, 1)) {
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$b = "hello";
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} else {
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$b = "goodbye";
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}
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echo $a . $b;',
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],
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'varRedefinedInIfWithReference' => [
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'<?php
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$a = (string) "fdf";
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if (rand(0, 1)) {
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$a = (string) "ard";
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}
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echo $a;',
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],
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'byrefInForeachLoopWithReference' => [
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'<?php
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$a = [1, 2, 3];
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foreach ($a as &$b) {
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$b = $b + 1;
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}
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echo $a[0];',
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],
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'foreachVarSetInValue' => [
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'<?php
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/** @param string[] $arr */
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function foo(array $arr) : void {
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$a = null;
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foreach ($arr as $a) { }
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if ($a) {}
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}',
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],
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'definedInSecondBranchOfCondition' => [
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'<?php
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if (rand(0, 1) && $a = rand(0, 1)) {
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echo $a;
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}',
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],
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'booleanOr' => [
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'<?php
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function foo(int $a, int $b): bool {
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return $a || $b;
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}',
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],
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'paramUsedInIf' => [
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'<?php
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function foo(string $a): void {
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if (rand(0, 1)) {
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echo $a;
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}
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}',
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],
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'dummyByRefVar' => [
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'<?php
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function foo(string &$a = null, string $b = null): void {
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if ($a) {
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echo $a;
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}
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if ($b) {
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echo $b;
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}
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}
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function bar(): void {
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foo($dummy_byref_var, "hello");
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}
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bar();',
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],
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'foreachReassigned' => [
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'<?php
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$a = false;
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foreach ([1, 2, 3] as $b) {
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$a = true;
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echo $b;
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}
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echo $a;',
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],
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'doWhileReassigned' => [
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'<?php
