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psalm/tests/MatchTest.php

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<?php
namespace Psalm\Tests;
class MatchTest extends TestCase
{
use Traits\InvalidCodeAnalysisTestTrait;
use Traits\ValidCodeAnalysisTestTrait;
/**
* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?:string[]}>
*/
public function providerValidCodeParse(): iterable
{
return [
'switchTruthy' => [
'<?php
class A {
public ?string $a = null;
public ?string $b = null;
}
function f(A $obj): string {
return match (true) {
$obj->a !== null => $obj->a,
$obj->b !== null => $obj->b,
default => throw new \InvalidArgumentException("$obj->a or $obj->b must be set"),
};
}',
[],
[],
'8.0'
],
'defaultAboveCase' => [
'<?php
function foo(string $a) : string {
return match ($a) {
"a" => "hello",
default => "yellow",
"b" => "goodbye",
};
}',
[],
[],
'8.0'
],
'allMatchedNoRedundantCondition' => [
'<?php
function foo() : string {
$a = rand(0, 1) ? "a" : "b";
return match ($a) {
"a" => "hello",
"b" => "goodbye",
};
}',
[],
[],
'8.0'
],
'getClassWithMethod' => [
'<?php
interface Foo {}
class Bar implements Foo
{
public function hello(): string
{
return "a";
}
}
function foo(Foo $value): string {
return match (get_class($value)) {
Bar::class => $value->hello(),
default => "b",
};
}',
[],
[],
'8.0'
],
];
}
/**
* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
*/
public function providerInvalidCodeParse(): iterable
{
return [
'getClassArgWrongClass' => [
'<?php
class A {}
class B {}
$a = rand(0, 10) ? new A(): new B();
$a = match (get_class($a)) {
A::class => $a->barBar(),
};',
'error_message' => 'UndefinedMethod',
[],
false,
'8.0'
],
'getClassMissingClass' => [
'<?php
class A {}
class B {}
$a = rand(0, 10) ? new A(): new B();
$a = match (get_class($a)) {
C::class => 5,
};',
'error_message' => 'UndefinedClass',
[],
false,
'8.0'
],
'allMatchedDefaultImpossible' => [
'<?php
function foo() : string {
$a = rand(0, 1) ? "a" : "b";
return match ($a) {
"a" => "hello",
"b" => "goodbye",
default => "impossible",
};
}',
'error_message' => 'TypeDoesNotContainType',
[],
false,
'8.0'
],
'allMatchedAnotherImpossible' => [
'<?php
function foo() : string {
$a = rand(0, 1) ? "a" : "b";
return match ($a) {
"a" => "hello",
"b" => "goodbye",
"c" => "impossible",
};
}',
'error_message' => 'TypeDoesNotContainType',
[],
false,
'8.0'
],
2020-09-01 04:59:47 +02:00
'notAllEnumsMet' => [
'<?php
/**
* @param "foo"|"bar" $foo
*/
function foo(string $foo): string {
return match ($foo) {
"foo" => "foo",
};
}',
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'error_message' => 'UnhandledMatchCondition',
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[],
false,
'8.0',
],
'notAllConstEnumsMet' => [
'<?php
class Airport {
const JFK = "jfk";
const LHR = "lhr";
const LGA = "lga";
/**
* @param self::* $airport
*/
public static function getName(string $airport): string {
return match ($airport) {
self::JFK => "John F Kennedy Airport",
self::LHR => "London Heathrow",
};
}
}',
'error_message' => 'UnhandledMatchCondition',
[],
false,
'8.0',
],
'paradoxWithDuplicateValue' => [
'<?php
function foo(int $i) : void {
echo match ($i) {
1 => 0,
1 => 1,
};
};',
'error_message' => 'ParadoxicalCondition',
[],
false,
'8.0',
],
'noCrashWithEmptyMatch' => [
'<?php
function foo(int $i) {
match ($i) {
};
}',
'error_message' => 'UnhandledMatchCondition',
[],
false,
'8.0',
],
'exitIsLikeThrow' => [
'<?php
/**
* @param 1|2|3 $i
*/
function foo(int $i): void {
$a = match ($i) {
1 => exit(),
2, 3 => $i,
};
$a === "aaa";
}',
'error_message' => 'DocblockTypeContradiction',
[],
false,
'8.0',
],
'matchTrueImpossible' => [
'<?php
$foo = new \stdClass();
$a = match (true) {
$foo instanceof \stdClass => 1,
$foo instanceof \Exception => 1,
};',
'error_message' => 'TypeDoesNotContainType',
[],
false,
'8.0',
],
];
}
}