tests/org.eclipse.ocl.uml.tests/src/org/eclipse/ocl/uml/tests/MessagesTest.java - ocl/org.eclipse.ocl - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006, 2009 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *   IBM - Initial API and implementation
  *******************************************************************************/

 package org.eclipse.ocl.uml.tests;

 import java.util.List;

 import org.eclipse.ocl.helper.Choice;
 import org.eclipse.ocl.helper.ChoiceKind;
 import org.eclipse.ocl.helper.ConstraintKind;

 /**
  * Tests for message expressions.
  *
  * @author Christian W. Damus (cdamus)
  */
 @SuppressWarnings("nls")
 public class MessagesTest
 	extends AbstractTestSuite {

 	/**
 	 * Tests the parsing of the hasSent ("^") expression for operations.
 	 */
 	public void test_hasSent_operation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// test query operation calls without any arguments
 			helper.createPostcondition("self^preferredColor()");

 			// test non-query operation calls without any arguments
 			helper.createPostcondition("self ^ newFruit()");

 			// test operation calls with one argument.  Incidentally put a more
 			//    interesting expression as the target
 			helper.createPostcondition(
 					"Apple.allInstances()->any(true) ^ripen(Color::yellow)");

 			// test operation calls with multiple arguments
 			helper.createPostcondition(
 					"Fruit.allInstances()->forAll(f | self^setColor(f, Color::red))");

 			// test operation signature conformance matching
 			helper.createPostcondition(
 					"Apple.allInstances()->forAll(a | self^setColor(a, Color::red))");

 			// test operation signature conformance matching with null object type
 			helper.createPostcondition(
 					"Apple.allInstances()->forAll(a | self^setColor(null, Color::red))");

 			// test operation signature conformance matching with null data type
 			helper.createPostcondition(
 					"Apple.allInstances()->forAll(a | self^setColor(a, null))");
 		} catch (Exception e) {
 			fail("Failed to parse: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the validation of the hasSent ("^") expression for operations.
 	 */
 	public void test_hasSent_operation_validation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// non-existent operation
 			helper.createPostcondition("self^label('foo')");

 			fail("Should have failed to parse unknown operation");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}

 		try {
 			// non-conformant argument
 			helper.createPostcondition("self^setColor(self, 'red')");

 			fail("Should have failed to parse non-conformant arg");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests parsing of the hasSent ("^") expression with unspecified value
 	 * expressions for operations.
 	 */
 	public void test_hasSent_operation_unspecifiedValue() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			helper.createPostcondition(
 					"Apple.allInstances()->any(true)^ripen(? : Color)");

 			helper.createPostcondition(
 					"Fruit.allInstances()->forAll(f | self^setColor(? : Fruit, ? : Color))");

 			helper.createPostcondition(
 					"Apple.allInstances()->any(true)^ripen(?)");

 			helper.createPostcondition(
 					"Fruit.allInstances()->forAll(f | self^setColor(?, ?))");
 		} catch (Exception e) {
 			fail("Failed to parse: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests validation of the hasSent ("^") expression with unspecified value
 	 * expressions for operations.
 	 */
 	public void test_hasSent_operation_unspecifiedValue_validation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// non-existent operation
 			helper.createPostcondition("self^label(?)");

 			fail("Should have failed to parse unknown operation");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}

 		try {
 			// non-conformant argument
 			helper.createPostcondition("self^setColor(self, ? : String)");

 			fail("Should have failed to parse non-conformant arg");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the parsing of the sentMessages ("^^") expression for operations.
 	 */
 	public void test_sentMessages_operation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// test query operation calls without any arguments
 			helper.createPostcondition(
 					"self^^preferredColor()->notEmpty()");

 			// test non-query operation calls without any arguments
 			helper.createPostcondition("self^^newFruit()->first().oclIsKindOf(OclMessage)");