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$a = 5;
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do {
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echo $a;
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$a = $a - rand(-3, 3);
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} while ($a > 3);',
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],
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'loopTypeChangedInIfAndContinueWithReference' => [
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'<?php
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$a = false;
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while (rand(0, 1)) {
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if (rand(0, 1)) {
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$a = true;
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continue;
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}
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$a = false;
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}
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echo $a;',
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],
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'loopReassignedInIfAndContinueWithReferenceAfter' => [
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'<?php
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$a = 5;
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while (rand(0, 1)) {
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if (rand(0, 1)) {
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$a = 7;
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continue;
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}
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$a = 3;
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}
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echo $a;',
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],
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'loopReassignedInIfAndContinueWithReferenceBeforeAndAfter' => [
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'<?php
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$a = 5;
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echo $a;
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while (rand(0, 1)) {
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if (rand(0, 1)) {
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$a = 7;
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continue;
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}
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$a = 3;
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}
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echo $a;',
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],
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'loopReassigned' => [
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'<?php
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$a = false;
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while(rand(0, 1)) {
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$a = true;
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}
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echo $a;',
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],
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'ifVarReassignedInBranchWithUse' => [
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'<?php
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$a = true;
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if (rand(0, 1)) {
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$a = false;
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}
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if ($a) {
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echo "cool";
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}',
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],
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'elseVarReassignedInBranchAndReference' => [
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'<?php
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$a = false;
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if (rand(0, 1)) {
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// do nothing
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} else {
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$a = true;
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//echo $a;
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}
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if ($a) {
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echo "cool";
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}',
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],
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'switchVarReassignedInBranch' => [
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'<?php
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$a = false;
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switch (rand(0, 2)) {
