src/test/java/org/apache/felix/gogo/runtime/ExpanderTest.java

/*
 * 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.felix.gogo.runtime;

import org.junit.Test;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

public class ExpanderTest {

    @Test
    public void testGenerateFiles() throws IOException {
        final Path testdir = Paths.get(".").toAbsolutePath().resolve("target/testdir").normalize();
        Evaluate evaluate = new Evaluate() {
            @Override
            public Object eval(Token t) throws Exception {
                return null;
            }
            @Override
            public Object get(String key) {
                if ("HOME".equals(key)) {
                    return testdir.resolve("Users/gogo");
                }
                return null;
            }
            @Override
            public Object put(String key, Object value) {
                return null;
            }
            @Override
            public Object expr(Token t) {
                return null;
            }
            @Override
            public Path currentDir() {
                return testdir.resolve("Users/gogo/karaf/home");
            }
        };
        deleteRecursive(testdir);
        Files.createDirectories(testdir);
        Files.createDirectories(evaluate.currentDir());
        Path home = Paths.get(evaluate.get("HOME").toString());
        Files.createDirectories(home);
        Files.createFile(home.resolve("test1.txt"));
        Files.createDirectories(home.resolve("child"));
        Files.createFile(home.resolve("child/test2.txt"));

        Expander expander = new Expander("", evaluate, false, false, false, false, false);
        List<? extends CharSequence> files = expander.generateFileNames("~/*.[tx][v-z][!a]");
        assertNotNull(files);
        assertEquals(1, files.size());
        assertEquals("test1.txt", home.relativize(Paths.get(files.get(0).toString())).toString());
    }

    private static void deleteRecursive(Path file) throws IOException {
        if (file != null) {
            if (Files.isDirectory(file)) {
                for (Path child : Files.newDirectoryStream(file)) {
                    deleteRecursive(child);
                }
            }
            Files.deleteIfExists(file);
        }
    }
}