listiteratingtest.groovy

大名鼎鼎的java动态脚本语言。已经通过了sun的认证

import java.util.ArrayList

/** 
 * Tests iterating using Groovy
 * 
 * @author <a href="mailto:[e-mail]">James Strachan</a>
 * @version $Revision: 1.12 $
 */
class ListIteratingTest extends GroovyTestCase {

/** @todo parser
    testIteratingWithTuples() {
        def s = 1, 2, 3, 4
        assertSequence(s)
    }

    testIteratingWithTuplesAsParameter() {
        assertSequence(1, 2, 3, 4)
    }
*/

    void testIteratingWithSequences() {
        def s = [1, 2, 3, 4 ]
        assertSequence(s)
    }
    
    void testIteratingWithSequencesAsParameter() {
        assertSequence([1, 2, 3, 4 ])
    }
    
    def testIteratingWithList() {
        def s = new ArrayList()
        s.add(1)
        s.add(2)
        s.add(3)
        s.add(4)
        assertSequence(s)
    }

    protected void assertSequence(s) {
        def result = 0
        for ( i in s ) {
            result = result + i
        }
	    
        assert(result == 10)
        assert(s.size() == 4)
        
        assert(s[2] == 3)
        // @todo parser (Why @todo here?)
        //   s[1,2] or s[1..2] should be used instead of s[1:2],
        //   since [1:2] is a map literal syntax.
        result = 0
        for ( i in s[1,2] ) {    // or s[1..2]
            result += i
        }
        assert(result == 2+3)
    }
}