 			// test operation calls with one argument.  Incidentally put a more
 			//    interesting expression as the target
 			helper.createPostcondition(
 					"Apple.allInstances()->any(true)^^ripen(Color::yellow)->notEmpty()");

 			// test operation calls with multiple arguments
 			helper.createPostcondition(
 					"Fruit.allInstances()->collect(f | self^^setColor(f, Color::red))->notEmpty()");

 			// test operation signature conformance matching
 			helper.createPostcondition(
 					"Apple.allInstances()->collect(a | self^^setColor(a, Color::red))->notEmpty()");

 			// test operation signature conformance matching with null object type
 			helper.createPostcondition(
 					"Apple.allInstances()->collect(a | self^^setColor(null, Color::red))->notEmpty()");

 			// test operation signature conformance matching with null data type
 			helper.createPostcondition(
 					"Apple.allInstances()->collect(a | self^^setColor(a, null))->notEmpty()");
 		} catch (Exception e) {
 			fail("Failed to parse: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the parsing of OclMessage expressions for operations.
 	 */
 	public void test_message_access_operation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// test type conformance
 			helper.createPostcondition(
 					"let msgs : Sequence(OclMessage) = self^^preferredColor() in " +
 					"msgs->forAll(m | m.hasReturned() and m.isOperationCall() and not m.isSignalSent())");

 			// test non-query operation calls without any arguments
 			helper.createPostcondition("self^^newFruit()->first().oclIsKindOf(OclMessage)");

 			// test operation calls with one argument.  Incidentally put a more
 			//    interesting expression as the target
 			helper.createPostcondition(
 					"Apple.allInstances()->any(true)^^ripen(Color::yellow)->notEmpty()");

 			// types of the OclMessage properties are determined by the actual
 			//    operation type, not by the MessageExp arguments
 			helper.createPostcondition(
 					"let msgs : Collection(OclMessage) = Fruit.allInstances()->collect(f | self^^setColor(?, ?)) in " +
 					"msgs->forAll(m | m.fruit.color = Color::black implies m.newColor = Color::black)");

 			// return values
 			helper.createPostcondition(
 					"let msgs : Collection(OclMessage) = Fruit.allInstances()->collect(f | self^^newFruit()) in " +
 					"msgs->forAll(m | m.hasReturned() implies m.result().color = Color::green)");
 		} catch (Exception e) {
 			fail("Failed to parse: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the validation of the setMessages ("^^") expression for operations.
 	 */
 	public void test_sentMessages_operation_validation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// non-existent operation
 			helper.createPostcondition("self^^label('foo')->notEmpty()");

 			fail("Should have failed to parse unknown operation");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}

 		try {
 			// non-conformant argument
 			helper.createPostcondition("self^^setColor(self, 'red')->notEmpty()");

 			fail("Should have failed to parse non-conformant arg");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the parsing of the hasSent ("^") expression for signals.
 	 */
 	public void test_hasSent_signal() {
 		helper.setOperationContext(apple, fruit_ripen);

 		try {
 			helper.createPostcondition("self^Drop(3, self.stem)");

 			helper.createPostcondition("self ^ Drop(? : Real, ? : Stem)");

 			helper.createPostcondition("self ^Drop(? : Integer, ?)");

 			helper.createPostcondition("self^Drop(?, ?)");

 			helper.createPostcondition(
 					"Apple.allInstances()->any(true)^Drop(3, stem)");

 			helper.createPostcondition(
 					"Apple.allInstances()->exists(a | a^Drop(3, stem))");

 			helper.createPostcondition(
 					"Fruit.allInstances()->forAll(f | f^Drop(?, ?) implies self^Drop(?, ?))");
 		} catch (Exception e) {
 			fail("Failed to parse: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the validation of the hasSent ("^") expression for signals.
 	 */
 	public void test_hasSent_signal_validation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// non-existent signal
 			helper.createPostcondition("self^Rot(3, stem)");

 			fail("Should have failed to parse unknown signal");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}

