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Groovy example source code file (ProxyGeneratorTest.groovy)

This example Groovy source code file (ProxyGeneratorTest.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

a, abstractclass, b, b, e, g, map, testclass, testclass, testinterface, testinterface, testotherinterface, x, x

The Groovy ProxyGeneratorTest.groovy source code

/*
 * Copyright 2003-2007 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy.util

/**
 * @author Paul King
 */
class ProxyGeneratorTest extends GroovyTestCase {

    ProxyGenerator generator = ProxyGenerator.INSTANCE

    void testAggregateFromBaseClass() {
        Map map = [myMethodB: {"the new B"}, myMethodX: {"the injected X"}]
        def testClass = generator.instantiateAggregateFromBaseClass(map, TestClass)
        assert testClass instanceof TestClass
        assert testClass.myMethodA() == "the original A"
        assert testClass.myMethodB() == "the new B"
        assert testClass.myMethodX() == "the injected X"
    }

    void testAggregateFromAbstractBaseClass() {
        Map map = [myMethodG: {"the concrete G"}, myMethodX: {"the injected X"}]
        def testClass = generator.instantiateAggregateFromBaseClass(map, AbstractClass)
        assert testClass instanceof AbstractClass
        assert testClass.myMethodA() == "the original A"
        assert testClass.myMethodG() == "the concrete G"
        assert testClass.myMethodX() == "the injected X"
    }

    void testAggregateFromInterface() {
        Map map = [myMethodC: {"the injected C"}]
        def testClass = generator.instantiateAggregateFromInterface(map, TestInterface)
        assert testClass instanceof TestInterface
        assert testClass instanceof GroovyObject
        assert testClass.myMethodC() == "the injected C"
    }

    void testAggregate() {
        Map map = [myMethodE: {"the injected E"}, myMethodB: {"the new B"}, myMethodX: {"the injected X"}]
        def testClass = generator.instantiateAggregate(map, [TestInterface, TestOtherInterface], TestClass)
        assert testClass instanceof TestInterface
        assert testClass instanceof TestOtherInterface
        assert testClass instanceof TestClass
        assert testClass.myMethodA() == "the original A"
        assert testClass.myMethodB() == "the new B"
        assert testClass.myMethodX() == "the injected X"
        assert testClass.myMethodE() == "the injected E"
    }

    void testDelegate() {
        def delegate = new TestClass()
        Map map = [myMethodE: {"the injected E"}, myMethodB: {"the new B"}, myMethodX: {"the injected X"}]
        def testClass = generator.instantiateDelegate(map, [TestInterface, TestOtherInterface], delegate)
        assert testClass instanceof TestInterface
        assert testClass instanceof TestOtherInterface
        assert testClass.myMethodA() == "the original A"
        assert testClass.myMethodB() == "the new B"
        assert testClass.myMethodX() == "the injected X"
        assert testClass.myMethodE() == "the injected E"
    }

    void testDelegateWithBaseClass() {
        def delegate = new TestClass()
        Map map = [myMethodE: {"the injected E"}, myMethodB: {"the new B"}, myMethodX: {"the injected X"}]
        TestClass testClass = generator.instantiateDelegateWithBaseClass(map, [TestInterface, TestOtherInterface], delegate)
        assert testClass instanceof TestInterface
        assert testClass instanceof TestOtherInterface
        assert testClass.myMethodA() == "the original A"
        assert testClass.myMethodB() == "the new B"
        assert testClass.myMethodX() == "the injected X"
        assert testClass.myMethodE() == "the injected E"
    }
    
    void testDelegateForGROOVY_2705() {
        def delegate = [1, 2, 3, 4, 5]
        def testClass = generator.instantiateDelegate([List], delegate)
        assert testClass instanceof List
        assert 5 == testClass.size() 
        assert [1, 2, 3, 4, 5] == testClass.iterator().collect { it }
        assert 3 == testClass[2]
        testClass[3] = 99
        assert 99 == testClass[3]
        testClass.removeRange(1, 3)
        assert [1, 99, 5] == testClass
    }

    void testUnknownMethodThrowsUnsupportedOperationException() {
        def map = [ myMethodA: { 'some string' } ]
        def proxy = ProxyGenerator.instantiateAggregateFromInterface(map, TestInterface)
        assert proxy instanceof TestInterface
        assertEquals 'some string', proxy.myMethodA()
        shouldFail(UnsupportedOperationException) {
            proxy.myMethodC()
        }
    }

    void testUnknownMethodWithBlankBody() {
        def map = [ myMethodA: { 'some string' } ]
        def gen = new ProxyGenerator()
        gen.emptyMethods = true
        def proxy = gen.instantiateAggregate(map, [TestInterface])
        assert proxy instanceof TestInterface
        assertEquals 'some string', proxy.myMethodA()
        proxy.myMethodC()
    }
}

class TestClass {
    def myMethodA() { return "the original A" }
    def myMethodB() { return "the original B" }
}

interface TestInterface {
    def myMethodA()
    def myMethodC()
    def myMethodD()
}

interface TestOtherInterface {
    def myMethodB()
    def myMethodE()
    def myMethodF()
}

abstract class AbstractClass {
    def myMethodA() { return "the original A" }
    abstract myMethodG()
}

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