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case 0:
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$a = true;
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}
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if ($a) {
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echo "cool";
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}',
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],
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'switchVarDefinedInAllBranches' => [
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'<?php
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switch (rand(0, 2)) {
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case 0:
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$a = true;
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break;
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default:
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$a = false;
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}
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if ($a) {
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echo "cool";
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}',
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],
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'switchVarConditionalAssignmentWithReference' => [
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'<?php
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switch (rand(0, 4)) {
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case 0:
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if (rand(0, 1)) {
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$a = 0;
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break;
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}
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default:
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$a = 1;
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}
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echo $a;',
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],
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'throwWithMessageCall' => [
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'<?php
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function dangerous(): void {
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throw new \Exception("bad");
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}
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function callDangerous(): void {
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try {
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dangerous();
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} catch (Exception $e) {
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echo $e->getMessage();
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}
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}',
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],
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'throwWithMessageCallAndAssignmentAndReference' => [
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'<?php
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function dangerous(): string {
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if (rand(0, 1)) {
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throw new \Exception("bad");
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}
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return "hello";
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}
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function callDangerous(): void {
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$s = null;
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try {
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$s = dangerous();
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} catch (Exception $e) {
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echo $e->getMessage();
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}
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if ($s) {}
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}',
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],
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'throwWithMessageCallAndAssignmentInCatchAndReference' => [
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'<?php
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function dangerous(): string {
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if (rand(0, 1)) {
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throw new \Exception("bad");
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}
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return "hello";
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}
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function callDangerous(): void {
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$s = null;
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try {
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dangerous();
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} catch (Exception $e) {