 		try {
 			// non-conformant argument
 			helper.createPostcondition("self^Drop('red', ?)");

 			fail("Should have failed to parse non-conformant arg");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the parsing of the sentMessages ("^^") expression for signals.
 	 */
 	public void test_sentMessages_signal() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			helper.createPostcondition(
 					"self^^Drop(3, self.oclAsType(Apple).stem)->notEmpty()");

 			helper.createPostcondition("self^^Drop(?, ?)->first().oclIsKindOf(OclMessage)");

 			helper.createPostcondition(
 					"Apple.allInstances()->any(true)^^Drop(3, ?)->notEmpty()");

 			helper.createPostcondition(
 					"Apple.allInstances()->collect(a | self^^Drop(null, ? : Stem))->notEmpty()");

 			helper.createPostcondition(
 					"Apple.allInstances()->collect(a | self^^Drop(3, null))->notEmpty()");
 		} catch (Exception e) {
 			fail("Failed to parse: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the parsing of OclMessage expressions for signals.
 	 */
 	public void test_message_access_signal() {
 		helper.setOperationContext(apple, fruit_ripen);

 		try {
 			helper.createPostcondition(
 					"let msgs : Sequence(OclMessage) = self^^Drop(?, ?) in " +
 					"msgs->forAll(m | m.isSignalSent() and not m.isOperationCall())");

 			helper.createPostcondition("self^^Drop(?, ?)->first().oclIsKindOf(OclMessage)");

 			helper.createPostcondition(
 					"let msgs : Collection(OclMessage) = Fruit.allInstances()->collect(f | self^^Drop(?, ?)) in " +
 					"msgs->forAll(m | m.delay > 0 and stem <> self.stem)");
 		} catch (Exception e) {
 			fail("Failed to parse: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the validation of the setMessages ("^^") expression for signals.
 	 */
 	public void test_sentMessages_signal_validation() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			// non-existent signal
 			helper.createPostcondition("self^^Rot('now')->notEmpty()");

 			fail("Should have failed to parse unknown signal");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}

 		try {
 			// non-conformant argument
 			helper.createPostcondition("self^^Drop(self, ?)->notEmpty()");

 			fail("Should have failed to parse non-conformant arg");
 		} catch (Exception e) {
 			// success
 			System.out.println("Got expected error: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the presentation of operation call choices.
 	 */
 	public void test_contentAssist_operations() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			List<Choice> choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION,
 					"self^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
 			assertChoice(choices, ChoiceKind.OPERATION, "setColor");
 			assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");

 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION, "self^^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
 			assertChoice(choices, ChoiceKind.OPERATION, "setColor");
 			assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");

 			// doesn't parse
 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION, "self^^^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.VARIABLE, "color");

 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION,
 					"Apple.allInstances()->any(true)^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
 			assertChoice(choices, ChoiceKind.OPERATION, "setColor");
 			assertChoice(choices, ChoiceKind.OPERATION, "label");
 			assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");

 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION,
 					"Apple.allInstances()->collect(a : Apple | a^^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
 			assertChoice(choices, ChoiceKind.OPERATION, "setColor");
 			assertChoice(choices, ChoiceKind.OPERATION, "label");
 			assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");
 		} catch (Exception e) {
 			fail("Parse failed: " + e.getLocalizedMessage());
 		}
 	}

 	/**
 	 * Tests the presentation of signal send choices.
 	 */
 	public void test_contentAssist_signals() {
 		helper.setOperationContext(fruit, fruit_ripen);

 		try {
 			List<Choice> choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION,
 					"self^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.SIGNAL, "Drop");

 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION, "self^^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.SIGNAL, "Drop");

 			// doesn't parse
 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION, "self^^^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.VARIABLE, "color");

