mirror of
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324 lines
10 KiB
PHP
324 lines
10 KiB
PHP
<?php
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namespace Psalm\Tests;
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class TryCatchTest extends TestCase
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{
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use Traits\ValidCodeAnalysisTestTrait;
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use Traits\InvalidCodeAnalysisTestTrait;
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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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'addThrowableInterfaceType' => [
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'<?php
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interface CustomThrowable {}
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class CustomException extends Exception implements CustomThrowable {}
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/** @psalm-suppress InvalidCatch */
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try {
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throw new CustomException("Bad");
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} catch (CustomThrowable $e) {
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echo $e->getMessage();
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}',
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],
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'rethrowInterfaceExceptionWithoutInvalidThrow' => [
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'<?php
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interface CustomThrowable {}
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class CustomException extends Exception implements CustomThrowable {}
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/** @psalm-suppress InvalidCatch */
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try {
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throw new CustomException("Bad");
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} catch (CustomThrowable $e) {
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throw $e;
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}',
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],
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'tryCatchVar' => [
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'<?php
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try {
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$worked = true;
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}
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catch (\Exception $e) {
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$worked = false;
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}',
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'assertions' => [
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'$worked' => 'bool',
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],
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],
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'alwaysReturnsBecauseCatchDoesNothing' => [
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'<?php
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function throws(): void {
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throw new Exception("bad");
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}
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function foo(): string {
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try {
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throws();
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} catch (Exception $e) {
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// do nothing
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}
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return "hello";
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}',
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],
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'wheresTheCatch' => [
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'<?php
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function foo() : bool {
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try {
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return true;
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} finally {
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}
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}
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function bar() : bool {
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try {
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// do nothing
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} finally {
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return true;
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}
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}',
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],
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'catchWithNoReturnButFinallyReturns' => [
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'<?php
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function foo() : bool {
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try {
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if (rand(0, 1)) throw new Exception("bad");
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} catch (Exception $e) {
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echo $e->getMessage();
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// do nothing here either
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} finally {
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return true;
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}
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}',
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],
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'stopAnalysisAfterBadTryIssue' => [
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'<?php
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$foo = true;
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try {
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$a->bar();
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} catch (\TypeError $e) {
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$foo = false;
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}
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if (!$foo) {}',
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'assertions' => [],
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'error_message' => [
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'UndefinedGlobalVariable' => \Psalm\Config::REPORT_INFO,
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'MixedMethodCall' => \Psalm\Config::REPORT_INFO,
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],
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],
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'issetAfterTryCatch' => [
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'<?php
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function test(): string {
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throw new Exception("bad");
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}
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try {
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$a = "foo";
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$var = test();
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} catch (Exception $e) {
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echo "bad";
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}
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if (isset($var)) {}
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echo $a;',
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],
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'issetAfterTryCatchWithCombinedType' => [
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'<?php
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function test(): string {
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throw new Exception("bad");
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}
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try {
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$a = "foo";
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$var = test();
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} catch (Exception $e) {
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$var = "bad";
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}
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if (isset($var)) {}
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echo $a;',
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],
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'noRedundantConditionsInFinally' => [
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'<?php
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function doThings(): void {}
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function message(): string { return "message"; }
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$errors = [];
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try {
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doThings();
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} catch (RuntimeException $e) {
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$errors["field"] = message();
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} catch (LengthException $e) {
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$errors[rand(0,1) ? "field" : "field2"] = message();
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} finally {
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if (!empty($errors)) {
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return $errors;
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}
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}',
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],
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'typeDoesNotContainTypeInCatch' => [
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'<?php
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function foo(bool $test, callable $bar): string {
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try {
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$bar();
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if ($test) {
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return "moo";
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}
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return "miau";
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} catch (\Exception $exception) {
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if ($test) {
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return "moo";
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}
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return "miau";
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}
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}',
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],
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'notAlwaysUndefinedVarInFinally' => [
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'<?php
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function maybeThrows() : void {
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if (rand(0, 1)) {
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throw new UnexpectedValueException();
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}
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}
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function doTry() : void {
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try {
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maybeThrows();
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return;
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} catch (Exception $exception) {
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throw $exception;
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} finally {
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if (isset($exception)) {
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echo "here";
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}
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}
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}',
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],
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'noReturnInsideCatch' => [
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'<?php
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/**
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* @return never-returns
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*/
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function example() : void {
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throw new Exception();
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}
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try {
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$str = "a";
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} catch (Exception $e) {
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example();
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}
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ord($str);',
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],
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'varSetInOnlyCatch' => [
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'<?php
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try {
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if (rand(0, 1)) {
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throw new \Exception("Gotcha!");
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}
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exit;
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} catch (\Exception $e) {
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$lastException = $e;
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}
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echo $lastException->getMessage();'
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],
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'varSetInOnlyCatchWithNull' => [
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'<?php
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$lastException = null;
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try {
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if (rand(0, 1)) {
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throw new \Exception("Gotcha!");
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}
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exit;
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} catch (\Exception $e) {
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$lastException = $e;
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}
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echo $lastException->getMessage();'
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],
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];
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}
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/**
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* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
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*/
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public function providerInvalidCodeParse()
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{
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return [
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'invalidCatchClass' => [
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'<?php
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class A {}
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try {
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$worked = true;
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}
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catch (A $e) {}',
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'error_message' => 'InvalidCatch',
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],
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'invalidThrowClass' => [
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'<?php
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class A {}
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throw new A();',
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'error_message' => 'InvalidThrow',
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],
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'theresNoCatch' => [
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'<?php
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function missing_return() : bool {
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try {
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} finally {
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}
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}',
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'error_message' => 'InvalidReturnType',
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],
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'catchDoesNotReturn' => [
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'<?php
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function missing_return() : bool {
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try {
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} finally {
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}
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}',
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'error_message' => 'InvalidReturnType',
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],
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'catchWithNoReturnAndFinallyDoesNotReturn' => [
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'<?php
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function foo() : bool {
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try {
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if (rand(0, 1)) throw new Exception("bad");
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return true;
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} catch (Exception $e) {
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echo $e->getMessage();
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// do nothing here either
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} finally {
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}
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}',
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'error_message' => 'InvalidReturnType',
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],
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'catchWithNoReturnAndNoFinally' => [
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'<?php
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function foo() : bool {
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try {
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if (rand(0, 1)) throw new Exception("bad");
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return true;
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} catch (Exception $e) {
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echo $e->getMessage();
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// do nothing here either
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}
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}',
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'error_message' => 'InvalidReturnType',
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],
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];
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}
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}
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