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echo $e->getMessage();
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$s = "hello";
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}
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if ($s) {}
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}',
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],
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'throwWithMessageCallAndAssignmentInTryAndCatchAndReference' => [
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'<?php
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function dangerous(): string {
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if (rand(0, 1)) {
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throw new \Exception("bad");
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}
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return "hello";
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}
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function callDangerous(): void {
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$s = null;
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try {
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$s = dangerous();
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} catch (Exception $e) {
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echo $e->getMessage();
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$s = "hello";
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}
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if ($s) {}
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}',
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],
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'throwWithMessageCallAndNestedAssignmentInTryAndCatchAndReference' => [
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'<?php
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function dangerous(): string {
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if (rand(0, 1)) {
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throw new \Exception("bad");
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}
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return "hello";
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}
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function callDangerous(): void {
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$s = null;
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if (rand(0, 1)) {
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$s = "hello";
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} else {
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try {
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$t = dangerous();
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} catch (Exception $e) {
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echo $e->getMessage();
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$t = "hello";
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}
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if ($t) {
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$s = $t;
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}
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}
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if ($s) {}
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}',
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],
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'throwWithReturnInOneCatch' => [
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'<?php
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class E1 extends Exception {}
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|
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|
function dangerous(): void {
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if (rand(0, 1)) {
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throw new \Exception("bad");
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}
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}
|
|
|
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function callDangerous(): void {
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try {
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dangerous();
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$s = true;
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} catch (E1 $e) {
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echo $e->getMessage();
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$s = false;
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} catch (Exception $e) {
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return;
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}
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|
|
|
if ($s) {}
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}',
|
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],
|
|
'loopWithIfRedefinition' => [
|
|
'<?php
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$i = false;
|
|
|
|
foreach ([1, 2, 3] as $a) {
|
