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Groovy example source code file (MockInterceptor.groovy)

This example Groovy source code file (MockInterceptor.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

illegalstateexception, illegalstateexception, mockinterceptor, object, object, property, property, propertyaccessinterceptor, string, string

The Groovy MockInterceptor.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.mock.interceptor

/**
 * Intercepting calls to the collaborating object and notify the expectation object.
 *
 * @author Dierk Koenig
 */

class MockInterceptor implements PropertyAccessInterceptor {

    def expectation = null

    def beforeInvoke(Object object, String methodName, Object[] arguments) {
        if (!expectation) throw new IllegalStateException("Property 'expectation' must be set before use.")
        def result = expectation.match(methodName)
        if (result == MockProxyMetaClass.FALL_THROUGH_MARKER) return result
        return result(*arguments)
    }

    def beforeGet(Object object, String property) {
        if (!expectation) throw new IllegalStateException("Property 'expectation' must be set before use.")
        String name = "get${property[0].toUpperCase()}${property[1..-1]}"
        def result = expectation.match(name)
        if (result == MockProxyMetaClass.FALL_THROUGH_MARKER) return result
        return result()
    }

    void beforeSet(Object object, String property, Object newValue) {
        if (!expectation) throw new IllegalStateException("Property 'expectation' must be set before use.")
        String name = "set${property[0].toUpperCase()}${property[1..-1]}"
        def result = expectation.match(name)
        if (result != MockProxyMetaClass.FALL_THROUGH_MARKER) {
            result(newValue)
            result = null
        }
        // object is never used so cheat and use it for return value
        if (object instanceof Object[]) ((Object[])object)[0] = result
    }

    def afterInvoke(Object object, String methodName, Object[] arguments, Object result) {
        return null // never used
    }

    boolean doInvoke() {
        return false // future versions may allow collaborator method calls depending on state
    }
}

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