src/test/groovy/bugs/Groovy4857Bug.groovy

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 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.bugs

import groovy.test.GroovyTestCase

class Groovy4857Bug extends GroovyTestCase {
    void testMissingMethodNotUnsupportedOperation() {
        try {
            new GroovyShell().evaluate """
                interface A { def getValue() }

                class B { }

                def test = [ getValue: { 'getValue() called' } ] as A

                def b = new B()

                b.call(test)
            """
            fail('The compilation should have failed with No signature of method: B.call()')
        } catch (e) {
            assert e.message.contains('No signature of method: B.call()')
            assert e.class.name == 'groovy.lang.MissingMethodException'
        }
    }

    void testTrygveAmundsensExample() {
        def val = new GroovyShell().evaluate """
            [run: {}] as Runnable
        """

        assert val.toString()
        assert val instanceof Runnable
    }
}