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Groovy example source code file (SerializeTest.groovy)

This example Groovy source code file (SerializeTest.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

bytearrayinputstream, foo, gromit, gromit, groovytestcase, gstring, gstring, moon, moon, serializable, serializetest, should, withgstringfield, withgstringfield

The Groovy SerializeTest.groovy source code

/*
 * Copyright 2003-2009 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

class SerializeTest extends GroovyTestCase {

    void testGString () {
        def a = 2, b = 2
        def gs = "${a + b} = ${b * a}"

        assertTrue(gs instanceof GString)

        def buffer = write(gs)
        def res = read(buffer)

        assertTrue(res instanceof GString)
        assertEquals "4 = 4", res
    }

    void testGStringField () {
        def a = 2, b = 2

        def obj = new WithGStringField()
        obj.f = "${a + b} = ${b * a}"

        def buffer = write(obj)
        def resObj = read(buffer)

        assertEquals "4 = 4", resObj.f
    }

    void testFoo() {
        def foo = new Foo()
        foo.name = "Gromit"
        foo.location = "Moon"

        def buffer = write(foo)
        def object = read(buffer)

        assert object != null
        assert object.metaClass != null , "Should have a metaclass!"
        assert object.name == "Gromit"
        assert object.location == "Moon"
        assert object.class.name == "groovy.Foo"
        def fooClass = this.class.classLoader.systemClassLoader.loadClass('groovy.Foo')
        assert foo.class == fooClass
        assert object.class == fooClass
    }
    
    def write(object) {
        def buffer = new ByteArrayOutputStream()
        def out = new ObjectOutputStream(buffer)
        out << object
        out.close()
        return buffer.toByteArray()
    }
    
    def read(buffer) {
        def input = new ObjectInputStream(new ByteArrayInputStream(buffer))
        def object = input.readObject()
        input.close()
        return object
    }

}

class WithGStringField implements Serializable{
    private static final long serialVersionUID = 1L;

    GString f;
}

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