Fix test

Author: nyalldawson

src/core/expression/qgsexpressioncontextutils.cpp

@@ -767,7 +767,7 @@ QgsExpressionContextScope *QgsExpressionContextUtils::processingModelAlgorithmSc
     modelPath = context.project()->projectStorage() ? context.project()->fileName() : context.project()->absoluteFilePath();
   }
 
-  const QString modelFolder = QFileInfo( modelPath ).path();
+  const QString modelFolder = !modelPath.isEmpty() ? QFileInfo( modelPath ).path() : QString();
   modelScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "model_path" ), QDir::toNativeSeparators( modelPath ), true ) );
   modelScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "model_folder" ), QDir::toNativeSeparators( modelFolder ), true, true ) );
   modelScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "model_name" ), model->displayName(), true ) );

tests/src/analysis/testqgsprocessing.cpp

@@ -6014,8 +6014,8 @@ void TestQgsProcessing::modelScope()
   QCOMPARE( scope->variable( QStringLiteral( "model_group" ) ).toString(), QStringLiteral( "testGroup" ) );
   QVERIFY( scope->hasVariable( QStringLiteral( "model_path" ) ) );
   QVERIFY( scope->hasVariable( QStringLiteral( "model_folder" ) ) );
-  QVERIFY( scope->variable( QStringLiteral( "model_path" ) ).toString().isEmpty() );
-  QVERIFY( scope->variable( QStringLiteral( "model_folder" ) ).toString().isEmpty() );
+  QCOMPARE( scope->variable( QStringLiteral( "model_path" ) ).toString(), QString() );
+  QCOMPARE( scope->variable( QStringLiteral( "model_folder" ) ).toString(), QString() );
 
   QgsProject p;
   pc.setProject( &p );