 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION,
 					"Apple.allInstances()->any(true)^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.SIGNAL, "Drop");

 			choices = helper.getSyntaxHelp(
 					ConstraintKind.POSTCONDITION,
 					"Apple.allInstances()->collect(a : Apple | a^^");
 			assertNotNull(choices);
 			assertChoice(choices, ChoiceKind.SIGNAL, "Drop");
 		} catch (Exception e) {
 			fail("Parse failed: " + e.getLocalizedMessage());
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2006, 2009 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM - Initial API and implementation
	*******************************************************************************/

	package org.eclipse.ocl.uml.tests;

	import java.util.List;

	import org.eclipse.ocl.helper.Choice;
	import org.eclipse.ocl.helper.ChoiceKind;
	import org.eclipse.ocl.helper.ConstraintKind;

	/**
	* Tests for message expressions.
	*
	* @author Christian W. Damus (cdamus)
	*/
	@SuppressWarnings("nls")
	public class MessagesTest
	extends AbstractTestSuite {

	/**
	* Tests the parsing of the hasSent ("^") expression for operations.
	*/
	public void test_hasSent_operation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// test query operation calls without any arguments
	helper.createPostcondition("self^preferredColor()");

	// test non-query operation calls without any arguments
	helper.createPostcondition("self ^ newFruit()");

	// test operation calls with one argument. Incidentally put a more
	// interesting expression as the target
	helper.createPostcondition(
	"Apple.allInstances()->any(true) ^ripen(Color::yellow)");

	// test operation calls with multiple arguments
	helper.createPostcondition(
	"Fruit.allInstances()->forAll(f \| self^setColor(f, Color::red))");

	// test operation signature conformance matching
	helper.createPostcondition(
	"Apple.allInstances()->forAll(a \| self^setColor(a, Color::red))");

	// test operation signature conformance matching with null object type
	helper.createPostcondition(
	"Apple.allInstances()->forAll(a \| self^setColor(null, Color::red))");

	// test operation signature conformance matching with null data type
	helper.createPostcondition(
	"Apple.allInstances()->forAll(a \| self^setColor(a, null))");
	} catch (Exception e) {
	fail("Failed to parse: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the validation of the hasSent ("^") expression for operations.
	*/
	public void test_hasSent_operation_validation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// non-existent operation
	helper.createPostcondition("self^label('foo')");

	fail("Should have failed to parse unknown operation");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}

	try {
	// non-conformant argument
	helper.createPostcondition("self^setColor(self, 'red')");

	fail("Should have failed to parse non-conformant arg");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests parsing of the hasSent ("^") expression with unspecified value
	* expressions for operations.
	*/
	public void test_hasSent_operation_unspecifiedValue() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	helper.createPostcondition(
	"Apple.allInstances()->any(true)^ripen(? : Color)");

	helper.createPostcondition(
	"Fruit.allInstances()->forAll(f \| self^setColor(? : Fruit, ? : Color))");

	helper.createPostcondition(
	"Apple.allInstances()->any(true)^ripen(?)");

	helper.createPostcondition(
	"Fruit.allInstances()->forAll(f \| self^setColor(?, ?))");
	} catch (Exception e) {
	fail("Failed to parse: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests validation of the hasSent ("^") expression with unspecified value
	* expressions for operations.
	*/
	public void test_hasSent_operation_unspecifiedValue_validation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// non-existent operation
	helper.createPostcondition("self^label(?)");

	fail("Should have failed to parse unknown operation");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}

	try {
	// non-conformant argument
	helper.createPostcondition("self^setColor(self, ? : String)");

	fail("Should have failed to parse non-conformant arg");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the parsing of the sentMessages ("^^") expression for operations.
	*/
	public void test_sentMessages_operation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// test query operation calls without any arguments
	helper.createPostcondition(
	"self^^preferredColor()->notEmpty()");

	// test non-query operation calls without any arguments
	helper.createPostcondition("self^^newFruit()->first().oclIsKindOf(OclMessage)");

	// test operation calls with one argument. Incidentally put a more
	// interesting expression as the target
	helper.createPostcondition(
	"Apple.allInstances()->any(true)^^ripen(Color::yellow)->notEmpty()");

