HTML; $doc = DOMCompat::newDocument( true ); $doc->loadHTML( $html ); $trace = []; $traverser = new DOMTraverser(); $traverser->addHandler( $nodeName, $callback ); $traverser->addHandler( null, static function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) use ( &$trace ) { if ( $node instanceof Element && $node->hasAttribute( 'id' ) ) { $trace[] = $node->getAttribute( 'id' ); } return true; } ); $traverser->traverse( $env, $doc->documentElement, [], true, null ); $this->assertSame( $expectedTrace, $trace ); } public function provideTraverse() { $basicEnv = new MockEnv( [] ); $expectError = $this->getMockBuilder( MockEnv::class ) ->setConstructorArgs( [ [] ] ) ->onlyMethods( [ 'log' ] ) ->getMock(); $expectError->expects( $this->atLeastOnce() ) ->method( 'log' ) ->willReturnCallback( function ( $prefix ) { $this->assertSame( 'error', $prefix ); } ); $dontExpectError = $this->getMockBuilder( MockEnv::class ) ->setConstructorArgs( [ [] ] ) ->onlyMethods( [ 'log' ] ) ->getMock(); $dontExpectError->expects( $this->never() ) ->method( 'log' ); return [ 'basic' => [ 'callback' => function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) use ( $basicEnv ) { $this->assertSame( $basicEnv, $env ); $this->assertTrue( $atTopLevel ); return true; }, 'nodeName' => null, 'env' => $basicEnv, 'expectedTrace' => [ 'x1', 'x1_1', 'x1_2', 'x1_2_1', 'x1_2_2', 'x1_3', 'x2', 'x2_1' ], ], 'return true' => [ 'callback' => static function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) { return true; }, 'nodeName' => null, 'env' => $basicEnv, 'expectedTrace' => [ 'x1', 'x1_1', 'x1_2', 'x1_2_1', 'x1_2_2', 'x1_3', 'x2', 'x2_1' ], ], 'return first child' => [ 'callback' => static function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) { if ( $node instanceof Element && $node->getAttribute( 'id' ) === 'x1_2' ) { return $node->firstChild; } return true; }, 'nodeName' => null, 'env' => $basicEnv, 'expectedTrace' => [ 'x1', 'x1_1', 'x1_2_1', 'x1_2_2', 'x2', 'x2_1' ], ], 'return next sibling' => [ 'callback' => static function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) { if ( $node instanceof Element && $node->getAttribute( 'id' ) === 'x1_2' ) { return $node->nextSibling; } return true; }, 'nodeName' => null, 'env' => $basicEnv, 'expectedTrace' => [ 'x1', 'x1_1', 'x1_3', 'x2', 'x2_1' ], ], 'return null' => [ 'callback' => static function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) { if ( $node instanceof Element && $node->getAttribute( 'id' ) === 'x1_2' ) { return null; } return true; }, 'nodeName' => null, 'env' => $basicEnv, 'expectedTrace' => [ 'x1', 'x1_1', 'x2', 'x2_1' ], ], 'return another node' => [ 'callback' => static function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) { if ( $node instanceof Element && $node->getAttribute( 'id' ) === 'x1_2' ) { $newNode = $node->ownerDocument->createElement( 'div' ); $newNode->setAttribute( 'id', 'new' ); return $newNode; } return true; }, 'nodeName' => null, 'env' => $basicEnv, 'expectedTrace' => [ 'x1', 'x1_1', 'new', 'x2', 'x2_1' ], ], 'name filter' => [ 'callback' => static function ( Node $node, Env $env, array $options, bool $atTopLevel, ?stdClass $tplInfo ) { if ( $node instanceof Element && $node->getAttribute( 'id' ) === 'x1_2' ) { return null; } return true; }, 'nodeName' => 'div', 'env' => $basicEnv, 'expectedTrace' => [ 'x1', 'x1_1', 'x1_2', 'x1_2_1', 'x1_2_2', 'x1_3', 'x2', 'x2_1' ], ], ]; } }