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if (rand(0, 1)) {
|
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$i = true;
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|
}
|
|
|
|
echo $a;
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|
}
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|
|
|
if ($i) {}',
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|
],
|
|
'unknownMethodCallWithVar' => [
|
|
'<?php
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|
/** @psalm-suppress MixedMethodCall */
|
|
function passesByRef(object $a): void {
|
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$a->passedByRef($b);
|
|
}',
|
|
],
|
|
'usedMethodCallVariable' => [
|
|
'<?php
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|
function reindex(array $arr, string $methodName): array {
|
|
$ret = [];
|
|
|
|
foreach ($arr as $element) {
|
|
$ret[$element->$methodName()] = true;
|
|
}
|
|
|
|
return $ret;
|
|
}',
|
|
'error_levels' => [
|
|
'MixedAssignment',
|
|
'MixedMethodCall',
|
|
'MixedArrayOffset',
|
|
'MixedTypeCoercion',
|
|
],
|
|
],
|
|
'globalVariableUsage' => [
|
|
'<?php
|
|
$a = "hello";
|
|
function example() : void {
|
|
global $a;
|
|
echo $a;
|
|
}
|
|
example();',
|
|
],
|
|
'staticVar' => [
|
|
'<?php
|
|
function use_static() : void {
|
|
static $token;
|
|
if (!$token) {
|
|
$token = rand(1, 10);
|
|
}
|
|
echo "token is $token\n";
|
|
}',
|
|
],
|
|
'staticVarUsedLater' => [
|
|
'<?php
|
|
function use_static() : int {
|
|
static $x = null;
|
|
if ($x) {
|
|
return (int) $x;
|
|
}
|
|
$x = rand(0, 1);
|
|
return -1;
|
|
}',
|
|
],
|
|
'tryCatchWithUseInIf' => [
|
|
'<?php
|
|
function example_string() : string {
|
|
if (rand(0, 1) > 0) {
|
|
return "value";
|
|
}
|
|
throw new Exception("fail");
|
|
}
|
|
|
|
function main() : void {
|
|
try {
|
|
$s = example_string();
|
|
if (!$s) {
|
|
echo "Failed to get string\n";
|
|
}
|
|
} catch (Exception $e) {
|
|
$s = "fallback";
|
|
}
|
|
printf("s is %s\n", $s);
|
|
}',
|
|
],
|
|
'loopTypeChangedInIfAndBreakWithReference' => [
|
|
'<?php
|
|
$a = 1;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = 2;
|
|
break;
|
|
}
|
|
|
|
$a = 3;
|
|
}
|
|
|
|
echo $a;',
|
|
],
|
|
'loopReassignedInIfAndBreakWithReferenceAfter' => [
|
|
'<?php
|
|
$a = 5;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = 7;
|
|
break;
|
|
}
|
|
|
|
$a = 3;
|
|
}
|
|
|
|
echo $a;',
|
|
],
|
|
'loopSetIfNullWithBreakAndReference' => [
|
|
'<?php
|
|
$a = null;
|
|
|
|
while (rand(0, 1)) {
|
|
if ($a !== null) {
|
|
$a = 4;
|
|
break;
|
|
}
|
|
|
|
$a = 5;
|
|
}
|
|
|
|
echo $a;',
|
|
],
|
|
'loopSetIfNullWithContinueAndReference' => [
|
|
'<?php
|
|
$a = null;
|
|
|
|
while (rand(0, 1)) {
|
|
if ($a !== null) {
|
|
$a = 4;
|
|
continue;
|
|
}
|
|
|
|
$a = 5;
|
|
}
|
|
|
|
echo $a;',
|
|
],
|
|
'loopAssignmentAfterReferenceSimple' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
echo $a;
|
|
$a = 1;
|
|
}',
|
|
],
|
|
'loopAssignmentAfterReferenceWithContinue' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
echo $a;
|
|
$a = 1;
|
|
continue;
|
|
}',
|
|
],
|
|
'loopAssignmentAfterReferenceWithConditionalAssignmentWithContinue' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
echo $a;
|
|
|
|
if (rand(0, 1)) {
|
|
$a = 1;
|
|
}
|
|
|
|
continue;
|
|
}',
|
|
],
|
|
'loopAssignmentAfterReferenceWithContinueInIf' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
echo $a;
|
|
|
|
if (rand(0, 1)) {
|
|
$a = 1;
|
|
continue;
|
|
}
|
|
}',
|
|
],
|
|
'loopAssignmentAfterReferenceWithContinueInSwitch' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
switch (rand(0, 1)) {
|
|
case 0:
|
|
$a = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
echo $a;',
|
|
],
|
|
'loopAssignmentAfterReferenceWithContinueInSwitch2' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
switch (rand(0, 1)) {
|
|
case 0:
|
|
$a = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
echo $a;',
|
|
],
|
|
'listVarAssignmentInIf' => [
|
|
'<?php
|
|
$a = "a";
|
|
$b = "b";
|
|
|
|
if (rand(0, 1)) {
|
|
list($a, $b) = explode(".", "c.d");
|
|
}
|
|
|
|
echo $a;
|
|
echo $b;',
|
|
],
|
|
'varCheckAfterNestedAssignmentAndBreak' => [
|
|
'<?php
|
|
$a = false;
|
|
|
|
if (rand(0, 1)) {
|
|
while (rand(0, 1)) {
|
|
$a = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($a) {}',
|
|
],
|
|
'varCheckAfterNestedAssignmentAndBreakInIf' => [
|
|
'<?php
|
|
$a = false;
|
|
|
|
if (rand(0, 1)) {
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($a) {}',
|
|
],
|
|
'breakInSwitchStatementIf' => [
|
|
'<?php
|
|
$a = 0;
|
|
|
|
while (rand(0, 1)) {
|
|
switch (rand(0, 1)) {
|
|
default:
|
|
echo $a;
|
|
|
|
if (rand(0, 1)) {
|
|
$a = 5;
|
|
break;
|
|
}
|
|
}
|
|
}',
|
|
],
|
|
'breakInSwitchStatementIfWithSecondCase' => [
|
|
'<?php
|
|
$a = 0;
|
|
|
|
while (rand(0, 1)) {
|
|
switch (rand(0, 1)) {
|
|
case 0:
|
|
$a = 1;
|
|
break;
|
|
|
|
default:
|
|
echo $a;
|
|
|
|
if (rand(0, 1)) {
|
|
$a = 5;
|
|
break;
|
|
}
|
|
}
|
|
}',
|
|
],
|
|
'echoVarWithAdditionOp' => [
|
|
'<?php
|
|
function foo(int $i) : void {
|
|
echo $i;
|
|
}
|
|
$a = 5;
|
|
foo($a += 1);',
|
|
],
|
|
'echoVarWithIncrement' => [
|
|
'<?php
