    1   /*
    2    $Id: InvokerTest.java,v 1.14 2005/03/02 08:22:46 jstrachan Exp $
    3
    4    Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
    5
    6    Redistribution and use of this software and associated documentation
    7    ("Software"), with or without modification, are permitted provided
    8    that the following conditions are met:
    9
    10   1. Redistributions of source code must retain copyright
    11      statements and notices.  Redistributions must also contain a
    12      copy of this document.
    13
    14   2. Redistributions in binary form must reproduce the
    15      above copyright notice, this list of conditions and the
    16      following disclaimer in the documentation and/or other
    17      materials provided with the distribution.
    18
    19   3. The name "groovy" must not be used to endorse or promote
    20      products derived from this Software without prior written
    21      permission of The Codehaus.  For written permission,
    22      please contact info@codehaus.org.
    23
    24   4. Products derived from this Software may not be called "groovy"
    25      nor may "groovy" appear in their names without prior written
    26      permission of The Codehaus. "groovy" is a registered
    27      trademark of The Codehaus.
    28
    29   5. Due credit should be given to The Codehaus -
    30      http://groovy.codehaus.org/
    31
    32   THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
    33   ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
    34   NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
    35   FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
    36   THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
    37   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    38   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    39   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    40   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    41   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    42   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
    43   OF THE POSSIBILITY OF SUCH DAMAGE.
    44
    45   */
    46
    47  package org.codehaus.groovy.runtime;
    48
    49  import groovy.lang.GroovyRuntimeException;
    50  import groovy.util.GroovyTestCase;
    51
    52  import java.util.ArrayList;
    53  import java.util.Collection;
    54  import java.util.HashMap;
    55  import java.util.Iterator;
    56  import java.util.List;
    57  import java.util.Map;
    58  import java.util.Collections;
    59  import java.util.Arrays;
    60
    61
    62  /***
    63   * Test the Invoker class
    64   *
    65   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
    66   * @version $Revision: 1.14 $
    67   */
    68  public class InvokerTest extends GroovyTestCase {
    69
    70      protected Invoker invoker = new Invoker();
    71
    72      public void testAsCollectionWithArray() {
    73          Object[] array = { "A", "B", "C" };
    74          assertAsCollection(array, 3);
    75      }
    76
    77      public void testAsCollectionWithMap() {
    78          Map map = new HashMap();
    79          map.put("A", "abc");
    80          map.put("B", "def");
    81          map.put("C", "xyz");
    82          assertAsCollection(map, 3);
    83      }
    84
    85      public void testAsCollectionWithList() {
    86          List list = new ArrayList();
    87          list.add("A");
    88          list.add("B");
    89          list.add("C");
    90          assertAsCollection(list, 3);
    91      }
    92
    93      public void testInvokerException() throws Throwable {
    94          try {
    95              throw new GroovyRuntimeException("message", new NullPointerException());
    96          }
    97          catch (GroovyRuntimeException e) {
    98              // worked
    99              assertEquals("message", e.getMessage());
    100             assertTrue(e.getCause() instanceof NullPointerException);
    101         }
    102     }
    103
    104     public void testAsBoolean() {
    105         assertAsBoolean(true, Boolean.TRUE);
    106         assertAsBoolean(true, "true");
    107         assertAsBoolean(true, "TRUE");
    108         assertAsBoolean(true, "false");
    109         assertAsBoolean(false, Boolean.FALSE);
    110         assertAsBoolean(false, (String) null);
    111         assertAsBoolean(true, new Integer(1234));
    112         assertAsBoolean(false, new Integer(0));
    113         assertAsBoolean(true, new Float(0.3f));
    114         assertAsBoolean(true, new Double(3.0f));
    115         assertAsBoolean(false, new Float(0.0f));
    116 		assertAsBoolean(false, Collections.EMPTY_LIST);
    117 		assertAsBoolean(true, Arrays.asList(new Integer[] { new Integer(1) }));
    118        }
    119
    120     public void testLessThan() {
    121         assertTrue(InvokerHelper.compareLessThan(new Integer(1), new Integer(2)));
    122         assertTrue(InvokerHelper.compareLessThanEqual(new Integer(2), new Integer(2)));
    123     }
    124
    125     public void testGreaterThan() {
    126         assertTrue(InvokerHelper.compareGreaterThan(new Integer(3), new Integer(2)));
    127         assertTrue(InvokerHelper.compareGreaterThanEqual(new Integer(2), new Integer(2)));
    128     }
    129
    130     public void testCompareTo() {
    131         assertTrue(InvokerHelper.compareEqual("x", new Integer('x')));
    132     }
    133
    134     // Implementation methods
    135     //-------------------------------------------------------------------------
    136
    137     /***
    138      * Asserts the asBoolean method returns the given flag
    139      */
    140     protected void assertAsBoolean(boolean expected, Object value) {
    141         boolean answer = InvokerHelper.asBool(value);
    142         assertEquals("value: " + value + " asBoolean()", expected, answer);
    143     }
    144
    145     /***
    146      * Asserts that the given object can be converted into a collection and iterator
    147      * of the given size
    148      */
    149     protected void assertAsCollection(Object collectionObject, int count) {
    150         Collection collection = invoker.asCollection(collectionObject);
    151         assertTrue("Collection is not null", collection != null);
    152         assertEquals("Collection size", count, collection.size());
    153
    154         assertIterator("collections iterator", collection.iterator(), count);
    155         assertIterator("invoker.asIterator", invoker.asIterator(collectionObject), count);
    156         assertIterator("invoker.asIterator(invoker.asCollection)", invoker.asIterator(collection), count);
    157         assertIterator("invoker.asIterator(invoker.asIterator)", invoker.asIterator(invoker.asIterator(collectionObject)), count);
    158     }
    159
    160     /***
    161      * Asserts that the iterator is valid and of the right size
    162      */
    163     protected void assertIterator(String message, Iterator iterator, int count) {
    164         for (int i = 0; i < count; i++) {
    165             assertTrue(message + ": should have item: " + i, iterator.hasNext());
    166             assertTrue(message + ": item: " + i + " should not be null", iterator.next() != null);
    167         }
    168
    169         assertFalse(
    170             message + ": should not have item after iterating through: " + count + " items",
    171             iterator.hasNext());
    172     }
    173
    174
    175 }