InvocationOnWhateverExpressionTest.java

/*
Copyright (c) 2008 Arno Haase, Andr� Arnold.
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:
    Arno Haase - initial API and implementation
    Andr� Arnold
 */
package org.eclipse.xtend.backend.expr;

import static org.eclipse.xtend.backend.testhelpers.BackendTestHelper.SOURCE_POS;
import static org.eclipse.xtend.backend.testhelpers.BackendTestHelper.createEmptyExecutionContext;
import static org.eclipse.xtend.backend.testhelpers.BackendTestHelper.createLiteral;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

import java.util.Arrays;
import java.util.Collections;

import org.eclipse.xtend.backend.common.QualifiedName;
import org.junit.Test;



/**
 * 
 * @author Arno Haase (http://www.haase-consulting.com)
 * @author Andr� Arnold
 */
public class InvocationOnWhateverExpressionTest {
    @SuppressWarnings("unchecked")
    @Test public void testInvocationOnObject () {
        assertEquals (3L, new InvocationOnWhateverExpression (new QualifiedName ("operatorPlus"), Arrays.asList (createLiteral (1L), createLiteral (2L)), false, SOURCE_POS).evaluate (createEmptyExecutionContext ()));
        assertEquals (3L, new InvocationOnWhateverExpression (new QualifiedName ("operatorPlus"), Arrays.asList (createLiteral (1L), createLiteral (2L)), true, SOURCE_POS).evaluate (createEmptyExecutionContext ()));
        assertEquals (Arrays.asList (1L), new InvocationOnWhateverExpression (new QualifiedName ("toList"), Arrays.asList (createLiteral (Arrays.asList(1L))), false, SOURCE_POS).evaluate (createEmptyExecutionContext()));
        assertEquals (Arrays.asList (1L), new InvocationOnWhateverExpression (new QualifiedName ("toList"), Arrays.asList (createLiteral (Arrays.asList(1L))), true, SOURCE_POS).evaluate (createEmptyExecutionContext()));

        assertEquals (Arrays.asList (Collections.singleton (1L)), new InvocationOnWhateverExpression (new QualifiedName ("toList"), Arrays.asList (createLiteral (Collections.singleton (Collections.singleton (1L)))), false, SOURCE_POS).evaluate (createEmptyExecutionContext()));
        assertEquals (Arrays.asList (Collections.singleton (1L)), new InvocationOnWhateverExpression (new QualifiedName ("toList"), Arrays.asList (createLiteral (Collections.singleton (Collections.singleton (1L)))), true, SOURCE_POS).evaluate (createEmptyExecutionContext()));
        
        assertEquals (null, new InvocationOnWhateverExpression (new QualifiedName ("toList"), Arrays.asList (createLiteral (null)), true, SOURCE_POS).evaluate (createEmptyExecutionContext()));
        assertEquals (null, new InvocationOnWhateverExpression (new QualifiedName ("operatorPlus"), Arrays.asList (createLiteral (null), createLiteral (2L)), true, SOURCE_POS).evaluate (createEmptyExecutionContext()));

        try {
            new InvocationOnWhateverExpression (new QualifiedName ("operatorPlus"), Arrays.asList (createLiteral (null), createLiteral (2L)), false, SOURCE_POS).evaluate (createEmptyExecutionContext());
            fail ("exception expected");
        }
        catch (Exception exc) {
        }
    }

     @Test public void testPrecedenceOfCollectionOperation () {
        assertEquals ("[1, 2, 3]4", new InvocationOnWhateverExpression (new QualifiedName ("operatorPlus"), Arrays.asList (createLiteral (Arrays.asList (1L, 2L, 3L)), createLiteral (4L)), true, SOURCE_POS).evaluate (createEmptyExecutionContext ()).toString());
        assertEquals ("[1, 2, 3]4", new InvocationOnWhateverExpression (new QualifiedName ("operatorPlus"), Arrays.asList (createLiteral (Arrays.asList (1L, 2L, 3L)), createLiteral (4L)), false, SOURCE_POS).evaluate (createEmptyExecutionContext ()).toString());
    }
    
    @Test public void testInvocationOnCollection () {
        assertEquals (Arrays.asList (1L, 2L, 3L), new InvocationOnWhateverExpression (new QualifiedName ("operatorMinus"), Arrays.asList (createLiteral (Arrays.asList (3L, 4L, 5L)), createLiteral (2L)), true, SOURCE_POS).evaluate (createEmptyExecutionContext ()));
        assertEquals (Arrays.asList (1L, 2L, 3L), new InvocationOnWhateverExpression (new QualifiedName ("operatorMinus"), Arrays.asList (createLiteral (Arrays.asList (3L, 4L, 5L)), createLiteral (2L)), false, SOURCE_POS).evaluate (createEmptyExecutionContext ()));
    }
    
    @Test public void testFlatten () {
        assertEquals (Arrays.asList("a","b","b","c","d"), new InvocationOnWhateverExpression (new QualifiedName ("split"), Arrays.asList (createLiteral (Arrays.asList ("a,b", "b,c,d")), createLiteral (",")), false, SOURCE_POS).evaluate (createEmptyExecutionContext()));
    }
}