|
|
function foo(int $i) : void {
|
|
echo $i;
|
|
}
|
|
$a = 5;
|
|
foo(++$a);',
|
|
],
|
|
'afterMethodExistsCheck' => [
|
|
'<?php
|
|
class A {
|
|
/**
|
|
* @param array<string, string> $options
|
|
*/
|
|
public function __construct(array $options) {
|
|
$this->setOptions($options);
|
|
}
|
|
|
|
/**
|
|
* @param array<string, string> $options
|
|
*/
|
|
protected function setOptions(array $options): void
|
|
{
|
|
foreach ($options as $key => $value) {
|
|
$normalized = ucfirst($key);
|
|
$method = "set" . $normalized;
|
|
|
|
if (method_exists($this, $method)) {
|
|
$this->$method($value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
new A(["bar" => "bat"]);',
|
|
],
|
|
'instanceofVarUse' => [
|
|
'<?php
|
|
interface Foo { }
|
|
|
|
function returnFoo(): Foo { return new class implements Foo { }; }
|
|
|
|
$interface = Foo::class;
|
|
|
|
if (returnFoo() instanceof $interface) {
|
|
exit;
|
|
}',
|
|
],
|
|
'usedVariableInDoWhile' => [
|
|
'<?php
|
|
$i = 5;
|
|
do {
|
|
echo "hello";
|
|
} while (--$i > 0);
|
|
echo $i;',
|
|
],
|
|
'callableReferencesItself' => [
|
|
'<?php
|
|
/** @psalm-suppress UnusedParam */
|
|
function foo(callable $c) : void {}
|
|
$listener = function () use (&$listener) : void {
|
|
/** @psalm-suppress MixedArgument */
|
|
foo($listener);
|
|
};
|
|
foo($listener);',
|
|
],
|
|
'newVariableConstructor' => [
|
|
'<?php
|
|
/**
|
|
* @param class-string<ArrayObject> $type
|
|
*/
|
|
function bar(string $type) : ArrayObject {
|
|
$data = [["foo"], ["bar"]];
|
|
|
|
return new $type($data[0]);
|
|
}',
|
|
],
|
|
'byRefVariableUsedInAddition' => [
|
|
'<?php
|
|
$i = 0;
|
|
$a = function () use (&$i) : void {
|
|
$i = 1;
|
|
};
|
|
$a();',
|
|
],
|
|
'superGlobalInFunction' => [
|
|
'<?php
|
|
function example1() : void {
|
|
$_SESSION = [];
|
|
}
|
|
function example2() : int {
|
|
return (int) $_SESSION["str"];
|
|
}',
|
|
],
|
|
'usedInArray' => [
|
|
'<?php
|
|
/**
|
|
* @psalm-suppress MixedMethodCall
|
|
* @psalm-suppress MissingParamType
|
|
*/
|
|
function foo($a) : void {
|
|
$b = "b";
|
|
$a->bar([$b]);
|
|
}',
|
|
],
|
|
'paramUsedInsideLoop' => [
|
|
'<?php
|
|
function foo(int $counter) : void {
|
|
foreach ([1, 2, 3] as $_) {
|
|
echo ($counter = $counter + 1);
|
|
echo rand(0, 1) ? 1 : 0;
|
|
}
|
|
}',
|
|
],
|
|
'useParamInsideIfLoop' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = 1;
|
|
|
|
if (rand(0, 1)) {
|
|
while (rand(0, 1)) {
|
|
$a = 2;
|
|
}
|
|
}
|
|
|
|
echo $a;
|
|
}',
|
|
],
|
|
'useVariableInsideTry' => [
|
|
'<?php
|
|
$foo = false;
|
|
|
|
try {
|
|
if (rand(0, 1)) {
|
|
throw new \Exception("bad");
|
|
}
|
|
|
|
$foo = rand(0, 1);
|
|
|
|
if ($foo) {}
|
|
} catch (Exception $e) {}
|
|
|
|
if ($foo) {}',
|
|
],
|
|
'useTryAssignedVariableInsideFinally' => [
|
|
'<?php
|
|
$var = "";
|
|
try {
|
|
if (rand(0, 1)) {
|
|
throw new \Exception();
|
|
}
|
|
$var = "hello";
|
|
} finally {
|
|
if ($var !== "") {
|
|
echo $var;
|
|
}
|
|
}',
|
|
],
|
|
'useTryAssignedVariableInFinallyWhenCatchExits' => [
|
|
'<?php
|
|
/**
|
|
* @return resource
|
|
*/
|
|
function getStream() {
|
|
throw new \Exception();
|
|
}
|
|
|
|
$stream = null;
|
|
|
|
try {
|
|
$stream = getStream();
|
|
\file_put_contents("./foobar", $stream);
|
|
} catch (\Exception $e) {
|
|
throw new \Exception("Something went wrong");
|
|
} finally {
|
|
\fclose($stream);
|
|
}',
|
|
],
|
|
'varUsedInloop' => [
|
|
'<?php
|
|
class A {
|
|
public static function getA() : ?A {
|
|
return rand(0, 1) ? new A : null;
|
|
}
|
|
}
|
|
|
|
function foo(?A $a) : void {
|
|
while ($a) {
|
|
echo get_class($a);
|
|
$a = A::getA();
|
|
}
|
|
}',
|
|
],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @return array<string,array{string,error_message:string}>
|
|
*/
|
|
public function providerInvalidCodeParse()
|
|
{
|
|
return [
|
|
'simpleUnusedVariable' => [
|
|
'<?php
|
|
$a = 5;
|
|
$b = [];
|
|
echo $a;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedVarWithAdditionOp' => [
|
|
'<?php
|
|
$a = 5;
|
|
$a += 1;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedVarWithConditionalAdditionOp' => [
|
|
'<?php
|
|
$a = 5;
|
|
if (rand(0, 1)) {
|
|
$a += 1;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedVarWithConditionalAddition' => [
|
|
'<?php
|
|
$a = 5;
|
|
if (rand(0, 1)) {
|
|
$a = $a + 1;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedVarWithIncrement' => [
|
|
'<?php
|
|
$a = 5;
|
|
$a++;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedVarWithConditionalIncrement' => [
|
|
'<?php
|
|
$a = 5;
|
|
if (rand(0, 1)) {
|
|
$a++;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'ifInBothBranchesWithoutReference' => [
|
|
'<?php
|
|
$a = 5;
|
|
if (rand(0, 1)) {
|
|
$b = "hello";
|
|
} else {
|
|
$b = "goodbye";
|
|
}
|
|
echo $a;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'varInNestedAssignmentWithoutReference' => [
|
|
'<?php
|
|
if (rand(0, 1)) {
|
|
$a = "foo";
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'varInSecondNestedAssignmentWithoutReference' => [
|
|
'<?php
|
|
if (rand(0, 1)) {
|
|
$a = "foo";
|
|
echo $a;
|
|
}
|
|
|
|
if (rand(0, 1)) {
|
|
$a = "foo";
