MWExceptionHandlerTest.php

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<?php
class MWExceptionHandlerTest extends MediaWikiTestCase {

    public function testGetRedactedTrace() {
        $refvar = 'value';
        try {
            $array = array( 'a', 'b' );
            $object = new StdClass();
            self::helperThrowAnException( $array, $object, $refvar );
        } catch ( Exception $e ) {
        }

        # Make sure our stack trace contains an array and an object passed to
        # some function in the stacktrace. Else, we can not assert the trace
        # redaction achieved its job.
        $trace = $e->getTrace();
        $hasObject = false;
        $hasArray = false;
        foreach ( $trace as $frame ) {
            if ( !isset( $frame['args'] ) ) {
                continue;
            }
            foreach ( $frame['args'] as $arg ) {
                $hasObject = $hasObject || is_object( $arg );
                $hasArray = $hasArray || is_array( $arg );
            }

            if ( $hasObject && $hasArray ) {
                break;
            }
        }
        $this->assertTrue( $hasObject,
            "The stacktrace must have a function having an object has parameter" );
        $this->assertTrue( $hasArray,
            "The stacktrace must have a function having an array has parameter" );

        # Now we redact the trace.. and make sure no function arguments are
        # arrays or objects.
        $redacted = MWExceptionHandler::getRedactedTrace( $e );

        foreach ( $redacted as $frame ) {
            if ( !isset( $frame['args'] ) ) {
                continue;
            }
            foreach ( $frame['args'] as $arg ) {
                $this->assertNotInternalType( 'array', $arg );
                $this->assertNotInternalType( 'object', $arg );
            }
        }

        $this->assertEquals( 'value', $refvar, 'Ensuring reference variable wasn\'t changed' );
    }

    protected static function helperThrowAnException( $a, $b, &$c ) {
        throw new Exception();
    }
}