	// test operation calls with multiple arguments
	helper.createPostcondition(
	"Fruit.allInstances()->collect(f \| self^^setColor(f, Color::red))->notEmpty()");

	// test operation signature conformance matching
	helper.createPostcondition(
	"Apple.allInstances()->collect(a \| self^^setColor(a, Color::red))->notEmpty()");

	// test operation signature conformance matching with null object type
	helper.createPostcondition(
	"Apple.allInstances()->collect(a \| self^^setColor(null, Color::red))->notEmpty()");

	// test operation signature conformance matching with null data type
	helper.createPostcondition(
	"Apple.allInstances()->collect(a \| self^^setColor(a, null))->notEmpty()");
	} catch (Exception e) {
	fail("Failed to parse: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the parsing of OclMessage expressions for operations.
	*/
	public void test_message_access_operation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// test type conformance
	helper.createPostcondition(
	"let msgs : Sequence(OclMessage) = self^^preferredColor() in " +
	"msgs->forAll(m \| m.hasReturned() and m.isOperationCall() and not m.isSignalSent())");

	// test non-query operation calls without any arguments
	helper.createPostcondition("self^^newFruit()->first().oclIsKindOf(OclMessage)");

	// test operation calls with one argument. Incidentally put a more
	// interesting expression as the target
	helper.createPostcondition(
	"Apple.allInstances()->any(true)^^ripen(Color::yellow)->notEmpty()");

	// types of the OclMessage properties are determined by the actual
	// operation type, not by the MessageExp arguments
	helper.createPostcondition(
	"let msgs : Collection(OclMessage) = Fruit.allInstances()->collect(f \| self^^setColor(?, ?)) in " +
	"msgs->forAll(m \| m.fruit.color = Color::black implies m.newColor = Color::black)");

	// return values
	helper.createPostcondition(
	"let msgs : Collection(OclMessage) = Fruit.allInstances()->collect(f \| self^^newFruit()) in " +
	"msgs->forAll(m \| m.hasReturned() implies m.result().color = Color::green)");
	} catch (Exception e) {
	fail("Failed to parse: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the validation of the setMessages ("^^") expression for operations.
	*/
	public void test_sentMessages_operation_validation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// non-existent operation
	helper.createPostcondition("self^^label('foo')->notEmpty()");

	fail("Should have failed to parse unknown operation");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}

	try {
	// non-conformant argument
	helper.createPostcondition("self^^setColor(self, 'red')->notEmpty()");

	fail("Should have failed to parse non-conformant arg");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the parsing of the hasSent ("^") expression for signals.
	*/
	public void test_hasSent_signal() {
	helper.setOperationContext(apple, fruit_ripen);

	try {
	helper.createPostcondition("self^Drop(3, self.stem)");

	helper.createPostcondition("self ^ Drop(? : Real, ? : Stem)");

	helper.createPostcondition("self ^Drop(? : Integer, ?)");

	helper.createPostcondition("self^Drop(?, ?)");

	helper.createPostcondition(
	"Apple.allInstances()->any(true)^Drop(3, stem)");

	helper.createPostcondition(
	"Apple.allInstances()->exists(a \| a^Drop(3, stem))");

	helper.createPostcondition(
	"Fruit.allInstances()->forAll(f \| f^Drop(?, ?) implies self^Drop(?, ?))");
	} catch (Exception e) {
	fail("Failed to parse: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the validation of the hasSent ("^") expression for signals.
	*/
	public void test_hasSent_signal_validation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// non-existent signal
	helper.createPostcondition("self^Rot(3, stem)");

	fail("Should have failed to parse unknown signal");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}

	try {
	// non-conformant argument
	helper.createPostcondition("self^Drop('red', ?)");

	fail("Should have failed to parse non-conformant arg");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the parsing of the sentMessages ("^^") expression for signals.
	*/
	public void test_sentMessages_signal() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	helper.createPostcondition(
	"self^^Drop(3, self.oclAsType(Apple).stem)->notEmpty()");