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'varReassignedInBothBranchesOfIf' => [
|
|
'<?php
|
|
$a = "foo";
|
|
|
|
if (rand(0, 1)) {
|
|
$a = "bar";
|
|
} else {
|
|
$a = "bat";
|
|
}
|
|
|
|
echo $a;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'varReassignedInNestedBranchesOfIf' => [
|
|
'<?php
|
|
$a = "foo";
|
|
|
|
if (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = "bar";
|
|
} else {
|
|
$a = "bat";
|
|
}
|
|
} else {
|
|
$a = "bang";
|
|
}
|
|
|
|
echo $a;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'ifVarReassignedInBranchWithNoUse' => [
|
|
'<?php
|
|
$a = true;
|
|
|
|
if (rand(0, 1)) {
|
|
$a = false;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'elseVarReassignedInBranchAndNoReference' => [
|
|
'<?php
|
|
$a = true;
|
|
|
|
if (rand(0, 1)) {
|
|
// do nothing
|
|
} else {
|
|
$a = false;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'switchVarReassignedInBranch' => [
|
|
'<?php
|
|
$a = false;
|
|
|
|
switch (rand(0, 2)) {
|
|
case 0:
|
|
$a = true;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'switchVarReassignedInBranchWithDefault' => [
|
|
'<?php
|
|
$a = false;
|
|
|
|
switch (rand(0, 2)) {
|
|
case 0:
|
|
$a = true;
|
|
break;
|
|
|
|
default:
|
|
$a = false;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'switchVarReassignedInAllBranches' => [
|
|
'<?php
|
|
$a = false;
|
|
|
|
switch (rand(0, 2)) {
|
|
case 0:
|
|
$a = true;
|
|
break;
|
|
|
|
default:
|
|
$a = false;
|
|
}
|
|
|
|
if ($a) {
|
|
echo "cool";
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedListVar' => [
|
|
'<?php
|
|
list($a, $b) = explode(" ", "hello world");
|
|
echo $a;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedPreForVar' => [
|
|
'<?php
|
|
$i = 0;
|
|
|
|
for ($i = 0; $i < 10; $i++) {
|
|
echo $i;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedIfInReturnBlock' => [
|
|
'<?php
|
|
$i = rand(0, 1);
|
|
|
|
foreach ([1, 2, 3] as $a) {
|
|
if ($a % 2) {
|
|
$i = 7;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if ($i) {}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedIfVarInBranch' => [
|
|
'<?php
|
|
if (rand(0, 1)) {
|
|
|
|
} elseif (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = "foo";
|
|
} else {
|
|
$a = "bar";
|
|
echo $a;
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'throwWithMessageCallAndAssignmentAndNoReference' => [
|
|
'<?php
|
|
function dangerous(): string {
|
|
if (rand(0, 1)) {
|
|
throw new \Exception("bad");
|
|
}
|
|
|
|
return "hello";
|
|
}
|
|
|
|
function callDangerous(): void {
|
|
$s = null;
|
|
|
|
try {
|
|
$s = dangerous();
|
|
} catch (Exception $e) {
|
|
echo $e->getMessage();
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'throwWithMessageCallAndAssignmentInCatchAndNoReference' => [
|
|
'<?php
|
|
function dangerous(): string {
|
|
if (rand(0, 1)) {
|
|
throw new \Exception("bad");
|
|
}
|
|
|
|
return "hello";
|
|
}
|
|
|
|
function callDangerous(): void {
|
|
$s = null;
|
|
|
|
try {
|
|
dangerous();
|
|
} catch (Exception $e) {
|
|
echo $e->getMessage();
|
|
$s = "hello";
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'throwWithMessageCallAndNestedAssignmentInTryAndCatchAndNoReference' => [
|
|
'<?php
|
|
function dangerous(): string {
|
|
if (rand(0, 1)) {
|
|
throw new \Exception("bad");
|
|
}
|
|
|
|
return "hello";
|
|
}
|
|
|
|
function callDangerous(): void {
|
|
$s = null;
|
|
|
|
if (rand(0, 1)) {
|
|
$s = "hello";
|
|
} else {
|
|
try {
|
|
$t = dangerous();
|
|
} catch (Exception $e) {
|
|
echo $e->getMessage();
|
|
$t = "hello";
|
|
}
|
|
|
|
if ($t) {
|
|
$s = $t;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'throwWithReturnInOneCatchAndNoReference' => [
|
|
'<?php
|
|
class E1 extends Exception {}
|
|
|
|
function dangerous(): void {
|
|
if (rand(0, 1)) {
|
|
throw new \Exception("bad");
|
|
}
|
|
}
|
|
|
|
function callDangerous(): void {
|
|
try {
|
|
dangerous();
|
|
$s = true;
|
|
} catch (E1 $e) {
|
|
echo $e->getMessage();
|
|
$s = false;
|
|
} catch (Exception $e) {
|
|
return;
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopTypeChangedInIfWithoutReference' => [
|
|
'<?php
|
|
$a = false;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = true;
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopTypeChangedInIfAndContinueWithoutReference' => [
|
|
'<?php
|
|
$a = false;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = true;
|
|
continue;
|
|
}
|
|
|
|
$a = false;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopReassignedInIfAndContinueWithoutReferenceAfter' => [
|
|
'<?php
|
|
$a = 5;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = 7;
|
|
continue;
|
|
}
|
|
|
|
$a = 3;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopReassignedInIfAndContinueWithoutReference' => [
|
|
'<?php
|
|
$a = 3;
|
|
|
|
echo $a;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = 5;
|
|
continue;
|
|
}
|
|
|
|
$a = 3;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'unusedConditionalCode' => [
|
|
'<?php
|
|
$a = 5;
|
|
if (rand(0, 1)) {
|
|
$a = $a + 5;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'varDefinedInIfWithoutReference' => [
|
|
'<?php
|
|
$a = 5;
|
|
if (rand(0, 1)) {
