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 * Copyright (c) ETSI 2017.
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 * is hereby granted, free of charge, to copy, reproduce and amend this file
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 * 
 * ETSI shall never be liable for any claim, damages, or other liability arising
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 * copyright notice shall be included in all copies of whole or part of this
 * file and shall not imply any sub-license right.
 *
 * Modified by: Adrien Kirjak
 *
 ** @version  0.0.1
 ** @purpose  1:20.5.1, verify than default are processed in interleave
 ** @verdict  pass accept, ttcn3verdict:pass
 ***************************************************/

// The following requirement is tested:
// The default mechanism is evoked at the end of each alt statement, if due to the 
// actual snapshot none of the specified alternatives could be executed. An evoked 
// default mechanism invokes the first altstep in the list of defaults, i.e. the last
// activated default, and waits for the result of its termination. The termination can 
// be successful or unsuccessful.

// In particular, the test case is related to the NOTE 1: 
// An interleave statement is semantically equivalent to a nested set of alt statements 
// and the default mechanism also applies to each of these alt statements. This means, 
// the default mechanism also applies to interleave statements. Furthermore, the restrictions 
// imposed on interleave statements in clause 20.4 do not apply to altsteps that are 
// activated as default behaviour for interleave statements.

module Sem_200501_the_default_mechanism_003 { 

	type port P message {
		inout integer;
	} with {extension "internal"}
	
	type component GeneralComp {
		port P p;
	}
	
	altstep a() runs on GeneralComp {
		[] p.receive(integer:?) {
			setverdict(pass); 
		}
	}

	testcase TC_Sem_200501_the_default_mechanism_003() runs on GeneralComp {
		activate(a());

		connect(self:p, self:p);
		p.send(integer:1);
		p.send(integer:2);

		interleave {
			[] p.receive(integer:1) { // expected, no default in this case
				setverdict(pass);
			}
			[] p.receive(integer:3) { // not expected: leads to default invocation
				setverdict(fail);
			}
		}
	}

	control{
		execute(TC_Sem_200501_the_default_mechanism_003());
	}
}
