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Home » Modeling » TMF (Xtext) » ParseHelper accepts illegal input
ParseHelper accepts illegal input [message #1742997] Fri, 09 September 2016 08:56 Go to next message
Klaus Schulz is currently offline Klaus SchulzFriend
Messages: 2
Registered: September 2016
Junior Member
I have a simple grammar like this:


generate ruledsl "http://www.ruledsl.com"

Model:
	rules += Rule*;
	
Regel:
	rule = 'Rule' '{' subrule += Subrule*  '}'
;	

Subrule: fieldA=ID opName=Operator fieldB=INT;
Operator:
	'<' | '<=' | '=' | '>=' | '>' 
;

If I test this language with the generated Eclipse PlugIn, everything is fine.

However, I want to unit test my DSL and therefore I tried this:
@RunWith(XtextRunner)
@InjectWith(RegelspracheInjectorProvider)
class RuledslParsingTest{

	@Inject
	ParseHelper<Model> parseHelper

	@Test 
	def void loadModel() {
		parseHelper.
		val result = parseHelper.parse('''
			Rule {
				field1 > 5
				field3 = test5
			}
		''')
		println(result)
		
	}
}


Why does the parseHelper accept this illegal input? 'test5' is clearly not a legal value for fieldB?

[Updated on: Fri, 09 September 2016 21:16]

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Re: ParseHelper accepts illegal input [message #1743039 is a reply to message #1742997] Fri, 09 September 2016 19:51 Go to previous message
Christian Dietrich is currently offline Christian DietrichFriend
Messages: 13879
Registered: July 2009
Senior Member
You an ask the result for its eResource and the Resource for its errors to get parse errors. you may have a look at ValidationTestHelper as well.

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
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