|
|
$b = "hello";
|
|
} else {
|
|
$b = "goodbye";
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'SKIPPED-byrefInForeachLoopWithoutReference' => [
|
|
'<?php
|
|
$a = [1, 2, 3];
|
|
foreach ($a as &$b) {
|
|
$b = $b + 1;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopSetIfNullWithBreakWithoutReference' => [
|
|
'<?php
|
|
$a = null;
|
|
|
|
while (rand(0, 1)) {
|
|
if ($a !== null) {
|
|
$a = 4;
|
|
break;
|
|
}
|
|
|
|
$a = 5;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopSetIfNullWithBreakWithoutReference2' => [
|
|
'<?php
|
|
$a = null;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = 4;
|
|
break;
|
|
}
|
|
|
|
$a = 5;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopSetIfNullWithContinueWithoutReference' => [
|
|
'<?php
|
|
$a = null;
|
|
|
|
while (rand(0, 1)) {
|
|
if (rand(0, 1)) {
|
|
$a = 4;
|
|
continue;
|
|
}
|
|
|
|
$a = 5;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopAssignmentAfterReferenceWithBreak' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
echo $a;
|
|
$a = 1;
|
|
break;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'loopAssignmentAfterReferenceWithBreakInIf' => [
|
|
'<?php
|
|
$a = 0;
|
|
while (rand(0, 1)) {
|
|
echo $a;
|
|
|
|
if (rand(0, 1)) {
|
|
$a = 1;
|
|
break;
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'switchVarConditionalAssignmentWithoutReference' => [
|
|
'<?php
|
|
switch (rand(0, 4)) {
|
|
case 0:
|
|
if (rand(0, 1)) {
|
|
$a = 0;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
$a = 1;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'switchInIf' => [
|
|
'<?php
|
|
$a = 0;
|
|
|
|
if (rand(0, 1)) {
|
|
switch (rand(0, 4)) {
|
|
case 0:
|
|
$a = 3;
|
|
break;
|
|
|
|
default:
|
|
$a = 3;
|
|
}
|
|
} else {
|
|
$a = 6;
|
|
}
|
|
|
|
echo $a;',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'reusedKeyVar' => [
|
|
'<?php
|
|
$key = "a";
|
|
echo $key;
|
|
|
|
$arr = ["foo" => "foo.foo"];
|
|
|
|
foreach ($arr as $key => $v) {
|
|
list($key) = explode(".", $v);
|
|
echo $key;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVarBeforeTryInsideForeach' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$unused = 1;
|
|
|
|
while (rand(0, 1)) {
|
|
try {} catch (\Exception $e) {}
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableInsideIfLoop' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = 1;
|
|
|
|
if (rand(0, 1)) {
|
|
while (rand(0, 1)) {
|
|
$a = 2;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableInsideIfElseLoop' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = 1;
|
|
|
|
if (rand(0, 1)) {
|
|
} else {
|
|
while (rand(0, 1)) {
|
|
$a = 2;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableInsideIfElseifLoop' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = 1;
|
|
|
|
if (rand(0, 1)) {
|
|
} elseif (rand(0, 1)) {
|
|
while (rand(0, 1)) {
|
|
$a = 2;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableInsideIfLoopWithEchoInside' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = 1;
|
|
|
|
if (rand(0, 1)) {
|
|
while (rand(0, 1)) {
|
|
$a = 2;
|
|
echo $a;
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableInsideLoopAfterAssignment' => [
|
|
'<?php
|
|
function foo() : void {
|
|
foreach ([1, 2, 3] as $i) {
|
|
$i = $i;
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableInsideLoopAfterAssignmentWithAddition' => [
|
|
'<?php
|
|
function foo() : void {
|
|
foreach ([1, 2, 3] as $i) {
|
|
$i = $i + 1;
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableInsideLoopCalledInFunction' => [
|
|
'<?php
|
|
function foo(int $s) : int {
|
|
return $s;
|
|
}
|
|
|
|
function bar() : void {
|
|
foreach ([1, 2, 3] as $i) {
|
|
$i = foo($i);
|
|
}
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableReassignedInIfFollowedByTryInsideForLoop' => [
|
|
'<?php
|
|
$user_id = 0;
|
|
$user = null;
|
|
|
|
if (rand(0, 1)) {
|
|
$user_id = rand(0, 1);
|
|
$user = $user_id;
|
|
}
|
|
|
|
if ($user) {
|
|
$a = 0;
|
|
for ($i = 1; $i <= 10; $i++) {
|
|
$a += $i;
|
|
try {} catch (\Exception $e) {}
|
|
}
|
|
echo $i;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedVariableReassignedInIfFollowedByTryInsideForeachLoop' => [
|
|
'<?php
|
|
$user_id = 0;
|
|
$user = null;
|
|
|
|
if (rand(0, 1)) {
|
|
$user_id = rand(0, 1);
|
|
$user = $user_id;
|
|
}
|
|
|
|
if ($user) {
|
|
$a = 0;
|
|
foreach ([1, 2, 3] as $i) {
|
|
$a += $i;
|
|
try {} catch (\Exception $e) {}
|
|
}
|
|
echo $i;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUselessArrayAssignment' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = [];
|
|
$a[0] = 1;
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectUnusedSecondAssignmentBeforeTry' => [
|
|
'<?php
|
|
$a = [1, 2, 3];
|
|
echo($a[0]);
|
|
$a = [4, 5, 6];
|
|
|
|
try {
|
|
// something
|
|
} catch (\Throwable $t) {
|
|
// something else
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
'detectRedundancyAfterLoopWithContinue' => [
|
|
'<?php
|
|
$gap = null;
|
|
|
|
foreach ([1, 2, 3] as $_) {
|
|
if (rand(0, 1)) {
|
|
continue;
|
|
}
|
|
|
|
$gap = "asa";
|
|
throw new \Exception($gap);
|
|
}',
|
|
'error_message' => 'UnusedVariable',
|
|
],
|
|
];
|
|
}
|
|
}
|