	helper.createPostcondition("self^^Drop(?, ?)->first().oclIsKindOf(OclMessage)");

	helper.createPostcondition(
	"Apple.allInstances()->any(true)^^Drop(3, ?)->notEmpty()");

	helper.createPostcondition(
	"Apple.allInstances()->collect(a \| self^^Drop(null, ? : Stem))->notEmpty()");

	helper.createPostcondition(
	"Apple.allInstances()->collect(a \| self^^Drop(3, null))->notEmpty()");
	} catch (Exception e) {
	fail("Failed to parse: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the parsing of OclMessage expressions for signals.
	*/
	public void test_message_access_signal() {
	helper.setOperationContext(apple, fruit_ripen);

	try {
	helper.createPostcondition(
	"let msgs : Sequence(OclMessage) = self^^Drop(?, ?) in " +
	"msgs->forAll(m \| m.isSignalSent() and not m.isOperationCall())");

	helper.createPostcondition("self^^Drop(?, ?)->first().oclIsKindOf(OclMessage)");

	helper.createPostcondition(
	"let msgs : Collection(OclMessage) = Fruit.allInstances()->collect(f \| self^^Drop(?, ?)) in " +
	"msgs->forAll(m \| m.delay > 0 and stem <> self.stem)");
	} catch (Exception e) {
	fail("Failed to parse: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the validation of the setMessages ("^^") expression for signals.
	*/
	public void test_sentMessages_signal_validation() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	// non-existent signal
	helper.createPostcondition("self^^Rot('now')->notEmpty()");

	fail("Should have failed to parse unknown signal");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}

	try {
	// non-conformant argument
	helper.createPostcondition("self^^Drop(self, ?)->notEmpty()");

	fail("Should have failed to parse non-conformant arg");
	} catch (Exception e) {
	// success
	System.out.println("Got expected error: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the presentation of operation call choices.
	*/
	public void test_contentAssist_operations() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	List<Choice> choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION,
	"self^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
	assertChoice(choices, ChoiceKind.OPERATION, "setColor");
	assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");

	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION, "self^^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
	assertChoice(choices, ChoiceKind.OPERATION, "setColor");
	assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");

	// doesn't parse
	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION, "self^^^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.VARIABLE, "color");

	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION,
	"Apple.allInstances()->any(true)^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
	assertChoice(choices, ChoiceKind.OPERATION, "setColor");
	assertChoice(choices, ChoiceKind.OPERATION, "label");
	assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");

	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION,
	"Apple.allInstances()->collect(a : Apple \| a^^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.OPERATION, "newFruit");
	assertChoice(choices, ChoiceKind.OPERATION, "setColor");
	assertChoice(choices, ChoiceKind.OPERATION, "label");
	assertNotChoice(choices, ChoiceKind.OPERATION, "oclIsKindOf");
	} catch (Exception e) {
	fail("Parse failed: " + e.getLocalizedMessage());
	}
	}

	/**
	* Tests the presentation of signal send choices.
	*/
	public void test_contentAssist_signals() {
	helper.setOperationContext(fruit, fruit_ripen);

	try {
	List<Choice> choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION,
	"self^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.SIGNAL, "Drop");

	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION, "self^^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.SIGNAL, "Drop");

	// doesn't parse
	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION, "self^^^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.VARIABLE, "color");

	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION,
	"Apple.allInstances()->any(true)^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.SIGNAL, "Drop");

	choices = helper.getSyntaxHelp(
	ConstraintKind.POSTCONDITION,
	"Apple.allInstances()->collect(a : Apple \| a^^");
	assertNotNull(choices);
	assertChoice(choices, ChoiceKind.SIGNAL, "Drop");
	} catch (Exception e) {
	fail("Parse failed: " + e.getLocalizedMessage());
	}
	}
	}