mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Scribunto
synced 2024-12-22 04:43:48 +00:00
102 lines
2.9 KiB
PHP
102 lines
2.9 KiB
PHP
<?php
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/**
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* @covers \MediaWiki\Extension\Scribunto\Engines\LuaSandbox\LuaSandboxEngine
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*/
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class LuaSandboxTest extends Scribunto_LuaEngineUnitTestBase {
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/** @inheritDoc */
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protected static $moduleName = 'SandboxTests';
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public static function suite( $className ) {
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return self::makeSuite( $className, 'LuaSandbox' );
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}
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protected function getTestModules() {
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return parent::getTestModules() + [
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'SandboxTests' => __DIR__ . '/SandboxTests.lua',
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];
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}
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public function testArgumentParsingTime() {
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$engine = $this->getEngine();
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$parser = $engine->getParser();
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$pp = $parser->getPreprocessor();
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$frame = $pp->newFrame();
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$parser->setHook( 'scribuntodelay', function () {
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$endTime = $this->getRuTime() + 0.5;
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// Waste CPU cycles
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do {
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$t = $this->getRuTime();
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} while ( $t < $endTime );
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return "ok";
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} );
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$this->extraModules['Module:TestArgumentParsingTime'] = '
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return {
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f = function ( frame )
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return frame.args[1]
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end,
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f2 = function ( frame )
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return frame:preprocess( "{{#invoke:TestArgumentParsingTime|f|}}" )
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end,
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f3 = function ( frame )
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return frame:preprocess( "{{#invoke:TestArgumentParsingTime|f|<scribuntodelay/>}}" )
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end,
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}
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';
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// Below we assert that the CPU time counted by LuaSandbox is $delta less than
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// the CPU time actually spent.
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// That way we can make sure that the time spent in the parser hook (which
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// must be more than delta) is not taken into account.
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$delta = 0.25;
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$u0 = $engine->getInterpreter()->getCPUUsage();
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$uTimeBefore = $this->getRuTime();
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$frame->expand(
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$pp->preprocessToObj(
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'{{#invoke:TestArgumentParsingTime|f|<scribuntodelay/>}}'
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)
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);
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$threshold = $this->getRuTime() - $uTimeBefore - $delta;
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$this->assertLessThan( $threshold, $engine->getInterpreter()->getCPUUsage() - $u0,
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'Argument access time was not counted'
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);
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$uTimeBefore = $this->getRuTime();
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$u0 = $engine->getInterpreter()->getCPUUsage();
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$frame->expand(
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$pp->preprocessToObj(
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'{{#invoke:TestArgumentParsingTime|f2|<scribuntodelay/>}}'
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)
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);
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$threshold = $this->getRuTime() - $uTimeBefore - $delta;
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$this->assertLessThan( $threshold, $engine->getInterpreter()->getCPUUsage() - $u0,
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'Unused arguments not counted in preprocess'
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);
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$uTimeBefore = $this->getRuTime();
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$u0 = $engine->getInterpreter()->getCPUUsage();
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$frame->expand(
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$pp->preprocessToObj(
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'{{#invoke:TestArgumentParsingTime|f3}}'
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)
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);
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$threshold = $this->getRuTime() - $uTimeBefore - $delta;
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// If the underlying node is extremely slow, this test might produce false positives
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$this->assertGreaterThan( $threshold, $engine->getInterpreter()->getCPUUsage() - $u0,
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'Recursive argument access time was counted'
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);
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}
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private function getRuTime() {
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// RUSAGE_SELF = 0
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$ru = getrusage( 0 );
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return $ru['ru_utime.tv_sec'] + $ru['ru_utime.tv_usec'] / 1e6 +
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$ru['ru_stime.tv_sec'] + $ru['ru_stime.tv_usec'] / 1e6;
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}
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}
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