static bool _verifyImage( const QString &testName, QString &report ) { QgsRenderChecker checker; checker.setControlPathPrefix( QStringLiteral( "data_defined_size_legend" ) ); checker.setControlName( "expected_" + testName ); checker.setRenderedImage( _fileNameForTest( testName ) ); checker.setSizeTolerance( 3, 3 ); bool equal = checker.compareImages( testName, 500 ); report += checker.report(); return equal; }