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Groovy example source code file (MinMaxTest.groovy)

This example Groovy source code file (MinMaxTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

chris, chris, expected, groovytestcase, joe, joe, leicester, minmaxtest, orderby, people, person, person, string, string

The Groovy MinMaxTest.groovy source code

package groovy

/** 
 * Tests the min() and max() functions
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 11087 $
 */
class MinMaxTest extends GroovyTestCase {

    void testSimpleMinMax() {
        def list = [5, 2, 6, 1, 9, 8]
        
        def n = list.min()
        assert n == 1
        
        n = list.max()
        assert n == 9
    }
    
    void testMinMaxWithComparator() {
        def people = getPeople()

        // let's find the maximum by name

        def order = new OrderBy( { it.get('@cheese') } )

        println("People ${people}")

        def p = people.min(order)

        println("Found ${p}")

        assert p.get("@name") == "Joe" , "found person ${p}"

        p = people.max(order)
        assert p.get("@name") == "Chris" , "found person ${p}"
    }
    
    void testMinMaxOnArraysWithComparator() {
        Person[] people = [
            new Person(name:'James', cheese:'Edam', location:'London'),
            new Person(name:'Bob', cheese:'Cheddar', location:'Atlanta'),
            new Person(name:'Chris', cheese:'Red Leicester', location:'London'),
            new Person(name:'Joe', cheese:'Brie', location:'London')
        ]

        // let's find the maximum by name
        def order = new OrderBy( { it.cheese } )

        def p = people.min(order)
        assert p.name == "Joe", "Expected to find Joe but found person ${p}"

        p = people.max(order)
        assert p.name == "Chris", "Expected to find Chris but found person ${p}"
    }

    def getPeople() {
        def builder = new NodeBuilder()
        def tree = builder.people {
            person(name:'James', cheese:'Edam', location:'London')
            person(name:'Bob', cheese:'Cheddar', location:'Atlanta')
            person(name:'Chris', cheese:'Red Leicester', location:'London')
            person(name:'Joe', cheese:'Brie', location:'London')
        }
        
        return tree.children()
    }

}

class Person {
    String name
    String cheese
    String location
}

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