/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  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 org.apache.groovy.groovysh.commands

import org.junit.jupiter.api.Test

/**
 * Tests for the {@code /methods} command.
 */
class MethodsTest extends SystemTestSupport {
    @Test
    void testImport() {
        system.execute('/methods')
        assert !printer.output.join().contains('twice')
        system.execute('def twice(n){ n * 2 }')
        system.execute('/methods')
        assert printer.output.join().contains('def twice(n){ n * 2 }')
        assert engine.methodNames.contains('twice')
        system.execute('/methods -d twice')
        assert !engine.methodNames.contains('twice')
    }

    @Test
    void testDeleteNonexistentMethodIsHarmless() {
        // /methods -d on an unknown method should not throw; the engine's
        // method registry stays stable.
        def before = engine.methodNames.toSet()
        system.execute('/methods -d noSuchMethodEverDefined')
        assert engine.methodNames.toSet() == before
    }
}
