Groovy example source code file (GroovyShellTestCase.groovy)

This example Groovy source code file (GroovyShellTestCase.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

binding, binding, closure, delegate, groovyshell, groovyshell, groovyshelltestcase, groovytestcase, hashmap, hashmap, map, map, string

The Groovy GroovyShellTestCase.groovy source code

/*
 * Copyright 2003-2008 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

/**
 * Groovy test case, which recreates internal GroovyShell in each setUp ()
 *
 * @author Alex Tkachman
 */
class GroovyShellTestCase extends GroovyTestCase {

    @Delegate protected GroovyShell shell

    protected void setUp() {
        super.setUp();
        shell = createNewShell();
    }

    protected void tearDown() {
        shell = null;
        super.tearDown();
    }

    /**
     * Create new shell instance.
     * Overwrite it to customize
     */
    protected GroovyShell createNewShell() {
        return new GroovyShell()
    }

    /**
     * Executes closure with given binding
     */
    protected def withBinding (Map map, Closure closure) {
        Binding binding = shell.context
        Map bmap = binding.variables
        try {
            Map vars = new HashMap(bmap)
            bmap.putAll map

            return closure.call()
        }
        finally {
            bmap.clear()
            bmap.putAll vars
        }
    }

    /**
     * Evaluates script with given binding
     */
    protected def withBinding (Map map, String script) {
        Binding binding = shell.context
        Map bmap = binding.variables
        try {
            Map vars = new HashMap(bmap)
            bmap.putAll map

            return evaluate(script)
        }
        finally {
            bmap.clear()
            bmap.putAll vars
        }
    }
}