psalm/tests/IntRangeTest.php

<?php
namespace Psalm\Tests;

class IntRangeTest 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 [
            'intRangeContained' => [
                '<?php
                    /**
                     * @param int<1,12> $a
                     * @return int<-1, max>
                     */
                    function scope(int $a){
                        return $a;
                    }',
            ],
            'positiveIntRange' => [
                '<?php
                    /**
                     * @param int<1,12> $a
                     * @return positive-int
                     */
                    function scope(int $a){
                        return $a;
                    }',
            ],
            'intRangeToInt' => [
                '<?php
                    /**
                     * @param int<1,12> $a
                     * @return int
                     */
                    function scope(int $a){
                        return $a;
                    }',
            ],
            'intReduced' => [
                '<?php
                    function getInt(): int{return 0;}
                    $a = getInt();
                    assert($a >= 500);
                    assert($a < 5000)',
                'assertions' => [
                    '$a===' => 'int<500, 4999>'
                ]
            ],
        ];
    }

    /**
     * @return iterable<string,array{string,error_message:string,1?:string[],2?:bool,3?:string}>
     */
    public function providerInvalidCodeParse(): iterable
    {
        return [
            'intRangeNotContained' => [
                '<?php
                    /**
                     * @param int<1,12> $a
                     * @return int<-1, 11>
                     * @psalm-suppress InvalidReturnStatement
                     */
                    function scope(int $a){
                        return $a;
                    }',
                'error_message' => 'InvalidReturnType',
            ],
        ];
    }
}