groovy-core/src/test/groovy/lang/PropertyMissingTest.groovy

/*
 * 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.lang
/**
 * Tests the behaviour of the propertyMissing functionality of Groovy

 * @author Graeme Rocher
 * @since 1.1
  *
 * Created: Sep 5, 2007
 * Time: 5:50:28 PM
 *
 */
class PropertyMissingTest extends GroovyTestCase {


    void testPropertyMissingWithMethods() {
         def t = new PMTest1()

        assertEquals "bar", t.foo
        t.foo = "changed"
        assertEquals "changed", t.foo

        assertNull t.bar
        t.bar = "keepme"

        assertEquals "keepme", t.bar
    }

    void testPropertyMissingViaMetaClass() {
        def store = [:]
        PMTest2.metaClass.propertyMissing = { String name ->
           store.name
        }
        PMTest2.metaClass.propertyMissing = { String name, value ->
           store.name = value
        }

        def t = new PMTest2()

       assertEquals "bar", t.foo
       t.foo = "changed"
       assertEquals "changed", t.foo
       assertNull t.bar
       t.bar = "keepme"

       assertEquals "keepme", t.bar

    }

    void testStaticPropertyMissingViaMetaClass() {

        shouldFail(MissingPropertyException) {
            PMTest1.SOME_PROP
        }

        PMTest1.metaClass.'static'.propertyMissing = { String name ->
            name
        }

        assertEquals "SOME_PROP", PMTest1.SOME_PROP
        assertEquals "FOO", PMTest1.FOO
    }

}
class PMTest1 {
    def store = [:]
    String foo = "bar"
    String propertyMissing(String name) {
        store.name
    }
    void propertyMissing(String name, value) {
        store.name = value
    }
}
class PMTest2 {
    String foo = "bar"
}