Bug 206850 [Regression] Error pops up when select value for a map or highlight rule to group header row [0302]
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/api/HighlightRuleHandleTest.java
{
		createDesign( );
		StyleHandle style = designHandle.getElementFactory( )
				.newStyle( "style" ); 
		designHandle.getStyles( ).add( style );
		PropertyHandle propHandle = style
				.getPropertyHandle( IStyleModel.HIGHLIGHT_RULES_PROP );
		HighlightRule rule = StructureFactory.createHighlightRule( );
		propHandle.addItem( rule );
		HighlightRuleHandle ruleHandle = (HighlightRuleHandle) propHandle
				.get( 0 );
		ruleHandle.setOperator( DesignChoiceConstants.MAP_OPERATOR_IN );
		List values = new ArrayList( );
		values.add( "a" );
		values.add( "b" );
		ruleHandle.setValue1( values );
		ruleHandle.setTestExpression( "expr" );
		
		HighlightRule rule2 = StructureFactory.createHighlightRule( );
		List values2 = new ArrayList( );
		values2.add( "a" );
		values2.add( "b" );
		rule2.setValue1( values );
		rule2.setTestExpression( "expr2" );
		rule2.setOperator( DesignChoiceConstants.MAP_OPERATOR_IN );
		
		propHandle.addItem( rule2 );
	}
}