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Groovy example source code file (DefaultParamClosureTest.groovy)

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

Java - Groovy tags/keywords

called, defaultparamclosuretest, groovytestcase, string, string, x, x, x-defb-defc, x-defb-defc, x-y-defc, x-y-z, y, y, z

The Groovy DefaultParamClosureTest.groovy source code

 * Copyright 2003-2010 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package groovy

class DefaultParamClosureTest extends GroovyTestCase {

    void testDefaultParameters() {
        // Default parameters working for closures 
    def doSomething = { a, b = 'defB', c = 'defC' ->
            println "Called with a: ${a}, b ${b}, c ${c}"
            return a + "-" + b + "-" + c

        def value = doSomething("X", "Y", "Z")
        assert value == "X-Y-Z"

        value = doSomething("X", "Y")
        assert value == "X-Y-defC"

        value = doSomething("X")
        assert value == "X-defB-defC"

        shouldFail { doSomething() }

    void testDefaultTypedParameters() {
    // Handle typed parameters
    def doTypedSomething = { String a = 'defA', String b = 'defB', String c = 'defC' ->
            println "Called typed method with a: ${a}, b ${b}, c ${c}"
            return a + "-" + b + "-" + c
        def value = doTypedSomething("X", "Y", "Z")
        assert value == "X-Y-Z"
        value = doTypedSomething("X", "Y")
        assert value == "X-Y-defC"
        value = doTypedSomething("X")
        assert value == "X-defB-defC"
        value = doTypedSomething()
        assert value == "defA-defB-defC"


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