sequencetest.java

来自「Groovy动态语言 运行在JVM中的动态语言 可以方便的处理业务逻辑变化大的业」· Java 代码 · 共 105 行

/*
 $Id: SequenceTest.java 1924 2005-03-02 08:23:38Z jstrachan $

 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.

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 ("Software"), with or without modification, are permitted provided
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    statements and notices.  Redistributions must also contain a
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    following disclaimer in the documentation and/or other
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    products derived from this Software without prior written
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    http://groovy.codehaus.org/

 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 */

package groovy.lang;

import java.util.List;

import org.codehaus.groovy.runtime.InvokerHelper;

import groovy.util.GroovyTestCase;

/**
 * Tests the use of the structured Attribute type
 * 
 * @author <a href="mailto:[e-mail]">James Strachan</a>
 * @version $Revision: 1924 $
 */
public class SequenceTest extends GroovyTestCase {

    public void testConstruction() {
        Sequence sequence = new Sequence(String.class);
        sequence.add("James");
        sequence.add("Bob");

        assertEquals("Size", 2, sequence.size());
        assertEquals("Element", "James", sequence.get(0));
        assertEquals("Element", "Bob", sequence.get(1));

        // now lets try some methods on each item in the list
        List answer = (List) InvokerHelper.invokeMethod(sequence, "startsWith", new Object[] { "Ja" });
        assertArrayEquals(new Object[] { Boolean.TRUE, Boolean.FALSE }, answer.toArray());

        answer = (List) InvokerHelper.invokeMethod(sequence, "length", null);
        assertArrayEquals(new Object[] { new Integer(5), new Integer(3)}, answer.toArray());
    }

    public void testAddingWrongTypeFails() {
        try {
            Sequence sequence = new Sequence(String.class);
            sequence.add(new Integer(5));

            fail("Should have thrown exception");
        }
        catch (IllegalArgumentException e) {
            System.out.println("Caught: " + e);
        }
    }

    public void testAddingNullFails() {
        try {
            Sequence sequence = new Sequence(String.class);
            sequence.add(null);

            fail("Should have thrown exception");
        }
        catch (NullPointerException e) {
            System.out.println("Caught: " + e);
        }
    }

}