ExpressionTest.php

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<?php
class ExpressionTest extends MediaWikiTestCase {
 
    protected $parser;
 
    protected function setUp() {
        parent::setUp();
        $this->parser = new ExprParser();
    }
 
    function testExpression( $input, $expected ) {
        $this->assertEquals(
            $expected,
            $this->parser->doExpression( $input )
        );
    }
 
    function provideExpressions() {
        return [
            [ '1 or 0', '1' ],
            [ 'not (1 and 0)', '1' ],
            [ 'not 0', '1' ],
            [ '4 < 5', '1' ],
            [ '-5 < 2', '1' ],
            [ '-2 <= -2', '1' ],
            [ '4 > 3', '1' ],
            [ '4 > -3', '1' ],
            [ '5 >= 2', '1' ],
            [ '2 >= 2', '1' ],
            [ '1 != 2', '1' ],
            [ '-4 * -4 = 4 * 4', '1' ],
            [ 'not (1 != 1)', '1' ],
            [ '1 + 1', '2' ],
            [ '-1 + 1', '0' ],
            [ '+1 + 1', '2' ],
            [ '4 * 4', '16' ],
            [ '(1/3) * 3', '1' ],
            [ '3 / 1.5', '2' ],
            [ '3 / 0.2', '15' ],
            [ '3 / ( 2.0 * 0.1 )', '15' ],
            [ '3 / ( 2.0 / 10 )', '15' ],
            [ '3 / (- 0.2 )', '-15' ],
            [ '3 / abs( 0.2 )', '15' ],
            [ '3 mod 2', '1' ],
            [ '1e4', '10000' ],
            [ '1e-2', '0.01' ],
            [ '4.0 round 0', '4' ],
            [ 'ceil 4', '4' ],
            [ 'floor 4', '4' ],
            [ '4.5 round 0', '5' ],
            [ '4.2 round 0', '4' ],
            [ '-4.2 round 0', '-4' ],
            [ '-4.5 round 0', '-5' ],
            [ '-2.0 round 0', '-2' ],
            [ 'ceil -3', '-3' ],
            [ 'floor -6.0', '-6' ],
            [ 'ceil 4.2', '5' ],
            [ 'ceil -4.5', '-4' ],
            [ 'floor -4.5', '-5' ],
            [ 'abs(-2)', '2' ],
            [ 'ln(exp(1))', '1' ],
            [ 'trunc(4.5)', '4' ],
            [ 'trunc(-4.5)', '-4' ],
            [ '123 fmod (2^64-1)', '123' ],
            [ '5.7 mod 1.3', '0' ],
            [ '5.7 fmod 1.3', '0.5' ],
        ];
    }
}